./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded/rekh_nxt.3.M1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7e70badd Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1a3a62e-8d03-458c-8c91-7eca855efd00/bin/uautomizer-wIGwrQj20G/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1a3a62e-8d03-458c-8c91-7eca855efd00/bin/uautomizer-wIGwrQj20G/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1a3a62e-8d03-458c-8c91-7eca855efd00/bin/uautomizer-wIGwrQj20G/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1a3a62e-8d03-458c-8c91-7eca855efd00/bin/uautomizer-wIGwrQj20G/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded/rekh_nxt.3.M1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1a3a62e-8d03-458c-8c91-7eca855efd00/bin/uautomizer-wIGwrQj20G/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1a3a62e-8d03-458c-8c91-7eca855efd00/bin/uautomizer-wIGwrQj20G --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 491770f936b11f9c816b5badf382b4c7289d40b54afe46cb60faa6a0ff48de66 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-7e70bad [2021-11-23 13:45:14,265 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 13:45:14,267 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 13:45:14,313 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 13:45:14,314 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 13:45:14,316 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 13:45:14,318 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 13:45:14,321 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 13:45:14,325 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 13:45:14,326 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 13:45:14,328 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 13:45:14,331 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 13:45:14,331 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 13:45:14,333 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 13:45:14,336 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 13:45:14,339 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 13:45:14,340 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 13:45:14,343 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 13:45:14,346 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 13:45:14,350 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 13:45:14,353 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 13:45:14,356 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 13:45:14,358 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 13:45:14,360 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 13:45:14,366 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 13:45:14,367 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 13:45:14,367 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 13:45:14,369 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 13:45:14,370 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 13:45:14,372 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 13:45:14,373 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 13:45:14,375 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 13:45:14,376 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 13:45:14,378 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 13:45:14,380 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 13:45:14,384 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 13:45:14,385 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 13:45:14,386 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 13:45:14,386 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 13:45:14,388 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 13:45:14,389 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 13:45:14,392 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1a3a62e-8d03-458c-8c91-7eca855efd00/bin/uautomizer-wIGwrQj20G/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-23 13:45:14,452 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 13:45:14,453 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 13:45:14,453 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 13:45:14,453 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 13:45:14,455 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-23 13:45:14,455 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-23 13:45:14,455 INFO L138 SettingsManager]: * Use SBE=true [2021-11-23 13:45:14,456 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 13:45:14,456 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 13:45:14,456 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 13:45:14,457 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 13:45:14,457 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 13:45:14,457 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 13:45:14,458 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 13:45:14,458 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 13:45:14,458 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 13:45:14,459 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 13:45:14,459 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 13:45:14,459 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 13:45:14,460 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 13:45:14,460 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 13:45:14,460 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 13:45:14,461 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 13:45:14,461 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 13:45:14,462 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 13:45:14,462 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 13:45:14,462 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-23 13:45:14,463 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 13:45:14,463 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-23 13:45:14,463 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-23 13:45:14,464 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 13:45:14,464 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 13:45:14,464 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_b1a3a62e-8d03-458c-8c91-7eca855efd00/bin/uautomizer-wIGwrQj20G/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1a3a62e-8d03-458c-8c91-7eca855efd00/bin/uautomizer-wIGwrQj20G Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 491770f936b11f9c816b5badf382b4c7289d40b54afe46cb60faa6a0ff48de66 [2021-11-23 13:45:14,826 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 13:45:14,875 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 13:45:14,879 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 13:45:14,880 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 13:45:14,882 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 13:45:14,883 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1a3a62e-8d03-458c-8c91-7eca855efd00/bin/uautomizer-wIGwrQj20G/../../sv-benchmarks/c/seq-mthreaded/rekh_nxt.3.M1.c [2021-11-23 13:45:15,017 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1a3a62e-8d03-458c-8c91-7eca855efd00/bin/uautomizer-wIGwrQj20G/data/618d07acb/4c1648eb153844c5b9a2a1e980cf0433/FLAG64268eb5e [2021-11-23 13:45:15,877 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 13:45:15,880 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1a3a62e-8d03-458c-8c91-7eca855efd00/sv-benchmarks/c/seq-mthreaded/rekh_nxt.3.M1.c [2021-11-23 13:45:15,921 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1a3a62e-8d03-458c-8c91-7eca855efd00/bin/uautomizer-wIGwrQj20G/data/618d07acb/4c1648eb153844c5b9a2a1e980cf0433/FLAG64268eb5e [2021-11-23 13:45:15,963 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1a3a62e-8d03-458c-8c91-7eca855efd00/bin/uautomizer-wIGwrQj20G/data/618d07acb/4c1648eb153844c5b9a2a1e980cf0433 [2021-11-23 13:45:15,968 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 13:45:15,971 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 13:45:15,973 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 13:45:15,974 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 13:45:15,978 