./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p22.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p22.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 3eb113140124fef67732f40fc61a49bd06a18a65880ac225aa4f334e11de8939 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-02 20:20:37,949 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:20:37,951 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:20:38,009 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:20:38,009 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:20:38,014 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:20:38,017 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:20:38,022 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:20:38,025 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:20:38,031 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:20:38,032 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:20:38,034 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:20:38,035 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:20:38,038 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:20:38,040 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:20:38,042 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:20:38,043 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:20:38,044 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:20:38,046 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:20:38,052 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:20:38,054 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:20:38,058 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:20:38,059 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:20:38,060 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:20:38,064 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:20:38,064 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:20:38,065 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:20:38,066 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:20:38,066 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:20:38,067 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:20:38,068 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:20:38,075 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:20:38,077 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:20:38,078 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:20:38,080 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:20:38,080 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:20:38,081 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:20:38,081 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:20:38,081 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:20:38,082 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:20:38,083 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:20:38,084 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-11-02 20:20:38,130 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:20:38,130 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:20:38,131 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:20:38,131 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:20:38,132 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:20:38,132 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:20:38,133 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:20:38,134 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:20:38,134 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:20:38,134 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:20:38,134 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 20:20:38,135 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:20:38,135 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 20:20:38,135 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:20:38,135 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 20:20:38,136 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 20:20:38,136 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:20:38,136 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 20:20:38,136 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:20:38,137 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:20:38,137 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:20:38,137 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:20:38,138 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:20:38,138 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:20:38,138 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 20:20:38,138 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 20:20:38,138 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 20:20:38,139 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 20:20:38,139 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 20:20:38,139 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 20:20:38,139 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_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3eb113140124fef67732f40fc61a49bd06a18a65880ac225aa4f334e11de8939 [2022-11-02 20:20:38,541 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:20:38,575 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:20:38,578 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:20:38,580 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:20:38,590 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:20:38,592 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p22.c [2022-11-02 20:20:38,685 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/data/8ed24dec3/b6d6fdacfa5a4288af13ec58f0d43067/FLAG039963c46 [2022-11-02 20:20:39,361 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:20:39,362 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p22.c [2022-11-02 20:20:39,372 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/data/8ed24dec3/b6d6fdacfa5a4288af13ec58f0d43067/FLAG039963c46 [2022-11-02 20:20:39,654 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/data/8ed24dec3/b6d6fdacfa5a4288af13ec58f0d43067 [2022-11-02 20:20:39,658 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:20:39,661 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:20:39,668 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:20:39,668 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:20:39,672 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:20:39,674 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:20:39" (1/1) ... [2022-11-02 20:20:39,676 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a0c23c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:20:39, skipping insertion in model container [2022-11-02 20:20:39,676 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:20:39" (1/1) ... [2022-11-02 20:20:39,684 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:20:39,742 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:20:40,028 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p22.c[1107,1120] [2022-11-02 20:20:40,207 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:20:40,222 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:20:40,238 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p22.c[1107,1120] [2022-11-02 20:20:40,336 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:20:40,350 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:20:40,351 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:20:40 WrapperNode [2022-11-02 20:20:40,351 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:20:40,352 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:20:40,352 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:20:40,353 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:20:40,375 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:20:40" (1/1) ... [2022-11-02 20:20:40,412 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:20:40" (1/1) ... [2022-11-02 20:20:40,472 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 577 [2022-11-02 20:20:40,473 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:20:40,473 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:20:40,474 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:20:40,474 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:20:40,485 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:20:40" (1/1) ... [2022-11-02 20:20:40,486 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:20:40" (1/1) ... [2022-11-02 20:20:40,494 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:20:40" (1/1) ... [2022-11-02 20:20:40,494 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:20:40" (1/1) ... [2022-11-02 20:20:40,511 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:20:40" (1/1) ... [2022-11-02 20:20:40,517 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:20:40" (1/1) ... [2022-11-02 20:20:40,522 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:20:40" (1/1) ... [2022-11-02 20:20:40,526 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:20:40" (1/1) ... [2022-11-02 20:20:40,533 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:20:40,534 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:20:40,534 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:20:40,534 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:20:40,535 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:20:40" (1/1) ... [2022-11-02 20:20:40,542 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:20:40,557 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:20:40,571 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 20:20:40,617 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 20:20:40,642 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:20:40,642 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:20:40,869 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:20:40,872 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:20:41,740 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:20:41,749 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:20:41,753 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-02 20:20:41,756 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:20:41 BoogieIcfgContainer [2022-11-02 20:20:41,757 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:20:41,760 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 20:20:41,760 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 20:20:41,765 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 20:20:41,766 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:20:39" (1/3) ... [2022-11-02 20:20:41,767 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e2a9633 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:20:41, skipping insertion in model container [2022-11-02 20:20:41,768 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:20:40" (2/3) ... [2022-11-02 20:20:41,768 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e2a9633 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:20:41, skipping insertion in model container [2022-11-02 20:20:41,768 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:20:41" (3/3) ... [2022-11-02 20:20:41,770 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p22.c [2022-11-02 20:20:41,792 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 20:20:41,792 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-02 20:20:41,873 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:20:41,881 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;@6383cd99, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:20:41,882 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-02 20:20:41,887 INFO L276 IsEmpty]: Start isEmpty. Operand has 89 states, 87 states have (on average 1.4942528735632183) internal successors, (130), 88 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:20:41,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-02 20:20:41,894 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:20:41,894 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-02 20:20:41,895 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:20:41,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:20:41,901 INFO L85 PathProgramCache]: Analyzing trace with hash 28698761, now seen corresponding path program 1 times [2022-11-02 20:20:41,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:20:41,913 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673159332] [2022-11-02 20:20:41,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:20:41,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:20:42,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:20:42,422 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 20:20:42,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:20:42,552 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 20:20:42,554 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-02 20:20:42,556 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-02 20:20:42,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 20:20:42,563 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-11-02 20:20:42,568 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-02 20:20:42,591 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-02 20:20:42,601 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.11 08:20:42 BoogieIcfgContainer [2022-11-02 20:20:42,601 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-02 20:20:42,602 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-02 20:20:42,602 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-02 20:20:42,602 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-02 20:20:42,603 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:20:41" (3/4) ... [2022-11-02 20:20:42,607 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-02 20:20:42,607 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-02 20:20:42,608 INFO L158 Benchmark]: Toolchain (without parser) took 2946.42ms. Allocated memory is still 151.0MB. Free memory was 113.9MB in the beginning and 98.9MB in the end (delta: 15.0MB). Peak memory consumption was 12.9MB. Max. memory is 16.1GB. [2022-11-02 20:20:42,609 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 90.2MB. Free memory was 62.7MB in the beginning and 62.7MB in the end (delta: 21.8kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-02 20:20:42,610 INFO L158 Benchmark]: CACSL2BoogieTranslator took 683.77ms. Allocated memory is still 151.0MB. Free memory was 113.9MB in the beginning and 117.5MB in the end (delta: -3.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-02 20:20:42,610 INFO L158 Benchmark]: Boogie Procedure Inliner took 120.47ms. Allocated memory is still 151.0MB. Free memory was 117.5MB in the beginning and 111.6MB in the end (delta: 5.9MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-11-02 20:20:42,611 INFO L158 Benchmark]: Boogie Preprocessor took 59.33ms. Allocated memory is still 151.0MB. Free memory was 111.6MB in the beginning and 107.4MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-02 20:20:42,612 INFO L158 Benchmark]: RCFGBuilder took 1223.23ms. Allocated memory is still 151.0MB. Free memory was 107.4MB in the beginning and 62.1MB in the end (delta: 45.3MB). Peak memory consumption was 46.1MB. Max. memory is 16.1GB. [2022-11-02 20:20:42,612 INFO L158 Benchmark]: TraceAbstraction took 841.07ms. Allocated memory is still 151.0MB. Free memory was 62.1MB in the beginning and 98.9MB in the end (delta: -36.8MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-02 20:20:42,613 INFO L158 Benchmark]: Witness Printer took 5.10ms. Allocated memory is still 151.0MB. Free memory is still 98.9MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-02 20:20:42,617 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23ms. Allocated memory is still 90.2MB. Free memory was 62.7MB in the beginning and 62.7MB in the end (delta: 21.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 683.77ms. Allocated memory is still 151.0MB. Free memory was 113.9MB in the beginning and 117.5MB in the end (delta: -3.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 120.47ms. Allocated memory is still 151.0MB. Free memory was 117.5MB in the beginning and 111.6MB in the end (delta: 5.9MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 59.33ms. Allocated memory is still 151.0MB. Free memory was 111.6MB in the beginning and 107.4MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 1223.23ms. Allocated memory is still 151.0MB. Free memory was 107.4MB in the beginning and 62.1MB in the end (delta: 45.3MB). Peak memory consumption was 46.1MB. Max. memory is 16.1GB. * TraceAbstraction took 841.07ms. Allocated memory is still 151.0MB. Free memory was 62.1MB in the beginning and 98.9MB in the end (delta: -36.8MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 5.10ms. Allocated memory is still 151.0MB. Free memory is still 98.9MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 20]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of bitwiseComplement at line 165, overapproximation of bitwiseOr at line 163, overapproximation of bitwiseAnd at line 150. Possible FailurePath: [L25] const SORT_1 mask_SORT_1 = (SORT_1)-1 >> (sizeof(SORT_1) * 8 - 1); [L26] const SORT_1 msb_SORT_1 = (SORT_1)1 << (1 - 1); [L28] const SORT_3 mask_SORT_3 = (SORT_3)-1 >> (sizeof(SORT_3) * 8 - 8); [L29] const SORT_3 msb_SORT_3 = (SORT_3)1 << (8 - 1); [L31] const SORT_10 mask_SORT_10 = (SORT_10)-1 >> (sizeof(SORT_10) * 8 - 32); [L32] const SORT_10 msb_SORT_10 = (SORT_10)1 << (32 - 1); [L34] const SORT_33 mask_SORT_33 = (SORT_33)-1 >> (sizeof(SORT_33) * 8 - 4); [L35] const SORT_33 msb_SORT_33 = (SORT_33)1 << (4 - 1); [L37] const SORT_69 mask_SORT_69 = (SORT_69)-1 >> (sizeof(SORT_69) * 8 - 10); [L38] const SORT_69 msb_SORT_69 = (SORT_69)1 << (10 - 1); [L40] const SORT_3 var_7 = 0; [L41] const SORT_10 var_12 = 0; [L42] const SORT_1 var_14 = 0; [L43] const SORT_10 var_18 = 1; [L44] const SORT_1 var_23 = 1; [L45] const SORT_69 var_70 = 0; [L46] const SORT_10 var_113 = 104; [L48] SORT_1 input_2; [L49] SORT_3 input_4; [L50] SORT_1 input_5; [L51] SORT_1 input_6; [L52] SORT_1 input_31; [L53] SORT_33 input_34; [L54] SORT_1 input_36; [L55] SORT_33 input_38; [L56] SORT_1 input_40; [L57] SORT_1 input_42; [L58] SORT_1 input_48; [L59] SORT_1 input_50; [L60] SORT_1 input_52; [L61] SORT_1 input_57; [L62] SORT_1 input_67; [L63] SORT_3 input_75; [L64] SORT_1 input_82; [L65] SORT_1 input_89; [L66] SORT_1 input_95; [L67] SORT_1 input_101; [L68] SORT_1 input_107; [L69] SORT_1 input_108; [L70] SORT_1 input_109; [L71] SORT_1 input_126; [L72] SORT_69 input_136; [L73] SORT_1 input_144; [L74] SORT_1 input_145; [L75] SORT_1 input_146; [L77] SORT_3 state_8 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L78] SORT_1 state_15 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L79] SORT_1 state_27 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L80] SORT_1 state_29 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L81] SORT_1 state_44 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L82] SORT_1 state_46 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L83] SORT_1 state_54 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L84] SORT_1 state_59 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L85] SORT_1 state_61 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L86] SORT_1 state_63 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L87] SORT_1 state_65 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L88] SORT_69 state_71 = __VERIFIER_nondet_ushort() & mask_SORT_69; [L89] SORT_1 state_73 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L91] SORT_3 init_9_arg_1 = var_7; [L92] state_8 = init_9_arg_1 [L93] SORT_1 init_16_arg_1 = var_14; [L94] state_15 = init_16_arg_1 [L95] SORT_1 init_28_arg_1 = var_14; [L96] state_27 = init_28_arg_1 [L97] SORT_1 init_30_arg_1 = var_14; [L98] state_29 = init_30_arg_1 [L99] SORT_1 init_45_arg_1 = var_14; [L100] state_44 = init_45_arg_1 [L101] SORT_1 init_47_arg_1 = var_14; [L102] state_46 = init_47_arg_1 [L103] SORT_1 init_55_arg_1 = var_23; [L104] state_54 = init_55_arg_1 [L105] SORT_1 init_60_arg_1 = var_14; [L106] state_59 = init_60_arg_1 [L107] SORT_1 init_62_arg_1 = var_14; [L108] state_61 = init_62_arg_1 [L109] SORT_1 init_64_arg_1 = var_14; [L110] state_63 = init_64_arg_1 [L111] SORT_1 init_66_arg_1 = var_14; [L112] state_65 = init_66_arg_1 [L113] SORT_69 init_72_arg_1 = var_70; [L114] state_71 = init_72_arg_1 [L115] SORT_1 init_74_arg_1 = var_14; [L116] state_73 = init_74_arg_1 VAL [init_16_arg_1=0, init_28_arg_1=0, init_30_arg_1=0, init_45_arg_1=0, init_47_arg_1=0, init_55_arg_1=1, init_60_arg_1=0, init_62_arg_1=0, init_64_arg_1=0, init_66_arg_1=0, init_72_arg_1=0, init_74_arg_1=0, init_9_arg_1=0, mask_SORT_1=1, mask_SORT_10=4294967295, mask_SORT_3=255, mask_SORT_33=15, mask_SORT_69=1023, msb_SORT_1=1, msb_SORT_10=2147483648, msb_SORT_3=128, msb_SORT_33=8, msb_SORT_69=512, state_15=0, state_27=0, state_29=0, state_44=0, state_46=0, state_54=1, state_59=0, state_61=0, state_63=0, state_65=0, state_71=0, state_73=0, state_8=0, var_113=104, var_12=0, var_14=0, var_18=1, var_23=1, var_7=0, var_70=0] [L119] input_2 = __VERIFIER_nondet_uchar() [L120] input_4 = __VERIFIER_nondet_uchar() [L121] input_5 = __VERIFIER_nondet_uchar() [L122] input_6 = __VERIFIER_nondet_uchar() [L123] input_31 = __VERIFIER_nondet_uchar() [L124] input_34 = __VERIFIER_nondet_uchar() [L125] input_36 = __VERIFIER_nondet_uchar() [L126] input_38 = __VERIFIER_nondet_uchar() [L127] input_40 = __VERIFIER_nondet_uchar() [L128] input_42 = __VERIFIER_nondet_uchar() [L129] input_48 = __VERIFIER_nondet_uchar() [L130] input_50 = __VERIFIER_nondet_uchar() [L131] input_52 = __VERIFIER_nondet_uchar() [L132] input_57 = __VERIFIER_nondet_uchar() [L133] input_67 = __VERIFIER_nondet_uchar() [L134] input_75 = __VERIFIER_nondet_uchar() [L135] input_82 = __VERIFIER_nondet_uchar() [L136] input_89 = __VERIFIER_nondet_uchar() [L137] input_95 = __VERIFIER_nondet_uchar() [L138] input_101 = __VERIFIER_nondet_uchar() [L139] input_107 = __VERIFIER_nondet_uchar() [L140] input_108 = __VERIFIER_nondet_uchar() [L141] input_109 = __VERIFIER_nondet_uchar() [L142] input_126 = __VERIFIER_nondet_uchar() [L143] input_136 = __VERIFIER_nondet_ushort() [L144] input_144 = __VERIFIER_nondet_uchar() [L145] input_145 = __VERIFIER_nondet_uchar() [L146] input_146 = __VERIFIER_nondet_uchar() [L149] SORT_3 var_11_arg_0 = state_8; [L150] var_11_arg_0 = var_11_arg_0 & mask_SORT_3 [L151] SORT_10 var_11 = var_11_arg_0; [L152] SORT_10 var_13_arg_0 = var_11; [L153] SORT_10 var_13_arg_1 = var_12; [L154] SORT_1 var_13 = var_13_arg_0 == var_13_arg_1; [L155] SORT_1 var_17_arg_0 = state_15; [L156] var_17_arg_0 = var_17_arg_0 & mask_SORT_1 [L157] SORT_10 var_17 = var_17_arg_0; [L158] SORT_10 var_19_arg_0 = var_17; [L159] SORT_10 var_19_arg_1 = var_18; [L160] SORT_1 var_19 = var_19_arg_0 == var_19_arg_1; [L161] SORT_1 var_20_arg_0 = var_13; [L162] SORT_1 var_20_arg_1 = var_19; [L163] SORT_1 var_20 = var_20_arg_0 | var_20_arg_1; [L164] SORT_1 var_24_arg_0 = var_20; [L165] SORT_1 var_24 = ~var_24_arg_0; [L166] SORT_1 var_25_arg_0 = var_23; [L167] SORT_1 var_25_arg_1 = var_24; [L168] SORT_1 var_25 = var_25_arg_0 & var_25_arg_1; [L169] var_25 = var_25 & mask_SORT_1 [L170] SORT_1 bad_26_arg_0 = var_25; [L171] CALL __VERIFIER_assert(!(bad_26_arg_0)) [L20] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L20] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 89 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.7s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=89occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 5 NumberOfCodeBlocks, 5 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-11-02 20:20:42,642 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### 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_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p22.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-64bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 3eb113140124fef67732f40fc61a49bd06a18a65880ac225aa4f334e11de8939 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-02 20:20:45,333 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:20:45,336 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:20:45,368 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:20:45,369 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:20:45,370 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:20:45,372 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:20:45,374 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:20:45,376 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:20:45,377 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:20:45,378 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:20:45,380 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:20:45,380 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:20:45,382 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:20:45,383 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:20:45,384 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:20:45,386 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:20:45,387 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:20:45,389 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:20:45,392 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:20:45,394 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:20:45,395 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:20:45,397 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:20:45,398 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:20:45,403 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:20:45,403 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:20:45,404 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:20:45,405 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:20:45,405 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:20:45,407 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:20:45,407 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:20:45,408 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:20:45,409 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:20:45,411 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:20:45,412 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:20:45,412 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:20:45,413 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:20:45,414 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:20:45,414 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:20:45,416 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:20:45,417 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:20:45,418 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2022-11-02 20:20:45,445 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:20:45,446 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:20:45,446 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:20:45,447 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:20:45,448 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:20:45,448 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:20:45,449 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:20:45,449 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:20:45,449 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:20:45,450 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:20:45,450 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:20:45,450 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 20:20:45,450 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:20:45,450 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 20:20:45,451 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-02 20:20:45,451 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-02 20:20:45,451 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-02 20:20:45,451 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 20:20:45,452 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:20:45,452 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 20:20:45,452 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:20:45,452 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:20:45,453 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:20:45,453 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:20:45,453 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:20:45,453 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:20:45,454 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 20:20:45,454 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-02 20:20:45,454 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-02 20:20:45,454 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 20:20:45,454 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 20:20:45,455 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 20:20:45,455 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-02 20:20:45,455 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3eb113140124fef67732f40fc61a49bd06a18a65880ac225aa4f334e11de8939 [2022-11-02 20:20:45,872 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:20:45,916 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:20:45,920 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:20:45,921 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:20:45,922 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:20:45,924 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p22.c [2022-11-02 20:20:46,018 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/data/21f231384/a84e372a5c084b579570814aa125bb5e/FLAGca1d9bc29 [2022-11-02 20:20:46,752 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:20:46,753 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p22.c [2022-11-02 20:20:46,762 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/data/21f231384/a84e372a5c084b579570814aa125bb5e/FLAGca1d9bc29 [2022-11-02 20:20:47,013 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/data/21f231384/a84e372a5c084b579570814aa125bb5e [2022-11-02 20:20:47,015 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:20:47,017 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:20:47,019 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:20:47,019 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:20:47,023 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:20:47,024 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:20:47" (1/1) ... [2022-11-02 20:20:47,026 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@610965e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:20:47, skipping insertion in model container [2022-11-02 20:20:47,026 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:20:47" (1/1) ... [2022-11-02 20:20:47,035 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:20:47,067 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:20:47,202 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p22.c[1107,1120] [2022-11-02 20:20:47,354 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:20:47,358 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:20:47,370 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p22.c[1107,1120] [2022-11-02 20:20:47,482 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:20:47,498 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:20:47,498 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:20:47 WrapperNode [2022-11-02 20:20:47,499 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:20:47,500 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:20:47,500 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:20:47,501 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:20:47,510 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:20:47" (1/1) ... [2022-11-02 20:20:47,528 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:20:47" (1/1) ... [2022-11-02 20:20:47,583 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 577 [2022-11-02 20:20:47,584 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:20:47,585 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:20:47,585 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:20:47,585 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:20:47,617 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:20:47" (1/1) ... [2022-11-02 20:20:47,618 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:20:47" (1/1) ... [2022-11-02 20:20:47,639 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:20:47" (1/1) ... [2022-11-02 20:20:47,639 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:20:47" (1/1) ... [2022-11-02 20:20:47,654 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:20:47" (1/1) ... [2022-11-02 20:20:47,662 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:20:47" (1/1) ... [2022-11-02 20:20:47,665 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:20:47" (1/1) ... [2022-11-02 20:20:47,669 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:20:47" (1/1) ... [2022-11-02 20:20:47,676 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:20:47,677 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:20:47,678 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:20:47,678 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:20:47,679 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:20:47" (1/1) ... [2022-11-02 20:20:47,687 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:20:47,702 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:20:47,716 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 20:20:47,769 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 20:20:47,809 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:20:47,809 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:20:48,085 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:20:48,088 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:20:48,802 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:20:48,812 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:20:48,812 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-02 20:20:48,823 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:20:48 BoogieIcfgContainer [2022-11-02 20:20:48,824 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:20:48,826 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 20:20:48,828 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 20:20:48,832 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 20:20:48,833 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:20:47" (1/3) ... [2022-11-02 20:20:48,834 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42b44492 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:20:48, skipping insertion in model container [2022-11-02 20:20:48,834 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:20:47" (2/3) ... [2022-11-02 20:20:48,835 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42b44492 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:20:48, skipping insertion in model container [2022-11-02 20:20:48,836 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:20:48" (3/3) ... [2022-11-02 20:20:48,837 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p22.c [2022-11-02 20:20:48,859 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 20:20:48,860 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-02 20:20:48,969 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:20:48,980 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;@4a745284, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:20:48,981 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-02 20:20:48,987 INFO L276 IsEmpty]: Start isEmpty. Operand has 89 states, 87 states have (on average 1.4942528735632183) internal successors, (130), 88 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:20:48,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-02 20:20:48,996 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:20:48,996 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-02 20:20:48,998 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:20:49,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:20:49,007 INFO L85 PathProgramCache]: Analyzing trace with hash 28698761, now seen corresponding path program 1 times [2022-11-02 20:20:49,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:20:49,027 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2072236836] [2022-11-02 20:20:49,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:20:49,028 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:20:49,029 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:20:49,041 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:20:49,077 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-02 20:20:49,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:20:49,305 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-02 20:20:49,320 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:20:49,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:20:49,510 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:20:49,511 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:20:49,511 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2072236836] [2022-11-02 20:20:49,512 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2072236836] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:20:49,512 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:20:49,513 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:20:49,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482065043] [2022-11-02 20:20:49,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:20:49,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:20:49,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:20:49,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:20:49,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:20:49,563 INFO L87 Difference]: Start difference. First operand has 89 states, 87 states have (on average 1.4942528735632183) internal successors, (130), 88 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:20:49,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:20:49,780 INFO L93 Difference]: Finished difference Result 254 states and 381 transitions. [2022-11-02 20:20:49,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:20:49,784 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 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 5 [2022-11-02 20:20:49,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:20:49,795 INFO L225 Difference]: With dead ends: 254 [2022-11-02 20:20:49,796 INFO L226 Difference]: Without dead ends: 167 [2022-11-02 20:20:49,800 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:20:49,803 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 237 mSDsluCounter, 231 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 237 SdHoareTripleChecker+Valid, 342 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:20:49,805 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [237 Valid, 342 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:20:49,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2022-11-02 20:20:49,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 87. [2022-11-02 20:20:49,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 86 states have (on average 1.4651162790697674) internal successors, (126), 86 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:20:49,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 126 transitions. [2022-11-02 20:20:49,851 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 126 transitions. Word has length 5 [2022-11-02 20:20:49,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:20:49,853 INFO L495 AbstractCegarLoop]: Abstraction has 87 states and 126 transitions. [2022-11-02 20:20:49,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:20:49,853 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 126 transitions. [2022-11-02 20:20:49,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-11-02 20:20:49,858 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:20:49,860 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-02 20:20:49,875 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2022-11-02 20:20:50,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:20:50,076 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:20:50,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:20:50,077 INFO L85 PathProgramCache]: Analyzing trace with hash -779517679, now seen corresponding path program 1 times [2022-11-02 20:20:50,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:20:50,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2010490708] [2022-11-02 20:20:50,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:20:50,086 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:20:50,086 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:20:50,088 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:20:50,129 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-02 20:20:50,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:20:50,425 INFO L263 TraceCheckSpWp]: Trace formula consists of 443 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 20:20:50,430 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:20:50,487 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:20:50,490 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:20:50,492 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:20:50,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2010490708] [2022-11-02 20:20:50,493 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2010490708] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:20:50,493 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:20:50,493 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:20:50,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762619741] [2022-11-02 20:20:50,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:20:50,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:20:50,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:20:50,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:20:50,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:20:50,502 INFO L87 Difference]: Start difference. First operand 87 states and 126 transitions. Second operand has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:20:50,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:20:50,572 INFO L93 Difference]: Finished difference Result 331 states and 486 transitions. [2022-11-02 20:20:50,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:20:50,575 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2022-11-02 20:20:50,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:20:50,582 INFO L225 Difference]: With dead ends: 331 [2022-11-02 20:20:50,583 INFO L226 Difference]: Without dead ends: 248 [2022-11-02 20:20:50,584 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:20:50,587 INFO L413 NwaCegarLoop]: 124 mSDtfsCounter, 351 mSDsluCounter, 353 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 351 SdHoareTripleChecker+Valid, 477 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:20:50,588 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [351 Valid, 477 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:20:50,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2022-11-02 20:20:50,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 89. [2022-11-02 20:20:50,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 88 states have (on average 1.4545454545454546) internal successors, (128), 88 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:20:50,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 128 transitions. [2022-11-02 20:20:50,615 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 128 transitions. Word has length 86 [2022-11-02 20:20:50,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:20:50,616 INFO L495 AbstractCegarLoop]: Abstraction has 89 states and 128 transitions. [2022-11-02 20:20:50,617 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:20:50,617 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 128 transitions. [2022-11-02 20:20:50,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-11-02 20:20:50,623 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:20:50,624 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-02 20:20:50,642 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-02 20:20:50,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:20:50,840 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:20:50,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:20:50,841 INFO L85 PathProgramCache]: Analyzing trace with hash -1837355757, now seen corresponding path program 1 times [2022-11-02 20:20:50,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:20:50,842 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1249598904] [2022-11-02 20:20:50,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:20:50,843 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:20:50,843 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:20:50,845 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:20:50,859 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-02 20:20:51,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:20:51,154 INFO L263 TraceCheckSpWp]: Trace formula consists of 443 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-02 20:20:51,161 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:20:51,274 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:20:51,274 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:20:51,274 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:20:51,275 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1249598904] [2022-11-02 20:20:51,276 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1249598904] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:20:51,280 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:20:51,280 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 20:20:51,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236043851] [2022-11-02 20:20:51,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:20:51,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:20:51,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:20:51,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:20:51,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:20:51,284 INFO L87 Difference]: Start difference. First operand 89 states and 128 transitions. Second operand has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 6 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:20:51,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:20:51,532 INFO L93 Difference]: Finished difference Result 256 states and 373 transitions. [2022-11-02 20:20:51,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 20:20:51,533 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 6 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2022-11-02 20:20:51,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:20:51,534 INFO L225 Difference]: With dead ends: 256 [2022-11-02 20:20:51,535 INFO L226 Difference]: Without dead ends: 173 [2022-11-02 20:20:51,535 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:20:51,536 INFO L413 NwaCegarLoop]: 113 mSDtfsCounter, 350 mSDsluCounter, 445 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 350 SdHoareTripleChecker+Valid, 558 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:20:51,537 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [350 Valid, 558 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 20:20:51,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2022-11-02 20:20:51,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 91. [2022-11-02 20:20:51,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 90 states have (on average 1.4444444444444444) internal successors, (130), 90 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:20:51,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 130 transitions. [2022-11-02 20:20:51,551 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 130 transitions. Word has length 86 [2022-11-02 20:20:51,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:20:51,552 INFO L495 AbstractCegarLoop]: Abstraction has 91 states and 130 transitions. [2022-11-02 20:20:51,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 6 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:20:51,552 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 130 transitions. [2022-11-02 20:20:51,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-11-02 20:20:51,562 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:20:51,563 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-02 20:20:51,578 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-02 20:20:51,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:20:51,779 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:20:51,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:20:51,779 INFO L85 PathProgramCache]: Analyzing trace with hash -2077595503, now seen corresponding path program 1 times [2022-11-02 20:20:51,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:20:51,781 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [527696330] [2022-11-02 20:20:51,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:20:51,781 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:20:51,781 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:20:51,783 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:20:51,785 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-02 20:20:52,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:20:52,077 INFO L263 TraceCheckSpWp]: Trace formula consists of 443 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 20:20:52,082 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:20:52,122 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:20:52,124 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:20:52,125 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:20:52,125 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [527696330] [2022-11-02 20:20:52,126 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [527696330] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:20:52,128 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:20:52,129 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:20:52,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373839250] [2022-11-02 20:20:52,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:20:52,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:20:52,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:20:52,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:20:52,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:20:52,150 INFO L87 Difference]: Start difference. First operand 91 states and 130 transitions. Second operand has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:20:52,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:20:52,199 INFO L93 Difference]: Finished difference Result 331 states and 484 transitions. [2022-11-02 20:20:52,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:20:52,200 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2022-11-02 20:20:52,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:20:52,201 INFO L225 Difference]: With dead ends: 331 [2022-11-02 20:20:52,201 INFO L226 Difference]: Without dead ends: 248 [2022-11-02 20:20:52,206 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:20:52,212 INFO L413 NwaCegarLoop]: 125 mSDtfsCounter, 339 mSDsluCounter, 341 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 339 SdHoareTripleChecker+Valid, 466 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:20:52,214 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [339 Valid, 466 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:20:52,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2022-11-02 20:20:52,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 93. [2022-11-02 20:20:52,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 92 states have (on average 1.434782608695652) internal successors, (132), 92 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:20:52,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 132 transitions. [2022-11-02 20:20:52,232 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 132 transitions. Word has length 86 [2022-11-02 20:20:52,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:20:52,234 INFO L495 AbstractCegarLoop]: Abstraction has 93 states and 132 transitions. [2022-11-02 20:20:52,235 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:20:52,235 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 132 transitions. [2022-11-02 20:20:52,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-11-02 20:20:52,236 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:20:52,236 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-02 20:20:52,263 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-02 20:20:52,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:20:52,449 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:20:52,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:20:52,450 INFO L85 PathProgramCache]: Analyzing trace with hash -2050529901, now seen corresponding path program 1 times [2022-11-02 20:20:52,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:20:52,451 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1117507734] [2022-11-02 20:20:52,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:20:52,451 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:20:52,451 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:20:52,452 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:20:52,457 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-02 20:20:52,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:20:52,738 INFO L263 TraceCheckSpWp]: Trace formula consists of 443 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 20:20:52,742 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:20:52,788 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:20:52,788 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:20:52,788 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:20:52,789 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1117507734] [2022-11-02 20:20:52,789 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1117507734] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:20:52,789 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:20:52,789 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:20:52,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571133078] [2022-11-02 20:20:52,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:20:52,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:20:52,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:20:52,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:20:52,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:20:52,799 INFO L87 Difference]: Start difference. First operand 93 states and 132 transitions. Second operand has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:20:52,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:20:52,851 INFO L93 Difference]: Finished difference Result 331 states and 483 transitions. [2022-11-02 20:20:52,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:20:52,852 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2022-11-02 20:20:52,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:20:52,854 INFO L225 Difference]: With dead ends: 331 [2022-11-02 20:20:52,854 INFO L226 Difference]: Without dead ends: 248 [2022-11-02 20:20:52,856 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:20:52,857 INFO L413 NwaCegarLoop]: 127 mSDtfsCounter, 333 mSDsluCounter, 338 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 333 SdHoareTripleChecker+Valid, 465 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:20:52,858 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [333 Valid, 465 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:20:52,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2022-11-02 20:20:52,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 95. [2022-11-02 20:20:52,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 94 states have (on average 1.425531914893617) internal successors, (134), 94 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:20:52,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 134 transitions. [2022-11-02 20:20:52,883 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 134 transitions. Word has length 86 [2022-11-02 20:20:52,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:20:52,883 INFO L495 AbstractCegarLoop]: Abstraction has 95 states and 134 transitions. [2022-11-02 20:20:52,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:20:52,884 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 134 transitions. [2022-11-02 20:20:52,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-11-02 20:20:52,890 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:20:52,891 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-02 20:20:52,905 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-02 20:20:53,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:20:53,106 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:20:53,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:20:53,106 INFO L85 PathProgramCache]: Analyzing trace with hash -316425451, now seen corresponding path program 1 times [2022-11-02 20:20:53,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:20:53,107 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [101580397] [2022-11-02 20:20:53,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:20:53,107 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:20:53,107 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:20:53,108 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:20:53,113 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-02 20:20:53,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:20:53,406 INFO L263 TraceCheckSpWp]: Trace formula consists of 443 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 20:20:53,409 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:20:53,486 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:20:53,486 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:20:53,487 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:20:53,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [101580397] [2022-11-02 20:20:53,487 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [101580397] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:20:53,487 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:20:53,487 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:20:53,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474249892] [2022-11-02 20:20:53,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:20:53,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:20:53,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:20:53,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:20:53,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:20:53,490 INFO L87 Difference]: Start difference. First operand 95 states and 134 transitions. Second operand has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:20:53,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:20:53,540 INFO L93 Difference]: Finished difference Result 331 states and 482 transitions. [2022-11-02 20:20:53,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:20:53,541 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2022-11-02 20:20:53,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:20:53,542 INFO L225 Difference]: With dead ends: 331 [2022-11-02 20:20:53,543 INFO L226 Difference]: Without dead ends: 248 [2022-11-02 20:20:53,543 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:20:53,544 INFO L413 NwaCegarLoop]: 132 mSDtfsCounter, 322 mSDsluCounter, 332 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 322 SdHoareTripleChecker+Valid, 464 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:20:53,544 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [322 Valid, 464 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:20:53,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2022-11-02 20:20:53,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 99. [2022-11-02 20:20:53,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 98 states have (on average 1.4183673469387754) internal successors, (139), 98 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:20:53,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 139 transitions. [2022-11-02 20:20:53,550 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 139 transitions. Word has length 86 [2022-11-02 20:20:53,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:20:53,551 INFO L495 AbstractCegarLoop]: Abstraction has 99 states and 139 transitions. [2022-11-02 20:20:53,551 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:20:53,551 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 139 transitions. [2022-11-02 20:20:53,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-11-02 20:20:53,552 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:20:53,552 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-02 20:20:53,573 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-11-02 20:20:53,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:20:53,768 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:20:53,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:20:53,768 INFO L85 PathProgramCache]: Analyzing trace with hash -1283776105, now seen corresponding path program 1 times [2022-11-02 20:20:53,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:20:53,769 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1033439456] [2022-11-02 20:20:53,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:20:53,770 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:20:53,770 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:20:53,775 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:20:53,791 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-11-02 20:20:54,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:20:54,026 INFO L263 TraceCheckSpWp]: Trace formula consists of 443 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 20:20:54,030 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:20:54,083 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:20:54,083 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:20:54,084 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:20:54,084 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1033439456] [2022-11-02 20:20:54,084 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1033439456] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:20:54,084 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:20:54,085 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:20:54,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101639450] [2022-11-02 20:20:54,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:20:54,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:20:54,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:20:54,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:20:54,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:20:54,087 INFO L87 Difference]: Start difference. First operand 99 states and 139 transitions. Second operand has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:20:54,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:20:54,138 INFO L93 Difference]: Finished difference Result 331 states and 481 transitions. [2022-11-02 20:20:54,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:20:54,139 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2022-11-02 20:20:54,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:20:54,140 INFO L225 Difference]: With dead ends: 331 [2022-11-02 20:20:54,140 INFO L226 Difference]: Without dead ends: 248 [2022-11-02 20:20:54,141 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:20:54,142 INFO L413 NwaCegarLoop]: 134 mSDtfsCounter, 316 mSDsluCounter, 329 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 316 SdHoareTripleChecker+Valid, 463 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:20:54,142 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [316 Valid, 463 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:20:54,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2022-11-02 20:20:54,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 101. [2022-11-02 20:20:54,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 100 states have (on average 1.41) internal successors, (141), 100 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:20:54,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 141 transitions. [2022-11-02 20:20:54,148 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 141 transitions. Word has length 86 [2022-11-02 20:20:54,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:20:54,148 INFO L495 AbstractCegarLoop]: Abstraction has 101 states and 141 transitions. [2022-11-02 20:20:54,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:20:54,149 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 141 transitions. [2022-11-02 20:20:54,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-11-02 20:20:54,150 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:20:54,150 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-02 20:20:54,176 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-11-02 20:20:54,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:20:54,361 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:20:54,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:20:54,362 INFO L85 PathProgramCache]: Analyzing trace with hash -1776402279, now seen corresponding path program 1 times [2022-11-02 20:20:54,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:20:54,363 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1358222521] [2022-11-02 20:20:54,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:20:54,363 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:20:54,363 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:20:54,365 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:20:54,385 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-02 20:20:54,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:20:54,638 INFO L263 TraceCheckSpWp]: Trace formula consists of 443 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 20:20:54,642 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:20:54,694 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:20:54,695 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:20:54,695 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:20:54,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1358222521] [2022-11-02 20:20:54,695 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1358222521] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:20:54,696 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:20:54,696 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:20:54,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206321397] [2022-11-02 20:20:54,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:20:54,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:20:54,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:20:54,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:20:54,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:20:54,698 INFO L87 Difference]: Start difference. First operand 101 states and 141 transitions. Second operand has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:20:54,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:20:54,738 INFO L93 Difference]: Finished difference Result 331 states and 480 transitions. [2022-11-02 20:20:54,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:20:54,739 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2022-11-02 20:20:54,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:20:54,741 INFO L225 Difference]: With dead ends: 331 [2022-11-02 20:20:54,744 INFO L226 Difference]: Without dead ends: 248 [2022-11-02 20:20:54,747 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:20:54,748 INFO L413 NwaCegarLoop]: 139 mSDtfsCounter, 310 mSDsluCounter, 332 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 310 SdHoareTripleChecker+Valid, 471 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:20:54,748 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [310 Valid, 471 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:20:54,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2022-11-02 20:20:54,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 103. [2022-11-02 20:20:54,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 102 states have (on average 1.4019607843137254) internal successors, (143), 102 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:20:54,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 143 transitions. [2022-11-02 20:20:54,757 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 143 transitions. Word has length 86 [2022-11-02 20:20:54,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:20:54,757 INFO L495 AbstractCegarLoop]: Abstraction has 103 states and 143 transitions. [2022-11-02 20:20:54,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:20:54,758 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 143 transitions. [2022-11-02 20:20:54,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-11-02 20:20:54,758 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:20:54,759 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-02 20:20:54,770 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (9)] Ended with exit code 0 [2022-11-02 20:20:54,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:20:54,961 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:20:54,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:20:54,962 INFO L85 PathProgramCache]: Analyzing trace with hash 1302411291, now seen corresponding path program 1 times [2022-11-02 20:20:54,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:20:54,962 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [522073266] [2022-11-02 20:20:54,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:20:54,963 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:20:54,963 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:20:54,964 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:20:54,966 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-11-02 20:20:55,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:20:55,211 INFO L263 TraceCheckSpWp]: Trace formula consists of 443 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 20:20:55,215 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:20:55,282 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:20:55,283 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:20:55,283 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:20:55,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [522073266] [2022-11-02 20:20:55,283 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [522073266] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:20:55,284 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:20:55,284 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:20:55,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315579886] [2022-11-02 20:20:55,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:20:55,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:20:55,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:20:55,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:20:55,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:20:55,286 INFO L87 Difference]: Start difference. First operand 103 states and 143 transitions. Second operand has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:20:55,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:20:55,337 INFO L93 Difference]: Finished difference Result 331 states and 479 transitions. [2022-11-02 20:20:55,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:20:55,337 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2022-11-02 20:20:55,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:20:55,339 INFO L225 Difference]: With dead ends: 331 [2022-11-02 20:20:55,339 INFO L226 Difference]: Without dead ends: 248 [2022-11-02 20:20:55,340 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:20:55,343 INFO L413 NwaCegarLoop]: 146 mSDtfsCounter, 294 mSDsluCounter, 321 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 294 SdHoareTripleChecker+Valid, 467 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:20:55,344 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [294 Valid, 467 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:20:55,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2022-11-02 20:20:55,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 109. [2022-11-02 20:20:55,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 108 states have (on average 1.3981481481481481) internal successors, (151), 108 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:20:55,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 151 transitions. [2022-11-02 20:20:55,368 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 151 transitions. Word has length 86 [2022-11-02 20:20:55,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:20:55,369 INFO L495 AbstractCegarLoop]: Abstraction has 109 states and 151 transitions. [2022-11-02 20:20:55,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:20:55,369 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 151 transitions. [2022-11-02 20:20:55,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-11-02 20:20:55,373 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:20:55,374 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-02 20:20:55,396 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-11-02 20:20:55,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:20:55,575 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:20:55,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:20:55,575 INFO L85 PathProgramCache]: Analyzing trace with hash -1030981347, now seen corresponding path program 1 times [2022-11-02 20:20:55,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:20:55,576 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1337026135] [2022-11-02 20:20:55,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:20:55,576 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:20:55,576 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:20:55,578 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:20:55,582 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-11-02 20:20:55,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:20:55,841 INFO L263 TraceCheckSpWp]: Trace formula consists of 443 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 20:20:55,845 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:20:55,907 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:20:55,907 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:20:55,908 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:20:55,908 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1337026135] [2022-11-02 20:20:55,908 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1337026135] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:20:55,908 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:20:55,908 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:20:55,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993613594] [2022-11-02 20:20:55,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:20:55,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:20:55,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:20:55,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:20:55,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:20:55,911 INFO L87 Difference]: Start difference. First operand 109 states and 151 transitions. Second operand has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:20:55,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:20:55,966 INFO L93 Difference]: Finished difference Result 331 states and 478 transitions. [2022-11-02 20:20:55,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:20:55,967 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2022-11-02 20:20:55,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:20:55,969 INFO L225 Difference]: With dead ends: 331 [2022-11-02 20:20:55,970 INFO L226 Difference]: Without dead ends: 248 [2022-11-02 20:20:55,970 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:20:55,971 INFO L413 NwaCegarLoop]: 148 mSDtfsCounter, 288 mSDsluCounter, 318 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 288 SdHoareTripleChecker+Valid, 466 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:20:55,972 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [288 Valid, 466 