./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem13_label18.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b5237d83 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3f91a35-3b97-4cac-be56-d7c16bac90d5/bin/uautomizer-vX5HgA9Q3a/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3f91a35-3b97-4cac-be56-d7c16bac90d5/bin/uautomizer-vX5HgA9Q3a/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3f91a35-3b97-4cac-be56-d7c16bac90d5/bin/uautomizer-vX5HgA9Q3a/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3f91a35-3b97-4cac-be56-d7c16bac90d5/bin/uautomizer-vX5HgA9Q3a/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem13_label18.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3f91a35-3b97-4cac-be56-d7c16bac90d5/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3f91a35-3b97-4cac-be56-d7c16bac90d5/bin/uautomizer-vX5HgA9Q3a --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 194fbdc3b3886612fc58320fafee97b7b69b69e44501245b99f854c5cffd6315 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-b5237d8 [2022-11-21 09:14:34,919 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-21 09:14:34,921 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-21 09:14:34,964 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-21 09:14:34,965 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-21 09:14:34,966 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-21 09:14:34,967 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-21 09:14:34,969 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-21 09:14:34,971 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-21 09:14:34,972 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-21 09:14:34,977 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-21 09:14:34,980 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-21 09:14:34,981 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-21 09:14:34,987 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-21 09:14:34,990 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-21 09:14:34,995 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-21 09:14:34,996 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-21 09:14:34,997 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-21 09:14:34,999 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-21 09:14:35,001 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-21 09:14:35,003 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-21 09:14:35,008 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-21 09:14:35,011 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-21 09:14:35,012 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-21 09:14:35,025 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-21 09:14:35,025 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-21 09:14:35,025 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-21 09:14:35,026 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-21 09:14:35,027 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-21 09:14:35,028 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-21 09:14:35,028 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-21 09:14:35,029 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-21 09:14:35,030 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-21 09:14:35,031 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-21 09:14:35,032 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-21 09:14:35,032 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-21 09:14:35,033 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-21 09:14:35,033 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-21 09:14:35,033 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-21 09:14:35,034 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-21 09:14:35,038 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-21 09:14:35,040 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3f91a35-3b97-4cac-be56-d7c16bac90d5/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-21 09:14:35,071 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-21 09:14:35,071 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-21 09:14:35,072 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-21 09:14:35,072 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-21 09:14:35,073 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-21 09:14:35,074 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-21 09:14:35,075 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-21 09:14:35,075 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-21 09:14:35,075 INFO L138 SettingsManager]: * Use SBE=true [2022-11-21 09:14:35,075 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-21 09:14:35,077 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-21 09:14:35,077 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-21 09:14:35,077 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-21 09:14:35,077 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-21 09:14:35,078 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-21 09:14:35,078 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-21 09:14:35,078 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-21 09:14:35,078 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-21 09:14:35,078 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-21 09:14:35,079 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-21 09:14:35,079 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-21 09:14:35,079 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-21 09:14:35,080 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-21 09:14:35,080 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-21 09:14:35,080 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 09:14:35,080 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-21 09:14:35,081 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-21 09:14:35,081 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-21 09:14:35,081 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-21 09:14:35,082 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-21 09:14:35,082 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-21 09:14:35,082 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-21 09:14:35,083 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-21 09:14:35,083 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_e3f91a35-3b97-4cac-be56-d7c16bac90d5/bin/uautomizer-vX5HgA9Q3a/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3f91a35-3b97-4cac-be56-d7c16bac90d5/bin/uautomizer-vX5HgA9Q3a Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 194fbdc3b3886612fc58320fafee97b7b69b69e44501245b99f854c5cffd6315 [2022-11-21 09:14:35,394 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-21 09:14:35,415 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-21 09:14:35,418 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-21 09:14:35,420 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-21 09:14:35,420 INFO L275 PluginConnector]: CDTParser initialized [2022-11-21 09:14:35,421 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3f91a35-3b97-4cac-be56-d7c16bac90d5/bin/uautomizer-vX5HgA9Q3a/../../sv-benchmarks/c/eca-rers2012/Problem13_label18.c [2022-11-21 09:14:38,377 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-21 09:14:38,940 INFO L351 CDTParser]: Found 1 translation units. [2022-11-21 09:14:38,941 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3f91a35-3b97-4cac-be56-d7c16bac90d5/sv-benchmarks/c/eca-rers2012/Problem13_label18.c [2022-11-21 09:14:38,985 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3f91a35-3b97-4cac-be56-d7c16bac90d5/bin/uautomizer-vX5HgA9Q3a/data/382773748/78517ff389ea46409d728b833caa31af/FLAGbac50ffa2 [2022-11-21 09:14:39,004 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3f91a35-3b97-4cac-be56-d7c16bac90d5/bin/uautomizer-vX5HgA9Q3a/data/382773748/78517ff389ea46409d728b833caa31af [2022-11-21 09:14:39,007 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-21 09:14:39,009 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-21 09:14:39,013 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-21 09:14:39,014 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-21 09:14:39,018 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-21 09:14:39,018 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 09:14:39" (1/1) ... [2022-11-21 09:14:39,020 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@272b5d6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:14:39, skipping insertion in model container [2022-11-21 09:14:39,020 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 09:14:39" (1/1) ... [2022-11-21 09:14:39,028 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-21 09:14:39,189 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-21 09:14:39,489 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3f91a35-3b97-4cac-be56-d7c16bac90d5/sv-benchmarks/c/eca-rers2012/Problem13_label18.c[8933,8946] [2022-11-21 09:14:40,705 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 09:14:40,718 INFO L203 MainTranslator]: Completed pre-run [2022-11-21 09:14:40,754 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3f91a35-3b97-4cac-be56-d7c16bac90d5/sv-benchmarks/c/eca-rers2012/Problem13_label18.c[8933,8946] [2022-11-21 09:14:41,465 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 09:14:41,537 INFO L208 MainTranslator]: Completed translation [2022-11-21 09:14:41,538 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:14:41 WrapperNode [2022-11-21 09:14:41,538 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-21 09:14:41,539 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-21 09:14:41,540 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-21 09:14:41,540 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-21 09:14:41,548 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:14:41" (1/1) ... [2022-11-21 09:14:41,622 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:14:41" (1/1) ... [2022-11-21 09:14:42,358 INFO L138 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 