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 13:45:15,979 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:45:15" (1/1) ... [2021-11-23 13:45:15,982 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a5d8807 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:45:15, skipping insertion in model container [2021-11-23 13:45:15,983 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:45:15" (1/1) ... [2021-11-23 13:45:15,994 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 13:45:16,093 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 13:45:16,358 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_b1a3a62e-8d03-458c-8c91-7eca855efd00/sv-benchmarks/c/seq-mthreaded/rekh_nxt.3.M1.c[1762,1775] [2021-11-23 13:45:16,951 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 13:45:16,978 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 13:45:16,999 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_b1a3a62e-8d03-458c-8c91-7eca855efd00/sv-benchmarks/c/seq-mthreaded/rekh_nxt.3.M1.c[1762,1775] [2021-11-23 13:45:17,367 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 13:45:17,397 INFO L208 MainTranslator]: Completed translation [2021-11-23 13:45:17,397 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:45:17 WrapperNode [2021-11-23 13:45:17,398 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 13:45:17,399 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 13:45:17,399 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 13:45:17,400 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 13:45:17,410 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:45:17" (1/1) ... [2021-11-23 13:45:17,498 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:45:17" (1/1) ... [2021-11-23 13:45:22,127 INFO L137 Inliner]: procedures = 60, calls = 2524, calls flagged for inlining = 797, calls inlined = 10208, statements flattened = 106393 [2021-11-23 13:45:22,128 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 13:45:22,129 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 13:45:22,129 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 13:45:22,129 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 13:45:22,140 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:45:17" (1/1) ... [2021-11-23 13:45:22,140 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:45:17" (1/1) ... [2021-11-23 13:45:22,991 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:45:17" (1/1) ... [2021-11-23 13:45:22,992 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:45:17" (1/1) ... [2021-11-23 13:45:25,332 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:45:17" (1/1) ... [2021-11-23 13:45:26,466 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:45:17" (1/1) ... [2021-11-23 13:45:26,597 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:45:17" (1/1) ... [2021-11-23 13:45:27,163 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 13:45:27,164 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 13:45:27,165 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 13:45:27,165 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 13:45:27,167 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:45:17" (1/1) ... [2021-11-23 13:45:27,177 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 13:45:27,191 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1a3a62e-8d03-458c-8c91-7eca855efd00/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:45:27,206 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1a3a62e-8d03-458c-8c91-7eca855efd00/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 13:45:27,245 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1a3a62e-8d03-458c-8c91-7eca855efd00/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 13:45:27,273 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 13:45:27,274 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-23 13:45:27,274 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-23 13:45:27,274 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 13:45:27,275 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-23 13:45:27,275 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 13:45:27,275 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 13:45:27,275 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 13:45:28,019 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 13:45:28,023 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 13:48:39,471 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 13:48:39,651 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 13:48:39,652 INFO L301 CfgBuilder]: Removed 24 assume(true) statements. [2021-11-23 13:48:39,696 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:48:39 BoogieIcfgContainer [2021-11-23 13:48:39,696 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 13:48:39,699 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 13:48:39,699 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 13:48:39,704 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 13:48:39,705 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 01:45:15" (1/3) ... [2021-11-23 13:48:39,707 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3818ad01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:48:39, skipping insertion in model container [2021-11-23 13:48:39,707 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:45:17" (2/3) ... [2021-11-23 13:48:39,708 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3818ad01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:48:39, skipping insertion in model container [2021-11-23 13:48:39,708 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:48:39" (3/3) ... [2021-11-23 13:48:39,713 INFO L111 eAbstractionObserver]: Analyzing ICFG rekh_nxt.3.M1.c [2021-11-23 13:48:39,721 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 13:48:39,721 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 27 error locations. [2021-11-23 13:48:40,195 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 13:48:40,204 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-11-23 13:48:40,205 INFO L340 AbstractCegarLoop]: Starting to check reachability of 27 error locations. [2021-11-23 13:48:40,812 INFO L276 IsEmpty]: Start isEmpty. Operand has 37588 states, 37560 states have (on average 1.5100372736954206) internal successors, (56717), 37587 states have internal predecessors, (56717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:48:40,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 463 [2021-11-23 13:48:40,883 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:48:40,884 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:48:40,885 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 24 more)] === [2021-11-23 13:48:40,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:48:40,891 INFO L85 PathProgramCache]: Analyzing trace with hash 2105420716, now seen corresponding path program 1 times [2021-11-23 13:48:40,902 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:48:40,902 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598351453] [2021-11-23 13:48:40,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:48:40,905 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:48:41,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:48:41,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:48:41,702 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:48:41,703 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598351453] [2021-11-23 13:48:41,706 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1598351453] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:48:41,706 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:48:41,707 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 13:48:41,709 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929497901] [2021-11-23 13:48:41,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:48:41,726 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-23 13:48:41,726 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:48:41,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-23 