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:20:55,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2022-11-02 20:20:55,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 111. [2022-11-02 20:20:55,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 110 states have (on average 1.3909090909090909) internal successors, (153), 110 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:20:55,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 153 transitions. [2022-11-02 20:20:55,979 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 153 transitions. Word has length 86 [2022-11-02 20:20:55,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:20:55,979 INFO L495 AbstractCegarLoop]: Abstraction has 111 states and 153 transitions. [2022-11-02 20:20:55,979 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:20:55,980 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 153 transitions. [2022-11-02 20:20:55,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-11-02 20:20:55,981 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:20:55,981 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-02 20:20:55,993 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-11-02 20:20:56,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:20:56,185 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:20:56,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:20:56,186 INFO L85 PathProgramCache]: Analyzing trace with hash -470281569, now seen corresponding path program 1 times [2022-11-02 20:20:56,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:20:56,186 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [625545987] [2022-11-02 20:20:56,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:20:56,186 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:20:56,186 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:20:56,187 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:20:56,188 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-11-02 20:20:56,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:20:56,444 INFO L263 TraceCheckSpWp]: Trace formula consists of 443 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 20:20:56,447 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:20:56,525 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:20:56,525 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:20:56,526 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:20:56,526 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [625545987] [2022-11-02 20:20:56,526 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [625545987] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:20:56,526 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:20:56,526 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:20:56,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205999691] [2022-11-02 20:20:56,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:20:56,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:20:56,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:20:56,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:20:56,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:20:56,528 INFO L87 Difference]: Start difference. First operand 111 states and 153 transitions. Second operand has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:20:56,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:20:56,582 INFO L93 Difference]: Finished difference Result 331 states and 477 transitions. [2022-11-02 20:20:56,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:20:56,583 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2022-11-02 20:20:56,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:20:56,584 INFO L225 Difference]: With dead ends: 331 [2022-11-02 20:20:56,584 INFO L226 Difference]: Without dead ends: 248 [2022-11-02 20:20:56,585 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:20:56,586 INFO L413 NwaCegarLoop]: 151 mSDtfsCounter, 277 mSDsluCounter, 308 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 277 SdHoareTripleChecker+Valid, 459 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:20:56,586 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [277 Valid, 459 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:20:56,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2022-11-02 20:20:56,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 115. [2022-11-02 20:20:56,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 114 states have (on average 1.3859649122807018) internal successors, (158), 114 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:20:56,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 158 transitions. [2022-11-02 20:20:56,592 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 158 transitions. Word has length 86 [2022-11-02 20:20:56,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:20:56,593 INFO L495 AbstractCegarLoop]: Abstraction has 115 states and 158 transitions. [2022-11-02 20:20:56,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:20:56,593 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 158 transitions. [2022-11-02 20:20:56,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-11-02 20:20:56,594 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:20:56,595 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-02 20:20:56,610 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-11-02 20:20:56,809 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:20:56,810 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:20:56,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:20:56,810 INFO L85 PathProgramCache]: Analyzing trace with hash 916503841, now seen corresponding path program 1 times [2022-11-02 20:20:56,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:20:56,811 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [642783263] [2022-11-02 20:20:56,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:20:56,811 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:20:56,811 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:20:56,812 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:20:56,818 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-11-02 20:20:57,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:20:57,058 INFO L263 TraceCheckSpWp]: Trace formula consists of 443 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 20:20:57,062 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:20:57,143 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:20:57,143 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:20:57,143 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:20:57,143 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [642783263] [2022-11-02 20:20:57,143 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [642783263] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:20:57,143 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:20:57,143 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:20:57,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084666517] [2022-11-02 20:20:57,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:20:57,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:20:57,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:20:57,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:20:57,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:20:57,145 INFO L87 Difference]: Start difference. First operand 115 states and 158 transitions. Second operand has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:20:57,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:20:57,192 INFO L93 Difference]: Finished difference Result 331 states and 476 transitions. [2022-11-02 20:20:57,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:20:57,193 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2022-11-02 20:20:57,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:20:57,194 INFO L225 Difference]: With dead ends: 331 [2022-11-02 20:20:57,194 INFO L226 Difference]: Without dead ends: 248 [2022-11-02 20:20:57,194 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:20:57,195 INFO L413 NwaCegarLoop]: 155 mSDtfsCounter, 271 mSDsluCounter, 309 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 271 SdHoareTripleChecker+Valid, 464 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:20:57,195 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [271 Valid, 464 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:20:57,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2022-11-02 20:20:57,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 117. [2022-11-02 20:20:57,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 116 states have (on average 1.3793103448275863) internal successors, (160), 116 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:20:57,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 160 transitions. [2022-11-02 20:20:57,201 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 160 transitions. Word has length 86 [2022-11-02 20:20:57,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:20:57,201 INFO L495 AbstractCegarLoop]: Abstraction has 117 states and 160 transitions. [2022-11-02 20:20:57,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:20:57,202 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 160 transitions. [2022-11-02 20:20:57,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-11-02 20:20:57,202 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:20:57,203 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-02 20:20:57,220 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-11-02 20:20:57,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:20:57,417 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:20:57,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:20:57,417 INFO L85 PathProgramCache]: Analyzing trace with hash 1360404515, now seen corresponding path program 1 times [2022-11-02 20:20:57,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:20:57,418 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1488946256] [2022-11-02 20:20:57,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:20:57,418 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:20:57,418 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:20:57,419 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:20:57,448 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-11-02 20:20:57,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:20:57,658 INFO L263 TraceCheckSpWp]: Trace formula consists of 443 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 20:20:57,661 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:20:57,750 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:20:57,751 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:20:57,751 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:20:57,751 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1488946256] [2022-11-02 20:20:57,751 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1488946256] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:20:57,751 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:20:57,752 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:20:57,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771063677] [2022-11-02 20:20:57,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:20:57,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:20:57,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:20:57,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:20:57,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:20:57,754 INFO L87 Difference]: Start difference. First operand 117 states and 160 transitions. Second operand has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:20:57,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:20:57,805 INFO L93 Difference]: Finished difference Result 331 states and 475 transitions. [2022-11-02 20:20:57,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:20:57,806 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2022-11-02 20:20:57,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:20:57,808 INFO L225 Difference]: With dead ends: 331 [2022-11-02 20:20:57,808 INFO L226 Difference]: Without dead ends: 248 [2022-11-02 20:20:57,808 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:20:57,809 INFO L413 NwaCegarLoop]: 158 mSDtfsCounter, 260 mSDsluCounter, 299 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 260 SdHoareTripleChecker+Valid, 457 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:20:57,810 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [260 Valid, 457 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:20:57,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2022-11-02 20:20:57,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 121. [2022-11-02 20:20:57,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 120 states have (on average 1.375) internal successors, (165), 120 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:20:57,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 165 transitions. [2022-11-02 20:20:57,816 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 165 transitions. Word has length 86 [2022-11-02 20:20:57,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:20:57,816 INFO L495 AbstractCegarLoop]: Abstraction has 121 states and 165 transitions. [2022-11-02 20:20:57,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:20:57,817 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 165 transitions. [2022-11-02 20:20:57,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-11-02 20:20:57,818 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:20:57,818 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-02 20:20:57,833 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-11-02 20:20:58,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:20:58,033 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:20:58,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:20:58,033 INFO L85 PathProgramCache]: Analyzing trace with hash 1344885797, now seen corresponding path program 1 times [2022-11-02 20:20:58,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:20:58,034 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1035429287] [2022-11-02 20:20:58,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:20:58,034 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:20:58,034 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:20:58,035 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:20:58,044 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-11-02 20:20:58,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:20:58,278 INFO L263 TraceCheckSpWp]: Trace formula consists of 443 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-02 20:20:58,283 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:20:58,544 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:20:58,545 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:20:58,545 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:20:58,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1035429287] [2022-11-02 20:20:58,545 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1035429287] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:20:58,545 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:20:58,546 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:20:58,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156436390] [2022-11-02 20:20:58,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:20:58,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:20:58,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:20:58,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:20:58,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:20:58,548 INFO L87 Difference]: Start difference. First operand 121 states and 165 transitions. Second operand has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:20:58,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:20:58,644 INFO L93 Difference]: Finished difference Result 370 states and 530 transitions. [2022-11-02 20:20:58,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:20:58,645 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2022-11-02 20:20:58,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:20:58,647 INFO L225 Difference]: With dead ends: 370 [2022-11-02 20:20:58,647 INFO L226 Difference]: Without dead ends: 287 [2022-11-02 20:20:58,647 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:20:58,648 INFO L413 NwaCegarLoop]: 161 mSDtfsCounter, 426 mSDsluCounter, 525 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 426 SdHoareTripleChecker+Valid, 686 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:20:58,648 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [426 Valid, 686 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:20:58,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2022-11-02 20:20:58,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 125. [2022-11-02 20:20:58,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 124 states have (on average 1.3709677419354838) internal successors, (170), 124 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:20:58,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 170 transitions. [2022-11-02 20:20:58,663 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 170 transitions. Word has length 86 [2022-11-02 20:20:58,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:20:58,664 INFO L495 AbstractCegarLoop]: Abstraction has 125 states and 170 transitions. [2022-11-02 20:20:58,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:20:58,665 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 170 transitions. [2022-11-02 20:20:58,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-11-02 20:20:58,666 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:20:58,666 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-02 20:20:58,689 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2022-11-02 20:20:58,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:20:58,885 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:20:58,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:20:58,886 INFO L85 PathProgramCache]: Analyzing trace with hash -2056595161, now seen corresponding path program 1 times [2022-11-02 20:20:58,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:20:58,886 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1051956194] [2022-11-02 20:20:58,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:20:58,887 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:20:58,887 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:20:58,888 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:20:58,889 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-11-02 20:20:59,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:20:59,132 INFO L263 TraceCheckSpWp]: Trace formula consists of 443 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 20:20:59,135 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:20:59,245 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:20:59,245 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:20:59,246 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:20:59,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1051956194] [2022-11-02 20:20:59,246 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1051956194] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:20:59,246 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:20:59,246 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:20:59,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087580486] [2022-11-02 20:20:59,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:20:59,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:20:59,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:20:59,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:20:59,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:20:59,252 INFO L87 Difference]: Start difference. First operand 125 states and 170 transitions. Second operand has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:20:59,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:20:59,338 INFO L93 Difference]: Finished difference Result 331 states and 473 transitions. [2022-11-02 20:20:59,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:20:59,339 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2022-11-02 20:20:59,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:20:59,340 INFO L225 Difference]: With dead ends: 331 [2022-11-02 20:20:59,341 INFO L226 Difference]: Without dead ends: 248 [2022-11-02 20:20:59,343 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:20:59,344 INFO L413 NwaCegarLoop]: 161 mSDtfsCounter, 243 mSDsluCounter, 282 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 243 SdHoareTripleChecker+Valid, 443 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:20:59,344 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [243 Valid, 443 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:20:59,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2022-11-02 20:20:59,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 127. [2022-11-02 20:20:59,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 126 states have (on average 1.3650793650793651) internal successors, (172), 126 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:20:59,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 172 transitions. [2022-11-02 20:20:59,354 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 172 transitions. Word has length 86 [2022-11-02 20:20:59,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:20:59,355 INFO L495 AbstractCegarLoop]: Abstraction has 127 states and 172 transitions. [2022-11-02 20:20:59,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:20:59,355 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 172 transitions. [2022-11-02 20:20:59,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-11-02 20:20:59,356 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:20:59,356 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-02 20:20:59,378 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-11-02 20:20:59,573 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:20:59,573 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:20:59,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:20:59,573 INFO L85 PathProgramCache]: Analyzing trace with hash 1340978857, now seen corresponding path program 1 times [2022-11-02 20:20:59,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:20:59,574 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [446615084] [2022-11-02 20:20:59,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:20:59,574 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:20:59,574 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:20:59,575 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:20:59,578 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-11-02 20:20:59,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:20:59,834 INFO L263 TraceCheckSpWp]: Trace formula consists of 443 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-02 20:20:59,838 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:21:00,084 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:21:00,085 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:21:00,085 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:21:00,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [446615084] [2022-11-02 20:21:00,085 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [446615084] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:21:00,085 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:21:00,086 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:21:00,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148505247] [2022-11-02 20:21:00,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:21:00,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:21:00,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:21:00,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:21:00,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:21:00,088 INFO L87 Difference]: Start difference. First operand 127 states and 172 transitions. Second operand has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:21:00,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:21:00,187 INFO L93 Difference]: Finished difference Result 370 states and 528 transitions. [2022-11-02 20:21:00,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:21:00,188 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2022-11-02 20:21:00,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:21:00,189 INFO L225 Difference]: With dead ends: 370 [2022-11-02 20:21:00,189 INFO L226 Difference]: Without dead ends: 287 [2022-11-02 20:21:00,190 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:21:00,190 INFO L413 NwaCegarLoop]: 165 mSDtfsCounter, 412 mSDsluCounter, 513 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 412 SdHoareTripleChecker+Valid, 678 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:21:00,190 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [412 Valid, 678 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:21:00,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2022-11-02 20:21:00,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 129. [2022-11-02 20:21:00,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 128 states have (on average 1.359375) internal successors, (174), 128 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:21:00,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 174 transitions. [2022-11-02 20:21:00,196 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 174 transitions. Word has length 86 [2022-11-02 20:21:00,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:21:00,196 INFO L495 AbstractCegarLoop]: Abstraction has 129 states and 174 transitions. [2022-11-02 20:21:00,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:21:00,197 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 174 transitions. [2022-11-02 20:21:00,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-11-02 20:21:00,198 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:21:00,198 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-02 20:21:00,213 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2022-11-02 20:21:00,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:21:00,413 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:21:00,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:21:00,413 INFO L85 PathProgramCache]: Analyzing trace with hash 1764625579, now seen corresponding path program 1 times [2022-11-02 20:21:00,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:21:00,413 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1469637820] [2022-11-02 20:21:00,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:21:00,414 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:21:00,414 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:21:00,415 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:21:00,417 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-11-02 20:21:00,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:21:00,683 INFO L263 TraceCheckSpWp]: Trace formula consists of 443 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 20:21:00,686 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:21:00,791 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:21:00,791 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:21:00,791 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:21:00,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1469637820] [2022-11-02 20:21:00,792 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1469637820] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:21:00,792 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:21:00,792 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:21:00,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194633572] [2022-11-02 20:21:00,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:21:00,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:21:00,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:21:00,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:21:00,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:21:00,794 INFO L87 Difference]: Start difference. First operand 129 states and 174 transitions. Second operand has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:21:00,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:21:00,863 INFO L93 Difference]: Finished difference Result 331 states and 471 transitions. [2022-11-02 20:21:00,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:21:00,864 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2022-11-02 20:21:00,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:21:00,865 INFO L225 Difference]: With dead ends: 331 [2022-11-02 20:21:00,865 INFO L226 Difference]: Without dead ends: 248 [2022-11-02 20:21:00,866 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:21:00,867 INFO L413 NwaCegarLoop]: 165 mSDtfsCounter, 231 mSDsluCounter, 276 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 231 SdHoareTripleChecker+Valid, 441 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:21:00,867 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [231 Valid, 441 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:21:00,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2022-11-02 20:21:00,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 131. [2022-11-02 20:21:00,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 130 states have (on average 1.353846153846154) internal successors, (176), 130 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:21:00,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 176 transitions. [2022-11-02 20:21:00,872 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 176 transitions. Word has length 86 [2022-11-02 20:21:00,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:21:00,873 INFO L495 AbstractCegarLoop]: Abstraction has 131 states and 176 transitions. [2022-11-02 20:21:00,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:21:00,874 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 176 transitions. [2022-11-02 20:21:00,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-11-02 20:21:00,875 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:21:00,875 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-02 20:21:00,896 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (18)] Ended with exit code 0 [2022-11-02 20:21:01,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:21:01,092 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:21:01,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:21:01,092 INFO L85 PathProgramCache]: Analyzing trace with hash -80741587, now seen corresponding path program 1 times [2022-11-02 20:21:01,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:21:01,093 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2056268669] [2022-11-02 20:21:01,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:21:01,093 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:21:01,093 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:21:01,094 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:21:01,095 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-11-02 20:21:01,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:21:01,338 INFO L263 TraceCheckSpWp]: Trace formula consists of 443 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 20:21:01,341 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:21:01,446 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:21:01,446 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:21:01,446 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:21:01,447 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2056268669] [2022-11-02 20:21:01,447 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2056268669] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:21:01,447 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:21:01,447 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:21:01,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421530031] [2022-11-02 20:21:01,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:21:01,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:21:01,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:21:01,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:21:01,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:21:01,462 INFO L87 Difference]: Start difference. First operand 131 states and 176 transitions. Second operand has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:21:01,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:21:01,540 INFO L93 Difference]: Finished difference Result 331 states and 470 transitions. [2022-11-02 20:21:01,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:21:01,541 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2022-11-02 20:21:01,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:21:01,543 INFO L225 Difference]: With dead ends: 331 [2022-11-02 20:21:01,543 INFO L226 Difference]: Without dead ends: 248 [2022-11-02 20:21:01,544 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:21:01,545 INFO L413 NwaCegarLoop]: 167 mSDtfsCounter, 225 mSDsluCounter, 273 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 225 SdHoareTripleChecker+Valid, 440 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:21:01,545 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [225 Valid, 440 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:21:01,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2022-11-02 20:21:01,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 133. [2022-11-02 20:21:01,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 132 states have (on average 1.3484848484848484) internal successors, (178), 132 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:21:01,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 178 transitions. [2022-11-02 20:21:01,553 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 178 transitions. Word has length 86 [2022-11-02 20:21:01,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:21:01,553 INFO L495 AbstractCegarLoop]: Abstraction has 133 states and 178 transitions. [2022-11-02 20:21:01,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:21:01,554 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 178 transitions. [2022-11-02 20:21:01,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-11-02 20:21:01,555 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:21:01,555 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-02 20:21:01,572 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2022-11-02 20:21:01,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:21:01,773 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:21:01,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:21:01,773 INFO L85 PathProgramCache]: Analyzing trace with hash 578789935, now seen corresponding path program 1 times [2022-11-02 20:21:01,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:21:01,774 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [597334321] [2022-11-02 20:21:01,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:21:01,774 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:21:01,774 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:21:01,775 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:21:01,779 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-11-02 20:21:02,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:21:02,024 INFO L263 TraceCheckSpWp]: Trace formula consists of 443 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 20:21:02,026 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:21:02,139 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:21:02,139 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:21:02,139 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:21:02,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [597334321] [2022-11-02 20:21:02,140 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [597334321] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:21:02,140 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:21:02,140 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:21:02,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267292017] [2022-11-02 20:21:02,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:21:02,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:21:02,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:21:02,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:21:02,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:21:02,143 INFO L87 Difference]: Start difference. First operand 133 states and 178 transitions. Second operand has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:21:02,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:21:02,197 INFO L93 Difference]: Finished difference Result 331 states and 469 transitions. [2022-11-02 20:21:02,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:21:02,198 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2022-11-02 20:21:02,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:21:02,200 INFO L225 Difference]: With dead ends: 331 [2022-11-02 20:21:02,200 INFO L226 Difference]: Without dead ends: 248 [2022-11-02 20:21:02,200 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:21:02,201 INFO L413 NwaCegarLoop]: 173 mSDtfsCounter, 219 mSDsluCounter, 278 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 451 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:21:02,201 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [219 Valid, 451 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:21:02,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2022-11-02 20:21:02,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 135. [2022-11-02 20:21:02,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 134 states have (on average 1.3432835820895523) internal successors, (180), 134 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:21:02,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 180 transitions. [2022-11-02 20:21:02,207 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 180 transitions. Word has length 86 [2022-11-02 20:21:02,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:21:02,208 INFO