5583 [2022-11-21 09:14:42,358 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-21 09:14:42,360 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-21 09:14:42,360 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-21 09:14:42,360 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-21 09:14:42,371 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:14:41" (1/1) ... [2022-11-21 09:14:42,371 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:14:41" (1/1) ... [2022-11-21 09:14:42,533 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:14:41" (1/1) ... [2022-11-21 09:14:42,563 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:14:41" (1/1) ... [2022-11-21 09:14:42,948 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:14:41" (1/1) ... [2022-11-21 09:14:43,054 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:14:41" (1/1) ... [2022-11-21 09:14:43,124 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:14:41" (1/1) ... [2022-11-21 09:14:43,141 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:14:41" (1/1) ... [2022-11-21 09:14:43,260 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-21 09:14:43,261 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-21 09:14:43,262 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-21 09:14:43,263 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-21 09:14:43,264 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:14:41" (1/1) ... [2022-11-21 09:14:43,270 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 09:14:43,287 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3f91a35-3b97-4cac-be56-d7c16bac90d5/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 09:14:43,302 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3f91a35-3b97-4cac-be56-d7c16bac90d5/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-21 09:14:43,330 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3f91a35-3b97-4cac-be56-d7c16bac90d5/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-21 09:14:43,353 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-21 09:14:43,353 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-21 09:14:43,353 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-21 09:14:43,353 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-21 09:14:43,469 INFO L235 CfgBuilder]: Building ICFG [2022-11-21 09:14:43,472 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-21 09:14:49,960 INFO L276 CfgBuilder]: Performing block encoding [2022-11-21 09:14:49,977 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-21 09:14:49,978 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-21 09:14:49,981 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 09:14:49 BoogieIcfgContainer [2022-11-21 09:14:49,981 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-21 09:14:49,984 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-21 09:14:49,984 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-21 09:14:49,987 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-21 09:14:49,987 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 09:14:39" (1/3) ... [2022-11-21 09:14:49,988 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67597fc7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 09:14:49, skipping insertion in model container [2022-11-21 09:14:49,988 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:14:41" (2/3) ... [2022-11-21 09:14:49,988 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67597fc7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 09:14:49, skipping insertion in model container [2022-11-21 09:14:49,988 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 09:14:49" (3/3) ... [2022-11-21 09:14:49,990 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label18.c [2022-11-21 09:14:50,009 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-21 09:14:50,009 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-21 09:14:50,080 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-21 09:14:50,086 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;@3fbe92ba, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-21 09:14:50,087 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-21 09:14:50,095 INFO L276 IsEmpty]: Start isEmpty. Operand has 1098 states, 1096 states have (on average 1.8275547445255473) internal successors, (2003), 1097 states have internal predecessors, (2003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:14:50,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-11-21 09:14:50,104 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 09:14:50,105 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 09:14:50,106 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 09:14:50,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:14:50,111 INFO L85 PathProgramCache]: Analyzing trace with hash -696204111, now seen corresponding path program 1 times [2022-11-21 09:14:50,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:14:50,120 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710635853] [2022-11-21 09:14:50,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:14:50,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:14:50,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:14:50,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 09:14:50,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:14:50,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710635853] [2022-11-21 09:14:50,833 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [710635853] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:14:50,833 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 09:14:50,833 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 09:14:50,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699148261] [2022-11-21 09:14:50,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:14:50,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 09:14:50,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:14:50,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 09:14:50,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 09:14:50,891 INFO L87 Difference]: Start difference. First operand has 1098 states, 1096 states have (on average 1.8275547445255473) internal successors, (2003), 1097 states have internal predecessors, (2003), 0 states have call successors, (0), 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 4 states, 4 states have (on average 15.75) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:14:59,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 09:14:59,954 INFO L93 Difference]: Finished difference Result 3829 states and 7206 transitions. [2022-11-21 09:14:59,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-21 09:14:59,957 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2022-11-21 09:14:59,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 09:14:59,983 INFO L225 Difference]: With dead ends: 3829 [2022-11-21 09:14:59,983 INFO L226 Difference]: Without dead ends: 2664 [2022-11-21 09:14:59,991 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-21 09:14:59,994 INFO L413 NwaCegarLoop]: 761 mSDtfsCounter, 2667 mSDsluCounter, 306 mSDsCounter, 0 mSdLazyCounter, 4246 mSolverCounterSat, 1607 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2667 SdHoareTripleChecker+Valid, 1067 SdHoareTripleChecker+Invalid, 5853 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1607 IncrementalHoareTripleChecker+Valid, 4246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.6s IncrementalHoareTripleChecker+Time [2022-11-21 09:14:59,995 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2667 Valid, 1067 Invalid, 5853 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1607 Valid, 4246 Invalid, 0 Unknown, 0 Unchecked, 8.6s Time] [2022-11-21 09:15:00,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2664 states. [2022-11-21 09:15:00,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2664 to 2663. [2022-11-21 09:15:00,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2663 states, 2662 states have (on average 1.460931630353118) internal successors, (3889), 2662 states have internal predecessors, (3889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:15:00,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2663 states to 2663 states and 3889 transitions. [2022-11-21 09:15:00,130 INFO L78 Accepts]: Start accepts. Automaton has 2663 states and 3889 transitions. Word has length 63 [2022-11-21 09:15:00,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 09:15:00,131 INFO L495 AbstractCegarLoop]: Abstraction has 2663 states and 3889 transitions. [2022-11-21 09:15:00,131 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:15:00,132 INFO L276 IsEmpty]: Start isEmpty. Operand 2663 states and 3889 transitions. [2022-11-21 09:15:00,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2022-11-21 09:15:00,138 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 09:15:00,138 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 09:15:00,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-21 09:15:00,139 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 09:15:00,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:15:00,140 INFO L85 PathProgramCache]: Analyzing trace with hash -1618212313, now seen corresponding path program 1 times [2022-11-21 09:15:00,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:15:00,141 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164112672] [2022-11-21 09:15:00,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:15:00,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:15:00,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:00,547 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 09:15:00,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:15:00,548 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164112672] [2022-11-21 09:15:00,548 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1164112672] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:15:00,548 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 09:15:00,549 