13:48:41,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 13:48:41,858 INFO L87 Difference]: Start difference. First operand has 37588 states, 37560 states have (on average 1.5100372736954206) internal successors, (56717), 37587 states have internal predecessors, (56717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 231.0) internal successors, (462), 2 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:48:43,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:48:43,633 INFO L93 Difference]: Finished difference Result 75171 states and 113428 transitions. [2021-11-23 13:48:43,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-23 13:48:43,639 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 231.0) internal successors, (462), 2 states have internal predecessors, (462), 0 states have call successors, (0), 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 462 [2021-11-23 13:48:43,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:48:43,963 INFO L225 Difference]: With dead ends: 75171 [2021-11-23 13:48:43,964 INFO L226 Difference]: Without dead ends: 37582 [2021-11-23 13:48:44,063 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 13:48:44,070 INFO L933 BasicCegarLoop]: 47627 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 47627 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.6s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:48:44,075 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 47627 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 13:48:44,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37582 states. [2021-11-23 13:48:45,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37582 to 37582. [2021-11-23 13:48:45,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37582 states, 37555 states have (on average 1.2680335507921714) internal successors, (47621), 37581 states have internal predecessors, (47621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:48:45,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37582 states to 37582 states and 47621 transitions. [2021-11-23 13:48:45,510 INFO L78 Accepts]: Start accepts. Automaton has 37582 states and 47621 transitions. Word has length 462 [2021-11-23 13:48:45,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:48:45,514 INFO L470 AbstractCegarLoop]: Abstraction has 37582 states and 47621 transitions. [2021-11-23 13:48:45,515 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 231.0) internal successors, (462), 2 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:48:45,516 INFO L276 IsEmpty]: Start isEmpty. Operand 37582 states and 47621 transitions. [2021-11-23 13:48:45,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 463 [2021-11-23 13:48:45,531 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:48:45,531 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:48:45,532 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 13:48:45,532 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 24 more)] === [2021-11-23 13:48:45,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:48:45,534 INFO L85 PathProgramCache]: Analyzing trace with hash -1505919912, now seen corresponding path program 1 times [2021-11-23 13:48:45,535 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:48:45,535 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705260122] [2021-11-23 13:48:45,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:48:45,536 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:48:46,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:48:47,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:48:47,001 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:48:47,001 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705260122] [2021-11-23 13:48:47,002 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [705260122] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:48:47,002 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:48:47,003 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 13:48:47,003 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036140428] [2021-11-23 13:48:47,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:48:47,006 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 13:48:47,020 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:48:47,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 13:48:47,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:48:47,022 INFO L87 Difference]: Start difference. First operand 37582 states and 47621 transitions. Second operand has 3 states, 3 states have (on average 154.0) internal successors, (462), 3 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:48:48,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:48:48,725 INFO L93 Difference]: Finished difference Result 73295 states and 92975 transitions. [2021-11-23 13:48:48,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 13:48:48,726 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 154.0) internal successors, (462), 3 states have internal predecessors, (462), 0 states have call successors, (0), 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 462 [2021-11-23 13:48:48,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:48:48,838 INFO L225 Difference]: With dead ends: 73295 [2021-11-23 13:48:48,838 INFO L226 Difference]: Without dead ends: 37582 [2021-11-23 13:48:48,897 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:48:48,900 INFO L933 BasicCegarLoop]: 47573 mSDtfsCounter, 35616 mSDsluCounter, 11765 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35616 SdHoareTripleChecker+Valid, 59338 SdHoareTripleChecker+Invalid, 262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-23 13:48:48,901 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [35616 Valid, 59338 Invalid, 262 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [118 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-23 13:48:49,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37582 states. [2021-11-23 13:48:49,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37582 to 37582. [2021-11-23 13:48:49,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37582 states, 37555 states have (on average 1.2673944880841432) internal successors, (47597), 37581 states have internal predecessors, (47597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:48:50,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37582 states to 37582 states and 47597 transitions. [2021-11-23 13:48:50,075 INFO L78 Accepts]: Start accepts. Automaton has 37582 states and 47597 transitions. Word has length 462 [2021-11-23 13:48:50,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:48:50,081 INFO L470 AbstractCegarLoop]: Abstraction has 37582 states and 47597 transitions. [2021-11-23 13:48:50,081 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 154.0) internal successors, (462), 3 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:48:50,082 INFO L276 IsEmpty]: Start isEmpty. Operand 37582 states and 47597 transitions. [2021-11-23 13:48:50,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 464 [2021-11-23 13:48:50,099 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:48:50,100 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:48:50,101 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-23 13:48:50,101 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 24 more)] === [2021-11-23 13:48:50,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:48:50,105 INFO L85 PathProgramCache]: Analyzing trace with hash -540237387, now seen corresponding path program 1 times [2021-11-23 13:48:50,105 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:48:50,106 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612254926] [2021-11-23 13:48:50,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:48:50,116 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:48:50,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:48:50,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:48:50,821 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:48:50,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612254926] [2021-11-23 13:48:50,822 