L495 AbstractCegarLoop]: Abstraction has 135 states and 180 transitions. [2022-11-02 20:21:02,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:21:02,208 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 180 transitions. [2022-11-02 20:21:02,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-11-02 20:21:02,209 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:21:02,209 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-02 20:21:02,225 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2022-11-02 20:21:02,425 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:21:02,425 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:21:02,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:21:02,425 INFO L85 PathProgramCache]: Analyzing trace with hash -265215567, now seen corresponding path program 1 times [2022-11-02 20:21:02,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:21:02,426 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [161968658] [2022-11-02 20:21:02,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:21:02,426 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:21:02,427 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:21:02,428 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:21:02,437 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2022-11-02 20:21:02,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:21:02,674 INFO L263 TraceCheckSpWp]: Trace formula consists of 443 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 20:21:02,677 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:21:02,814 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:21:02,814 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:21:02,814 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:21:02,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [161968658] [2022-11-02 20:21:02,815 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [161968658] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:21:02,815 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:21:02,815 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:21:02,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766082375] [2022-11-02 20:21:02,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:21:02,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:21:02,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:21:02,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:21:02,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:21:02,820 INFO L87 Difference]: Start difference. First operand 135 states and 180 transitions. Second operand has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:21:02,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:21:02,862 INFO L93 Difference]: Finished difference Result 331 states and 468 transitions. [2022-11-02 20:21:02,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:21:02,863 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2022-11-02 20:21:02,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:21:02,864 INFO L225 Difference]: With dead ends: 331 [2022-11-02 20:21:02,864 INFO L226 Difference]: Without dead ends: 248 [2022-11-02 20:21:02,868 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:21:02,869 INFO L413 NwaCegarLoop]: 181 mSDtfsCounter, 208 mSDsluCounter, 278 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 459 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:21:02,869 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [208 Valid, 459 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:21:02,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2022-11-02 20:21:02,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 139. [2022-11-02 20:21:02,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 138 states have (on average 1.3405797101449275) internal successors, (185), 138 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:21:02,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 185 transitions. [2022-11-02 20:21:02,882 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 185 transitions. Word has length 86 [2022-11-02 20:21:02,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:21:02,882 INFO L495 AbstractCegarLoop]: Abstraction has 139 states and 185 transitions. [2022-11-02 20:21:02,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:21:02,883 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 185 transitions. [2022-11-02 20:21:02,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-11-02 20:21:02,884 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:21:02,884 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-02 20:21:02,901 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2022-11-02 20:21:03,097 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:21:03,097 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:21:03,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:21:03,098 INFO L85 PathProgramCache]: Analyzing trace with hash 436384307, now seen corresponding path program 1 times [2022-11-02 20:21:03,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:21:03,098 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1404822925] [2022-11-02 20:21:03,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:21:03,099 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:21:03,099 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:21:03,100 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:21:03,101 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2022-11-02 20:21:03,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:21:03,323 INFO L263 TraceCheckSpWp]: Trace formula consists of 443 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 20:21:03,325 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:21:03,440 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:21:03,441 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:21:03,441 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:21:03,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1404822925] [2022-11-02 20:21:03,441 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1404822925] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:21:03,442 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:21:03,442 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:21:03,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722381779] [2022-11-02 20:21:03,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:21:03,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:21:03,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:21:03,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:21:03,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:21:03,444 INFO L87 Difference]: Start difference. First operand 139 states and 185 transitions. Second operand has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:21:03,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:21:03,484 INFO L93 Difference]: Finished difference Result 331 states and 467 transitions. [2022-11-02 20:21:03,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:21:03,484 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2022-11-02 20:21:03,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:21:03,486 INFO L225 Difference]: With dead ends: 331 [2022-11-02 20:21:03,486 INFO L226 Difference]: Without dead ends: 248 [2022-11-02 20:21:03,487 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:21:03,487 INFO L413 NwaCegarLoop]: 185 mSDtfsCounter, 197 mSDsluCounter, 270 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 197 SdHoareTripleChecker+Valid, 455 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:21:03,488 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [197 Valid, 455 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:21:03,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2022-11-02 20:21:03,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 143. [2022-11-02 20:21:03,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 142 states have (on average 1.3380281690140845) internal successors, (190), 142 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:21:03,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 190 transitions. [2022-11-02 20:21:03,493 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 190 transitions. Word has length 86 [2022-11-02 20:21:03,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:21:03,494 INFO L495 AbstractCegarLoop]: Abstraction has 143 states and 190 transitions. [2022-11-02 20:21:03,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:21:03,494 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 190 transitions. [2022-11-02 20:21:03,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-11-02 20:21:03,495 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:21:03,495 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-02 20:21:03,511 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2022-11-02 20:21:03,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:21:03,711 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:21:03,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:21:03,712 INFO L85 PathProgramCache]: Analyzing trace with hash -1935354955, now seen corresponding path program 1 times [2022-11-02 20:21:03,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:21:03,712 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [543208399] [2022-11-02 20:21:03,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:21:03,713 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:21:03,713 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:21:03,715 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:21:03,729 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2022-11-02 20:21:03,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:21:03,954 INFO L263 TraceCheckSpWp]: Trace formula consists of 443 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 20:21:03,956 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:21:04,082 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:21:04,082 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:21:04,082 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:21:04,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [543208399] [2022-11-02 20:21:04,083 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [543208399] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:21:04,083 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:21:04,083 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:21:04,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274686245] [2022-11-02 20:21:04,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:21:04,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:21:04,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:21:04,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:21:04,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:21:04,085 INFO L87 Difference]: Start difference. First operand 143 states and 190 transitions. Second operand has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:21:04,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:21:04,126 INFO L93 Difference]: Finished difference Result 331 states and 466 transitions. [2022-11-02 20:21:04,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:21:04,127 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2022-11-02 20:21:04,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:21:04,128 INFO L225 Difference]: With dead ends: 331 [2022-11-02 20:21:04,129 INFO L226 Difference]: Without dead ends: 248 [2022-11-02 20:21:04,129 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:21:04,130 INFO L413 NwaCegarLoop]: 187 mSDtfsCounter, 191 mSDsluCounter, 267 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 191 SdHoareTripleChecker+Valid, 454 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:21:04,130 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [191 Valid, 454 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:21:04,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2022-11-02 20:21:04,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 145. [2022-11-02 20:21:04,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 144 states have (on average 1.3333333333333333) internal successors, (192), 144 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:21:04,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 192 transitions. [2022-11-02 20:21:04,137 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 192 transitions. Word has length 86 [2022-11-02 20:21:04,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:21:04,137 INFO L495 AbstractCegarLoop]: Abstraction has 145 states and 192 transitions. [2022-11-02 20:21:04,137 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:21:04,138 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 192 transitions. [2022-11-02 20:21:04,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-11-02 20:21:04,138 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:21:04,139 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-02 20:21:04,155 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2022-11-02 20:21:04,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:21:04,355 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:21:04,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:21:04,355 INFO L85 PathProgramCache]: Analyzing trace with hash -1794806345, now seen corresponding path program 1 times [2022-11-02 20:21:04,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:21:04,356 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1438841384] [2022-11-02 20:21:04,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:21:04,356 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:21:04,357 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:21:04,357 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:21:04,359 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2022-11-02 20:21:04,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:21:04,586 INFO L263 TraceCheckSpWp]: Trace formula consists of 443 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 20:21:04,589 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:21:04,706 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:21:04,707 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:21:04,707 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:21:04,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1438841384] [2022-11-02 20:21:04,707 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1438841384] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:21:04,708 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:21:04,708 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:21:04,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705541140] [2022-11-02 20:21:04,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:21:04,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:21:04,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:21:04,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:21:04,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:21:04,710 INFO L87 Difference]: Start difference. First operand 145 states and 192 transitions. Second operand has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:21:04,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:21:04,749 INFO L93 Difference]: Finished difference Result 331 states and 465 transitions. [2022-11-02 20:21:04,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:21:04,757 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2022-11-02 20:21:04,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:21:04,759 INFO L225 Difference]: With dead ends: 331 [2022-11-02 20:21:04,759 INFO L226 Difference]: Without dead ends: 248 [2022-11-02 20:21:04,759 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:21:04,760 INFO L413 NwaCegarLoop]: 189 mSDtfsCounter, 185 mSDsluCounter, 264 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 185 SdHoareTripleChecker+Valid, 453 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:21:04,765 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [185 Valid, 453 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:21:04,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2022-11-02 20:21:04,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 147. [2022-11-02 20:21:04,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 146 states have (on average 1.3287671232876712) internal successors, (194), 146 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:21:04,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 194 transitions. [2022-11-02 20:21:04,770 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 194 transitions. Word has length 86 [2022-11-02 20:21:04,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:21:04,771 INFO L495 AbstractCegarLoop]: Abstraction has 147 states and 194 transitions. [2022-11-02 20:21:04,771 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:21:04,771 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 194 transitions. [2022-11-02 20:21:04,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-11-02 20:21:04,772 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:21:04,777 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-02 20:21:04,792 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2022-11-02 20:21:04,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:21:04,992 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:21:04,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:21:04,992 INFO L85 PathProgramCache]: Analyzing trace with hash 694722617, now seen corresponding path program 1 times [2022-11-02 20:21:04,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:21:04,993 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [655946381] [2022-11-02 20:21:04,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:21:04,993 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:21:04,993 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:21:04,994 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:21:04,995 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2022-11-02 20:21:05,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:21:05,230 INFO L263 TraceCheckSpWp]: Trace formula consists of 443 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-02 20:21:05,233 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:21:05,489 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:21:05,489 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:21:05,489 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:21:05,489 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [655946381] [2022-11-02 20:21:05,490 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [655946381] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:21:05,490 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:21:05,490 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:21:05,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013288481] [2022-11-02 20:21:05,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:21:05,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:21:05,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:21:05,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:21:05,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:21:05,492 INFO L87 Difference]: Start difference. First operand 147 states and 194 transitions. Second operand has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:21:05,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:21:05,601 INFO L93 Difference]: Finished difference Result 370 states and 520 transitions. [2022-11-02 20:21:05,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:21:05,602 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2022-11-02 20:21:05,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:21:05,604 INFO L225 Difference]: With dead ends: 370 [2022-11-02 20:21:05,604 INFO L226 Difference]: Without dead ends: 287 [2022-11-02 20:21:05,604 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:21:05,605 INFO L413 NwaCegarLoop]: 187 mSDtfsCounter, 346 mSDsluCounter, 454 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 346 SdHoareTripleChecker+Valid, 641 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:21:05,606 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [346 Valid, 641 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:21:05,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2022-11-02 20:21:05,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 149. [2022-11-02 20:21:05,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 148 states have (on average 1.3243243243243243) internal successors, (196), 148 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:21:05,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 196 transitions. [2022-11-02 20:21:05,612 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 196 transitions. Word has length 86 [2022-11-02 20:21:05,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:21:05,613 INFO L495 AbstractCegarLoop]: Abstraction has 149 states and 196 transitions. [2022-11-02 20:21:05,613 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:21:05,613 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 196 transitions. [2022-11-02 20:21:05,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-11-02 20:21:05,614 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:21:05,614 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-02 20:21:05,631 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2022-11-02 20:21:05,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:21:05,831 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:21:05,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:21:05,832 INFO L85 PathProgramCache]: Analyzing trace with hash 1117424443, now seen corresponding path program 1 times [2022-11-02 20:21:05,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:21:05,832 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1287003228] [2022-11-02 20:21:05,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:21:05,833 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:21:05,833 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:21:05,834 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:21:05,835 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2022-11-02 20:21:06,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:21:06,052 INFO L263 TraceCheckSpWp]: Trace formula consists of 443 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 20:21:06,055 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:21:06,206 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:21:06,207 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:21:06,207 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:21:06,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1287003228] [2022-11-02 20:21:06,207 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1287003228] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:21:06,207 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:21:06,208 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:21:06,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687899684] [2022-11-02 20:21:06,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:21:06,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:21:06,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:21:06,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:21:06,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:21:06,212 INFO L87 Difference]: Start difference. First operand 149 states and 196 transitions. Second operand has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:21:06,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:21:06,283 INFO L93 Difference]: Finished difference Result 331 states and 463 transitions. [2022-11-02 20:21:06,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:21:06,284 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2022-11-02 20:21:06,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:21:06,285 INFO L225 Difference]: With dead ends: 331 [2022-11-02 20:21:06,285 INFO L226 Difference]: Without dead ends: 248 [2022-11-02 20:21:06,286 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:21:06,287 INFO L413 NwaCegarLoop]: 187 mSDtfsCounter, 173 mSDsluCounter, 246 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 433 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:21:06,287 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [173 Valid, 433 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:21:06,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2022-11-02 20:21:06,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 151. [2022-11-02 20:21:06,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 150 states have (on average 1.32) internal successors, (198), 150 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:21:06,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 198 transitions. [2022-11-02 20:21:06,293 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 198 transitions. Word has length 86 [2022-11-02 20:21:06,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:21:06,294 INFO L495 AbstractCegarLoop]: Abstraction has 151 states and 198 transitions. [2022-11-02 20:21:06,294 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:21:06,294 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 198 transitions. [2022-11-02 20:21:06,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-11-02 20:21:06,295 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:21:06,295 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-02 20:21:06,317 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2022-11-02 20:21:06,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:21:06,509 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:21:06,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:21:06,509 INFO L85 PathProgramCache]: Analyzing trace with hash -571519299, now seen corresponding path program 1 times [2022-11-02 20:21:06,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:21:06,510 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1715208153] [2022-11-02 20:21:06,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:21:06,510 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:21:06,510 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:21:06,511 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:21:06,512 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2022-11-02 20:21:06,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:21:06,750 INFO L263 TraceCheckSpWp]: Trace formula consists of 443 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 20:21:06,753 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:21:06,904 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:21:06,904 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:21:06,905 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:21:06,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1715208153] [2022-11-02 20:21:06,905 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1715208153] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:21:06,905 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:21:06,905 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:21:06,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956573948] [2022-11-02 20:21:06,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:21:06,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:21:06,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:21:06,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:21:06,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:21:06,910 INFO L87 Difference]: Start difference. First operand 151 states and 198 transitions. Second operand has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:21:06,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:21:06,982 INFO L93 Difference]: Finished difference Result 331 states and 462 transitions. [2022-11-02 20:21:06,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:21:06,983 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2022-11-02 20:21:06,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:21:06,985 INFO L225 Difference]: With dead ends: 331 [2022-11-02 20:21:06,985 INFO L226 Difference]: Without dead ends: 248 [2022-11-02 20:21:06,985 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:21:06,986 INFO L413 NwaCegarLoop]: 189 mSDtfsCounter, 167 mSDsluCounter, 243 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 432 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:21:06,986 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [167 Valid, 432 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:21:06,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2022-11-02 20:21:06,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 153. [2022-11-02 20:21:06,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 152 states have (on average 1.3157894736842106) internal successors, (200), 152 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:21:06,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 200 transitions. [2022-11-02 20:21:06,999 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 200 transitions. Word has length 86 [2022-11-02 20:21:07,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:21:07,000 INFO L495 AbstractCegarLoop]: Abstraction has 153 states and 200 transitions. [2022-11-02 20:21:07,000 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:21:07,000 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 200 transitions. [2022-11-02 20:21:07,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-11-02 20:21:07,001 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:21:07,001 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-02 20:21:07,015 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2022-11-02 20:21:07,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:21:07,209 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:21:07,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:21:07,209 INFO L85 PathProgramCache]: Analyzing trace with hash 2135100095, now seen corresponding path program 1 times [2022-11-02 20:21:07,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:21:07,210 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1971710638] [2022-11-02 20:21:07,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:21:07,210 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:21:07,211 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:21:07,212 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:21:07,213 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2022-11-02 20:21:07,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:21:07,403 INFO L263 TraceCheckSpWp]: Trace formula consists of 443 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-02 20:21:07,407 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:21:07,661 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:21:07,662 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:21:07,662 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:21:07,662 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1971710638] [2022-11-02 20:21:07,662 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1971710638] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:21:07,662 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:21:07,662 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:21:07,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403328525] [2022-11-02 20:21:07,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:21:07,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:21:07,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:21:07,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:21:07,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:21:07,664 INFO L87 Difference]: Start difference. First operand 153 states and 200 transitions. Second operand has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:21:07,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:21:07,754 INFO L93 Difference]: Finished difference Result 370 states and 517 transitions. [2022-11-02 20:21:07,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:21:07,757 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2022-11-02 20:21:07,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:21:07,759 INFO L225 Difference]: With dead ends: 370 [2022-11-02 20:21:07,759 INFO L226 Difference]: Without dead ends: 287 [2022-11-02 20:21:07,760 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:21:07,760 INFO L413 NwaCegarLoop]: 196 mSDtfsCounter, 320 mSDsluCounter, 430 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 320 SdHoareTripleChecker+Valid, 626 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:21:07,761 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [320 Valid, 626 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:21:07,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2022-11-02 20:21:07,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 157. [2022-11-02 20:21:07,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 156 states have (on average 1.314102564102564) internal successors, (205), 156 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:21:07,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 205 transitions. [2022-11-02 20:21:07,767 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 205 transitions. Word has length 86 [2022-11-02 20:21:07,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:21:07,768 INFO L495 AbstractCegarLoop]: Abstraction has 157 states and 205 transitions. [2022-11-02 20:21:07,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:21:07,768 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 205 transitions. [2022-11-02 20:21:07,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-11-02 20:21:07,769 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:21:07,769 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-02 20:21:07,785 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2022-11-02 20:21:07,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:21:07,985 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:21:07,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:21:07,985 INFO L85 PathProgramCache]: Analyzing trace with hash 1548294081, now seen corresponding path program 1 times [2022-11-02 20:21:07,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:21:07,986 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [268605261] [2022-11-02 20:21:07,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:21:07,986 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:21:07,987 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:21:07,988 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:21:08,025 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2022-11-02 20:21:08,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:21:08,214 INFO L263 TraceCheckSpWp]: Trace formula consists of 443 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 20:21:08,217 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:21:08,367 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:21:08,368 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:21:08,368 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:21:08,368 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [268605261] [2022-11-02 20:21:08,368 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [268605261] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:21:08,368 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:21:08,369 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:21:08,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289604181] [2022-11-02 20:21:08,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:21:08,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:21:08,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:21:08,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:21:08,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:21:08,371 INFO L87 Difference]: Start difference. First operand 157 states and 205 transitions. Second operand has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:21:08,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:21:08,438 INFO L93 Difference]: Finished difference Result 331 states and 460 transitions. [2022-11-02 20:21:08,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:21:08,439 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2022-11-02 20:21:08,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:21:08,440 INFO L225 Difference]: With dead ends: 331 [2022-11-02 20:21:08,440 INFO L226 Difference]: Without dead ends: 248 [2022-11-02 20:21:08,440 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:21:08,441 INFO L413 NwaCegarLoop]: 196 mSDtfsCounter, 150 mSDsluCounter, 234 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 430 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:21:08,441 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [150 Valid, 430 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:21:08,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2022-11-02 20:21:08,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 159. [2022-11-02 20:21:08,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 158 states have (on average 1.3101265822784811) internal successors, (207), 158 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:21:08,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 207 transitions. [2022-11-02 20:21:08,447 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 207 transitions. Word has length 86 [2022-11-02 20:21:08,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:21:08,447 INFO L495 AbstractCegarLoop]: Abstraction has 159 states and 207 transitions. [2022-11-02 20:21:08,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:21:08,448 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 207 transitions. [2022-11-02 20:21:08,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-11-02 20:21:08,448 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:21:08,448 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-02 20:21:08,469 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2022-11-02 20:21:08,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:21:08,665 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:21:08,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:21:08,666 