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 09:15:00,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133063308] [2022-11-21 09:15:00,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:15:00,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 09:15:00,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:15:00,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 09:15:00,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-21 09:15:00,552 INFO L87 Difference]: Start difference. First operand 2663 states and 3889 transitions. Second operand has 4 states, 4 states have (on average 47.0) internal successors, (188), 3 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:15:09,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 09:15:09,899 INFO L93 Difference]: Finished difference Result 7864 states and 12669 transitions. [2022-11-21 09:15:09,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-21 09:15:09,900 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 47.0) internal successors, (188), 3 states have internal predecessors, (188), 0 states have call successors, (0), 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 188 [2022-11-21 09:15:09,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 09:15:09,926 INFO L225 Difference]: With dead ends: 7864 [2022-11-21 09:15:09,926 INFO L226 Difference]: Without dead ends: 5990 [2022-11-21 09:15:09,934 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-21 09:15:09,937 INFO L413 NwaCegarLoop]: 894 mSDtfsCounter, 1616 mSDsluCounter, 297 mSDsCounter, 0 mSdLazyCounter, 6333 mSolverCounterSat, 831 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1616 SdHoareTripleChecker+Valid, 1191 SdHoareTripleChecker+Invalid, 7164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 831 IncrementalHoareTripleChecker+Valid, 6333 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.1s IncrementalHoareTripleChecker+Time [2022-11-21 09:15:09,938 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1616 Valid, 1191 Invalid, 7164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [831 Valid, 6333 Invalid, 0 Unknown, 0 Unchecked, 9.1s Time] [2022-11-21 09:15:09,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5990 states. [2022-11-21 09:15:10,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5990 to 5859. [2022-11-21 09:15:10,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5859 states, 5858 states have (on average 1.4452031410037556) internal successors, (8466), 5858 states have internal predecessors, (8466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:15:10,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5859 states to 5859 states and 8466 transitions. [2022-11-21 09:15:10,064 INFO L78 Accepts]: Start accepts. Automaton has 5859 states and 8466 transitions. Word has length 188 [2022-11-21 09:15:10,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 09:15:10,066 INFO L495 AbstractCegarLoop]: Abstraction has 5859 states and 8466 transitions. [2022-11-21 09:15:10,066 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 47.0) internal successors, (188), 3 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:15:10,067 INFO L276 IsEmpty]: Start isEmpty. Operand 5859 states and 8466 transitions. [2022-11-21 09:15:10,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2022-11-21 09:15:10,072 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 09:15:10,073 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 09:15:10,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-21 09:15:10,074 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 09:15:10,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:15:10,074 INFO L85 PathProgramCache]: Analyzing trace with hash 1994827739, now seen corresponding path program 1 times [2022-11-21 09:15:10,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:15:10,075 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422406585] [2022-11-21 09:15:10,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:15:10,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:15:10,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:10,374 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 121 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-11-21 09:15:10,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:15:10,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422406585] [2022-11-21 09:15:10,375 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [422406585] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:15:10,376 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 09:15:10,376 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-21 09:15:10,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20454753] [2022-11-21 09:15:10,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:15:10,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 09:15:10,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:15:10,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 09:15:10,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 09:15:10,380 INFO L87 Difference]: Start difference. First operand 5859 states and 8466 transitions. Second operand has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 2 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:15:15,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 09:15:15,147 INFO L93 Difference]: Finished difference Result 15685 states and 23389 transitions. [2022-11-21 09:15:15,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 09:15:15,148 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 2 states have internal predecessors, (161), 0 states have call successors, (0), 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 230 [2022-11-21 09:15:15,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 09:15:15,179 INFO L225 Difference]: With dead ends: 15685 [2022-11-21 09:15:15,180 INFO L226 Difference]: Without dead ends: 10615 [2022-11-21 09:15:15,186 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 09:15:15,187 INFO L413 NwaCegarLoop]: 784 mSDtfsCounter, 918 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 2553 mSolverCounterSat, 757 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 918 SdHoareTripleChecker+Valid, 916 SdHoareTripleChecker+Invalid, 3310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 757 IncrementalHoareTripleChecker+Valid, 2553 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2022-11-21 09:15:15,188 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [918 Valid, 916 Invalid, 3310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [757 Valid, 2553 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2022-11-21 09:15:15,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10615 states. [2022-11-21 09:15:15,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10615 to 10608. [2022-11-21 09:15:15,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10608 states, 10607 states have (on average 1.3551428302064674) internal successors, (14374), 10607 states have internal predecessors, (14374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:15:15,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10608 states to 10608 states and 14374 transitions. [2022-11-21 09:15:15,396 INFO L78 Accepts]: Start accepts. Automaton has 10608 states and 14374 transitions. Word has length 230 [2022-11-21 09:15:15,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 09:15:15,398 INFO L495 AbstractCegarLoop]: Abstraction has 10608 states and 14374 transitions. [2022-11-21 09:15:15,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 2 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:15:15,398 INFO L276 IsEmpty]: Start isEmpty. Operand 10608 states and 14374 transitions. [2022-11-21 09:15:15,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2022-11-21 09:15:15,403 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 09:15:15,404 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 09:15:15,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-21 09:15:15,404 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 09:15:15,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:15:15,408 INFO L85 PathProgramCache]: Analyzing trace with hash 1064647934, now seen corresponding path program 1 times [2022-11-21 09:15:15,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:15:15,408 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626809225] [2022-11-21 09:15:15,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:15:15,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:15:15,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:15,754 INFO L134 CoverageAnalysis]: Checked inductivity of 205 backedges. 