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [612254926] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:48:50,822 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:48:50,822 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 13:48:50,823 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90589532] [2021-11-23 13:48:50,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:48:50,824 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 13:48:50,825 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:48:50,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 13:48:50,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 13:48:50,826 INFO L87 Difference]: Start difference. First operand 37582 states and 47597 transitions. Second operand has 4 states, 4 states have (on average 115.75) internal successors, (463), 4 states have internal predecessors, (463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:48:55,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:48:55,097 INFO L93 Difference]: Finished difference Result 74359 states and 94282 transitions. [2021-11-23 13:48:55,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 13:48:55,100 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 115.75) internal successors, (463), 4 states have internal predecessors, (463), 0 states have call successors, (0), 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 463 [2021-11-23 13:48:55,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:48:55,206 INFO L225 Difference]: With dead ends: 74359 [2021-11-23 13:48:55,206 INFO L226 Difference]: Without dead ends: 37475 [2021-11-23 13:48:55,239 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 13:48:55,242 INFO L933 BasicCegarLoop]: 46929 mSDtfsCounter, 50891 mSDsluCounter, 43323 mSDsCounter, 0 mSdLazyCounter, 1055 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50891 SdHoareTripleChecker+Valid, 90252 SdHoareTripleChecker+Invalid, 1180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 1055 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2021-11-23 13:48:55,243 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [50891 Valid, 90252 Invalid, 1180 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [125 Valid, 1055 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2021-11-23 13:48:55,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37475 states. [2021-11-23 13:48:56,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37475 to 37473. [2021-11-23 13:48:56,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37473 states, 37446 states have (on average 1.2666773487154837) internal successors, (47432), 37472 states have internal predecessors, (47432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:48:56,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37473 states to 37473 states and 47432 transitions. [2021-11-23 13:48:56,459 INFO L78 Accepts]: Start accepts. Automaton has 37473 states and 47432 transitions. Word has length 463 [2021-11-23 13:48:56,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:48:56,460 INFO L470 AbstractCegarLoop]: Abstraction has 37473 states and 47432 transitions. [2021-11-23 13:48:56,461 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 115.75) internal successors, (463), 4 states have internal predecessors, (463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:48:56,461 INFO L276 IsEmpty]: Start isEmpty. Operand 37473 states and 47432 transitions. [2021-11-23 13:48:56,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 464 [2021-11-23 13:48:56,473 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:48:56,474 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:48:56,474 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-23 13:48:56,475 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 24 more)] === [2021-11-23 13:48:56,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:48:56,476 INFO L85 PathProgramCache]: Analyzing trace with hash 140245929, now seen corresponding path program 1 times [2021-11-23 13:48:56,476 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:48:56,477 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130383967] [2021-11-23 13:48:56,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:48:56,478 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:48:56,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:48:57,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:48:57,167 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:48:57,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130383967] [2021-11-23 13:48:57,168 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1130383967] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:48:57,168 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:48:57,169 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 13:48:57,169 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631209861] [2021-11-23 13:48:57,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:48:57,170 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 13:48:57,171 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:48:57,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 13:48:57,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:48:57,178 INFO L87 Difference]: Start difference. First operand 37473 states and 47432 transitions. Second operand has 3 states, 3 states have (on average 154.33333333333334) internal successors, (463), 3 states have internal predecessors, (463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:48:58,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:48:58,737 INFO L93 Difference]: Finished difference Result 71628 states and 90781 transitions. [2021-11-23 13:48:58,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 13:48:58,738 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 154.33333333333334) internal successors, (463), 3 states have internal predecessors, (463), 0 states have call successors, (0), 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 463 [2021-11-23 13:48:58,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:48:58,865 INFO L225 Difference]: With dead ends: 71628 [2021-11-23 13:48:58,866 INFO L226 Difference]: Without dead ends: 34739 [2021-11-23 13:48:58,922 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:48:58,937 INFO L933 BasicCegarLoop]: 43928 mSDtfsCounter, 0 mSDsluCounter, 43789 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 87717 SdHoareTripleChecker+Invalid, 209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-23 13:48:58,939 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 87717 Invalid, 209 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [48 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-23 13:48:59,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34739 states. [2021-11-23 13:48:59,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34739 to 34737. [2021-11-23 13:48:59,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34737 states, 34710 states have (on average 1.266263324690291) internal successors, (43952), 34736 states have internal predecessors, (43952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:48:59,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34737 states to 34737 states and 43952 transitions. [2021-11-23 13:48:59,671 INFO L78 Accepts]: Start accepts. Automaton has 34737 states and 43952 transitions. Word has length 463 [2021-11-23 13:48:59,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:48:59,672 INFO L470 AbstractCegarLoop]: Abstraction has 34737 states and 43952 transitions. [2021-11-23 13:48:59,674 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 154.33333333333334) internal successors, (463), 3 states have internal predecessors, (463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:48:59,674 INFO L276 IsEmpty]: Start isEmpty. Operand 34737 states and 43952 transitions. [2021-11-23 13:48:59,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 465 [2021-11-23 13:48:59,687 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:48:59,688 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:48:59,688 