INFO L85 PathProgramCache]: Analyzing trace with hash -2045608637, now seen corresponding path program 1 times [2022-11-02 20:21:08,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:21:08,666 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [25305338] [2022-11-02 20:21:08,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:21:08,667 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:21:08,667 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:21:08,669 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:21:08,706 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2022-11-02 20:21:08,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:21:08,901 INFO L263 TraceCheckSpWp]: Trace formula consists of 443 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-02 20:21:08,903 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:21:09,177 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:21:09,177 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:21:09,177 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:21:09,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [25305338] [2022-11-02 20:21:09,177 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [25305338] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:21:09,177 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:21:09,177 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:21:09,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472844961] [2022-11-02 20:21:09,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:21:09,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:21:09,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:21:09,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:21:09,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:21:09,180 INFO L87 Difference]: Start difference. First operand 159 states and 207 transitions. Second operand has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:21:09,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:21:09,265 INFO L93 Difference]: Finished difference Result 370 states and 515 transitions. [2022-11-02 20:21:09,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:21:09,266 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2022-11-02 20:21:09,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:21:09,268 INFO L225 Difference]: With dead ends: 370 [2022-11-02 20:21:09,268 INFO L226 Difference]: Without dead ends: 287 [2022-11-02 20:21:09,268 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:21:09,269 INFO L413 NwaCegarLoop]: 200 mSDtfsCounter, 306 mSDsluCounter, 418 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 306 SdHoareTripleChecker+Valid, 618 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:21:09,269 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [306 Valid, 618 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:21:09,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2022-11-02 20:21:09,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 161. [2022-11-02 20:21:09,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 160 states have (on average 1.30625) internal successors, (209), 160 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:21:09,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 209 transitions. [2022-11-02 20:21:09,276 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 209 transitions. Word has length 86 [2022-11-02 20:21:09,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:21:09,276 INFO L495 AbstractCegarLoop]: Abstraction has 161 states and 209 transitions. [2022-11-02 20:21:09,276 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:21:09,277 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 209 transitions. [2022-11-02 20:21:09,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-11-02 20:21:09,277 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:21:09,277 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-02 20:21:09,294 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (30)] Ended with exit code 0 [2022-11-02 20:21:09,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:21:09,494 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:21:09,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:21:09,495 INFO L85 PathProgramCache]: Analyzing trace with hash -1365550267, now seen corresponding path program 1 times [2022-11-02 20:21:09,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:21:09,495 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [661475349] [2022-11-02 20:21:09,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:21:09,495 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:21:09,496 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:21:09,496 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:21:09,498 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2022-11-02 20:21:09,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:21:09,697 INFO L263 TraceCheckSpWp]: Trace formula consists of 443 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 20:21:09,699 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:21:09,855 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:21:09,855 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:21:09,855 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:21:09,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [661475349] [2022-11-02 20:21:09,856 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [661475349] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:21:09,856 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:21:09,856 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:21:09,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044204822] [2022-11-02 20:21:09,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:21:09,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:21:09,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:21:09,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:21:09,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:21:09,858 INFO L87 Difference]: Start difference. First operand 161 states and 209 transitions. Second operand has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:21:09,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:21:09,912 INFO L93 Difference]: Finished difference Result 331 states and 458 transitions. [2022-11-02 20:21:09,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:21:09,913 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2022-11-02 20:21:09,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:21:09,915 INFO L225 Difference]: With dead ends: 331 [2022-11-02 20:21:09,915 INFO L226 Difference]: Without dead ends: 248 [2022-11-02 20:21:09,915 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:21:09,916 INFO L413 NwaCegarLoop]: 200 mSDtfsCounter, 138 mSDsluCounter, 228 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 428 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:21:09,917 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 428 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:21:09,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2022-11-02 20:21:09,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 163. [2022-11-02 20:21:09,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 162 states have (on average 1.3024691358024691) internal successors, (211), 162 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:21:09,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 211 transitions. [2022-11-02 20:21:09,923 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 211 transitions. Word has length 86 [2022-11-02 20:21:09,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:21:09,924 INFO L495 AbstractCegarLoop]: Abstraction has 163 states and 211 transitions. [2022-11-02 20:21:09,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:21:09,924 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 211 transitions. [2022-11-02 20:21:09,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-11-02 20:21:09,925 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:21:09,925 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-02 20:21:09,946 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2022-11-02 20:21:10,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:21:10,141 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:21:10,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:21:10,141 INFO L85 PathProgramCache]: Analyzing trace with hash 409457095, now seen corresponding path program 1 times [2022-11-02 20:21:10,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:21:10,142 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [835487114] [2022-11-02 20:21:10,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:21:10,142 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:21:10,142 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:21:10,143 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:21:10,144 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2022-11-02 20:21:10,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:21:10,337 INFO L263 TraceCheckSpWp]: Trace formula consists of 443 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 20:21:10,339 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:21:10,510 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:21:10,510 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:21:10,511 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:21:10,511 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [835487114] [2022-11-02 20:21:10,511 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [835487114] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:21:10,511 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:21:10,511 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:21:10,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319682805] [2022-11-02 20:21:10,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:21:10,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:21:10,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:21:10,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:21:10,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:21:10,513 INFO L87 Difference]: Start difference. First operand 163 states and 211 transitions. Second operand has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:21:10,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:21:10,571 INFO L93 Difference]: Finished difference Result 331 states and 457 transitions. [2022-11-02 20:21:10,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:21:10,572 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2022-11-02 20:21:10,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:21:10,573 INFO L225 Difference]: With dead ends: 331 [2022-11-02 20:21:10,573 INFO L226 Difference]: Without dead ends: 248 [2022-11-02 20:21:10,574 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:21:10,574 INFO L413 NwaCegarLoop]: 202 mSDtfsCounter, 132 mSDsluCounter, 225 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 427 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:21:10,575 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 427 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:21:10,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2022-11-02 20:21:10,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 165. [2022-11-02 20:21:10,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 164 states have (on average 1.298780487804878) internal successors, (213), 164 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:21:10,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 213 transitions. [2022-11-02 20:21:10,580 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 213 transitions. Word has length 86 [2022-11-02 20:21:10,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:21:10,580 INFO L495 AbstractCegarLoop]: Abstraction has 165 states and 213 transitions. [2022-11-02 20:21:10,581 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:21:10,581 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 213 transitions. [2022-11-02 20:21:10,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-11-02 20:21:10,582 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:21:10,582 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-02 20:21:10,598 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (32)] Forceful destruction successful, exit code 0 [2022-11-02 20:21:10,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:21:10,795 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:21:10,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:21:10,796 INFO L85 PathProgramCache]: Analyzing trace with hash 411304137, now seen corresponding path program 1 times [2022-11-02 20:21:10,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:21:10,797 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1762277069] [2022-11-02 20:21:10,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:21:10,797 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:21:10,797 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:21:10,798 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:21:10,799 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2022-11-02 20:21:11,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:21:11,011 INFO L263 TraceCheckSpWp]: Trace formula consists of 443 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-02 20:21:11,014 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:21:11,733 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:21:11,733 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:21:13,274 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:21:13,275 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:21:13,275 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1762277069] [2022-11-02 20:21:13,275 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1762277069] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:21:13,276 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:21:13,276 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2022-11-02 20:21:13,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852567705] [2022-11-02 20:21:13,276 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:21:13,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-02 20:21:13,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:21:13,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-02 20:21:13,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2022-11-02 20:21:13,278 INFO L87 Difference]: Start difference. First operand 165 states and 213 transitions. Second operand has 12 states, 12 states have (on average 14.166666666666666) internal successors, (170), 12 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:21:13,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:21:13,768 INFO L93 Difference]: Finished difference Result 331 states and 456 transitions. [2022-11-02 20:21:13,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-02 20:21:13,769 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 14.166666666666666) internal successors, (170), 12 states have internal predecessors, (170), 0 states have call successors, (0), 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 86 [2022-11-02 20:21:13,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:21:13,770 INFO L225 Difference]: With dead ends: 331 [2022-11-02 20:21:13,770 INFO L226 Difference]: Without dead ends: 329 [2022-11-02 20:21:13,771 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 159 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=113, Invalid=267, Unknown=0, NotChecked=0, Total=380 [2022-11-02 20:21:13,772 INFO L413 NwaCegarLoop]: 278 mSDtfsCounter, 803 mSDsluCounter, 1229 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 803 SdHoareTripleChecker+Valid, 1507 SdHoareTripleChecker+Invalid, 254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 104 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:21:13,772 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [803 Valid, 1507 Invalid, 254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 140 Invalid, 0 Unknown, 104 Unchecked, 0.3s Time] [2022-11-02 20:21:13,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2022-11-02 20:21:13,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 246. [2022-11-02 20:21:13,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 245 states have (on average 1.3591836734693878) internal successors, (333), 245 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:21:13,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 333 transitions. [2022-11-02 20:21:13,782 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 333 transitions. Word has length 86 [2022-11-02 20:21:13,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:21:13,782 INFO L495 AbstractCegarLoop]: Abstraction has 246 states and 333 transitions. [2022-11-02 20:21:13,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 14.166666666666666) internal successors, (170), 12 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:21:13,783 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 333 transitions. [2022-11-02 20:21:13,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-11-02 20:21:13,784 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:21:13,784 INFO L195 NwaCegarLoop]: trace histogram [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, 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] [2022-11-02 20:21:13,799 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (33)] Forceful destruction successful, exit code 0 [2022-11-02 20:21:13,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:21:13,999 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:21:13,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:21:14,000 INFO L85 PathProgramCache]: Analyzing trace with hash 784920785, now seen corresponding path program 1 times [2022-11-02 20:21:14,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:21:14,001 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [33799998] [2022-11-02 20:21:14,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:21:14,001 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:21:14,001 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:21:14,002 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:21:14,003 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2022-11-02 20:21:14,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:21:14,372 INFO L263 TraceCheckSpWp]: Trace formula consists of 789 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-02 20:21:14,377 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:21:14,774 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 81 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:21:14,775 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:21:15,046 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 81 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:21:15,047 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:21:15,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [33799998] [2022-11-02 20:21:15,047 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [33799998] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:21:15,047 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:21:15,048 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2022-11-02 20:21:15,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218906934] [2022-11-02 20:21:15,048 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:21:15,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 20:21:15,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:21:15,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 20:21:15,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:21:15,050 INFO L87 Difference]: Start difference. First operand 246 states and 333 transitions. Second operand has 10 states, 10 states have (on average 24.9) internal successors, (249), 10 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:21:15,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:21:15,528 INFO L93 Difference]: Finished difference Result 750 states and 1069 transitions. [2022-11-02 20:21:15,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-02 20:21:15,529 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 24.9) internal successors, (249), 10 states have internal predecessors, (249), 0 states have call successors, (0), 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 167 [2022-11-02 20:21:15,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:21:15,532 INFO L225 Difference]: With dead ends: 750 [2022-11-02 20:21:15,532 INFO L226 Difference]: Without dead ends: 586 [2022-11-02 20:21:15,535 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 341 GetRequests, 324 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=235, Unknown=0, NotChecked=0, Total=342 [2022-11-02 20:21:15,536 INFO L413 NwaCegarLoop]: 172 mSDtfsCounter, 682 mSDsluCounter, 612 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 682 SdHoareTripleChecker+Valid, 784 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:21:15,536 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [682 Valid, 784 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 20:21:15,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 586 states. [2022-11-02 20:21:15,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 586 to 256. [2022-11-02 20:21:15,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256 states, 255 states have (on average 1.3490196078431373) internal successors, (344), 255 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:21:15,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 344 transitions. [2022-11-02 20:21:15,553 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 344 transitions. Word has length 167 [2022-11-02 20:21:15,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:21:15,553 INFO L495 AbstractCegarLoop]: Abstraction has 256 states and 344 transitions. [2022-11-02 20:21:15,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 24.9) internal successors, (249), 10 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:21:15,554 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 344 transitions. [2022-11-02 20:21:15,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-11-02 20:21:15,566 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:21:15,566 INFO L195 NwaCegarLoop]: trace histogram [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, 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] [2022-11-02 20:21:15,589 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (34)] Forceful destruction successful, exit code 0 [2022-11-02 20:21:15,776 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:21:15,776 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:21:15,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:21:15,777 INFO L85 PathProgramCache]: Analyzing trace with hash -272917293, now seen corresponding path program 1 times [2022-11-02 20:21:15,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:21:15,778 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [728602278] [2022-11-02 20:21:15,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:21:15,778 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:21:15,778 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:21:15,779 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:21:15,780 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2022-11-02 20:21:16,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:21:16,114 INFO L263 TraceCheckSpWp]: Trace formula consists of 789 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-02 20:21:16,119 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:21:16,619 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 79 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-02 20:21:16,619 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:21:17,069 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 79 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-02 20:21:17,070 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:21:17,070 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [728602278] [2022-11-02 20:21:17,070 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [728602278] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:21:17,070 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:21:17,070 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2022-11-02 20:21:17,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702766549] [2022-11-02 20:21:17,071 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:21:17,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-02 20:21:17,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:21:17,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-02 20:21:17,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=265, Unknown=0, NotChecked=0, Total=306 [2022-11-02 20:21:17,073 INFO L87 Difference]: Start difference. First operand 256 states and 344 transitions. Second operand has 18 states, 18 states have (on average 13.722222222222221) internal successors, (247), 18 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:21:18,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:21:18,192 INFO L93 Difference]: Finished difference Result 1302 states and 1862 transitions. [2022-11-02 20:21:18,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-02 20:21:18,193 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 13.722222222222221) internal successors, (247), 18 states have internal predecessors, (247), 0 states have call successors, (0), 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 167 [2022-11-02 20:21:18,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:21:18,198 INFO L225 Difference]: With dead ends: 1302 [2022-11-02 20:21:18,198 INFO L226 Difference]: Without dead ends: 1128 [2022-11-02 20:21:18,200 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 349 GetRequests, 315 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 174 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=289, Invalid=901, Unknown=0, NotChecked=0, Total=1190 [2022-11-02 20:21:18,200 INFO L413 NwaCegarLoop]: 143 mSDtfsCounter, 1958 mSDsluCounter, 3258 mSDsCounter, 0 mSdLazyCounter, 484 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1958 SdHoareTripleChecker+Valid, 3401 SdHoareTripleChecker+Invalid, 526 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 484 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-02 20:21:18,201 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1958 Valid, 3401 Invalid, 526 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 484 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-02 20:21:18,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1128 states. [2022-11-02 20:21:18,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1128 to 428. [2022-11-02 20:21:18,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 428 states, 427 states have (on average 1.3911007025761124) internal successors, (594), 427 states have internal predecessors, (594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:21:18,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 428 states to 428 states and 594 transitions. [2022-11-02 20:21:18,227 INFO L78 Accepts]: Start accepts. Automaton has 428 states and 594 transitions. Word has length 167 [2022-11-02 20:21:18,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:21:18,228 INFO L495 AbstractCegarLoop]: Abstraction has 428 states and 594 transitions. [2022-11-02 20:21:18,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 13.722222222222221) internal successors, (247), 18 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:21:18,229 INFO L276 IsEmpty]: Start isEmpty. Operand 428 states and 594 transitions. [2022-11-02 20:21:18,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-11-02 20:21:18,230 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:21:18,230 INFO L195 NwaCegarLoop]: trace histogram [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, 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] [2022-11-02 20:21:18,250 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (35)] Forceful destruction successful, exit code 0 [2022-11-02 20:21:18,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:21:18,446 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:21:18,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:21:18,447 INFO L85 PathProgramCache]: Analyzing trace with hash -513157039, now seen corresponding path program 1 times [2022-11-02 20:21:18,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:21:18,447 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1979720143] [2022-11-02 20:21:18,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:21:18,448 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:21:18,448 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:21:18,449 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:21:18,487 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2022-11-02 20:21:18,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:21:18,834 INFO L263 TraceCheckSpWp]: Trace formula consists of 789 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-02 20:21:18,840 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:21:19,156 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 77 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:21:19,157 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:21:19,522 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 84 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:21:19,522 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:21:19,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1979720143] [2022-11-02 20:21:19,523 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1979720143] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:21:19,523 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:21:19,523 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 19 [2022-11-02 20:21:19,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506480760] [2022-11-02 20:21:19,523 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:21:19,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-02 20:21:19,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:21:19,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-02 20:21:19,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=298, Unknown=0, NotChecked=0, Total=342 [2022-11-02 20:21:19,525 INFO L87 Difference]: Start difference. First operand 428 states and 594 transitions. Second operand has 19 states, 19 states have (on average 10.789473684210526) internal successors, (205), 19 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:21:20,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:21:20,735 INFO L93 Difference]: Finished difference Result 2834 states and 4074 transitions. [2022-11-02 20:21:20,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-02 20:21:20,735 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 10.789473684210526) internal successors, (205), 19 states have internal predecessors, (205), 0 states have call successors, (0), 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 167 [2022-11-02 20:21:20,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:21:20,749 INFO L225 Difference]: With dead ends: 2834 [2022-11-02 20:21:20,749 INFO L226 Difference]: Without dead ends: 2488 [2022-11-02 20:21:20,751 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 355 GetRequests, 315 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 286 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=408, Invalid=1314, Unknown=0, NotChecked=0, Total=1722 [2022-11-02 20:21:20,752 INFO L413 NwaCegarLoop]: 179 mSDtfsCounter, 2148 mSDsluCounter, 2163 mSDsCounter, 0 mSdLazyCounter, 450 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2148 SdHoareTripleChecker+Valid, 2342 SdHoareTripleChecker+Invalid, 513 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 450 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-02 20:21:20,752 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2148 Valid, 2342 Invalid, 513 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 450 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-02 20:21:20,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2488 states. [2022-11-02 20:21:20,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2488 to 818. [2022-11-02 20:21:20,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 818 states, 817 states have (on average 1.397796817625459) internal successors, (1142), 817 states have internal predecessors, (1142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:21:20,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 818 states to 818 states and 1142 transitions. [2022-11-02 20:21:20,813 INFO L78 Accepts]: Start accepts. Automaton has 818 states and 1142 transitions. Word has length 167 [2022-11-02 20:21:20,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:21:20,814 INFO L495 AbstractCegarLoop]: Abstraction has 818 states and 1142 transitions. [2022-11-02 20:21:20,814 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 10.789473684210526) internal successors, (205), 19 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:21:20,814 INFO L276 IsEmpty]: Start isEmpty. Operand 818 states and 1142 transitions. [2022-11-02 20:21:20,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-11-02 20:21:20,816 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:21:20,817 INFO L195 NwaCegarLoop]: trace histogram [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, 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] [2022-11-02 20:21:20,837 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (36)] Forceful destruction successful, exit code 0 [2022-11-02 20:21:21,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:21:21,033 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:21:21,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:21:21,034 INFO L85 PathProgramCache]: Analyzing trace with hash -486091437, now seen corresponding path program 1 times [2022-11-02 20:21:21,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:21:21,034 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [141086786] [2022-11-02 20:21:21,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:21:21,034 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:21:21,035 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:21:21,035 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:21:21,037 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (37)] Waiting until timeout for monitored process [2022-11-02 20:21:21,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:21:21,359 INFO L263 TraceCheckSpWp]: Trace formula consists of 789 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-02 20:21:21,364 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:21:21,791 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 75 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:21:21,792 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:21:22,169 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 84 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:21:22,170 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:21:22,170 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [141086786] [2022-11-02 20:21:22,170 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [141086786] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:21:22,170 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:21:22,171 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 19 [2022-11-02 20:21:22,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583799870] [2022-11-02 20:21:22,171 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:21:22,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-02 20:21:22,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:21:22,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-02 20:21:22,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=298, Unknown=0, NotChecked=0, Total=342 [2022-11-02 20:21:22,174 INFO L87 Difference]: Start difference. First operand 818 states and 1142 transitions. Second operand has 19 states, 19 states have (on average 10.789473684210526) internal successors, (205), 19 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:21:23,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:21:23,365 INFO L93 Difference]: Finished difference Result 1812 states and 2585 transitions. [2022-11-02 20:21:23,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-02 20:21:23,365 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 10.789473684210526) internal successors, (205), 19 states have internal predecessors, (205), 0 states have call successors, (0), 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 167 [2022-11-02 20:21:23,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:21:23,370 INFO L225 Difference]: With dead ends: 1812 [2022-11-02 20:21:23,370 INFO L226 Difference]: Without dead ends: 1466 [2022-11-02 20:21:23,372 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 355 GetRequests, 315 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 286 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=408, Invalid=1314, Unknown=0, NotChecked=0, Total=1722 [2022-11-02 20:21:23,373 INFO L413 NwaCegarLoop]: 178 mSDtfsCounter, 2046 mSDsluCounter, 2525 mSDsCounter, 0 mSdLazyCounter, 543 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2046 SdHoareTripleChecker+Valid, 2703 SdHoareTripleChecker+Invalid, 605 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 543 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-02 20:21:23,373 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2046 Valid, 2703 Invalid, 605 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 543 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-02 20:21:23,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1466 states. [2022-11-02 20:21:23,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1466 to 646. [2022-11-02 20:21:23,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 646 states, 645 states have (on average 1.378294573643411) internal successors, (889), 645 states have internal predecessors, (889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:21:23,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 646 