121 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-11-21 09:15:15,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:15:15,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626809225] [2022-11-21 09:15:15,754 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [626809225] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:15:15,755 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 09:15:15,755 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-21 09:15:15,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952535620] [2022-11-21 09:15:15,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:15:15,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 09:15:15,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:15:15,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 09:15:15,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 09:15:15,757 INFO L87 Difference]: Start difference. First operand 10608 states and 14374 transitions. Second operand has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 2 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:15:20,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 09:15:20,623 INFO L93 Difference]: Finished difference Result 28349 states and 39239 transitions. [2022-11-21 09:15:20,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 09:15:20,624 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 2 states have internal predecessors, (161), 0 states have call successors, (0), 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 244 [2022-11-21 09:15:20,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 09:15:20,670 INFO L225 Difference]: With dead ends: 28349 [2022-11-21 09:15:20,671 INFO L226 Difference]: Without dead ends: 18530 [2022-11-21 09:15:20,682 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 09:15:20,683 INFO L413 NwaCegarLoop]: 449 mSDtfsCounter, 907 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 2871 mSolverCounterSat, 545 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 907 SdHoareTripleChecker+Valid, 614 SdHoareTripleChecker+Invalid, 3416 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 545 IncrementalHoareTripleChecker+Valid, 2871 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2022-11-21 09:15:20,684 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [907 Valid, 614 Invalid, 3416 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [545 Valid, 2871 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2022-11-21 09:15:20,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18530 states. [2022-11-21 09:15:20,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18530 to 18523. [2022-11-21 09:15:20,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18523 states, 18522 states have (on average 1.3250188964474678) internal successors, (24542), 18522 states have internal predecessors, (24542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:15:21,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18523 states to 18523 states and 24542 transitions. [2022-11-21 09:15:21,008 INFO L78 Accepts]: Start accepts. Automaton has 18523 states and 24542 transitions. Word has length 244 [2022-11-21 09:15:21,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 09:15:21,009 INFO L495 AbstractCegarLoop]: Abstraction has 18523 states and 24542 transitions. [2022-11-21 09:15:21,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 2 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:15:21,009 INFO L276 IsEmpty]: Start isEmpty. Operand 18523 states and 24542 transitions. [2022-11-21 09:15:21,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2022-11-21 09:15:21,015 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 09:15:21,015 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 09:15:21,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-21 09:15:21,015 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 09:15:21,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:15:21,016 INFO L85 PathProgramCache]: Analyzing trace with hash -372692093, now seen corresponding path program 1 times [2022-11-21 09:15:21,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:15:21,017 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425737353] [2022-11-21 09:15:21,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:15:21,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:15:21,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:21,307 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 121 proven. 0 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2022-11-21 09:15:21,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:15:21,308 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425737353] [2022-11-21 09:15:21,308 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1425737353] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:15:21,308 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 09:15:21,308 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-21 09:15:21,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511701965] [2022-11-21 09:15:21,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:15:21,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 09:15:21,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:15:21,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 09:15:21,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 09:15:21,312 INFO L87 Difference]: Start difference. First operand 18523 states and 24542 transitions. Second operand has 3 states, 3 states have (on average 62.333333333333336) internal successors, (187), 2 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:15:26,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 09:15:26,090 INFO L93 Difference]: Finished difference Result 51208 states and 68744 transitions. [2022-11-21 09:15:26,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 09:15:26,091 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 62.333333333333336) internal successors, (187), 2 states have internal predecessors, (187), 0 states have call successors, (0), 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 281 [2022-11-21 09:15:26,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 09:15:26,158 INFO L225 Difference]: With dead ends: 51208 [2022-11-21 09:15:26,158 INFO L226 Difference]: Without dead ends: 33474 [2022-11-21 09:15:26,178 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 09:15:26,179 INFO L413 NwaCegarLoop]: 839 mSDtfsCounter, 860 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 2308 mSolverCounterSat, 870 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 860 SdHoareTripleChecker+Valid, 986 SdHoareTripleChecker+Invalid, 3178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 870 IncrementalHoareTripleChecker+Valid, 2308 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2022-11-21 09:15:26,179 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [860 Valid, 986 Invalid, 3178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [870 Valid, 2308 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2022-11-21 09:15:26,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33474 states. [2022-11-21 09:15:26,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33474 to 31109. [2022-11-21 09:15:26,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31109 states, 31108 states have (on average 1.2544361579015044) internal successors, (39023), 31108 states have internal predecessors, (39023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:15:26,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31109 states to 31109 states and 39023 transitions. [2022-11-21 09:15:26,695 INFO L78 Accepts]: Start accepts. Automaton has 31109 states and 39023 transitions. Word has length 281 [2022-11-21 09:15:26,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 09:15:26,696 INFO L495 AbstractCegarLoop]: Abstraction has 31109 states and 39023 transitions. [2022-11-21 09:15:26,698 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 62.333333333333336) internal successors, (187), 2 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:15:26,701 INFO L276 IsEmpty]: Start isEmpty. Operand 31109 states and 39023 transitions. [2022-11-21 09:15:26,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2022-11-21 09:15:26,708 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 09:15:26,709 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 09:15:26,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-21 09:15:26,710 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 09:15:26,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:15:26,711 INFO L85 PathProgramCache]: Analyzing trace with hash 1436730698, now seen corresponding path program 1 times [2022-11-21 09:15:26,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:15:26,718 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520141082] [2022-11-21 09:15:26,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:15:26,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:15:26,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:27,006 INFO L134 CoverageAnalysis]: Checked inductivity of 395 backedges. 334 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2022-11-21 09:15:27,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:15:27,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520141082] [2022-11-21 09:15:27,007 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1520141082] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:15:27,007 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 09:15:27,008 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 09:15:27,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402110902] [2022-11-21 09:15:27,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:15:27,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 09:15:27,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:15:27,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 09:15:27,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 09:15:27,010 INFO L87 Difference]: Start difference. First operand 31109 states and 39023 transitions. Second operand has 3 states, 3 states have (on average 81.0) internal successors, (243), 3 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:15:31,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 09:15:31,974 INFO L93 Difference]: Finished difference Result 87412 states and 110601 transitions. [2022-11-21 09:15:31,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 09:15:31,975 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 81.0) internal successors, (243), 3 states have internal predecessors, (243), 0 states have call successors, (0), 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 303 [2022-11-21 09:15:31,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 09:15:32,085 INFO L225 Difference]: With dead ends: 87412 [2022-11-21 09:15:32,086 INFO L226 Difference]: Without dead ends: 57092 [2022-11-21 09:15:32,117 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 09:15:32,118 INFO L413 NwaCegarLoop]: 792 mSDtfsCounter, 887 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 2377 mSolverCounterSat, 920 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 887 SdHoareTripleChecker+Valid, 909 SdHoareTripleChecker+Invalid, 3297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 920 IncrementalHoareTripleChecker+Valid, 2377 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2022-11-21 09:15:32,118 