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-23 13:48:59,689 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 24 more)] === [2021-11-23 13:48:59,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:48:59,690 INFO L85 PathProgramCache]: Analyzing trace with hash 114758158, now seen corresponding path program 1 times [2021-11-23 13:48:59,690 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:48:59,690 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690607610] [2021-11-23 13:48:59,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:48:59,691 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:48:59,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:49:00,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:49:00,679 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:49:00,679 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690607610] [2021-11-23 13:49:00,680 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [690607610] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:49:00,680 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:49:00,680 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 13:49:00,681 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591394849] [2021-11-23 13:49:00,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:49:00,683 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 13:49:00,683 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:49:00,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 13:49:00,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 13:49:00,684 INFO L87 Difference]: Start difference. First operand 34737 states and 43952 transitions. Second operand has 4 states, 4 states have (on average 116.0) internal successors, (464), 4 states have internal predecessors, (464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:49:03,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:49:03,016 INFO L93 Difference]: Finished difference Result 75546 states and 95448 transitions. [2021-11-23 13:49:03,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 13:49:03,018 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 116.0) internal successors, (464), 4 states have internal predecessors, (464), 0 states have call successors, (0), 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 464 [2021-11-23 13:49:03,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:49:03,185 INFO L225 Difference]: With dead ends: 75546 [2021-11-23 13:49:03,186 INFO L226 Difference]: Without dead ends: 74041 [2021-11-23 13:49:03,208 INFO L932 BasicCegarLoop]: 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 [2021-11-23 13:49:03,209 INFO L933 BasicCegarLoop]: 43905 mSDtfsCounter, 120413 mSDsluCounter, 55417 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120413 SdHoareTripleChecker+Valid, 99322 SdHoareTripleChecker+Invalid, 308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-23 13:49:03,210 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [120413 Valid, 99322 Invalid, 308 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [133 Valid, 175 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-23 13:49:03,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74041 states. [2021-11-23 13:49:04,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74041 to 40457. [2021-11-23 13:49:04,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40457 states, 40430 states have (on average 1.2628246351719021) internal successors, (51056), 40456 states have internal predecessors, (51056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:49:04,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40457 states to 40457 states and 51056 transitions. [2021-11-23 13:49:04,585 INFO L78 Accepts]: Start accepts. Automaton has 40457 states and 51056 transitions. Word has length 464 [2021-11-23 13:49:04,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:49:04,591 INFO L470 AbstractCegarLoop]: Abstraction has 40457 states and 51056 transitions. [2021-11-23 13:49:04,591 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 116.0) internal successors, (464), 4 states have internal predecessors, (464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:49:04,591 INFO L276 IsEmpty]: Start isEmpty. Operand 40457 states and 51056 transitions. [2021-11-23 13:49:04,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 499 [2021-11-23 13:49:04,609 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:49:04,610 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:49:04,610 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-23 13:49:04,610 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 24 more)] === [2021-11-23 13:49:04,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:49:04,613 INFO L85 PathProgramCache]: Analyzing trace with hash 1095165083, now seen corresponding path program 1 times [2021-11-23 13:49:04,613 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:49:04,613 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669491557] [2021-11-23 13:49:04,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:49:04,614 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:49:04,856 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 13:49:04,857 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [985338417] [2021-11-23 13:49:04,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:49:04,857 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:49:04,858 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1a3a62e-8d03-458c-8c91-7eca855efd00/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:49:04,865 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1a3a62e-8d03-458c-8c91-7eca855efd00/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 13:49:04,896 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1a3a62e-8d03-458c-8c91-7eca855efd00/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-23 13:49:05,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:49:05,953 INFO L263 TraceCheckSpWp]: Trace formula consists of 2332 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-23 13:49:05,990 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:49:07,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:49:07,177 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 13:49:07,178 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:49:07,178 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669491557] [2021-11-23 13:49:07,178 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 13:49:07,178 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [985338417] [2021-11-23 13:49:07,179 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [985338417] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:49:07,179 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:49:07,179 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 13:49:07,179 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068151939] [2021-11-23 13:49:07,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:49:07,181 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 13:49:07,181 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:49:07,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 13:49:07,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 13:49:07,183 INFO L87 Difference]: Start difference. First operand 40457 states and 51056 transitions. Second operand has 5 states, 5 states have (on average 99.6) internal successors, (498), 5 states have internal predecessors, (498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:49:12,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:49:12,301 INFO L93 Difference]: Finished difference Result 71271 states and 90011 transitions. [2021-11-23 13:49:12,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 13:49:12,302 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 99.6) internal successors, (498), 5 states have internal predecessors, (498), 0 states have call successors, (0), 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 498 [2021-11-23 13:49:12,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:49:12,373 INFO L225 Difference]: With dead ends: 71271 [2021-11-23 