states to 646 states and 889 transitions. [2022-11-02 20:21:23,407 INFO L78 Accepts]: Start accepts. Automaton has 646 states and 889 transitions. Word has length 167 [2022-11-02 20:21:23,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:21:23,407 INFO L495 AbstractCegarLoop]: Abstraction has 646 states and 889 transitions. [2022-11-02 20:21:23,407 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 10.789473684210526) internal successors, (205), 19 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:21:23,408 INFO L276 IsEmpty]: Start isEmpty. Operand 646 states and 889 transitions. [2022-11-02 20:21:23,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-11-02 20:21:23,409 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:21:23,410 INFO L195 NwaCegarLoop]: trace histogram [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, 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] [2022-11-02 20:21:23,435 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (37)] Forceful destruction successful, exit code 0 [2022-11-02 20:21:23,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:21:23,625 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:21:23,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:21:23,626 INFO L85 PathProgramCache]: Analyzing trace with hash -224337649, now seen corresponding path program 1 times [2022-11-02 20:21:23,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:21:23,626 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [386067106] [2022-11-02 20:21:23,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:21:23,627 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:21:23,627 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:21:23,628 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:21:23,630 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (38)] Waiting until timeout for monitored process [2022-11-02 20:21:23,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:21:23,921 INFO L263 TraceCheckSpWp]: Trace formula consists of 789 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-02 20:21:23,923 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:21:24,095 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2022-11-02 20:21:24,095 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:21:24,096 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:21:24,096 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [386067106] [2022-11-02 20:21:24,096 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [386067106] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:21:24,096 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:21:24,096 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:21:24,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110701932] [2022-11-02 20:21:24,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:21:24,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:21:24,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:21:24,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:21:24,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:21:24,097 INFO L87 Difference]: Start difference. First operand 646 states and 889 transitions. Second operand has 5 states, 5 states have (on average 27.6) internal successors, (138), 5 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:21:24,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:21:24,209 INFO L93 Difference]: Finished difference Result 1045 states and 1464 transitions. [2022-11-02 20:21:24,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:21:24,209 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.6) internal successors, (138), 5 states have internal predecessors, (138), 0 states have call successors, (0), 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 167 [2022-11-02 20:21:24,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:21:24,214 INFO L225 Difference]: With dead ends: 1045 [2022-11-02 20:21:24,214 INFO L226 Difference]: Without dead ends: 653 [2022-11-02 20:21:24,215 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:21:24,216 INFO L413 NwaCegarLoop]: 146 mSDtfsCounter, 246 mSDsluCounter, 339 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 246 SdHoareTripleChecker+Valid, 485 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:21:24,216 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [246 Valid, 485 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:21:24,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 653 states. [2022-11-02 20:21:24,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 653 to 600. [2022-11-02 20:21:24,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 600 states, 599 states have (on average 1.3989983305509182) internal successors, (838), 599 states have internal predecessors, (838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:21:24,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 600 states to 600 states and 838 transitions. [2022-11-02 20:21:24,242 INFO L78 Accepts]: Start accepts. Automaton has 600 states and 838 transitions. Word has length 167 [2022-11-02 20:21:24,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:21:24,242 INFO L495 AbstractCegarLoop]: Abstraction has 600 states and 838 transitions. [2022-11-02 20:21:24,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.6) internal successors, (138), 5 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:21:24,243 INFO L276 IsEmpty]: Start isEmpty. Operand 600 states and 838 transitions. [2022-11-02 20:21:24,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2022-11-02 20:21:24,245 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:21:24,246 INFO L195 NwaCegarLoop]: trace histogram [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, 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] [2022-11-02 20:21:24,266 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (38)] Forceful destruction successful, exit code 0 [2022-11-02 20:21:24,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:21:24,464 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:21:24,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:21:24,465 INFO L85 PathProgramCache]: Analyzing trace with hash -628883387, now seen corresponding path program 2 times [2022-11-02 20:21:24,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:21:24,465 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1092735762] [2022-11-02 20:21:24,466 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 20:21:24,466 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:21:24,466 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:21:24,467 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:21:24,468 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (39)] Waiting until timeout for monitored process [2022-11-02 20:21:24,880 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-02 20:21:24,880 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:21:24,899 INFO L263 TraceCheckSpWp]: Trace formula consists of 1135 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-02 20:21:24,903 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:21:25,275 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 166 proven. 14 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2022-11-02 20:21:25,275 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:21:25,606 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 179 proven. 1 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2022-11-02 20:21:25,606 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:21:25,606 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1092735762] [2022-11-02 20:21:25,606 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1092735762] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:21:25,607 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:21:25,607 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 19 [2022-11-02 20:21:25,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056135637] [2022-11-02 20:21:25,607 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:21:25,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-02 20:21:25,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:21:25,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-02 20:21:25,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=298, Unknown=0, NotChecked=0, Total=342 [2022-11-02 20:21:25,609 INFO L87 Difference]: Start difference. First operand 600 states and 838 transitions. Second operand has 19 states, 19 states have (on average 11.473684210526315) internal successors, (218), 19 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:21:26,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:21:26,847 INFO L93 Difference]: Finished difference Result 2336 states and 3356 transitions. [2022-11-02 20:21:26,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-02 20:21:26,848 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 11.473684210526315) internal successors, (218), 19 states have internal predecessors, (218), 0 states have call successors, (0), 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 248 [2022-11-02 20:21:26,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:21:26,852 INFO L225 Difference]: With dead ends: 2336 [2022-11-02 20:21:26,852 INFO L226 Difference]: Without dead ends: 1818 [2022-11-02 20:21:26,854 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 517 GetRequests, 477 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 299 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=408, Invalid=1314, Unknown=0, NotChecked=0, Total=1722 [2022-11-02 20:21:26,855 INFO L413 NwaCegarLoop]: 178 mSDtfsCounter, 1607 mSDsluCounter, 2767 mSDsCounter, 0 mSdLazyCounter, 531 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1607 SdHoareTripleChecker+Valid, 2945 SdHoareTripleChecker+Invalid, 586 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 531 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-02 20:21:26,855 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1607 Valid, 2945 Invalid, 586 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 531 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-02 20:21:26,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1818 states. [2022-11-02 20:21:26,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1818 to 600. [2022-11-02 20:21:26,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 600 states, 599 states have (on average 1.3956594323873122) internal successors, (836), 599 states have internal predecessors, (836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:21:26,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 600 states to 600 states and 836 transitions. [2022-11-02 20:21:26,897 INFO L78 Accepts]: Start accepts. Automaton has 600 states and 836 transitions. Word has length 248 [2022-11-02 20:21:26,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:21:26,898 INFO L495 AbstractCegarLoop]: Abstraction has 600 states and 836 transitions. [2022-11-02 20:21:26,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 11.473684210526315) internal successors, (218), 19 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:21:26,898 INFO L276 IsEmpty]: Start isEmpty. Operand 600 states and 836 transitions. [2022-11-02 20:21:26,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2022-11-02 20:21:26,900 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:21:26,901 INFO L195 NwaCegarLoop]: trace histogram [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, 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] [2022-11-02 20:21:26,923 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (39)] Forceful destruction successful, exit code 0 [2022-11-02 20:21:27,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:21:27,116 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:21:27,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:21:27,117 INFO L85 PathProgramCache]: Analyzing trace with hash 1265450499, now seen corresponding path program 3 times [2022-11-02 20:21:27,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:21:27,118 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [751098895] [2022-11-02 20:21:27,118 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-02 20:21:27,118 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:21:27,118 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:21:27,120 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:21:27,157 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (40)] Waiting until timeout for monitored process [2022-11-02 20:21:27,410 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-02 20:21:27,410 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:21:27,419 INFO L263 TraceCheckSpWp]: Trace formula consists of 443 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-02 20:21:27,425 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:21:28,123 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 144 proven. 18 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2022-11-02 20:21:28,124 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:21:28,554 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 144 proven. 18 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2022-11-02 20:21:28,555 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:21:28,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [751098895] [2022-11-02 20:21:28,555 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [751098895] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:21:28,555 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:21:28,556 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2022-11-02 20:21:28,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206408996] [2022-11-02 20:21:28,556 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:21:28,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 20:21:28,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:21:28,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 20:21:28,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:21:28,558 INFO L87 Difference]: Start difference. First operand 600 states and 836 transitions. Second operand has 10 states, 10 states have (on average 30.0) internal successors, (300), 10 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:21:29,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:21:29,001 INFO L93 Difference]: Finished difference Result 1727 states and 2429 transitions. [2022-11-02 20:21:29,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-02 20:21:29,002 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 30.0) internal successors, (300), 10 states have internal predecessors, (300), 0 states have call successors, (0), 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 248 [2022-11-02 20:21:29,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:21:29,007 INFO L225 Difference]: With dead ends: 1727 [2022-11-02 20:21:29,007 INFO L226 Difference]: Without dead ends: 1467 [2022-11-02 20:21:29,008 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 501 GetRequests, 486 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=90, Invalid=182, Unknown=0, NotChecked=0, Total=272 [2022-11-02 20:21:29,009 INFO L413 NwaCegarLoop]: 310 mSDtfsCounter, 514 mSDsluCounter, 936 mSDsCounter, 0 mSdLazyCounter, 236 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 514 SdHoareTripleChecker+Valid, 1246 SdHoareTripleChecker+Invalid, 239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:21:29,009 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [514 Valid, 1246 Invalid, 239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 236 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 20:21:29,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1467 states. [2022-11-02 20:21:29,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1467 to 624. [2022-11-02 20:21:29,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 624 states, 623 states have (on average 1.391653290529695) internal successors, (867), 623 states have internal predecessors, (867), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:21:29,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 624 states to 624 states and 867 transitions. [2022-11-02 20:21:29,043 INFO L78 Accepts]: Start accepts. Automaton has 624 states and 867 transitions. Word has length 248 [2022-11-02 20:21:29,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:21:29,044 INFO L495 AbstractCegarLoop]: Abstraction has 624 states and 867 transitions. [2022-11-02 20:21:29,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 30.0) internal successors, (300), 10 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:21:29,044 INFO L276 IsEmpty]: Start isEmpty. Operand 624 states and 867 transitions. [2022-11-02 20:21:29,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2022-11-02 20:21:29,046 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:21:29,047 INFO L195 NwaCegarLoop]: trace histogram [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, 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] [2022-11-02 20:21:29,070 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (40)] Forceful destruction successful, exit code 0 [2022-11-02 20:21:29,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:21:29,262 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:21:29,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:21:29,263 INFO L85 PathProgramCache]: Analyzing trace with hash -645592059, now seen corresponding path program 1 times [2022-11-02 20:21:29,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:21:29,264 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1207503777] [2022-11-02 20:21:29,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:21:29,265 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:21:29,265 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:21:29,266 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:21:29,269 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (41)] Waiting until timeout for monitored process [2022-11-02 20:21:29,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:21:29,693 INFO L263 TraceCheckSpWp]: Trace formula consists of 1135 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-02 20:21:29,698 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:21:30,057 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 166 proven. 16 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2022-11-02 20:21:30,057 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:21:30,415 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 181 proven. 1 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2022-11-02 20:21:30,415 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:21:30,415 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1207503777] [2022-11-02 20:21:30,416 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1207503777] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:21:30,416 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:21:30,416 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 19 [2022-11-02 20:21:30,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890202958] [2022-11-02 20:21:30,416 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:21:30,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-02 20:21:30,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:21:30,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-02 20:21:30,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=298, Unknown=0, NotChecked=0, Total=342 [2022-11-02 20:21:30,418 INFO L87 Difference]: Start difference. First operand 624 states and 867 transitions. Second operand has 19 states, 19 states have (on average 11.578947368421053) internal successors, (220), 19 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:21:31,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:21:31,449 INFO L93 Difference]: Finished difference Result 1876 states and 2672 transitions. [2022-11-02 20:21:31,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-02 20:21:31,450 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 11.578947368421053) internal successors, (220), 19 states have internal predecessors, (220), 0 states have call successors, (0), 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 248 [2022-11-02 20:21:31,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:21:31,454 INFO L225 Difference]: With dead ends: 1876 [2022-11-02 20:21:31,455 INFO L226 Difference]: Without dead ends: 1592 [2022-11-02 20:21:31,456 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 517 GetRequests, 477 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 299 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=408, Invalid=1314, Unknown=0, NotChecked=0, Total=1722 [2022-11-02 20:21:31,456 INFO L413 NwaCegarLoop]: 179 mSDtfsCounter, 1914 mSDsluCounter, 2684 mSDsCounter, 0 mSdLazyCounter, 528 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1914 SdHoareTripleChecker+Valid, 2863 SdHoareTripleChecker+Invalid, 593 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 528 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-02 20:21:31,456 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1914 Valid, 2863 Invalid, 593 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 528 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-02 20:21:31,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1592 states. [2022-11-02 20:21:31,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1592 to 624. [2022-11-02 20:21:31,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 624 states, 623 states have (on average 1.3884430176565008) internal successors, (865), 623 states have internal predecessors, (865), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:21:31,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 624 states to 624 states and 865 transitions. [2022-11-02 20:21:31,498 INFO L78 Accepts]: Start accepts. Automaton has 624 states and 865 transitions. Word has length 248 [2022-11-02 20:21:31,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:21:31,499 INFO L495 AbstractCegarLoop]: Abstraction has 624 states and 865 transitions. [2022-11-02 20:21:31,499 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 11.578947368421053) internal successors, (220), 19 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:21:31,499 INFO L276 IsEmpty]: Start isEmpty. Operand 624 states and 865 transitions. [2022-11-02 20:21:31,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2022-11-02 20:21:31,501 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:21:31,502 INFO L195 NwaCegarLoop]: trace histogram [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, 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] [2022-11-02 20:21:31,521 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (41)] Forceful destruction successful, exit code 0 [2022-11-02 20:21:31,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:21:31,717 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:21:31,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:21:31,717 INFO L85 PathProgramCache]: Analyzing trace with hash -1568759485, now seen corresponding path program 2 times [2022-11-02 20:21:31,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:21:31,719 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1761661539] [2022-11-02 20:21:31,719 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 20:21:31,719 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:21:31,719 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:21:31,720 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:21:31,721 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (42)] Waiting until timeout for monitored process [2022-11-02 20:21:32,062 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-02 20:21:32,062 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:21:32,081 INFO L263 TraceCheckSpWp]: Trace formula consists of 1135 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-02 20:21:32,084 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:21:32,361 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 166 proven. 24 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2022-11-02 20:21:32,361 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:21:32,709 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 166 proven. 24 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2022-11-02 20:21:32,709 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:21:32,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1761661539] [2022-11-02 20:21:32,709 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1761661539] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:21:32,709 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:21:32,709 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 19 [2022-11-02 20:21:32,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744607502] [2022-11-02 20:21:32,710 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:21:32,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-02 20:21:32,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:21:32,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-02 20:21:32,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=300, Unknown=0, NotChecked=0, Total=342 [2022-11-02 20:21:32,712 INFO L87 Difference]: Start difference. First operand 624 states and 865 transitions. Second operand has 19 states, 19 states have (on average 11.368421052631579) internal successors, (216), 19 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:21:33,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:21:33,997 INFO L93 Difference]: Finished difference Result 5122 states and 7288 transitions. [2022-11-02 20:21:33,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-02 20:21:33,998 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 11.368421052631579) internal successors, (216), 19 states have internal predecessors, (216), 0 states have call successors, (0), 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 248 [2022-11-02 20:21:33,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:21:34,007 INFO L225 Difference]: With dead ends: 5122 [2022-11-02 20:21:34,007 INFO L226 Difference]: Without dead ends: 4580 [2022-11-02 20:21:34,008 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 526 GetRequests, 477 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 505 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=578, Invalid=1972, Unknown=0, NotChecked=0, Total=2550 [2022-11-02 20:21:34,009 INFO L413 NwaCegarLoop]: 119 mSDtfsCounter, 4350 mSDsluCounter, 1500 mSDsCounter, 0 mSdLazyCounter, 451 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4350 SdHoareTripleChecker+Valid, 1619 SdHoareTripleChecker+Invalid, 576 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 451 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-02 20:21:34,009 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4350 Valid, 1619 Invalid, 576 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 451 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-02 20:21:34,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4580 states. [2022-11-02 20:21:34,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4580 to 1272. [2022-11-02 20:21:34,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1272 states, 1271 states have (on average 1.3886703383162864) internal successors, (1765), 1271 states have internal predecessors, (1765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:21:34,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1272 states to 1272 states and 1765 transitions. [2022-11-02 20:21:34,094 INFO L78 Accepts]: Start accepts. Automaton has 1272 states and 1765 transitions. Word has length 248 [2022-11-02 20:21:34,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:21:34,094 INFO L495 AbstractCegarLoop]: Abstraction has 1272 states and 1765 transitions. [2022-11-02 20:21:34,095 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 11.368421052631579) internal successors, (216), 19 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:21:34,095 INFO L276 IsEmpty]: Start isEmpty. Operand 1272 states and 1765 transitions. [2022-11-02 20:21:34,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2022-11-02 20:21:34,099 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:21:34,099 INFO L195 NwaCegarLoop]: trace histogram [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, 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] [2022-11-02 20:21:34,124 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (42)] Forceful destruction successful, exit code 0 [2022-11-02 20:21:34,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:21:34,319 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:21:34,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:21:34,320 INFO L85 PathProgramCache]: Analyzing trace with hash -147614333, now seen corresponding path program 1 times [2022-11-02 20:21:34,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:21:34,320 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [151358298] [2022-11-02 20:21:34,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:21:34,321 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:21:34,321 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:21:34,322 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:21:34,323 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (43)] Waiting until timeout for monitored process [2022-11-02 20:21:34,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:21:34,707 INFO L263 TraceCheckSpWp]: Trace formula consists of 1135 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-02 20:21:34,711 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:21:35,029 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 166 proven. 26 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2022-11-02 20:21:35,029 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:21:35,257 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 191 proven. 1 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2022-11-02 20:21:35,257 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:21:35,257 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [151358298] [2022-11-02 20:21:35,257 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [151358298] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:21:35,257 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:21:35,258 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2022-11-02 20:21:35,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81921163] [2022-11-02 20:21:35,258 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:21:35,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-02 20:21:35,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:21:35,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-02 20:21:35,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:21:35,260 INFO L87 Difference]: Start difference. First operand 1272 states and 1765 transitions. Second operand has 11 states, 11 states have (on average 23.272727272727273) internal successors, (256), 11 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:21:35,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:21:35,677 INFO L93 Difference]: Finished difference Result 6188 states and 8777 transitions. [2022-11-02 20:21:35,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-02 20:21:35,678 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 23.272727272727273) internal successors, (256), 11 states have internal predecessors, (256), 0 states have call successors, (0), 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 248 [2022-11-02 20:21:35,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:21:35,706 INFO L225 Difference]: With dead ends: 6188 [2022-11-02 20:21:35,706 INFO L226 Difference]: Without dead ends: 5058 [2022-11-02 20:21:35,707 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 500 GetRequests, 485 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=86, Invalid=186, Unknown=0, NotChecked=0, Total=272 [2022-11-02 20:21:35,708 INFO L413 NwaCegarLoop]: 187 mSDtfsCounter, 840 mSDsluCounter, 1445 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 840 SdHoareTripleChecker+Valid, 1632 SdHoareTripleChecker+Invalid, 235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:21:35,708 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [840 Valid, 1632 Invalid, 235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 213 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 20:21:35,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5058 states. [2022-11-02 20:21:35,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5058 to 2400. [2022-11-02 20:21:35,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2400 states, 2399 states have (on average 1.40100041684035) internal successors, (3361), 2399 states have internal predecessors, (3361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:21:35,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2400 states to 2400 states and 3361 transitions. [2022-11-02 20:21:35,790 INFO L78 Accepts]: Start accepts. Automaton has 2400 states and 3361 transitions. Word has length 248 [2022-11-02 20:21:35,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:21:35,790 INFO L495 AbstractCegarLoop]: Abstraction has 2400 states and 3361 transitions. [2022-11-02 20:21:35,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 23.272727272727273) internal successors, (256), 11 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:21:35,791 INFO L276 IsEmpty]: Start isEmpty. Operand 2400 states and 3361 transitions. [2022-11-02 20:21:35,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2022-11-02 20:21:35,795 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:21:35,796 INFO L195 NwaCegarLoop]: trace histogram [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, 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] [2022-11-02 20:21:35,815 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (43)] Ended with exit code 0 [2022-11-02 20:21:36,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:21:36,015 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:21:36,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:21:36,015 INFO L85 PathProgramCache]: Analyzing trace with hash 262996033, now seen corresponding path program 2 times [2022-11-02 20:21:36,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:21:36,017 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1597412746] [2022-11-02 20:21:36,017 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 20:21:36,017 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:21:36,017 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:21:36,018 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:21:36,019 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (44)] Waiting until timeout for monitored process [2022-11-02 20:21:36,377 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-02 20:21:36,377 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:21:36,396 INFO L263 TraceCheckSpWp]: Trace formula consists of 1135 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-02 20:21:36,399 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:21:36,716 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 166 proven. 30 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2022-11-02 20:21:36,716 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:21:37,071 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 166 proven. 30 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2022-11-02 20:21:37,071 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:21:37,072 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1597412746] [2022-11-02 20:21:37,073 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1597412746] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:21:37,073 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:21:37,073 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 19 [2022-11-02 20:21:37,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992470617] [2022-11-02 20:21:37,074 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:21:37,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-02 20:21:37,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:21:37,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-02 20:21:37,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=300, Unknown=0, NotChecked=0, Total=342 [2022-11-02 20:21:37,076 INFO L87 Difference]: Start difference. First operand 2400 states and 3361 transitions. Second operand has 19 states, 19 states have (on average 12.0) internal successors, (228), 19 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:21:38,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:21:38,669 INFO L93 Difference]: Finished difference Result 17132 states and 24371 transitions. [2022-11-02 20:21:38,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-02 20:21:38,669 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 12.0) internal successors, (228), 19 states have internal predecessors, (228), 0 states have call successors, (0), 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 248 [2022-11-02 20:21:38,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:21:38,718 INFO L225 Difference]: With dead ends: 17132 [2022-11-02 20:21:38,718 INFO L226 Difference]: Without dead ends: 14874 [2022-11-02 20:21:38,722 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 526 GetRequests, 477 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 525 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=578, Invalid=1972, Unknown=0, NotChecked=0, Total=2550 [2022-11-02 20:21:38,722 INFO L413 NwaCegarLoop]: 126 mSDtfsCounter, 3138 mSDsluCounter, 1467 mSDsCounter, 0 mSdLazyCounter, 430 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3138 SdHoareTripleChecker+Valid, 1593 SdHoareTripleChecker+Invalid, 509 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 430 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-02 20:21:38,723 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3138 Valid, 1593 Invalid, 509 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 430 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-02 20:21:38,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14874 states. [2022-11-02 20:21:38,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14874 to 4904. [2022-11-02 20:21:38,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4904 states, 4903 states have (on average 1.3960840301856006) internal successors, (6845), 4903 states have internal predecessors, (6845), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:21:38,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4904 states to 4904 states and 6845 transitions. [2022-11-02 20:21:38,991 INFO L78 Accepts]: Start accepts. Automaton has 4904 states and 6845 transitions. Word has length 248 [2022-11-02 20:21:38,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:21:38,993 INFO L495 AbstractCegarLoop]: Abstraction has 4904 states and 6845 transitions. [2022-11-02 20:21:38,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 12.0) internal successors, (228), 19 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:21:38,994 INFO L276 IsEmpty]: Start isEmpty. Operand 4904 states and 6845 transitions. [2022-11-02 20:21:39,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2022-11-02 20:21:39,003 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:21:39,003 INFO L195 NwaCegarLoop]: trace histogram [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, 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] [2022-11-02 20:21:39,027 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (44)] Forceful destruction successful, exit code 0 [2022-11-02 20:21:39,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:21:39,222 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:21:39,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:21:39,223 INFO L85 PathProgramCache]: Analyzing trace with hash 2067670145, now seen corresponding path program 1 times [2022-11-02 20:21:39,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:21:39,224 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [504308312] [2022-11-02 20:21:39,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:21:39,224 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:21:39,225 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:21:39,225 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:21:39,227 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (45)] Waiting until timeout for monitored process [2022-11-02 20:21:39,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:21:39,587 INFO L263 TraceCheckSpWp]: Trace formula consists of 1135 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-02 20:21:39,591 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:21:39,953 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 166 proven. 