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [887 Valid, 909 Invalid, 3297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [920 Valid, 2377 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2022-11-21 09:15:32,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57092 states. [2022-11-21 09:15:32,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57092 to 56294. [2022-11-21 09:15:32,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56294 states, 56293 states have (on average 1.2004512106300962) internal successors, (67577), 56293 states have internal predecessors, (67577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:15:33,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56294 states to 56294 states and 67577 transitions. [2022-11-21 09:15:33,055 INFO L78 Accepts]: Start accepts. Automaton has 56294 states and 67577 transitions. Word has length 303 [2022-11-21 09:15:33,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 09:15:33,056 INFO L495 AbstractCegarLoop]: Abstraction has 56294 states and 67577 transitions. [2022-11-21 09:15:33,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 81.0) internal successors, (243), 3 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:15:33,056 INFO L276 IsEmpty]: Start isEmpty. Operand 56294 states and 67577 transitions. [2022-11-21 09:15:33,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 352 [2022-11-21 09:15:33,065 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 09:15:33,065 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 09:15:33,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-21 09:15:33,066 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 09:15:33,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:15:33,066 INFO L85 PathProgramCache]: Analyzing trace with hash 725987894, now seen corresponding path program 1 times [2022-11-21 09:15:33,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:15:33,067 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204979582] [2022-11-21 09:15:33,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:15:33,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:15:33,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:33,488 INFO L134 CoverageAnalysis]: Checked inductivity of 458 backedges. 397 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2022-11-21 09:15:33,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:15:33,489 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204979582] [2022-11-21 09:15:33,489 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1204979582] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:15:33,489 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 09:15:33,489 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 09:15:33,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669390802] [2022-11-21 09:15:33,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:15:33,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 09:15:33,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:15:33,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 09:15:33,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-21 09:15:33,492 INFO L87 Difference]: Start difference. First operand 56294 states and 67577 transitions. Second operand has 4 states, 4 states have (on average 72.75) internal successors, (291), 3 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:15:43,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 09:15:43,528 INFO L93 Difference]: Finished difference Result 151374 states and 183845 transitions. [2022-11-21 09:15:43,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-21 09:15:43,529 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 72.75) internal successors, (291), 3 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 351 [2022-11-21 09:15:43,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 09:15:43,681 INFO L225 Difference]: With dead ends: 151374 [2022-11-21 09:15:43,681 INFO L226 Difference]: Without dead ends: 95869 [2022-11-21 09:15:43,731 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-21 09:15:43,732 INFO L413 NwaCegarLoop]: 500 mSDtfsCounter, 1736 mSDsluCounter, 242 mSDsCounter, 0 mSdLazyCounter, 6695 mSolverCounterSat, 1118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1736 SdHoareTripleChecker+Valid, 742 SdHoareTripleChecker+Invalid, 7813 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1118 IncrementalHoareTripleChecker+Valid, 6695 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.4s IncrementalHoareTripleChecker+Time [2022-11-21 09:15:43,732 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1736 Valid, 742 Invalid, 7813 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1118 Valid, 6695 Invalid, 0 Unknown, 0 Unchecked, 9.4s Time] [2022-11-21 09:15:43,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95869 states. [2022-11-21 09:15:45,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95869 to 95739. [2022-11-21 09:15:45,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95739 states, 95738 states have (on average 1.1949696045457394) internal successors, (114404), 95738 states have internal predecessors, (114404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:15:45,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95739 states to 95739 states and 114404 transitions. [2022-11-21 09:15:45,246 INFO L78 Accepts]: Start accepts. Automaton has 95739 states and 114404 transitions. Word has length 351 [2022-11-21 09:15:45,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 09:15:45,247 INFO L495 AbstractCegarLoop]: Abstraction has 95739 states and 114404 transitions. [2022-11-21 09:15:45,247 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 72.75) internal successors, (291), 3 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:15:45,247 INFO L276 IsEmpty]: Start isEmpty. Operand 95739 states and 114404 transitions. [2022-11-21 09:15:45,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 361 [2022-11-21 09:15:45,256 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 09:15:45,257 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 09:15:45,257 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-21 09:15:45,257 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 09:15:45,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:15:45,258 INFO L85 PathProgramCache]: Analyzing trace with hash -1617208669, now seen corresponding path program 1 times [2022-11-21 09:15:45,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:15:45,258 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106695008] [2022-11-21 09:15:45,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:15:45,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:15:45,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:46,230 INFO L134 CoverageAnalysis]: Checked inductivity of 446 backedges. 290 proven. 0 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2022-11-21 09:15:46,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:15:46,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106695008] [2022-11-21 09:15:46,231 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [106695008] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:15:46,231 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 09:15:46,232 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-21 09:15:46,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047982379] [2022-11-21 09:15:46,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:15:46,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 09:15:46,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:15:46,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 09:15:46,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 09:15:46,234 INFO L87 Difference]: Start difference. First operand 95739 states and 114404 transitions. Second operand has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 2 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:15:50,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 09:15:50,972 INFO L93 Difference]: Finished difference Result 177308 states and 213524 transitions. [2022-11-21 09:15:50,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 09:15:50,973 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 2 states have internal predecessors, (206), 0 states have call successors, (0), 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 360 [2022-11-21 09:15:50,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 09:15:51,301 INFO L225 Difference]: With dead ends: 177308 [2022-11-21 09:15:51,302 INFO L226 Difference]: Without dead ends: 95749 [2022-11-21 09:15:51,373 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 09:15:51,387 INFO L413 NwaCegarLoop]: 1020 mSDtfsCounter, 728 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 2705 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 728 SdHoareTripleChecker+Valid, 1201 SdHoareTripleChecker+Invalid, 2709 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 2705 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2022-11-21 09:15:51,388 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [728 Valid, 1201 Invalid, 2709 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 2705 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2022-11-21 09:15:51,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95749 states. [2022-11-21 09:15:52,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95749 to 95739. [2022-11-21 09:15:52,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95739 states, 95738 states have (on average 1.1940817648164783) internal successors, (114319), 95738 states have internal predecessors, (114319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:15:52,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95739 states to 95739 states and 114319 transitions. [2022-11-21 09:15:52,846 INFO L78 Accepts]: Start accepts. Automaton has 95739 states and 114319 transitions. Word has length 360 [2022-11-21 09:15:52,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 09:15:52,847 INFO L495 AbstractCegarLoop]: Abstraction has 95739 states and 114319 transitions. [2022-11-21 09:15:52,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 2 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:15:52,847 INFO L276 IsEmpty]: Start isEmpty. Operand 95739 states and 114319 transitions. [2022-11-21 09:15:52,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 390 [2022-11-21 09:15:52,871 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 09:15:52,872 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 09:15:52,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-21 09:15:52,874 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 09:15:52,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:15:52,875 INFO L85 PathProgramCache]: Analyzing trace with hash -609588181, now seen corresponding path program 1 times [2022-11-21 09:15:52,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:15:52,875 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121181451] [2022-11-21 09:15:52,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:15:52,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:15:52,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:55,218 INFO L134 CoverageAnalysis]: Checked inductivity of 464 backedges. 