13:49:12,373 INFO L226 Difference]: Without dead ends: 32208 [2021-11-23 13:49:12,414 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 499 GetRequests, 494 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-23 13:49:12,416 INFO L933 BasicCegarLoop]: 35598 mSDtfsCounter, 35333 mSDsluCounter, 71597 mSDsCounter, 0 mSdLazyCounter, 1687 mSolverCounterSat, 271 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35333 SdHoareTripleChecker+Valid, 107195 SdHoareTripleChecker+Invalid, 1958 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 271 IncrementalHoareTripleChecker+Valid, 1687 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2021-11-23 13:49:12,416 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [35333 Valid, 107195 Invalid, 1958 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [271 Valid, 1687 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2021-11-23 13:49:12,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32208 states. [2021-11-23 13:49:13,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32208 to 32135. [2021-11-23 13:49:13,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32135 states, 32108 states have (on average 1.260464681699265) internal successors, (40471), 32134 states have internal predecessors, (40471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:49:13,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32135 states to 32135 states and 40471 transitions. [2021-11-23 13:49:13,391 INFO L78 Accepts]: Start accepts. Automaton has 32135 states and 40471 transitions. Word has length 498 [2021-11-23 13:49:13,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:49:13,392 INFO L470 AbstractCegarLoop]: Abstraction has 32135 states and 40471 transitions. [2021-11-23 13:49:13,393 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 99.6) internal successors, (498), 5 states have internal predecessors, (498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:49:13,393 INFO L276 IsEmpty]: Start isEmpty. Operand 32135 states and 40471 transitions. [2021-11-23 13:49:13,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 499 [2021-11-23 13:49:13,402 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:49:13,402 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:49:13,457 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1a3a62e-8d03-458c-8c91-7eca855efd00/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-23 13:49:13,616 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1a3a62e-8d03-458c-8c91-7eca855efd00/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:49:13,617 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 24 more)] === [2021-11-23 13:49:13,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:49:13,618 INFO L85 PathProgramCache]: Analyzing trace with hash 1822769027, now seen corresponding path program 1 times [2021-11-23 13:49:13,618 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:49:13,618 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991242088] [2021-11-23 13:49:13,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:49:13,619 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:49:13,882 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 13:49:13,882 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [82877785] [2021-11-23 13:49:13,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:49:13,883 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:49:13,883 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1a3a62e-8d03-458c-8c91-7eca855efd00/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:49:13,884 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1a3a62e-8d03-458c-8c91-7eca855efd00/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 13:49:13,912 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1a3a62e-8d03-458c-8c91-7eca855efd00/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-23 13:49:14,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:49:14,848 INFO L263 TraceCheckSpWp]: Trace formula consists of 2326 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-23 13:49:14,860 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:49:15,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:49:15,850 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 13:49:15,851 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:49:15,851 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991242088] [2021-11-23 13:49:15,851 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 13:49:15,851 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [82877785] [2021-11-23 13:49:15,852 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [82877785] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:49:15,852 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:49:15,852 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 13:49:15,853 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750477942] [2021-11-23 13:49:15,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:49:15,854 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 13:49:15,854 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:49:15,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 13:49:15,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 13:49:15,856 INFO L87 Difference]: Start difference. First operand 32135 states and 40471 transitions. Second operand has 5 states, 5 states have (on average 99.6) internal successors, (498), 5 states have internal predecessors, (498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:49:20,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:49:20,151 INFO L93 Difference]: Finished difference Result 64104 states and 80820 transitions. [2021-11-23 13:49:20,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 13:49:20,160 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 99.6) internal successors, (498), 5 states have internal predecessors, (498), 0 states have call successors, (0), 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 498 [2021-11-23 13:49:20,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:49:20,492 INFO L225 Difference]: With dead ends: 64104 [2021-11-23 13:49:20,493 INFO L226 Difference]: Without dead ends: 33250 [2021-11-23 13:49:20,515 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 499 GetRequests, 494 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-23 13:49:20,518 INFO L933 BasicCegarLoop]: 36931 mSDtfsCounter, 43799 mSDsluCounter, 67327 mSDsCounter, 0 mSdLazyCounter, 1661 mSolverCounterSat, 169 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43799 SdHoareTripleChecker+Valid, 104258 SdHoareTripleChecker+Invalid, 1830 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 169 IncrementalHoareTripleChecker+Valid, 1661 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2021-11-23 13:49:20,519 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [43799 Valid, 104258 Invalid, 1830 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [169 Valid, 1661 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2021-11-23 13:49:20,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33250 states. [2021-11-23 13:49:21,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33250 to 32135. [2021-11-23 13:49:21,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32135 states, 32108 states have (on average 1.2597172044350318) internal successors, (40447), 32134 states have internal predecessors, (40447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:49:21,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32135 states to 32135 states and 40447 transitions. [2021-11-23 13:49:21,100 INFO L78 Accepts]: Start accepts. Automaton has 32135 states and 40447 transitions. Word has length 498 [2021-11-23 13:49:21,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:49:21,101 INFO L470 AbstractCegarLoop]: Abstraction has 32135 states and 40447 transitions. [2021-11-23 13:49:21,101 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 99.6) internal successors, (498), 5 states have internal predecessors, (498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:49:21,101 INFO L276 IsEmpty]: Start isEmpty. Operand 