32 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2022-11-02 20:21:39,953 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:21:40,232 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 197 proven. 1 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2022-11-02 20:21:40,233 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:21:40,233 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [504308312] [2022-11-02 20:21:40,233 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [504308312] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:21:40,233 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:21:40,233 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2022-11-02 20:21:40,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666009595] [2022-11-02 20:21:40,233 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:21:40,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-02 20:21:40,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:21:40,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-02 20:21:40,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:21:40,235 INFO L87 Difference]: Start difference. First operand 4904 states and 6845 transitions. Second operand has 11 states, 11 states have (on average 23.818181818181817) internal successors, (262), 11 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:21:40,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:21:40,943 INFO L93 Difference]: Finished difference Result 12360 states and 17497 transitions. [2022-11-02 20:21:40,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-02 20:21:40,943 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 23.818181818181817) internal successors, (262), 11 states have internal predecessors, (262), 0 states have call successors, (0), 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 248 [2022-11-02 20:21:40,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:21:40,959 INFO L225 Difference]: With dead ends: 12360 [2022-11-02 20:21:40,959 INFO L226 Difference]: Without dead ends: 9254 [2022-11-02 20:21:40,962 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 500 GetRequests, 485 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=86, Invalid=186, Unknown=0, NotChecked=0, Total=272 [2022-11-02 20:21:40,963 INFO L413 NwaCegarLoop]: 187 mSDtfsCounter, 1046 mSDsluCounter, 1061 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1046 SdHoareTripleChecker+Valid, 1248 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:21:40,963 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1046 Valid, 1248 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 20:21:40,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9254 states. [2022-11-02 20:21:41,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9254 to 4904. [2022-11-02 20:21:41,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4904 states, 4903 states have (on average 1.3911890679176016) internal successors, (6821), 4903 states have internal predecessors, (6821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:21:41,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4904 states to 4904 states and 6821 transitions. [2022-11-02 20:21:41,223 INFO L78 Accepts]: Start accepts. Automaton has 4904 states and 6821 transitions. Word has length 248 [2022-11-02 20:21:41,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:21:41,223 INFO L495 AbstractCegarLoop]: Abstraction has 4904 states and 6821 transitions. [2022-11-02 20:21:41,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 23.818181818181817) internal successors, (262), 11 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:21:41,224 INFO L276 IsEmpty]: Start isEmpty. Operand 4904 states and 6821 transitions. [2022-11-02 20:21:41,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2022-11-02 20:21:41,232 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:21:41,232 INFO L195 NwaCegarLoop]: trace histogram [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, 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] [2022-11-02 20:21:41,253 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (45)] Forceful destruction successful, exit code 0 [2022-11-02 20:21:41,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:21:41,445 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:21:41,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:21:41,446 INFO L85 PathProgramCache]: Analyzing trace with hash 450229695, now seen corresponding path program 2 times [2022-11-02 20:21:41,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:21:41,447 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1467580269] [2022-11-02 20:21:41,447 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 20:21:41,447 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:21:41,447 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:21:41,448 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:21:41,464 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (46)] Waiting until timeout for monitored process [2022-11-02 20:21:41,813 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-02 20:21:41,813 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:21:41,831 INFO L263 TraceCheckSpWp]: Trace formula consists of 1135 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-02 20:21:41,834 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:21:42,141 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 166 proven. 36 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2022-11-02 20:21:42,141 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:21:42,463 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 166 proven. 36 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2022-11-02 20:21:42,463 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:21:42,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1467580269] [2022-11-02 20:21:42,463 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1467580269] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:21:42,463 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:21:42,464 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 19 [2022-11-02 20:21:42,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352280705] [2022-11-02 20:21:42,464 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:21:42,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-02 20:21:42,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:21:42,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-02 20:21:42,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=300, Unknown=0, NotChecked=0, Total=342 [2022-11-02 20:21:42,466 INFO L87 Difference]: Start difference. First operand 4904 states and 6821 transitions. Second operand has 19 states, 19 states have (on average 12.31578947368421) internal successors, (234), 19 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:21:44,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:21:44,438 INFO L93 Difference]: Finished difference Result 20132 states and 28549 transitions. [2022-11-02 20:21:44,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-11-02 20:21:44,439 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 12.31578947368421) internal successors, (234), 19 states have internal predecessors, (234), 0 states have call successors, (0), 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 248 [2022-11-02 20:21:44,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:21:44,467 INFO L225 Difference]: With dead ends: 20132 [2022-11-02 20:21:44,467 INFO L226 Difference]: Without dead ends: 17026 [2022-11-02 20:21:44,472 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 539 GetRequests, 477 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1022 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=881, Invalid=3151, Unknown=0, NotChecked=0, Total=4032 [2022-11-02 20:21:44,472 INFO L413 NwaCegarLoop]: 130 mSDtfsCounter, 3682 mSDsluCounter, 1844 mSDsCounter, 0 mSdLazyCounter, 529 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3682 SdHoareTripleChecker+Valid, 1974 SdHoareTripleChecker+Invalid, 632 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 529 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-02 20:21:44,473 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3682 Valid, 1974 Invalid, 632 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 529 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-02 20:21:44,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17026 states. [2022-11-02 20:21:44,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17026 to 5192. [2022-11-02 20:21:44,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5192 states, 5191 states have (on average 1.3833558081294548) internal successors, (7181), 5191 states have internal predecessors, (7181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:21:44,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5192 states to 5192 states and 7181 transitions. [2022-11-02 20:21:44,781 INFO L78 Accepts]: Start accepts. Automaton has 5192 states and 7181 transitions. Word has length 248 [2022-11-02 20:21:44,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:21:44,781 INFO L495 AbstractCegarLoop]: Abstraction has 5192 states and 7181 transitions. [2022-11-02 20:21:44,782 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 12.31578947368421) internal successors, (234), 19 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:21:44,782 INFO L276 IsEmpty]: Start isEmpty. Operand 5192 states and 7181 transitions. [2022-11-02 20:21:44,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2022-11-02 20:21:44,790 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:21:44,790 INFO L195 NwaCegarLoop]: trace histogram [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, 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] [2022-11-02 20:21:44,813 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (46)] Forceful destruction successful, exit code 0 [2022-11-02 20:21:45,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:21:45,005 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:21:45,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:21:45,005 INFO L85 PathProgramCache]: Analyzing trace with hash 1398690493, now seen corresponding path program 1 times [2022-11-02 20:21:45,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:21:45,006 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1221394925] [2022-11-02 20:21:45,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:21:45,006 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:21:45,007 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:21:45,007 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:21:45,009 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (47)] Waiting until timeout for monitored process [2022-11-02 20:21:45,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:21:45,406 INFO L263 TraceCheckSpWp]: Trace formula consists of 1135 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-02 20:21:45,409 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:21:45,995 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 166 proven. 34 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2022-11-02 20:21:45,995 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:21:46,414 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 166 proven. 34 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2022-11-02 20:21:46,414 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:21:46,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1221394925] [2022-11-02 20:21:46,415 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1221394925] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:21:46,415 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:21:46,415 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2022-11-02 20:21:46,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17831630] [2022-11-02 20:21:46,415 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:21:46,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-02 20:21:46,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:21:46,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-02 20:21:46,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=476, Unknown=0, NotChecked=0, Total=552 [2022-11-02 20:21:46,417 INFO L87 Difference]: Start difference. First operand 5192 states and 7181 transitions. Second operand has 24 states, 24 states have (on average 13.166666666666666) internal successors, (316), 24 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:21:49,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:21:49,795 INFO L93 Difference]: Finished difference Result 23370 states and 32704 transitions. [2022-11-02 20:21:49,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2022-11-02 20:21:49,795 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 13.166666666666666) internal successors, (316), 24 states have internal predecessors, (316), 0 states have call successors, (0), 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 248 [2022-11-02 20:21:49,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:21:49,827 INFO L225 Difference]: With dead ends: 23370 [2022-11-02 20:21:49,827 INFO L226 Difference]: Without dead ends: 20072 [2022-11-02 20:21:49,833 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 562 GetRequests, 472 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2433 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1627, Invalid=6745, Unknown=0, NotChecked=0, Total=8372 [2022-11-02 20:21:49,834 INFO L413 NwaCegarLoop]: 146 mSDtfsCounter, 4311 mSDsluCounter, 2502 mSDsCounter, 0 mSdLazyCounter, 716 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4311 SdHoareTripleChecker+Valid, 2648 SdHoareTripleChecker+Invalid, 843 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 716 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-02 20:21:49,834 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4311 Valid, 2648 Invalid, 843 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 716 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-02 20:21:49,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20072 states. [2022-11-02 20:21:50,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20072 to 5192. [2022-11-02 20:21:50,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5192 states, 5191 states have (on average 1.374109034868041) internal successors, (7133), 5191 states have internal predecessors, (7133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:21:50,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5192 states to 5192 states and 7133 transitions. [2022-11-02 20:21:50,217 INFO L78 Accepts]: Start accepts. Automaton has 5192 states and 7133 transitions. Word has length 248 [2022-11-02 20:21:50,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:21:50,218 INFO L495 AbstractCegarLoop]: Abstraction has 5192 states and 7133 transitions. [2022-11-02 20:21:50,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 13.166666666666666) internal successors, (316), 24 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:21:50,218 INFO L276 IsEmpty]: Start isEmpty. Operand 5192 states and 7133 transitions. [2022-11-02 20:21:50,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2022-11-02 20:21:50,225 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:21:50,226 INFO L195 NwaCegarLoop]: trace histogram [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, 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] [2022-11-02 20:21:50,250 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (47)] Forceful destruction successful, exit code 0 [2022-11-02 20:21:50,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:21:50,445 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:21:50,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:21:50,446 INFO L85 PathProgramCache]: Analyzing trace with hash 1082114817, now seen corresponding path program 1 times [2022-11-02 20:21:50,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:21:50,447 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1770731286] [2022-11-02 20:21:50,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:21:50,447 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:21:50,447 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:21:50,448 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:21:50,450 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (48)] Waiting until timeout for monitored process [2022-11-02 20:21:50,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:21:50,813 INFO L263 TraceCheckSpWp]: Trace formula consists of 1135 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-02 20:21:50,816 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:21:50,914 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 191 trivial. 0 not checked. [2022-11-02 20:21:50,914 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:21:50,914 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:21:50,915 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1770731286] [2022-11-02 20:21:50,915 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1770731286] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:21:50,915 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:21:50,915 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:21:50,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227520453] [2022-11-02 20:21:50,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:21:50,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:21:50,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:21:50,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:21:50,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:21:50,916 INFO L87 Difference]: Start difference. First operand 5192 states and 7133 transitions. Second operand has 5 states, 5 states have (on average 28.4) internal successors, (142), 5 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:21:51,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:21:51,113 INFO L93 Difference]: Finished difference Result 10202 states and 14074 transitions. [2022-11-02 20:21:51,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:21:51,114 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 28.4) internal successors, (142), 5 states have internal predecessors, (142), 0 states have call successors, (0), 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 248 [2022-11-02 20:21:51,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:21:51,119 INFO L225 Difference]: With dead ends: 10202 [2022-11-02 20:21:51,120 INFO L226 Difference]: Without dead ends: 5152 [2022-11-02 20:21:51,124 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 244 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:21:51,125 INFO L413 NwaCegarLoop]: 139 mSDtfsCounter, 240 mSDsluCounter, 343 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 240 SdHoareTripleChecker+Valid, 482 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:21:51,125 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [240 Valid, 482 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:21:51,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5152 states. [2022-11-02 20:21:51,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5152 to 5088. [2022-11-02 20:21:51,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5088 states, 5087 states have (on average 1.3797916257126008) internal successors, (7019), 5087 states have internal predecessors, (7019), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:21:51,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5088 states to 5088 states and 7019 transitions. [2022-11-02 20:21:51,388 INFO L78 Accepts]: Start accepts. Automaton has 5088 states and 7019 transitions. Word has length 248 [2022-11-02 20:21:51,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:21:51,388 INFO L495 AbstractCegarLoop]: Abstraction has 5088 states and 7019 transitions. [2022-11-02 20:21:51,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.4) internal successors, (142), 5 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:21:51,389 INFO L276 IsEmpty]: Start isEmpty. Operand 5088 states and 7019 transitions. [2022-11-02 20:21:51,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 330 [2022-11-02 20:21:51,396 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:21:51,397 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:21:51,421 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (48)] Forceful destruction successful, exit code 0 [2022-11-02 20:21:51,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:21:51,616 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:21:51,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:21:51,617 INFO L85 PathProgramCache]: Analyzing trace with hash 481997399, now seen corresponding path program 3 times [2022-11-02 20:21:51,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:21:51,618 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [774169222] [2022-11-02 20:21:51,618 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-02 20:21:51,618 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:21:51,618 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:21:51,621 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:21:51,661 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (49)] Waiting until timeout for monitored process [2022-11-02 20:21:51,902 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-02 20:21:51,902 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:21:51,911 INFO L263 TraceCheckSpWp]: Trace formula consists of 443 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-02 20:21:51,915 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:21:52,348 INFO L134 CoverageAnalysis]: Checked inductivity of 494 backedges. 161 proven. 15 refuted. 0 times theorem prover too weak. 318 trivial. 0 not checked. [2022-11-02 20:21:52,348 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:21:52,898 INFO L134 CoverageAnalysis]: Checked inductivity of 494 backedges. 161 proven. 15 refuted. 0 times theorem prover too weak. 318 trivial. 0 not checked. [2022-11-02 20:21:52,899 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:21:52,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [774169222] [2022-11-02 20:21:52,899 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [774169222] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:21:52,899 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:21:52,900 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2022-11-02 20:21:52,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348378955] [2022-11-02 20:21:52,900 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:21:52,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-02 20:21:52,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:21:52,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-02 20:21:52,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:21:52,902 INFO L87 Difference]: Start difference. First operand 5088 states and 7019 transitions. Second operand has 9 states, 9 states have (on average 19.444444444444443) internal successors, (175), 9 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:21:53,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:21:53,637 INFO L93 Difference]: Finished difference Result 13072 states and 18169 transitions. [2022-11-02 20:21:53,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-02 20:21:53,638 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 19.444444444444443) internal successors, (175), 9 states have internal predecessors, (175), 0 states have call successors, (0), 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 329 [2022-11-02 20:21:53,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:21:53,645 INFO L225 Difference]: With dead ends: 13072 [2022-11-02 20:21:53,645 INFO L226 Difference]: Without dead ends: 8126 [2022-11-02 20:21:53,651 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 665 GetRequests, 647 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=100, Invalid=206, Unknown=0, NotChecked=0, Total=306 [2022-11-02 20:21:53,651 INFO L413 NwaCegarLoop]: 132 mSDtfsCounter, 966 mSDsluCounter, 372 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 966 SdHoareTripleChecker+Valid, 504 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:21:53,652 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [966 Valid, 504 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:21:53,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8126 states. [2022-11-02 20:21:53,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8126 to 5112. [2022-11-02 20:21:53,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5112 states, 5111 states have (on average 1.3733124633144198) internal successors, (7019), 5111 states have internal predecessors, (7019), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:21:53,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5112 states to 5112 states and 7019 transitions. [2022-11-02 20:21:53,908 INFO L78 Accepts]: Start accepts. Automaton has 5112 states and 7019 transitions. Word has length 329 [2022-11-02 20:21:53,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:21:53,908 INFO L495 AbstractCegarLoop]: Abstraction has 5112 states and 7019 transitions. [2022-11-02 20:21:53,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 19.444444444444443) internal successors, (175), 9 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:21:53,909 INFO L276 IsEmpty]: Start isEmpty. Operand 5112 states and 7019 transitions. [2022-11-02 20:21:53,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 330 [2022-11-02 20:21:53,917 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:21:53,917 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 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] [2022-11-02 20:21:53,936 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (49)] Forceful destruction successful, exit code 0 [2022-11-02 20:21:54,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:21:54,131 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:21:54,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:21:54,132 INFO L85 PathProgramCache]: Analyzing trace with hash 1868782809, now seen corresponding path program 3 times [2022-11-02 20:21:54,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:21:54,133 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [80419536] [2022-11-02 20:21:54,133 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-02 20:21:54,133 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:21:54,133 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:21:54,134 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:21:54,135 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (50)] Waiting until timeout for monitored process [2022-11-02 20:21:54,422 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-02 20:21:54,422 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:21:54,434 INFO L263 TraceCheckSpWp]: Trace formula consists of 443 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-02 20:21:54,439 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:21:54,951 INFO L134 CoverageAnalysis]: Checked inductivity of 494 backedges. 143 proven. 33 refuted. 0 times theorem prover too weak. 318 trivial. 0 not checked. [2022-11-02 20:21:54,951 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:21:55,409 INFO L134 CoverageAnalysis]: Checked inductivity of 494 backedges. 143 proven. 33 refuted. 0 times theorem prover too weak. 318 trivial. 0 not checked. [2022-11-02 20:21:55,409 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:21:55,410 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [80419536] [2022-11-02 20:21:55,410 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [80419536] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:21:55,410 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:21:55,410 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2022-11-02 20:21:55,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669337151] [2022-11-02 20:21:55,410 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:21:55,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-02 20:21:55,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:21:55,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-02 20:21:55,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:21:55,412 INFO L87 Difference]: Start difference. First operand 5112 states and 7019 transitions. Second operand has 9 states, 9 states have (on average 19.444444444444443) internal successors, (175), 9 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:21:55,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:21:55,973 INFO L93 Difference]: Finished difference Result 10820 states and 15053 transitions. [2022-11-02 20:21:55,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-02 20:21:55,974 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 19.444444444444443) internal successors, (175), 9 states have internal predecessors, (175), 0 states have call successors, (0), 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 329 [2022-11-02 20:21:55,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:21:55,979 INFO L225 Difference]: With dead ends: 10820 [2022-11-02 20:21:55,979 INFO L226 Difference]: Without dead ends: 7506 [2022-11-02 20:21:55,982 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 665 GetRequests, 647 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=100, Invalid=206, Unknown=0, NotChecked=0, Total=306 [2022-11-02 20:21:55,983 INFO L413 NwaCegarLoop]: 136 mSDtfsCounter, 1141 mSDsluCounter, 333 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1141 SdHoareTripleChecker+Valid, 469 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:21:55,983 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1141 Valid, 469 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:21:55,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7506 states. [2022-11-02 20:21:56,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7506 to 5112. [2022-11-02 20:21:56,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5112 states, 5111 states have (on average 1.3733124633144198) internal successors, (7019), 5111 states have internal predecessors, (7019), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:21:56,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5112 states to 5112 states and 7019 transitions. [2022-11-02 20:21:56,244 INFO L78 Accepts]: Start accepts. Automaton has 5112 states and 7019 transitions. Word has length 329 [2022-11-02 20:21:56,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:21:56,245 INFO L495 AbstractCegarLoop]: Abstraction has 5112 states and 7019 transitions. [2022-11-02 20:21:56,245 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 19.444444444444443) internal successors, (175), 9 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:21:56,245 INFO L276 IsEmpty]: Start isEmpty. Operand 5112 states and 7019 transitions. [2022-11-02 20:21:56,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 330 [2022-11-02 20:21:56,253 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:21:56,254 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 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] [2022-11-02 20:21:56,278 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (50)] Forceful destruction successful, exit code 0 [2022-11-02 20:21:56,470 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:21:56,470 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:21:56,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:21:56,471 INFO L85 PathProgramCache]: Analyzing trace with hash 1853264091, now seen corresponding path program 1 times [2022-11-02 20:21:56,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:21:56,472 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [524431440] [2022-11-02 20:21:56,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:21:56,473 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:21:56,473 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:21:56,473 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:21:56,475 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (51)] Waiting until timeout for monitored process [2022-11-02 20:21:56,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:21:56,937 INFO L263 TraceCheckSpWp]: Trace formula consists of 1481 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-02 20:21:56,942 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:21:57,767 INFO L134 CoverageAnalysis]: Checked inductivity of 494 backedges. 287 proven. 3 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2022-11-02 20:21:57,767 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:21:58,186 INFO L134 CoverageAnalysis]: Checked inductivity of 494 backedges. 287 proven. 3 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2022-11-02 20:21:58,187 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:21:58,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [524431440] [2022-11-02 20:21:58,187 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [524431440] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:21:58,187 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:21:58,187 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2022-11-02 20:21:58,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375441310] [2022-11-02 20:21:58,188 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:21:58,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-02 20:21:58,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:21:58,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-02 20:21:58,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2022-11-02 20:21:58,190 INFO L87 Difference]: Start difference. First operand 5112 states and 7019 transitions. Second operand has 12 states, 12 states have (on average 21.583333333333332) internal successors, (259), 12 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:21:58,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:21:58,977 INFO L93 Difference]: Finished difference Result 26192 states and 36207 transitions. [2022-11-02 20:21:58,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-02 20:21:58,978 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 21.583333333333332) internal successors, (259), 12 states have internal predecessors, (259), 0 states have call successors, (0), 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 329 [2022-11-02 20:21:58,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:21:58,991 INFO L225 Difference]: With dead ends: 26192 [2022-11-02 20:21:58,991 INFO L226 Difference]: Without dead ends: 21222 [2022-11-02 20:21:58,997 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 664 GetRequests, 645 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=110, Invalid=270, Unknown=0, NotChecked=0, Total=380 [2022-11-02 20:21:58,997 INFO L413 NwaCegarLoop]: 211 mSDtfsCounter, 1208 mSDsluCounter, 1373 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1208 SdHoareTripleChecker+Valid, 1584 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:21:58,997 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1208 Valid, 1584 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:21:59,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21222 states. [2022-11-02 20:21:59,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21222 to 10080. [2022-11-02 20:21:59,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10080 states, 10079 states have (on average 1.37265601746205) internal successors, (13835), 10079 states have internal predecessors, (13835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:21:59,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10080 states to 10080 states and 13835 transitions. [2022-11-02 20:21:59,596 INFO L78 Accepts]: Start accepts. Automaton has 10080 states and 13835 transitions. Word has length 329 [2022-11-02 20:21:59,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:21:59,596 INFO L495 AbstractCegarLoop]: Abstraction has 10080 states and 13835 transitions. [2022-11-02 20:21:59,596 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 21.583333333333332) internal successors, (259), 12 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:21:59,597 INFO L276 IsEmpty]: Start isEmpty. Operand 10080 states and 13835 transitions. [2022-11-02 20:21:59,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 330 [2022-11-02 20:21:59,612 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:21:59,612 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 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] [2022-11-02 20:21:59,632 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (51)] Ended with exit code 0 [2022-11-02 20:21:59,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:21:59,826 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:21:59,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:21:59,827 INFO L85 PathProgramCache]: Analyzing trace with hash 1132344669, now seen corresponding path program 2 times [2022-11-02 20:21:59,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:21:59,827 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1807352720] [2022-11-02 20:21:59,828 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 20:21:59,828 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:21:59,828 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:21:59,829 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:21:59,830 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (52)] Waiting until timeout for monitored process [2022-11-02 20:22:00,280 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-02 20:22:00,281 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:22:00,310 INFO L263 TraceCheckSpWp]: Trace formula consists of 1481 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-02 20:22:00,316 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:22:00,699 INFO L134 CoverageAnalysis]: Checked inductivity of 494 backedges. 289 proven. 42 refuted. 0 times theorem prover too weak. 163 trivial. 0 not checked. [2022-11-02 20:22:00,699 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:22:01,016 INFO L134 CoverageAnalysis]: Checked inductivity of 494 backedges. 330 proven. 1 refuted. 0 times theorem prover too weak. 163 trivial. 0 not checked. [2022-11-02 20:22:01,017 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:22:01,017 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1807352720] [2022-11-02 20:22:01,017 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1807352720] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:22:01,017 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:22:01,017 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 17 [2022-11-02 20:22:01,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45404097] [2022-11-02 20:22:01,018 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:22:01,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-02 20:22:01,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:22:01,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-02 20:22:01,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2022-11-02 20:22:01,019 INFO L87 Difference]: Start difference. First operand 10080 states and 13835 transitions. Second operand has 17 states, 17 states have (on average 16.11764705882353) internal successors, (274), 17 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:22:03,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:22:03,391 INFO L93 Difference]: Finished difference Result 62170 states and 85600 transitions. [2022-11-02 20:22:03,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-02 20:22:03,391 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 16.11764705882353) internal successors, (274), 17 states have internal predecessors, (274), 0 states have call successors, (0), 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 329 [2022-11-02 20:22:03,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:22:03,431 INFO L225 Difference]: With dead ends: 62170 [2022-11-02 20:22:03,431 INFO L226 Difference]: Without dead ends: 52232 [2022-11-02 20:22:03,438 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 673 GetRequests, 641 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=285, Invalid=837, Unknown=0, NotChecked=0, Total=1122 [2022-11-02 20:22:03,439 INFO L413 NwaCegarLoop]: 216 mSDtfsCounter, 1140 mSDsluCounter, 2721 mSDsCounter, 0 mSdLazyCounter, 583 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1140 SdHoareTripleChecker+Valid, 2937 SdHoareTripleChecker+Invalid, 619 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 583 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-02 20:22:03,439 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1140 Valid, 2937 Invalid, 619 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 583 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-02 20:22:03,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52232 states. [2022-11-02 20:22:04,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52232 to 20016. [2022-11-02 20:22:04,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20016 states, 20015 states have (on average 1.369922558081439) internal successors, (27419), 20015 states have internal predecessors, (27419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:22:04,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20016 states to 20016 states and 27419 transitions. [2022-11-02 20:22:04,549 INFO L78 Accepts]: Start accepts. Automaton has 20016 states and 27419 transitions. Word has length 329 [2022-11-02 20:22:04,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:22:04,549 INFO L495 AbstractCegarLoop]: Abstraction has 20016 states and 27419 transitions. [2022-11-02 20:22:04,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 16.11764705882353) internal successors, (274), 17 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:22:04,550 INFO L276 IsEmpty]: Start isEmpty. Operand 20016 states and 27419 transitions. [2022-11-02 20:22:04,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 330 [2022-11-02 20:22:04,570 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:22:04,571 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 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] [2022-11-02 20:22:04,589 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (52)] Forceful destruction successful, exit code 0 [2022-11-02 20:22:04,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:22:04,780 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:22:04,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:22:04,780 INFO L85 PathProgramCache]: Analyzing trace with hash -3599777, now seen corresponding path program 3 times [2022-11-02 20:22:04,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:22:04,781 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1047657966] [2022-11-02 20:22:04,781 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-02 20:22:04,781 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:22:04,781 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:22:04,782 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:22:04,783 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (53)] Waiting until timeout for monitored process [2022-11-02 20:22:05,029 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-02 20:22:05,029 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:22:05,037 INFO L263 TraceCheckSpWp]: Trace formula consists of 443 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-02 20:22:05,040 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:22:05,473 INFO L134 CoverageAnalysis]: Checked inductivity of 494 backedges. 101 proven. 75 refuted. 0 times theorem prover too weak. 318 trivial. 0 not checked. [2022-11-02 20:22:05,473 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:22:05,949 INFO L134 CoverageAnalysis]: Checked inductivity of 494 backedges. 101 proven. 75 refuted. 0 times theorem prover too weak. 318 trivial. 0 not checked. [2022-11-02 20:22:05,949 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:22:05,949 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1047657966] [2022-11-02 20:22:05,949 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1047657966] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:22:05,949 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:22:05,950 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2022-11-02 20:22:05,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494213453] [2022-11-02 20:22:05,950 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:22:05,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-02 20:22:05,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:22:05,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-02 20:22:05,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:22:05,951 INFO L87 Difference]: Start difference. First operand 20016 states and 27419 transitions. Second operand has 9 states, 9 states have (on average 19.444444444444443) internal successors, (175), 9 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:22:07,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:22:07,210 INFO L93 Difference]: Finished difference Result 54532 states and 74941 transitions. [2022-11-02 20:22:07,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-02 20:22:07,210 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 19.444444444444443) internal successors, (175), 9 states have internal predecessors, (175), 0 states have call successors, (0), 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 329 [2022-11-02 20:22:07,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:22:07,238 INFO L225 Difference]: With dead ends: 54532 [2022-11-02 20:22:07,239 INFO L226 Difference]: Without dead ends: 34658 [2022-11-02 20:22:07,247 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 665 GetRequests, 647 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=100, Invalid=206, Unknown=0, NotChecked=0, Total=306 [2022-11-02 20:22:07,247 INFO L413 NwaCegarLoop]: 152 mSDtfsCounter, 834 mSDsluCounter, 414 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 834 SdHoareTripleChecker+Valid, 566 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:22:07,248 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [834 Valid, 566 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:22:07,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34658 states. [2022-11-02 20:22:08,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34658 to 21072. [2022-11-02 20:22:08,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21072 states, 21071 states have (on average 1.3604954677044279) internal successors, (28667), 21071 states have internal predecessors, (28667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:22:08,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21072 states to 21072 states and 28667 transitions. [2022-11-02 20:22:08,506 INFO L78 Accepts]: Start accepts. Automaton has 21072 states and 28667 transitions. Word has length 329 [2022-11-02 20:22:08,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:22:08,506 INFO L495 AbstractCegarLoop]: Abstraction has 21072 states and 28667 transitions. [2022-11-02 20:22:08,507 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 19.444444444444443) internal successors, (175), 9 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:22:08,507 INFO L276 IsEmpty]: Start isEmpty. Operand 21072 states and 28667 transitions. [2022-11-02 20:22:08,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 330 [2022-11-02 20:22:08,535 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:22:08,536 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 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] [2022-11-02 20:22:08,552 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (53)] Forceful destruction successful, exit code 0 [2022-11-02 20:22:08,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:22:08,751 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:22:08,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:22:08,752 INFO L85 PathProgramCache]: Analyzing trace with hash 1389876641, now seen corresponding path program 1 times [2022-11-02 20:22:08,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:22:08,753 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [444508960] [2022-11-02 20:22:08,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:22:08,753 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:22:08,753 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:22:08,754 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:22:08,756 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (54)] Waiting until timeout for monitored process [2022-11-02 20:22:09,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:22:09,219 INFO L263 TraceCheckSpWp]: Trace formula consists of 1481 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-02 20:22:09,223 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:22:10,024 INFO L134 CoverageAnalysis]: Checked inductivity of 494 backedges. 291 proven. 7 refuted. 0 times theorem prover too weak. 196 trivial. 0 not checked. [2022-11-02 20:22:10,024 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:22:10,480 INFO L134 CoverageAnalysis]: Checked inductivity of 494 backedges. 291 proven. 7 refuted. 0 times theorem prover too weak. 196 trivial. 0 not checked. [2022-11-02 20:22:10,481 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:22:10,481 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [444508960] [2022-11-02 20:22:10,481 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [444508960] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:22:10,481 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:22:10,481 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2022-11-02 20:22:10,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492832998] [2022-11-02 20:22:10,482 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:22:10,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-02 20:22:10,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:22:10,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-02 20:22:10,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2022-11-02 20:22:10,483 INFO L87 Difference]: Start difference. First operand 21072 states and 28667 transitions. Second operand has 12 states, 12 states have (on average 21.916666666666668) internal successors, (263), 12 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:22:12,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:22:12,333 INFO L93 Difference]: Finished difference Result 65072 states and 88791 transitions. [2022-11-02 20:22:12,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-02 20:22:12,334 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 21.916666666666668) internal successors, (263), 12 states have internal predecessors, (263), 0 states have call successors, (0), 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 329 [2022-11-02 20:22:12,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:22:12,363 INFO L225 Difference]: With dead ends: 65072 [2022-11-02 20:22:12,363 INFO L226 Difference]: Without dead ends: 44142 [2022-11-02 20:22:12,376 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 664 GetRequests, 645 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=110, Invalid=270, Unknown=0, NotChecked=0, Total=380 [2022-11-02 20:22:12,377 INFO L413 NwaCegarLoop]: 212 mSDtfsCounter, 1194 mSDsluCounter, 1354 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1194 SdHoareTripleChecker+Valid, 1566 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:22:12,377 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1194 Valid, 1566 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:22:12,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44142 states. [2022-11-02 20:22:13,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44142 to 21072. [2022-11-02 20:22:13,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21072 states, 21071 states have (on average 1.3548004366190498) internal successors, (28547), 21071 states have internal predecessors, (28547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:22:13,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21072 states to 21072 states and 28547 transitions. [2022-11-02 20:22:13,447 INFO L78 Accepts]: Start accepts. Automaton has 21072 states and 28547 transitions. Word has length 329 [2022-11-02 20:22:13,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:22:13,447 INFO L495 AbstractCegarLoop]: Abstraction has 21072 states and 28547 transitions. [2022-11-02 20:22:13,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 21.916666666666668) internal successors, (263), 12 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:22:13,448 INFO L276 IsEmpty]: Start isEmpty. Operand 21072 states and 28547 transitions. [2022-11-02 20:22:13,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 330 [2022-11-02 20:22:13,474 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:22:13,474 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 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] [2022-11-02 20:22:13,496 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (54)] Ended with exit code 0 [2022-11-02 20:22:13,696 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:22:13,696 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:22:13,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:22:13,697 INFO L85 PathProgramCache]: Analyzing trace with hash 114952995, now seen corresponding path program 2 times [2022-11-02 20:22:13,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:22:13,698 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1905519417] [2022-11-02 20:22:13,698 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 20:22:13,698 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:22:13,698 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:22:13,699 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:22:13,700 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (55)] Waiting until timeout for monitored process [2022-11-02 20:22:14,150 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-02 20:22:14,151 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:22:14,177 INFO L263 TraceCheckSpWp]: Trace formula consists of 1481 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-02 20:22:14,183 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:22:14,621 INFO L134 CoverageAnalysis]: Checked inductivity of 494 backedges. 293 proven. 46 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2022-11-02 20:22:14,622 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:22:15,078 INFO L134 CoverageAnalysis]: Checked inductivity of 494 backedges. 338 proven. 1 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2022-11-02 20:22:15,078 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:22:15,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1905519417] [2022-11-02 20:22:15,078 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1905519417] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:22:15,079 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:22:15,079 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 17 [2022-11-02 20:22:15,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874928128] [2022-11-02 20:22:15,079 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:22:15,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-02 20:22:15,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:22:15,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-02 20:22:15,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2022-11-02 20:22:15,081 INFO L87 Difference]: Start difference. First operand 21072 states and 28547 transitions. Second operand has 17 states, 17 states have (on average 16.352941176470587) internal successors, (278), 17 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:22:17,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:22:17,892 INFO L93 Difference]: Finished difference Result 75202 states and 102016 transitions. [2022-11-02 20:22:17,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-02 20:22:17,893 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 16.352941176470587) internal successors, (278), 17 states have internal predecessors, (278), 0 states have call successors, (0), 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 329 [2022-11-02 20:22:17,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:22:17,933 INFO L225 Difference]: With dead ends: 75202 [2022-11-02 20:22:17,933 INFO L226 Difference]: Without dead ends: 54272 [2022-11-02 20:22:17,945 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 673 GetRequests, 641 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=285, Invalid=837, Unknown=0, NotChecked=0, Total=1122 [2022-11-02 20:22:17,946 INFO L413 NwaCegarLoop]: 219 mSDtfsCounter, 1218 mSDsluCounter, 2643 mSDsCounter, 0 mSdLazyCounter, 579 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1218 SdHoareTripleChecker+Valid, 2862 SdHoareTripleChecker+Invalid, 619 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 579 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-02 20:22:17,946 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1218 Valid, 2862 Invalid, 619 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 579 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-02 20:22:17,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54272 states. [2022-11-02 20:22:18,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54272 to 21072. [2022-11-02 20:22:18,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21072 states, 21071 states have (on average 1.349105405533672) internal successors, (28427), 21071 states have internal predecessors, (28427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:22:18,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21072 states to 21072 states and 28427 transitions. [2022-11-02 20:22:18,957 INFO L78 Accepts]: Start accepts. Automaton has 21072 states and 28427 transitions. Word has length 329 [2022-11-02 20:22:18,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:22:18,957 INFO L495 AbstractCegarLoop]: Abstraction has 21072 states and 28427 transitions. [2022-11-02 20:22:18,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 16.352941176470587) internal successors, (278), 17 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:22:18,957 INFO L276 IsEmpty]: Start isEmpty. Operand 21072 states and 28427 transitions. [2022-11-02 20:22:18,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 330 [2022-11-02 20:22:18,987 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:22:18,987 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 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] [2022-11-02 20:22:19,017 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (55)] Forceful destruction successful, exit code 0 [2022-11-02 20:22:19,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:22:19,201 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:22:19,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:22:19,201 INFO L85 PathProgramCache]: Analyzing trace with hash -1852851931, now seen corresponding path program 3 times [2022-11-02 20:22:19,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:22:19,203 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1061329686] [2022-11-02 20:22:19,203 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-02 20:22:19,203 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:22:19,203 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:22:19,204 INFO L229 MonitoredProcess]: Starting monitored process 56 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:22:19,213 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (56)] Waiting until timeout for monitored process [2022-11-02 20:22:19,523 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-02 20:22:19,523 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:22:19,531 INFO L263 TraceCheckSpWp]: Trace formula consists of 443 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-02 20:22:19,534 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:22:19,592 INFO L134 CoverageAnalysis]: Checked inductivity of 494 backedges. 200 proven. 0 refuted. 0 times theorem prover too weak. 294 trivial. 0 not checked. [2022-11-02 20:22:19,592 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:22:19,592 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:22:19,592 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1061329686] [2022-11-02 20:22:19,593 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1061329686] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:22:19,593 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:22:19,593 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:22:19,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595529130] [2022-11-02 20:22:19,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:22:19,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:22:19,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:22:19,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:22:19,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:22:19,595 INFO L87 Difference]: Start difference. First operand 21072 states and 28427 transitions. Second operand has 5 states, 5 states have (on average 35.6) internal successors, (178), 5 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:22:21,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:22:21,657 INFO L93 Difference]: Finished difference Result 88716 states and 119305 transitions. [2022-11-02 20:22:21,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:22:21,658 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.6) internal successors, (178), 5 states have internal predecessors, (178), 0 states have call successors, (0), 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 329 [2022-11-02 20:22:21,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:22:21,719 INFO L225 Difference]: With dead ends: 88716 [2022-11-02 20:22:21,719 INFO L226 Difference]: Without dead ends: 67786 [2022-11-02 20:22:21,750 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 334 GetRequests, 328 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:22:21,751 INFO L413 NwaCegarLoop]: 275 mSDtfsCounter, 380 mSDsluCounter, 412 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 380 SdHoareTripleChecker+Valid, 687 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:22:21,751 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [380 Valid, 687 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:22:21,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67786 states. [2022-11-02 20:22:23,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67786 to 31248. [2022-11-02 20:22:23,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31248 states, 31247 states have (on average 1.329119595481166) internal successors, (41531), 31247 states have internal predecessors, (41531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:22:23,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31248 states to 31248 states and 41531 transitions. [2022-11-02 20:22:23,223 INFO L78 Accepts]: Start accepts. Automaton has 31248 states and 41531 transitions. Word has length 329 [2022-11-02 20:22:23,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:22:23,224 INFO L495 AbstractCegarLoop]: Abstraction has 31248 states and 41531 transitions. [2022-11-02 20:22:23,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.6) internal successors, (178), 5 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:22:23,224 INFO L276 IsEmpty]: Start isEmpty. Operand 31248 states and 41531 transitions. [2022-11-02 20:22:23,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 330 [2022-11-02 20:22:23,252 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:22:23,253 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 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] [2022-11-02 20:22:23,263 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (56)] Ended with exit code 0 [2022-11-02 20:22:23,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 56 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:22:23,453 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:22:23,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:22:23,454 INFO L85 PathProgramCache]: Analyzing trace with hash -1501229725, now seen corresponding path program 1 times [2022-11-02 20:22:23,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:22:23,455 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1441426769] [2022-11-02 20:22:23,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:22:23,455 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:22:23,455 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:22:23,456 INFO L229 MonitoredProcess]: Starting monitored process 57 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:22:23,457 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (57)] Waiting until timeout for monitored process [2022-11-02 20:22:23,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:22:23,956 INFO L263 TraceCheckSpWp]: Trace formula consists of 1481 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-02 20:22:23,960 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:22:24,357 INFO L134 CoverageAnalysis]: Checked inductivity of 494 backedges. 295 proven. 48 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2022-11-02 20:22:24,357 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:22:24,704 INFO L134 CoverageAnalysis]: Checked inductivity of 494 backedges. 342 proven. 1 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2022-11-02 20:22:24,705 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:22:24,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1441426769] [2022-11-02 20:22:24,705 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1441426769] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:22:24,705 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:22:24,705 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 17 [2022-11-02 20:22:24,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771292691] [2022-11-02 20:22:24,705 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:22:24,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-02 20:22:24,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:22:24,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-02 20:22:24,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2022-11-02 20:22:24,709 INFO L87 Difference]: Start difference. First operand 31248 states and 41531 transitions. Second operand has 17 states, 17 states have (on average 16.470588235294116) internal successors, (280), 17 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:22:27,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:22:27,910 INFO L93 Difference]: Finished difference Result 111082 states and 148000 transitions. [2022-11-02 20:22:27,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-02 20:22:27,911 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 16.470588235294116) internal successors, (280), 17 states have internal predecessors, (280), 0 states have call successors, (0), 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 329 [2022-11-02 20:22:27,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:22:27,966 INFO L225 Difference]: With dead ends: 111082 [2022-11-02 20:22:27,966 INFO L226 Difference]: Without dead ends: 79976 [2022-11-02 20:22:27,978 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 673 GetRequests, 641 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=285, Invalid=837, Unknown=0, NotChecked=0, Total=1122 [2022-11-02 20:22:27,979 INFO L413 NwaCegarLoop]: 220 mSDtfsCounter, 1521 mSDsluCounter, 2321 mSDsCounter, 0 mSdLazyCounter, 499 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1521 SdHoareTripleChecker+Valid, 2541 SdHoareTripleChecker+Invalid, 549 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 499 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-02 20:22:27,979 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1521 Valid, 2541 Invalid, 549 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 499 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-02 20:22:28,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79976 states. [2022-11-02 20:22:29,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79976 to 31248. [2022-11-02 20:22:29,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31248 states, 31247 states have (on average 1.3214388581303804) internal successors, (41291), 31247 states have internal predecessors, (41291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:22:29,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31248 states to 31248 states and 41291 transitions. [2022-11-02 20:22:29,421 INFO L78 Accepts]: Start accepts. Automaton has 31248 states and 41291 transitions. Word has length 329 [2022-11-02 20:22:29,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:22:29,422 INFO L495 AbstractCegarLoop]: Abstraction has 31248 states and 41291 transitions. [2022-11-02 20:22:29,422 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 16.470588235294116) internal successors, (280), 17 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:22:29,422 INFO L276 IsEmpty]: Start isEmpty. Operand 31248 states and 41291 transitions. [2022-11-02 20:22:29,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 330 [2022-11-02 20:22:29,464 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:22:29,464 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 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] [2022-11-02 20:22:29,481 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (57)] Forceful destruction successful, exit code 0 [2022-11-02 20:22:29,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 57 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:22:29,665 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:22:29,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:22:29,666 INFO L85 PathProgramCache]: Analyzing trace with hash -1217244187, now seen corresponding path program 2 times [2022-11-02 20:22:29,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:22:29,667 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1825899311] [2022-11-02 20:22:29,667 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 20:22:29,667 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:22:29,667 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:22:29,668 INFO L229 MonitoredProcess]: Starting monitored process 58 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:22:29,670 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c6a4500-efe9-41f5-bc0d-3bf6c78e723a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (58)] Waiting until timeout for monitored process [2022-11-02 20:22:30,299 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-02 20:22:30,299 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:22:30,326 INFO L263 TraceCheckSpWp]: Trace formula consists of 1481 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-02 20:22:30,330 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:22:30,712 INFO L134 CoverageAnalysis]: Checked inductivity of 494 backedges. 301 proven. 54 refuted. 0 times theorem prover too weak. 139 trivial. 0 not checked. [2022-11-02 20:22:30,712 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:22:30,994 INFO L134 CoverageAnalysis]: Checked inductivity of 494 backedges. 301 proven. 54 refuted. 0 times theorem prover too weak. 139 trivial. 0 not checked. [2022-11-02 20:22:30,995 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:22:30,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1825899311] [2022-11-02 20:22:30,995 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1825899311] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:22:30,995 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:22:30,996 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2022-11-02 20:22:30,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608353793] [2022-11-02 20:22:30,996 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:22:30,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 20:22:30,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:22:30,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 20:22:30,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:22:30,997 INFO L87 Difference]: Start difference. First operand 31248 states and 41291 transitions. Second operand has 10 states, 10 states have (on average 30.6) internal successors, (306), 10 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:22:32,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:22:32,699 INFO L93 Difference]: Finished difference Result 102680 states and 136623 transitions. [2022-11-02 20:22:32,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-02 20:22:32,699 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 30.6) internal successors, (306), 10 states have internal predecessors, (306), 0 states have call successors, (0), 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 329 [2022-11-02 20:22:32,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:22:32,747 INFO L225 Difference]: With dead ends: 102680 [2022-11-02 20:22:32,747 INFO L226 Difference]: Without dead ends: 87126 [2022-11-02 20:22:32,754 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 665 GetRequests, 648 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=235, Unknown=0, NotChecked=0, Total=342 [2022-11-02 20:22:32,755 INFO L413 NwaCegarLoop]: 198 mSDtfsCounter, 769 mSDsluCounter, 878 mSDsCounter, 0 mSdLazyCounter, 244 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 769 SdHoareTripleChecker+Valid, 1076 SdHoareTripleChecker+Invalid, 259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:22:32,755 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [769 Valid, 1076 Invalid, 259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 244 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 20:22:32,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87126 states.