290 proven. 113 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2022-11-21 09:15:55,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:15:55,219 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121181451] [2022-11-21 09:15:55,219 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [121181451] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 09:15:55,219 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [955083484] [2022-11-21 09:15:55,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:15:55,219 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 09:15:55,220 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3f91a35-3b97-4cac-be56-d7c16bac90d5/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 09:15:55,226 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3f91a35-3b97-4cac-be56-d7c16bac90d5/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 09:15:55,259 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3f91a35-3b97-4cac-be56-d7c16bac90d5/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-21 09:15:55,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:55,437 INFO L263 TraceCheckSpWp]: Trace formula consists of 537 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-21 09:15:55,462 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 09:15:55,757 INFO L134 CoverageAnalysis]: Checked inductivity of 464 backedges. 290 proven. 0 refuted. 0 times theorem prover too weak. 174 trivial. 0 not checked. [2022-11-21 09:15:55,758 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 09:15:55,758 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [955083484] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:15:55,758 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 09:15:55,758 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2022-11-21 09:15:55,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846515222] [2022-11-21 09:15:55,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:15:55,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 09:15:55,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:15:55,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 09:15:55,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-21 09:15:55,761 INFO L87 Difference]: Start difference. First operand 95739 states and 114319 transitions. Second operand has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:16:00,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 09:16:00,614 INFO L93 Difference]: Finished difference Result 189900 states and 226691 transitions. [2022-11-21 09:16:00,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 09:16:00,633 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 0 states have call successors, (0), 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 389 [2022-11-21 09:16:00,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 09:16:00,814 INFO L225 Difference]: With dead ends: 189900 [2022-11-21 09:16:00,814 INFO L226 Difference]: Without dead ends: 94950 [2022-11-21 09:16:00,838 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 395 GetRequests, 388 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-21 09:16:00,840 INFO L413 NwaCegarLoop]: 1366 mSDtfsCounter, 1123 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 2467 mSolverCounterSat, 451 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1123 SdHoareTripleChecker+Valid, 1448 SdHoareTripleChecker+Invalid, 2918 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 451 IncrementalHoareTripleChecker+Valid, 2467 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2022-11-21 09:16:00,841 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1123 Valid, 1448 Invalid, 2918 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [451 Valid, 2467 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2022-11-21 09:16:00,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94950 states. [2022-11-21 09:16:02,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94950 to 94949. [2022-11-21 09:16:02,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94949 states, 94948 states have (on average 1.1426254370813498) internal successors, (108490), 94948 states have internal predecessors, (108490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:16:02,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94949 states to 94949 states and 108490 transitions. [2022-11-21 09:16:02,240 INFO L78 Accepts]: Start accepts. Automaton has 94949 states and 108490 transitions. Word has length 389 [2022-11-21 09:16:02,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 09:16:02,241 INFO L495 AbstractCegarLoop]: Abstraction has 94949 states and 108490 transitions. [2022-11-21 09:16:02,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:16:02,241 INFO L276 IsEmpty]: Start isEmpty. Operand 94949 states and 108490 transitions. [2022-11-21 09:16:02,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 458 [2022-11-21 09:16:02,265 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 09:16:02,267 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 09:16:02,280 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3f91a35-3b97-4cac-be56-d7c16bac90d5/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-21 09:16:02,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3f91a35-3b97-4cac-be56-d7c16bac90d5/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 09:16:02,474 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 09:16:02,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:16:02,474 INFO L85 PathProgramCache]: Analyzing trace with hash 407632997, now seen corresponding path program 1 times [2022-11-21 09:16:02,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:16:02,474 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751418955] [2022-11-21 09:16:02,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:16:02,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:16:02,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:16:03,203 INFO L134 CoverageAnalysis]: Checked inductivity of 742 backedges. 470 proven. 0 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2022-11-21 09:16:03,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:16:03,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751418955] [2022-11-21 09:16:03,203 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [751418955] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:16:03,204 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 09:16:03,204 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 09:16:03,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608246865] [2022-11-21 09:16:03,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:16:03,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 09:16:03,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:16:03,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 09:16:03,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 09:16:03,206 INFO L87 Difference]: Start difference. First operand 94949 states and 108490 transitions. Second operand has 3 states, 3 states have (on average 91.66666666666667) internal successors, (275), 3 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:16:08,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 09:16:08,833 INFO L93 Difference]: Finished difference Result 221391 states and 255679 transitions. [2022-11-21 09:16:08,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 09:16:08,835 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 91.66666666666667) internal successors, (275), 3 states have internal predecessors, (275), 0 states have call successors, (0), 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 457 [2022-11-21 09:16:08,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 09:16:08,982 INFO L225 Difference]: With dead ends: 221391 [2022-11-21 09:16:08,982 INFO L226 Difference]: Without dead ends: 127231 [2022-11-21 09:16:09,019 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 09:16:09,019 INFO L413 NwaCegarLoop]: 1786 mSDtfsCounter, 780 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 2552 mSolverCounterSat, 715 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 780 SdHoareTripleChecker+Valid, 1940 SdHoareTripleChecker+Invalid, 3267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 715 IncrementalHoareTripleChecker+Valid, 2552 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2022-11-21 09:16:09,020 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [780 Valid, 1940 Invalid, 3267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [715 Valid, 2552 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2022-11-21 09:16:09,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127231 states. [2022-11-21 09:16:10,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127231 to 124852. [2022-11-21 09:16:10,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124852 