32135 states and 40447 transitions. [2021-11-23 13:49:21,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 499 [2021-11-23 13:49:21,112 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:49:21,113 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:49:21,159 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1a3a62e-8d03-458c-8c91-7eca855efd00/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-23 13:49:21,340 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1a3a62e-8d03-458c-8c91-7eca855efd00/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:49:21,341 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 24 more)] === [2021-11-23 13:49:21,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:49:21,341 INFO L85 PathProgramCache]: Analyzing trace with hash 67059727, now seen corresponding path program 1 times [2021-11-23 13:49:21,342 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:49:21,342 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553013658] [2021-11-23 13:49:21,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:49:21,342 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:49:21,562 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 13:49:21,563 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1579771743] [2021-11-23 13:49:21,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:49:21,563 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:49:21,564 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1a3a62e-8d03-458c-8c91-7eca855efd00/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:49:21,565 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1a3a62e-8d03-458c-8c91-7eca855efd00/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 13:49:21,584 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1a3a62e-8d03-458c-8c91-7eca855efd00/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-23 13:49:22,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:49:22,749 INFO L263 TraceCheckSpWp]: Trace formula consists of 2329 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-23 13:49:22,768 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:49:23,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:49:23,689 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 13:49:23,689 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:49:23,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553013658] [2021-11-23 13:49:23,689 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 13:49:23,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1579771743] [2021-11-23 13:49:23,690 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1579771743] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:49:23,690 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:49:23,690 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 13:49:23,691 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896127018] [2021-11-23 13:49:23,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:49:23,692 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 13:49:23,692 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:49:23,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 13:49:23,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 13:49:23,693 INFO L87 Difference]: Start difference. First operand 32135 states and 40447 transitions. Second operand has 5 states, 5 states have (on average 99.6) internal successors, (498), 5 states have internal predecessors, (498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:49:27,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:49:27,929 INFO L93 Difference]: Finished difference Result 60369 states and 76069 transitions. [2021-11-23 13:49:27,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 13:49:27,930 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 99.6) internal successors, (498), 5 states have internal predecessors, (498), 0 states have call successors, (0), 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 498 [2021-11-23 13:49:27,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:49:27,969 INFO L225 Difference]: With dead ends: 60369 [2021-11-23 13:49:27,970 INFO L226 Difference]: Without dead ends: 29401 [2021-11-23 13:49:27,985 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 499 GetRequests, 494 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-23 13:49:27,986 INFO L933 BasicCegarLoop]: 32094 mSDtfsCounter, 31811 mSDsluCounter, 64709 mSDsCounter, 0 mSdLazyCounter, 1639 mSolverCounterSat, 149 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31811 SdHoareTripleChecker+Valid, 96803 SdHoareTripleChecker+Invalid, 1788 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 149 IncrementalHoareTripleChecker+Valid, 1639 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2021-11-23 13:49:27,987 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [31811 Valid, 96803 Invalid, 1788 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [149 Valid, 1639 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2021-11-23 13:49:28,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29401 states. [2021-11-23 13:49:28,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29401 to 29399. [2021-11-23 13:49:28,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29399 states, 29372 states have (on average 1.2585795996186844) internal successors, (36967), 29398 states have internal predecessors, (36967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:49:28,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29399 states to 29399 states and 36967 transitions. [2021-11-23 13:49:28,455 INFO L78 Accepts]: Start accepts. Automaton has 29399 states and 36967 transitions. Word has length 498 [2021-11-23 13:49:28,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:49:28,455 INFO L470 AbstractCegarLoop]: Abstraction has 29399 states and 36967 transitions. [2021-11-23 13:49:28,460 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 99.6) internal successors, (498), 5 states have internal predecessors, (498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:49:28,460 INFO L276 IsEmpty]: Start isEmpty. Operand 29399 states and 36967 transitions. [2021-11-23 13:49:28,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 500 [2021-11-23 13:49:28,468 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:49:28,469 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:49:28,496 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1a3a62e-8d03-458c-8c91-7eca855efd00/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-23 13:49:28,669 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1a3a62e-8d03-458c-8c91-7eca855efd00/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:49:28,669 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 24 more)] === [2021-11-23 13:49:28,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:49:28,670 INFO L85 PathProgramCache]: Analyzing trace with hash -1211020664, now seen corresponding path program 1 times [2021-11-23 13:49:28,670 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:49:28,670 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914898373] [2021-11-23 13:49:28,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:49:28,670 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:49:28,854 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 13:49:28,854 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [850776003] [2021-11-23 13:49:28,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:49:28,858 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:49:28,859 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1a3a62e-8d03-458c-8c91-7eca855efd00/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:49:28,860 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1a3a62e-8d03-458c-8c91-7eca855efd00/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 13:49:28,877 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1a3a62e-8d03-458c-8c91-7eca855efd00/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-23 13:49:29,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:49:29,682 INFO L263 TraceCheckSpWp]: Trace