states, 124851 states have (on average 1.1174279741451811) internal successors, (139512), 124851 states have internal predecessors, (139512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:16:10,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124852 states to 124852 states and 139512 transitions. [2022-11-21 09:16:10,924 INFO L78 Accepts]: Start accepts. Automaton has 124852 states and 139512 transitions. Word has length 457 [2022-11-21 09:16:10,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 09:16:10,925 INFO L495 AbstractCegarLoop]: Abstraction has 124852 states and 139512 transitions. [2022-11-21 09:16:10,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 91.66666666666667) internal successors, (275), 3 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:16:10,926 INFO L276 IsEmpty]: Start isEmpty. Operand 124852 states and 139512 transitions. [2022-11-21 09:16:10,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 480 [2022-11-21 09:16:10,944 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 09:16:10,945 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 09:16:10,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-21 09:16:10,945 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 09:16:10,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:16:10,946 INFO L85 PathProgramCache]: Analyzing trace with hash -1993380115, now seen corresponding path program 1 times [2022-11-21 09:16:10,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:16:10,946 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242229112] [2022-11-21 09:16:10,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:16:10,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:16:11,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:16:12,820 INFO L134 CoverageAnalysis]: Checked inductivity of 533 backedges. 362 proven. 110 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2022-11-21 09:16:12,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:16:12,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242229112] [2022-11-21 09:16:12,820 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [242229112] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 09:16:12,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1497957958] [2022-11-21 09:16:12,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:16:12,821 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 09:16:12,821 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3f91a35-3b97-4cac-be56-d7c16bac90d5/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 09:16:12,822 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3f91a35-3b97-4cac-be56-d7c16bac90d5/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 09:16:12,824 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3f91a35-3b97-4cac-be56-d7c16bac90d5/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-21 09:16:13,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:16:13,034 INFO L263 TraceCheckSpWp]: Trace formula consists of 627 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-21 09:16:13,041 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 09:16:13,155 INFO L134 CoverageAnalysis]: Checked inductivity of 533 backedges. 182 proven. 0 refuted. 0 times theorem prover too weak. 351 trivial. 0 not checked. [2022-11-21 09:16:13,155 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 09:16:13,155 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1497957958] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:16:13,156 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 09:16:13,156 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2022-11-21 09:16:13,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947744225] [2022-11-21 09:16:13,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:16:13,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 09:16:13,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:16:13,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 09:16:13,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-11-21 09:16:13,158 INFO L87 Difference]: Start difference. First operand 124852 states and 139512 transitions. Second operand has 3 states, 3 states have (on average 81.0) internal successors, (243), 3 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:16:18,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 09:16:18,678 INFO L93 Difference]: Finished difference Result 279617 states and 315744 transitions. [2022-11-21 09:16:18,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 09:16:18,678 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 81.0) internal successors, (243), 3 states have internal predecessors, (243), 0 states have call successors, (0), 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 479 [2022-11-21 09:16:18,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 09:16:18,891 INFO L225 Difference]: With dead ends: 279617 [2022-11-21 09:16:18,891 INFO L226 Difference]: Without dead ends: 155554 [2022-11-21 09:16:18,926 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 484 GetRequests, 478 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-11-21 09:16:18,927 INFO L413 NwaCegarLoop]: 704 mSDtfsCounter, 976 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 2389 mSolverCounterSat, 999 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 976 SdHoareTripleChecker+Valid, 789 SdHoareTripleChecker+Invalid, 3388 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 999 IncrementalHoareTripleChecker+Valid, 2389 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2022-11-21 09:16:18,927 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [976 Valid, 789 Invalid, 3388 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [999 Valid, 2389 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2022-11-21 09:16:19,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155554 states. [2022-11-21 09:16:20,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155554 to 153959. [2022-11-21 09:16:20,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153959 states, 153958 states have (on average 1.1226828095974226) internal successors, (172846), 153958 states have internal predecessors, (172846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:16:21,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153959 states to 153959 states and 172846 transitions. [2022-11-21 09:16:21,012 INFO L78 Accepts]: Start accepts. Automaton has 153959 states and 172846 transitions. Word has length 479 [2022-11-21 09:16:21,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 09:16:21,012 INFO L495 AbstractCegarLoop]: Abstraction has 153959 states and 172846 transitions. [2022-11-21 09:16:21,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 81.0) internal successors, (243), 3 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:16:21,013 INFO L276 IsEmpty]: Start isEmpty. Operand 153959 states and 172846 transitions. [2022-11-21 09:16:21,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 577 [2022-11-21 09:16:21,039 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 09:16:21,040 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 09:16:21,045 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3f91a35-3b97-4cac-be56-d7c16bac90d5/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-21 09:16:21,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3f91a35-3b97-4cac-be56-d7c16bac90d5/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 09:16:21,241 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 09:16:21,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:16:21,242 INFO L85 PathProgramCache]: Analyzing trace with hash -1392152019, now seen corresponding path program 1 times [2022-11-21 09:16:21,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:16:21,242 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76509908] [2022-11-21 09:16:21,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:16:21,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:16:21,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:16:22,276 INFO L134 CoverageAnalysis]: Checked inductivity of 1222 backedges. 921 proven. 0 refuted. 0 times theorem prover too weak. 301 trivial. 0 not checked. [2022-11-21 09:16:22,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:16:22,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76509908] [2022-11-21 09:16:22,276 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76509908] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:16:22,277 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 09:16:22,277 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 09:16:22,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716740601] [2022-11-21 09:16:22,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:16:22,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 09:16:22,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:16:22,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 09:16:22,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 09:16:22,286 INFO L87 Difference]: Start difference. First operand 153959 states and 172846 transitions. Second operand has 3 states, 3 states have (on average 113.0) internal successors, (339), 3 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:16:27,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 09:16:27,532 INFO L93 Difference]: Finished difference Result 307136 states and 344913 transitions. [2022-11-21 09:16:27,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 09:16:27,532 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 113.0) internal successors, (339), 3 states have internal predecessors, (339), 0 states have call successors, (0), 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 576 [2022-11-21 09:16:27,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 09:16:27,704 INFO L225 Difference]: With dead ends: 307136 [2022-11-21 09:16:27,704 INFO L226 Difference]: Without dead ends: 153966 [2022-11-21 09:16:27,746 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 09:16:27,747 INFO L413 NwaCegarLoop]: 1423 mSDtfsCounter, 938 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 2493 mSolverCounterSat, 597 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 938 SdHoareTripleChecker+Valid, 1515 SdHoareTripleChecker+Invalid, 3090 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 597 IncrementalHoareTripleChecker+Valid, 2493 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-11-21 09:16:27,747 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [938 Valid, 1515 Invalid, 3090 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [597 Valid, 2493 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2022-11-21 09:16:27,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153966 states. [2022-11-21 09:16:29,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153966 to 153952. [2022-11-21 09:16:29,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153952 states, 153951 states have (on average 1.0902949639820463) internal successors, (167852), 153951 states have internal predecessors, (167852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:16:29,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153952 states to 153952 states and 167852 transitions. [2022-11-21 09:16:29,826 INFO L78 Accepts]: Start accepts. Automaton has 153952 states and 167852 transitions. Word has length 576 [2022-11-21 09:16:29,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 09:16:29,827 INFO L495 AbstractCegarLoop]: Abstraction has 153952 states and 167852 transitions. [2022-11-21 09:16:29,827 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 113.0) internal successors, (339), 3 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:16:29,827 INFO L276 IsEmpty]: Start isEmpty. Operand 153952 states and 167852 transitions. [2022-11-21 09:16:29,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 618 [2022-11-21 09:16:29,856 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 09:16:29,856 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 09:16:29,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-21 09:16:29,857 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 09:16:29,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:16:29,857 INFO L85 PathProgramCache]: Analyzing trace with hash -137971810, now seen corresponding path program 1 times [2022-11-21 09:16:29,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:16:29,858 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090904171] [2022-11-21 09:16:29,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:16:29,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:16:30,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:16:32,875 INFO L134 CoverageAnalysis]: Checked inductivity of 1257 backedges. 715 proven. 0 refuted. 0 times theorem prover too weak. 542 trivial. 0 not checked. [2022-11-21 09:16:32,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:16:32,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090904171] [2022-11-21 09:16:32,876 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1090904171] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:16:32,876 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 09:16:32,876 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 09:16:32,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380306397] [2022-11-21 09:16:32,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:16:32,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 09:16:32,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:16:32,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 09:16:32,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-21 09:16:32,879 INFO L87 Difference]: Start difference. First operand 153952 states and 167852 transitions. Second operand has 5 states, 5 states have (on average 69.0) internal successors, (345), 5 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:16:39,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 09:16:39,465 INFO L93 Difference]: Finished difference Result 296072 states and 324419 transitions. [2022-11-21 09:16:39,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 09:16:39,466 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 69.0) internal successors, (345), 5 states have internal predecessors, (345), 0 states have call successors, (0), 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 617 [2022-11-21 09:16:39,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 09:16:39,641 INFO L225 Difference]: With dead ends: 296072 [2022-11-21 09:16:39,641 INFO L226 Difference]: Without dead ends: 162592 [2022-11-21 09:16:39,675 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-11-21 09:16:39,676 INFO L413 NwaCegarLoop]: 369 mSDtfsCounter, 1330 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 3903 mSolverCounterSat, 860 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1330 SdHoareTripleChecker+Valid, 412 SdHoareTripleChecker+Invalid, 4763 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 860 IncrementalHoareTripleChecker+Valid, 3903 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2022-11-21 09:16:39,676 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1330 Valid, 412 Invalid, 4763 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [860 Valid, 3903 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2022-11-21 09:16:39,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162592 states. [2022-11-21 09:16:41,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162592 to 162577. [2022-11-21 09:16:41,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162577 states, 162576 states have (on average 1.0854369648656628) internal successors, (176466), 162576 states have internal predecessors, (176466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:16:42,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162577 states to 162577 states and 176466 transitions. [2022-11-21 09:16:42,112 INFO L78 Accepts]: Start accepts. Automaton has 162577 states and 176466 transitions. Word has length 617 [2022-11-21 09:16:42,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 09:16:42,113 INFO L495 AbstractCegarLoop]: Abstraction has 162577 states and 176466 transitions. [2022-11-21 09:16:42,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 69.0) internal successors, (345), 5 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:16:42,113 INFO L276 IsEmpty]: Start isEmpty. Operand 162577 states and 176466 transitions. [2022-11-21 09:16:42,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 668 [2022-11-21 09:16:42,139 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 09:16:42,139 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 09:16:42,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-21 09:16:42,139 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 09:16:42,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:16:42,140 INFO L85 PathProgramCache]: Analyzing trace with hash 2144326472, now seen corresponding path program 1 times [2022-11-21 09:16:42,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:16:42,140 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054568252] [2022-11-21 09:16:42,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:16:42,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:16:42,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:16:43,588 INFO L134 CoverageAnalysis]: Checked inductivity of 828 backedges. 679 proven. 0 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2022-11-21 09:16:43,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:16:43,588 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054568252] [2022-11-21 09:16:43,589 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2054568252] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:16:43,589 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 09:16:43,589 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-21 09:16:43,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820465719] [2022-11-21 09:16:43,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:16:43,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 09:16:43,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:16:43,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 09:16:43,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 09:16:43,591 INFO L87 Difference]: Start difference. First operand 162577 states and 176466 transitions. Second operand has 4 states, 4 states have (on average 130.0) internal successors, (520), 4 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:16:54,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 09:16:54,129 INFO L93 Difference]: Finished difference Result 424533 states and 462211 transitions. [2022-11-21 09:16:54,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-21 09:16:54,130 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 130.0) internal successors, (520), 4 states have internal predecessors, (520), 0 states have call successors, (0), 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 667 [2022-11-21 09:16:54,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 09:16:54,512 INFO L225 Difference]: With dead ends: 424533 [2022-11-21 09:16:54,512 INFO L226 Difference]: Without dead ends: 262745 [2022-11-21 09:16:54,617 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 09:16:54,621 INFO L413 NwaCegarLoop]: 655 mSDtfsCounter, 1730 mSDsluCounter, 267 mSDsCounter, 0 mSdLazyCounter, 6464 mSolverCounterSat, 1180 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1730 SdHoareTripleChecker+Valid, 922 SdHoareTripleChecker+Invalid, 7644 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1180 IncrementalHoareTripleChecker+Valid, 6464 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.5s IncrementalHoareTripleChecker+Time [2022-11-21 09:16:54,621 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1730 Valid, 922 Invalid, 7644 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1180 Valid, 6464 Invalid, 0 Unknown, 0 Unchecked, 8.5s Time] [2022-11-21 09:16:54,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262745 states.