formula consists of 2332 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-23 13:49:29,693 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:49:30,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:49:30,755 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 13:49:30,755 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:49:30,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914898373] [2021-11-23 13:49:30,755 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 13:49:30,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [850776003] [2021-11-23 13:49:30,756 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [850776003] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:49:30,756 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:49:30,756 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 13:49:30,757 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219690983] [2021-11-23 13:49:30,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:49:30,758 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 13:49:30,758 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:49:30,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 13:49:30,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 13:49:30,759 INFO L87 Difference]: Start difference. First operand 29399 states and 36967 transitions. Second operand has 5 states, 5 states have (on average 99.8) internal successors, (499), 5 states have internal predecessors, (499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:49:34,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:49:34,740 INFO L93 Difference]: Finished difference Result 58633 states and 73813 transitions. [2021-11-23 13:49:34,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 13:49:34,741 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 99.8) internal successors, (499), 5 states have internal predecessors, (499), 0 states have call successors, (0), 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 499 [2021-11-23 13:49:34,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:49:34,996 INFO L225 Difference]: With dead ends: 58633 [2021-11-23 13:49:34,996 INFO L226 Difference]: Without dead ends: 30514 [2021-11-23 13:49:35,008 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 500 GetRequests, 495 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-23 13:49:35,009 INFO L933 BasicCegarLoop]: 33379 mSDtfsCounter, 40096 mSDsluCounter, 60391 mSDsCounter, 0 mSdLazyCounter, 1709 mSolverCounterSat, 217 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40096 SdHoareTripleChecker+Valid, 93770 SdHoareTripleChecker+Invalid, 1926 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 217 IncrementalHoareTripleChecker+Valid, 1709 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2021-11-23 13:49:35,010 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [40096 Valid, 93770 Invalid, 1926 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [217 Valid, 1709 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2021-11-23 13:49:35,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30514 states. [2021-11-23 13:49:35,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30514 to 29399. [2021-11-23 13:49:35,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29399 states, 29372 states have (on average 1.2561623314721504) internal successors, (36896), 29398 states have internal predecessors, (36896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:49:35,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29399 states to 29399 states and 36896 transitions. [2021-11-23 13:49:35,514 INFO L78 Accepts]: Start accepts. Automaton has 29399 states and 36896 transitions. Word has length 499 [2021-11-23 13:49:35,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:49:35,515 INFO L470 AbstractCegarLoop]: Abstraction has 29399 states and 36896 transitions. [2021-11-23 13:49:35,516 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 99.8) internal successors, (499), 5 states have internal predecessors, (499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:49:35,516 INFO L276 IsEmpty]: Start isEmpty. Operand 29399 states and 36896 transitions. [2021-11-23 13:49:35,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 502 [2021-11-23 13:49:35,525 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:49:35,526 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:49:35,562 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1a3a62e-8d03-458c-8c91-7eca855efd00/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-23 13:49:35,740 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1a3a62e-8d03-458c-8c91-7eca855efd00/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:49:35,741 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 24 more)] === [2021-11-23 13:49:35,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:49:35,741 INFO L85 PathProgramCache]: Analyzing trace with hash 980614079, now seen corresponding path program 1 times [2021-11-23 13:49:35,741 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:49:35,742 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334256263] [2021-11-23 13:49:35,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:49:35,742 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:49:35,951 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 13:49:35,952 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1467157951] [2021-11-23 13:49:35,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:49:35,952 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:49:35,952 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1a3a62e-8d03-458c-8c91-7eca855efd00/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:49:35,953 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1a3a62e-8d03-458c-8c91-7eca855efd00/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 13:49:35,973 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1a3a62e-8d03-458c-8c91-7eca855efd00/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-23 13:49:36,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:49:36,912 INFO L263 TraceCheckSpWp]: Trace formula consists of 2344 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-23 13:49:36,928 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:49:37,941 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 9 [2021-11-23 13:49:38,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:49:38,060 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 13:49:38,060 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:49:38,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334256263] [2021-11-23 13:49:38,061 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 13:49:38,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1467157951] [2021-11-23 13:49:38,061 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1467157951] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:49:38,061 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:49:38,062 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-23 13:49:38,062 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823232142] [2021-11-23 13:49:38,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:49:38,063 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-23 13:49:38,063 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:49:38,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-23 13:49:38,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-23 13:49:38,064 INFO L87 Difference]: Start difference. First operand 29399 states and 36896 transitions. Second operand has 7 states, 7 states have (on average 71.57142857142857) internal successors, (501), 7 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:49:40,098 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 13:49:42,174 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 13:49:44,212 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 13:49:48,624 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 13:49:50,677 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 13:49:52,726 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []