./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec0_product40.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9ad7fb26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39b7be8c-09da-415d-b8a2-9c3539ee4b1b/bin/uautomizer-tBqnrhUYjU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39b7be8c-09da-415d-b8a2-9c3539ee4b1b/bin/uautomizer-tBqnrhUYjU/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39b7be8c-09da-415d-b8a2-9c3539ee4b1b/bin/uautomizer-tBqnrhUYjU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39b7be8c-09da-415d-b8a2-9c3539ee4b1b/bin/uautomizer-tBqnrhUYjU/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec0_product40.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39b7be8c-09da-415d-b8a2-9c3539ee4b1b/bin/uautomizer-tBqnrhUYjU/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39b7be8c-09da-415d-b8a2-9c3539ee4b1b/bin/uautomizer-tBqnrhUYjU --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 b2243f2ebf184fce0ef7b08cdc971efef96ae919ab8c33e807ab93ab6dbfb0b7 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-02 22:26:09,471 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-02 22:26:09,473 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-02 22:26:09,514 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-02 22:26:09,515 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-02 22:26:09,517 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-02 22:26:09,519 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-02 22:26:09,522 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-02 22:26:09,525 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-02 22:26:09,527 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-02 22:26:09,529 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-02 22:26:09,531 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-02 22:26:09,532 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-02 22:26:09,534 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-02 22:26:09,536 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-02 22:26:09,538 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-02 22:26:09,540 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-02 22:26:09,542 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-02 22:26:09,545 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-02 22:26:09,548 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-02 22:26:09,551 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-02 22:26:09,553 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-02 22:26:09,555 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-02 22:26:09,556 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-02 22:26:09,561 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-02 22:26:09,562 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-02 22:26:09,562 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-02 22:26:09,564 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-02 22:26:09,565 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-02 22:26:09,567 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-02 22:26:09,567 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-02 22:26:09,569 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-02 22:26:09,570 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-02 22:26:09,571 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-02 22:26:09,573 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-02 22:26:09,574 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-02 22:26:09,575 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-02 22:26:09,575 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-02 22:26:09,576 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-02 22:26:09,577 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-02 22:26:09,578 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-02 22:26:09,580 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39b7be8c-09da-415d-b8a2-9c3539ee4b1b/bin/uautomizer-tBqnrhUYjU/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-02 22:26:09,612 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-02 22:26:09,612 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-02 22:26:09,613 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-02 22:26:09,613 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-02 22:26:09,615 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-02 22:26:09,615 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-02 22:26:09,615 INFO L138 SettingsManager]: * Use SBE=true [2021-11-02 22:26:09,616 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-02 22:26:09,616 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-02 22:26:09,616 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-02 22:26:09,617 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-02 22:26:09,617 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-02 22:26:09,617 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-02 22:26:09,618 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-02 22:26:09,618 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-02 22:26:09,618 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-02 22:26:09,618 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-02 22:26:09,619 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-02 22:26:09,619 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-02 22:26:09,619 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-02 22:26:09,620 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-02 22:26:09,620 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-02 22:26:09,620 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 22:26:09,621 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-02 22:26:09,621 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-02 22:26:09,621 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-02 22:26:09,622 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-02 22:26:09,622 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-02 22:26:09,622 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-02 22:26:09,623 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-02 22:26:09,623 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-02 22:26:09,623 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-02 22:26:09,623 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_39b7be8c-09da-415d-b8a2-9c3539ee4b1b/bin/uautomizer-tBqnrhUYjU/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39b7be8c-09da-415d-b8a2-9c3539ee4b1b/bin/uautomizer-tBqnrhUYjU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b2243f2ebf184fce0ef7b08cdc971efef96ae919ab8c33e807ab93ab6dbfb0b7 [2021-11-02 22:26:09,953 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-02 22:26:09,978 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-02 22:26:09,981 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-02 22:26:09,983 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-02 22:26:09,984 INFO L275 PluginConnector]: CDTParser initialized [2021-11-02 22:26:09,985 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39b7be8c-09da-415d-b8a2-9c3539ee4b1b/bin/uautomizer-tBqnrhUYjU/../../sv-benchmarks/c/product-lines/email_spec0_product40.cil.c [2021-11-02 22:26:10,096 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39b7be8c-09da-415d-b8a2-9c3539ee4b1b/bin/uautomizer-tBqnrhUYjU/data/4c751f5fe/862d57447025483cba5917d10ed06c03/FLAGb5ac9ccdf [2021-11-02 22:26:10,974 INFO L306 CDTParser]: Found 1 translation units. [2021-11-02 22:26:10,975 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39b7be8c-09da-415d-b8a2-9c3539ee4b1b/sv-benchmarks/c/product-lines/email_spec0_product40.cil.c [2021-11-02 22:26:11,020 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39b7be8c-09da-415d-b8a2-9c3539ee4b1b/bin/uautomizer-tBqnrhUYjU/data/4c751f5fe/862d57447025483cba5917d10ed06c03/FLAGb5ac9ccdf [2021-11-02 22:26:11,128 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39b7be8c-09da-415d-b8a2-9c3539ee4b1b/bin/uautomizer-tBqnrhUYjU/data/4c751f5fe/862d57447025483cba5917d10ed06c03 [2021-11-02 22:26:11,131 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-02 22:26:11,134 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-02 22:26:11,140 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-02 22:26:11,140 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-02 22:26:11,145 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-02 22:26:11,146 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 10:26:11" (1/1) ... [2021-11-02 22:26:11,148 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5824f62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:26:11, skipping insertion in model container [2021-11-02 22:26:11,149 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 10:26:11" (1/1) ... [2021-11-02 22:26:11,158 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-02 22:26:11,276 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-02 22:26:11,642 WARN L228 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_39b7be8c-09da-415d-b8a2-9c3539ee4b1b/sv-benchmarks/c/product-lines/email_spec0_product40.cil.c[7657,7670] [2021-11-02 22:26:11,975 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 22:26:11,997 INFO L203 MainTranslator]: Completed pre-run [2021-11-02 22:26:12,043 WARN L228 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_39b7be8c-09da-415d-b8a2-9c3539ee4b1b/sv-benchmarks/c/product-lines/email_spec0_product40.cil.c[7657,7670] [2021-11-02 22:26:12,226 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 22:26:12,300 INFO L208 MainTranslator]: Completed translation [2021-11-02 22:26:12,301 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:26:12 WrapperNode [2021-11-02 22:26:12,302 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-02 22:26:12,304 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-02 22:26:12,305 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-02 22:26:12,305 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-02 22:26:12,314 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:26:12" (1/1) ... [2021-11-02 22:26:12,392 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:26:12" (1/1) ... [2021-11-02 22:26:12,543 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-02 22:26:12,544 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-02 22:26:12,544 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-02 22:26:12,545 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-02 22:26:12,556 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:26:12" (1/1) ... [2021-11-02 22:26:12,556 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:26:12" (1/1) ... [2021-11-02 22:26:12,621 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:26:12" (1/1) ... [2021-11-02 22:26:12,624 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:26:12" (1/1) ... [2021-11-02 22:26:12,710 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:26:12" (1/1) ... [2021-11-02 22:26:12,754 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:26:12" (1/1) ... [2021-11-02 22:26:12,771 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:26:12" (1/1) ... [2021-11-02 22:26:12,809 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-02 22:26:12,812 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-02 22:26:12,813 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-02 22:26:12,813 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-02 22:26:12,814 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:26:12" (1/1) ... [2021-11-02 22:26:12,826 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 22:26:12,841 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39b7be8c-09da-415d-b8a2-9c3539ee4b1b/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:26:12,856 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39b7be8c-09da-415d-b8a2-9c3539ee4b1b/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-02 22:26:12,870 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39b7be8c-09da-415d-b8a2-9c3539ee4b1b/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-02 22:26:12,917 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2021-11-02 22:26:12,917 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-02 22:26:12,918 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-02 22:26:12,918 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-02 22:26:12,918 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-02 22:26:15,834 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-02 22:26:15,835 INFO L299 CfgBuilder]: Removed 497 assume(true) statements. [2021-11-02 22:26:15,839 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 10:26:15 BoogieIcfgContainer [2021-11-02 22:26:15,839 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-02 22:26:15,844 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-02 22:26:15,844 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-02 22:26:15,848 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-02 22:26:15,849 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 10:26:11" (1/3) ... [2021-11-02 22:26:15,850 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c8f6302 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 10:26:15, skipping insertion in model container [2021-11-02 22:26:15,850 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:26:12" (2/3) ... [2021-11-02 22:26:15,851 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c8f6302 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 10:26:15, skipping insertion in model container [2021-11-02 22:26:15,851 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 10:26:15" (3/3) ... [2021-11-02 22:26:15,853 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec0_product40.cil.c [2021-11-02 22:26:15,864 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-02 22:26:15,865 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-11-02 22:26:15,948 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-02 22:26:15,960 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 [2021-11-02 22:26:15,960 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-11-02 22:26:16,007 INFO L276 IsEmpty]: Start isEmpty. Operand has 672 states, 665 states have (on average 1.7338345864661655) internal successors, (1153), 671 states have internal predecessors, (1153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:26:16,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-11-02 22:26:16,041 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:26:16,042 INFO L513 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] [2021-11-02 22:26:16,043 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-02 22:26:16,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:26:16,051 INFO L85 PathProgramCache]: Analyzing trace with hash -324340494, now seen corresponding path program 1 times [2021-11-02 22:26:16,074 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:26:16,075 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142875300] [2021-11-02 22:26:16,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:26:16,077 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:26:16,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:26:16,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:26:16,633 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:26:16,633 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142875300] [2021-11-02 22:26:16,634 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2142875300] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:26:16,635 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:26:16,635 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 22:26:16,644 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295619931] [2021-11-02 22:26:16,652 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 22:26:16,652 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:26:16,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 22:26:16,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:26:16,683 INFO L87 Difference]: Start difference. First operand has 672 states, 665 states have (on average 1.7338345864661655) internal successors, (1153), 671 states have internal predecessors, (1153), 0 states have call successors, (0), 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 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:26:17,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:26:17,092 INFO L93 Difference]: Finished difference Result 1981 states and 3401 transitions. [2021-11-02 22:26:17,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:26:17,095 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2021-11-02 22:26:17,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:26:17,140 INFO L225 Difference]: With dead ends: 1981 [2021-11-02 22:26:17,141 INFO L226 Difference]: Without dead ends: 1268 [2021-11-02 22:26:17,154 INFO L786 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 [2021-11-02 22:26:17,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1268 states. [2021-11-02 22:26:17,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1268 to 643. [2021-11-02 22:26:17,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 643 states, 637 states have (on average 1.7205651491365777) internal successors, (1096), 642 states have internal predecessors, (1096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:26:17,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 643 states to 643 states and 1096 transitions. [2021-11-02 22:26:17,299 INFO L78 Accepts]: Start accepts. Automaton has 643 states and 1096 transitions. Word has length 47 [2021-11-02 22:26:17,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:26:17,299 INFO L470 AbstractCegarLoop]: Abstraction has 643 states and 1096 transitions. [2021-11-02 22:26:17,300 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:26:17,300 INFO L276 IsEmpty]: Start isEmpty. Operand 643 states and 1096 transitions. [2021-11-02 22:26:17,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-11-02 22:26:17,307 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:26:17,307 INFO L513 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] [2021-11-02 22:26:17,307 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-02 22:26:17,308 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-02 22:26:17,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:26:17,309 INFO L85 PathProgramCache]: Analyzing trace with hash -604611903, now seen corresponding path program 1 times [2021-11-02 22:26:17,309 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:26:17,310 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628124537] [2021-11-02 22:26:17,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:26:17,310 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:26:17,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:26:17,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:26:17,468 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:26:17,469 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628124537] [2021-11-02 22:26:17,469 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [628124537] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:26:17,469 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:26:17,470 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-02 22:26:17,470 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908132358] [2021-11-02 22:26:17,472 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 22:26:17,472 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:26:17,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 22:26:17,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-02 22:26:17,473 INFO L87 Difference]: Start difference. First operand 643 states and 1096 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:26:17,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:26:17,733 INFO L93 Difference]: Finished difference Result 1878 states and 3204 transitions. [2021-11-02 22:26:17,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-02 22:26:17,734 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 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 49 [2021-11-02 22:26:17,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:26:17,746 INFO L225 Difference]: With dead ends: 1878 [2021-11-02 22:26:17,746 INFO L226 Difference]: Without dead ends: 1254 [2021-11-02 22:26:17,749 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-02 22:26:17,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1254 states. [2021-11-02 22:26:17,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1254 to 643. [2021-11-02 22:26:17,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 643 states, 637 states have (on average 1.718995290423862) internal successors, (1095), 642 states have internal predecessors, (1095), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:26:17,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 643 states to 643 states and 1095 transitions. [2021-11-02 22:26:17,801 INFO L78 Accepts]: Start accepts. Automaton has 643 states and 1095 transitions. Word has length 49 [2021-11-02 22:26:17,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:26:17,802 INFO L470 AbstractCegarLoop]: Abstraction has 643 states and 1095 transitions. [2021-11-02 22:26:17,802 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:26:17,802 INFO L276 IsEmpty]: Start isEmpty. Operand 643 states and 1095 transitions. [2021-11-02 22:26:17,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-11-02 22:26:17,807 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:26:17,807 INFO L513 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] [2021-11-02 22:26:17,808 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-02 22:26:17,808 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-02 22:26:17,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:26:17,822 INFO L85 PathProgramCache]: Analyzing trace with hash -959457516, now seen corresponding path program 1 times [2021-11-02 22:26:17,822 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:26:17,822 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407961155] [2021-11-02 22:26:17,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:26:17,823 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:26:17,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:26:17,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:26:17,983 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:26:17,986 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407961155] [2021-11-02 22:26:17,987 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1407961155] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:26:17,988 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:26:17,988 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 22:26:17,990 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849451593] [2021-11-02 22:26:17,991 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 22:26:17,992 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:26:17,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 22:26:17,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:26:17,994 INFO L87 Difference]: Start difference. First operand 643 states and 1095 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:26:18,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:26:18,058 INFO L93 Difference]: Finished difference Result 1268 states and 2164 transitions. [2021-11-02 22:26:18,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:26:18,059 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 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 50 [2021-11-02 22:26:18,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:26:18,064 INFO L225 Difference]: With dead ends: 1268 [2021-11-02 22:26:18,065 INFO L226 Difference]: Without dead ends: 648 [2021-11-02 22:26:18,067 INFO L786 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 [2021-11-02 22:26:18,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 648 states. [2021-11-02 22:26:18,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 648 to 643. [2021-11-02 22:26:18,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 643 states, 637 states have (on average 1.7142857142857142) internal successors, (1092), 642 states have internal predecessors, (1092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:26:18,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 643 states to 643 states and 1092 transitions. [2021-11-02 22:26:18,146 INFO L78 Accepts]: Start accepts. Automaton has 643 states and 1092 transitions. Word has length 50 [2021-11-02 22:26:18,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:26:18,146 INFO L470 AbstractCegarLoop]: Abstraction has 643 states and 1092 transitions. [2021-11-02 22:26:18,147 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:26:18,147 INFO L276 IsEmpty]: Start isEmpty. Operand 643 states and 1092 transitions. [2021-11-02 22:26:18,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-11-02 22:26:18,149 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:26:18,150 INFO L513 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] [2021-11-02 22:26:18,150 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-02 22:26:18,150 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-02 22:26:18,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:26:18,151 INFO L85 PathProgramCache]: Analyzing trace with hash 1961104665, now seen corresponding path program 1 times [2021-11-02 22:26:18,151 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:26:18,151 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228572730] [2021-11-02 22:26:18,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:26:18,152 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:26:18,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:26:18,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:26:18,258 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:26:18,258 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228572730] [2021-11-02 22:26:18,259 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1228572730] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:26:18,260 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:26:18,260 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-02 22:26:18,260 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454771686] [2021-11-02 22:26:18,261 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 22:26:18,261 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:26:18,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 22:26:18,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-02 22:26:18,263 INFO L87 Difference]: Start difference. First operand 643 states and 1092 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:26:18,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:26:18,485 INFO L93 Difference]: Finished difference Result 1868 states and 3184 transitions. [2021-11-02 22:26:18,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 22:26:18,485 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 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 52 [2021-11-02 22:26:18,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:26:18,495 INFO L225 Difference]: With dead ends: 1868 [2021-11-02 22:26:18,496 INFO L226 Difference]: Without dead ends: 1252 [2021-11-02 22:26:18,498 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-02 22:26:18,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1252 states. [2021-11-02 22:26:18,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1252 to 643. [2021-11-02 22:26:18,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 643 states, 637 states have (on average 1.7127158555729984) internal successors, (1091), 642 states have internal predecessors, (1091), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:26:18,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 643 states to 643 states and 1091 transitions. [2021-11-02 22:26:18,547 INFO L78 Accepts]: Start accepts. Automaton has 643 states and 1091 transitions. Word has length 52 [2021-11-02 22:26:18,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:26:18,550 INFO L470 AbstractCegarLoop]: Abstraction has 643 states and 1091 transitions. [2021-11-02 22:26:18,550 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:26:18,550 INFO L276 IsEmpty]: Start isEmpty. Operand 643 states and 1091 transitions. [2021-11-02 22:26:18,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-11-02 22:26:18,552 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:26:18,553 INFO L513 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] [2021-11-02 22:26:18,553 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-02 22:26:18,553 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-02 22:26:18,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:26:18,556 INFO L85 PathProgramCache]: Analyzing trace with hash -766940458, now seen corresponding path program 1 times [2021-11-02 22:26:18,556 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:26:18,557 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574327116] [2021-11-02 22:26:18,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:26:18,558 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:26:18,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:26:18,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:26:18,701 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:26:18,701 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574327116] [2021-11-02 22:26:18,701 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [574327116] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:26:18,702 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:26:18,702 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-02 22:26:18,702 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630019073] [2021-11-02 22:26:18,703 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 22:26:18,703 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:26:18,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 22:26:18,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-02 22:26:18,705 INFO L87 Difference]: Start difference. First operand 643 states and 1091 transitions. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:26:18,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:26:18,937 INFO L93 Difference]: Finished difference Result 1873 states and 3188 transitions. [2021-11-02 22:26:18,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 22:26:18,938 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 0 states have call successors, (0), 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 53 [2021-11-02 22:26:18,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:26:18,948 INFO L225 Difference]: With dead ends: 1873 [2021-11-02 22:26:18,949 INFO L226 Difference]: Without dead ends: 1257 [2021-11-02 22:26:18,951 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-02 22:26:18,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1257 states. [2021-11-02 22:26:19,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1257 to 643. [2021-11-02 22:26:19,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 643 states, 637 states have (on average 1.7111459968602827) internal successors, (1090), 642 states have internal predecessors, (1090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:26:19,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 643 states to 643 states and 1090 transitions. [2021-11-02 22:26:19,016 INFO L78 Accepts]: Start accepts. Automaton has 643 states and 1090 transitions. Word has length 53 [2021-11-02 22:26:19,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:26:19,017 INFO L470 AbstractCegarLoop]: Abstraction has 643 states and 1090 transitions. [2021-11-02 22:26:19,017 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:26:19,017 INFO L276 IsEmpty]: Start isEmpty. Operand 643 states and 1090 transitions. [2021-11-02 22:26:19,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-11-02 22:26:19,021 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:26:19,022 INFO L513 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] [2021-11-02 22:26:19,022 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-02 22:26:19,022 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-02 22:26:19,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:26:19,023 INFO L85 PathProgramCache]: Analyzing trace with hash -1765443394, now seen corresponding path program 1 times [2021-11-02 22:26:19,024 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:26:19,024 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371946387] [2021-11-02 22:26:19,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:26:19,025 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:26:19,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:26:19,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:26:19,152 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:26:19,152 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371946387] [2021-11-02 22:26:19,152 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1371946387] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:26:19,153 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:26:19,154 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 22:26:19,157 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987684775] [2021-11-02 22:26:19,158 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 22:26:19,158 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:26:19,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 22:26:19,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:26:19,160 INFO L87 Difference]: Start difference. First operand 643 states and 1090 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:26:19,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:26:19,230 INFO L93 Difference]: Finished difference Result 1001 states and 1667 transitions. [2021-11-02 22:26:19,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:26:19,231 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 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 54 [2021-11-02 22:26:19,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:26:19,236 INFO L225 Difference]: With dead ends: 1001 [2021-11-02 22:26:19,237 INFO L226 Difference]: Without dead ends: 646 [2021-11-02 22:26:19,238 INFO L786 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 [2021-11-02 22:26:19,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 646 states. [2021-11-02 22:26:19,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 646 to 645. [2021-11-02 22:26:19,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 645 states, 639 states have (on average 1.7089201877934272) internal successors, (1092), 644 states have internal predecessors, (1092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:26:19,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 645 states to 645 states and 1092 transitions. [2021-11-02 22:26:19,288 INFO L78 Accepts]: Start accepts. Automaton has 645 states and 1092 transitions. Word has length 54 [2021-11-02 22:26:19,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:26:19,289 INFO L470 AbstractCegarLoop]: Abstraction has 645 states and 1092 transitions. [2021-11-02 22:26:19,290 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:26:19,290 INFO L276 IsEmpty]: Start isEmpty. Operand 645 states and 1092 transitions. [2021-11-02 22:26:19,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-02 22:26:19,292 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:26:19,292 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:26:19,293 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-02 22:26:19,293 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-02 22:26:19,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:26:19,294 INFO L85 PathProgramCache]: Analyzing trace with hash 152866832, now seen corresponding path program 1 times [2021-11-02 22:26:19,294 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:26:19,294 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767972897] [2021-11-02 22:26:19,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:26:19,295 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:26:19,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:26:19,365 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:26:19,365 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:26:19,366 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767972897] [2021-11-02 22:26:19,366 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1767972897] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:26:19,366 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:26:19,366 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 22:26:19,367 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207946707] [2021-11-02 22:26:19,367 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 22:26:19,368 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:26:19,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 22:26:19,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:26:19,369 INFO L87 Difference]: Start difference. First operand 645 states and 1092 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:26:19,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:26:19,482 INFO L93 Difference]: Finished difference Result 1821 states and 3100 transitions. [2021-11-02 22:26:19,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:26:19,482 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 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 62 [2021-11-02 22:26:19,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:26:19,492 INFO L225 Difference]: With dead ends: 1821 [2021-11-02 22:26:19,492 INFO L226 Difference]: Without dead ends: 1207 [2021-11-02 22:26:19,494 INFO L786 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 [2021-11-02 22:26:19,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1207 states. [2021-11-02 22:26:19,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1207 to 852. [2021-11-02 22:26:19,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 852 states, 846 states have (on average 1.7423167848699763) internal successors, (1474), 851 states have internal predecessors, (1474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:26:19,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 852 states to 852 states and 1474 transitions. [2021-11-02 22:26:19,568 INFO L78 Accepts]: Start accepts. Automaton has 852 states and 1474 transitions. Word has length 62 [2021-11-02 22:26:19,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:26:19,568 INFO L470 AbstractCegarLoop]: Abstraction has 852 states and 1474 transitions. [2021-11-02 22:26:19,569 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:26:19,569 INFO L276 IsEmpty]: Start isEmpty. Operand 852 states and 1474 transitions. [2021-11-02 22:26:19,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-02 22:26:19,571 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:26:19,572 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:26:19,572 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-02 22:26:19,572 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-02 22:26:19,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:26:19,573 INFO L85 PathProgramCache]: Analyzing trace with hash -1513751471, now seen corresponding path program 1 times [2021-11-02 22:26:19,573 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:26:19,574 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066905101] [2021-11-02 22:26:19,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:26:19,574 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:26:19,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:26:19,666 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:26:19,667 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:26:19,667 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066905101] [2021-11-02 22:26:19,667 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1066905101] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:26:19,668 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:26:19,668 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-02 22:26:19,668 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459623309] [2021-11-02 22:26:19,669 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 22:26:19,669 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:26:19,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 22:26:19,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-02 22:26:19,682 INFO L87 Difference]: Start difference. First operand 852 states and 1474 transitions. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:26:20,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:26:20,191 INFO L93 Difference]: Finished difference Result 2486 states and 4328 transitions. [2021-11-02 22:26:20,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 22:26:20,192 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2021-11-02 22:26:20,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:26:20,206 INFO L225 Difference]: With dead ends: 2486 [2021-11-02 22:26:20,206 INFO L226 Difference]: Without dead ends: 1665 [2021-11-02 22:26:20,208 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-02 22:26:20,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1665 states. [2021-11-02 22:26:20,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1665 to 852. [2021-11-02 22:26:20,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 852 states, 846 states have (on average 1.739952718676123) internal successors, (1472), 851 states have internal predecessors, (1472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:26:20,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 852 states to 852 states and 1472 transitions. [2021-11-02 22:26:20,310 INFO L78 Accepts]: Start accepts. Automaton has 852 states and 1472 transitions. Word has length 63 [2021-11-02 22:26:20,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:26:20,310 INFO L470 AbstractCegarLoop]: Abstraction has 852 states and 1472 transitions. [2021-11-02 22:26:20,311 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:26:20,311 INFO L276 IsEmpty]: Start isEmpty. Operand 852 states and 1472 transitions. [2021-11-02 22:26:20,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-02 22:26:20,313 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:26:20,321 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:26:20,322 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-02 22:26:20,322 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-02 22:26:20,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:26:20,325 INFO L85 PathProgramCache]: Analyzing trace with hash -1907184742, now seen corresponding path program 1 times [2021-11-02 22:26:20,325 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:26:20,325 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455109443] [2021-11-02 22:26:20,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:26:20,326 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:26:20,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:26:20,417 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:26:20,417 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:26:20,418 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455109443] [2021-11-02 22:26:20,418 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [455109443] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:26:20,418 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:26:20,419 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 22:26:20,419 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538976613] [2021-11-02 22:26:20,420 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 22:26:20,420 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:26:20,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 22:26:20,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:26:20,423 INFO L87 Difference]: Start difference. First operand 852 states and 1472 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:26:20,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:26:20,556 INFO L93 Difference]: Finished difference Result 2484 states and 4320 transitions. [2021-11-02 22:26:20,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:26:20,557 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2021-11-02 22:26:20,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:26:20,570 INFO L225 Difference]: With dead ends: 2484 [2021-11-02 22:26:20,570 INFO L226 Difference]: Without dead ends: 1663 [2021-11-02 22:26:20,577 INFO L786 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 [2021-11-02 22:26:20,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1663 states. [2021-11-02 22:26:20,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1663 to 1308. [2021-11-02 22:26:20,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1308 states, 1302 states have (on average 1.7764976958525345) internal successors, (2313), 1307 states have internal predecessors, (2313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:26:20,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1308 states to 1308 states and 2313 transitions. [2021-11-02 22:26:20,728 INFO L78 Accepts]: Start accepts. Automaton has 1308 states and 2313 transitions. Word has length 64 [2021-11-02 22:26:20,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:26:20,729 INFO L470 AbstractCegarLoop]: Abstraction has 1308 states and 2313 transitions. [2021-11-02 22:26:20,730 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:26:20,730 INFO L276 IsEmpty]: Start isEmpty. Operand 1308 states and 2313 transitions. [2021-11-02 22:26:20,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-02 22:26:20,733 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:26:20,733 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:26:20,734 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-02 22:26:20,734 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-02 22:26:20,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:26:20,735 INFO L85 PathProgramCache]: Analyzing trace with hash -520279492, now seen corresponding path program 1 times [2021-11-02 22:26:20,735 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:26:20,735 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203502324] [2021-11-02 22:26:20,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:26:20,736 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:26:20,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:26:20,820 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:26:20,820 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:26:20,820 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203502324] [2021-11-02 22:26:20,821 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1203502324] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:26:20,821 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [828540231] [2021-11-02 22:26:20,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:26:20,821 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:26:20,822 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39b7be8c-09da-415d-b8a2-9c3539ee4b1b/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:26:20,824 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39b7be8c-09da-415d-b8a2-9c3539ee4b1b/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:26:20,832 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39b7be8c-09da-415d-b8a2-9c3539ee4b1b/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-02 22:26:21,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:26:21,175 INFO L263 TraceCheckSpWp]: Trace formula consists of 914 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-02 22:26:21,186 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:26:21,531 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:26:21,532 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [828540231] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:26:21,532 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:26:21,532 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2021-11-02 22:26:21,532 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462580632] [2021-11-02 22:26:21,533 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 22:26:21,533 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:26:21,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 22:26:21,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-02 22:26:21,534 INFO L87 Difference]: Start difference. First operand 1308 states and 2313 transitions. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:26:21,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:26:21,708 INFO L93 Difference]: Finished difference Result 2284 states and 3944 transitions. [2021-11-02 22:26:21,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-02 22:26:21,709 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2021-11-02 22:26:21,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:26:21,724 INFO L225 Difference]: With dead ends: 2284 [2021-11-02 22:26:21,724 INFO L226 Difference]: Without dead ends: 1929 [2021-11-02 22:26:21,726 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-02 22:26:21,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1929 states. [2021-11-02 22:26:21,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1929 to 1571. [2021-11-02 22:26:21,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1571 states, 1565 states have (on average 1.7840255591054313) internal successors, (2792), 1570 states have internal predecessors, (2792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:26:21,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1571 states to 1571 states and 2792 transitions. [2021-11-02 22:26:21,860 INFO L78 Accepts]: Start accepts. Automaton has 1571 states and 2792 transitions. Word has length 64 [2021-11-02 22:26:21,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:26:21,860 INFO L470 AbstractCegarLoop]: Abstraction has 1571 states and 2792 transitions. [2021-11-02 22:26:21,860 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:26:21,861 INFO L276 IsEmpty]: Start isEmpty. Operand 1571 states and 2792 transitions. [2021-11-02 22:26:21,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-02 22:26:21,865 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:26:21,865 INFO L513 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] [2021-11-02 22:26:21,910 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39b7be8c-09da-415d-b8a2-9c3539ee4b1b/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-02 22:26:22,093 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39b7be8c-09da-415d-b8a2-9c3539ee4b1b/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-11-02 22:26:22,094 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-02 22:26:22,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:26:22,094 INFO L85 PathProgramCache]: Analyzing trace with hash 50994559, now seen corresponding path program 1 times [2021-11-02 22:26:22,094 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:26:22,095 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642256322] [2021-11-02 22:26:22,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:26:22,095 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:26:22,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:26:22,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:26:22,186 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:26:22,186 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642256322] [2021-11-02 22:26:22,187 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [642256322] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:26:22,187 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:26:22,187 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 22:26:22,187 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460445498] [2021-11-02 22:26:22,188 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 22:26:22,188 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:26:22,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 22:26:22,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:26:22,189 INFO L87 Difference]: Start difference. First operand 1571 states and 2792 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:26:22,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:26:22,417 INFO L93 Difference]: Finished difference Result 4300 states and 7661 transitions. [2021-11-02 22:26:22,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:26:22,418 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2021-11-02 22:26:22,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:26:22,440 INFO L225 Difference]: With dead ends: 4300 [2021-11-02 22:26:22,440 INFO L226 Difference]: Without dead ends: 2830 [2021-11-02 22:26:22,444 INFO L786 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 [2021-11-02 22:26:22,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2830 states. [2021-11-02 22:26:22,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2830 to 2475. [2021-11-02 22:26:22,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2475 states, 2469 states have (on average 1.8035641960307818) internal successors, (4453), 2474 states have internal predecessors, (4453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:26:22,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2475 states to 2475 states and 4453 transitions. [2021-11-02 22:26:22,642 INFO L78 Accepts]: Start accepts. Automaton has 2475 states and 4453 transitions. Word has length 68 [2021-11-02 22:26:22,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:26:22,643 INFO L470 AbstractCegarLoop]: Abstraction has 2475 states and 4453 transitions. [2021-11-02 22:26:22,643 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:26:22,643 INFO L276 IsEmpty]: Start isEmpty. Operand 2475 states and 4453 transitions. [2021-11-02 22:26:22,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-02 22:26:22,649 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:26:22,650 INFO L513 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] [2021-11-02 22:26:22,650 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-02 22:26:22,650 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-02 22:26:22,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:26:22,651 INFO L85 PathProgramCache]: Analyzing trace with hash 801427455, now seen corresponding path program 1 times [2021-11-02 22:26:22,651 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:26:22,652 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895006348] [2021-11-02 22:26:22,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:26:22,652 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:26:22,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:26:22,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:26:22,753 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:26:22,754 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895006348] [2021-11-02 22:26:22,754 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895006348] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:26:22,754 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:26:22,754 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 22:26:22,755 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293294613] [2021-11-02 22:26:22,755 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 22:26:22,755 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:26:22,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 22:26:22,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:26:22,757 INFO L87 Difference]: Start difference. First operand 2475 states and 4453 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:26:23,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:26:23,060 INFO L93 Difference]: Finished difference Result 6748 states and 12163 transitions. [2021-11-02 22:26:23,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:26:23,066 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 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 69 [2021-11-02 22:26:23,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:26:23,100 INFO L225 Difference]: With dead ends: 6748 [2021-11-02 22:26:23,100 INFO L226 Difference]: Without dead ends: 4408 [2021-11-02 22:26:23,105 INFO L786 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 [2021-11-02 22:26:23,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4408 states. [2021-11-02 22:26:23,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4408 to 4053. [2021-11-02 22:26:23,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4053 states, 4047 states have (on average 1.8161601186063752) internal successors, (7350), 4052 states have internal predecessors, (7350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:26:23,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4053 states to 4053 states and 7350 transitions. [2021-11-02 22:26:23,404 INFO L78 Accepts]: Start accepts. Automaton has 4053 states and 7350 transitions. Word has length 69 [2021-11-02 22:26:23,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:26:23,404 INFO L470 AbstractCegarLoop]: Abstraction has 4053 states and 7350 transitions. [2021-11-02 22:26:23,404 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:26:23,404 INFO L276 IsEmpty]: Start isEmpty. Operand 4053 states and 7350 transitions. [2021-11-02 22:26:23,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-02 22:26:23,410 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:26:23,410 INFO L513 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] [2021-11-02 22:26:23,411 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-02 22:26:23,411 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-02 22:26:23,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:26:23,411 INFO L85 PathProgramCache]: Analyzing trace with hash 183505326, now seen corresponding path program 1 times [2021-11-02 22:26:23,412 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:26:23,412 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638755697] [2021-11-02 22:26:23,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:26:23,412 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:26:23,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:26:23,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:26:23,491 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:26:23,491 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638755697] [2021-11-02 22:26:23,491 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1638755697] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:26:23,492 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:26:23,492 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 22:26:23,492 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112703893] [2021-11-02 22:26:23,492 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 22:26:23,493 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:26:23,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 22:26:23,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:26:23,494 INFO L87 Difference]: Start difference. First operand 4053 states and 7350 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:26:23,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:26:23,904 INFO L93 Difference]: Finished difference Result 11198 states and 20337 transitions. [2021-11-02 22:26:23,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:26:23,905 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 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 70 [2021-11-02 22:26:23,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:26:23,966 INFO L225 Difference]: With dead ends: 11198 [2021-11-02 22:26:23,966 INFO L226 Difference]: Without dead ends: 7314 [2021-11-02 22:26:23,973 INFO L786 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 [2021-11-02 22:26:23,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7314 states. [2021-11-02 22:26:24,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7314 to 6959. [2021-11-02 22:26:24,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6959 states, 6953 states have (on average 1.8235294117647058) internal successors, (12679), 6958 states have internal predecessors, (12679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:26:24,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6959 states to 6959 states and 12679 transitions. [2021-11-02 22:26:24,527 INFO L78 Accepts]: Start accepts. Automaton has 6959 states and 12679 transitions. Word has length 70 [2021-11-02 22:26:24,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:26:24,528 INFO L470 AbstractCegarLoop]: Abstraction has 6959 states and 12679 transitions. [2021-11-02 22:26:24,529 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:26:24,529 INFO L276 IsEmpty]: Start isEmpty. Operand 6959 states and 12679 transitions. [2021-11-02 22:26:24,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-02 22:26:24,537 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:26:24,538 INFO L513 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] [2021-11-02 22:26:24,538 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-02 22:26:24,538 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-02 22:26:24,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:26:24,539 INFO L85 PathProgramCache]: Analyzing trace with hash 1303034190, now seen corresponding path program 1 times [2021-11-02 22:26:24,539 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:26:24,539 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385297077] [2021-11-02 22:26:24,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:26:24,540 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:26:24,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:26:24,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:26:24,610 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:26:24,611 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385297077] [2021-11-02 22:26:24,611 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1385297077] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:26:24,611 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:26:24,611 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 22:26:24,611 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518948303] [2021-11-02 22:26:24,612 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 22:26:24,612 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:26:24,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 22:26:24,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:26:24,613 INFO L87 Difference]: Start difference. First operand 6959 states and 12679 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:26:25,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:26:25,375 INFO L93 Difference]: Finished difference Result 20242 states and 36935 transitions. [2021-11-02 22:26:25,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:26:25,376 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2021-11-02 22:26:25,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:26:25,422 INFO L225 Difference]: With dead ends: 20242 [2021-11-02 22:26:25,422 INFO L226 Difference]: Without dead ends: 13460 [2021-11-02 22:26:25,434 INFO L786 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 [2021-11-02 22:26:25,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13460 states. [2021-11-02 22:26:26,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13460 to 13105. [2021-11-02 22:26:26,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13105 states, 13099 states have (on average 1.8279257958622797) internal successors, (23944), 13104 states have internal predecessors, (23944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:26:26,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13105 states to 13105 states and 23944 transitions. [2021-11-02 22:26:26,229 INFO L78 Accepts]: Start accepts. Automaton has 13105 states and 23944 transitions. Word has length 71 [2021-11-02 22:26:26,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:26:26,229 INFO L470 AbstractCegarLoop]: Abstraction has 13105 states and 23944 transitions. [2021-11-02 22:26:26,230 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:26:26,230 INFO L276 IsEmpty]: Start isEmpty. Operand 13105 states and 23944 transitions. [2021-11-02 22:26:26,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-02 22:26:26,241 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:26:26,242 INFO L513 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] [2021-11-02 22:26:26,242 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-02 22:26:26,242 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-02 22:26:26,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:26:26,243 INFO L85 PathProgramCache]: Analyzing trace with hash -191125409, now seen corresponding path program 1 times [2021-11-02 22:26:26,243 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:26:26,244 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340839022] [2021-11-02 22:26:26,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:26:26,244 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:26:26,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:26:26,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:26:26,317 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:26:26,317 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340839022] [2021-11-02 22:26:26,317 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [340839022] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:26:26,317 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:26:26,318 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 22:26:26,320 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004115040] [2021-11-02 22:26:26,321 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 22:26:26,321 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:26:26,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 22:26:26,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:26:26,322 INFO L87 Difference]: Start difference. First operand 13105 states and 23944 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:26:27,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:26:27,729 INFO L93 Difference]: Finished difference Result 38510 states and 70429 transitions. [2021-11-02 22:26:27,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:26:27,730 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2021-11-02 22:26:27,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:26:27,832 INFO L225 Difference]: With dead ends: 38510 [2021-11-02 22:26:27,833 INFO L226 Difference]: Without dead ends: 25590 [2021-11-02 22:26:27,862 INFO L786 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 [2021-11-02 22:26:27,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25590 states. [2021-11-02 22:26:29,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25590 to 25235. [2021-11-02 22:26:29,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25235 states, 25229 states have (on average 1.8293630346030363) internal successors, (46153), 25234 states have internal predecessors, (46153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:26:29,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25235 states to 25235 states and 46153 transitions. [2021-11-02 22:26:29,477 INFO L78 Accepts]: Start accepts. Automaton has 25235 states and 46153 transitions. Word has length 72 [2021-11-02 22:26:29,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:26:29,478 INFO L470 AbstractCegarLoop]: Abstraction has 25235 states and 46153 transitions. [2021-11-02 22:26:29,478 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:26:29,478 INFO L276 IsEmpty]: Start isEmpty. Operand 25235 states and 46153 transitions. [2021-11-02 22:26:29,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-02 22:26:29,491 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:26:29,492 INFO L513 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] [2021-11-02 22:26:29,492 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-02 22:26:29,492 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-02 22:26:29,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:26:29,493 INFO L85 PathProgramCache]: Analyzing trace with hash 922484127, now seen corresponding path program 1 times [2021-11-02 22:26:29,493 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:26:29,493 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111474594] [2021-11-02 22:26:29,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:26:29,494 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:26:29,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:26:29,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:26:29,563 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:26:29,563 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111474594] [2021-11-02 22:26:29,563 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [111474594] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:26:29,564 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:26:29,564 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 22:26:29,564 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030944256] [2021-11-02 22:26:29,565 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 22:26:29,565 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:26:29,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 22:26:29,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:26:29,567 INFO L87 Difference]: Start difference. First operand 25235 states and 46153 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:26:31,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:26:31,341 INFO L93 Difference]: Finished difference Result 69539 states and 126792 transitions. [2021-11-02 22:26:31,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:26:31,341 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 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 73 [2021-11-02 22:26:31,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:26:31,518 INFO L225 Difference]: With dead ends: 69539 [2021-11-02 22:26:31,518 INFO L226 Difference]: Without dead ends: 44536 [2021-11-02 22:26:31,559 INFO L786 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 [2021-11-02 22:26:31,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44536 states. [2021-11-02 22:26:34,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44536 to 44181. [2021-11-02 22:26:34,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44181 states, 44175 states have (on average 1.8184493491794) internal successors, (80330), 44180 states have internal predecessors, (80330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:26:34,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44181 states to 44181 states and 80330 transitions. [2021-11-02 22:26:34,342 INFO L78 Accepts]: Start accepts. Automaton has 44181 states and 80330 transitions. Word has length 73 [2021-11-02 22:26:34,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:26:34,342 INFO L470 AbstractCegarLoop]: Abstraction has 44181 states and 80330 transitions. [2021-11-02 22:26:34,343 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:26:34,343 INFO L276 IsEmpty]: Start isEmpty. Operand 44181 states and 80330 transitions. [2021-11-02 22:26:34,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-02 22:26:34,361 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:26:34,362 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:26:34,362 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-02 22:26:34,363 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-02 22:26:34,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:26:34,364 INFO L85 PathProgramCache]: Analyzing trace with hash 670111640, now seen corresponding path program 1 times [2021-11-02 22:26:34,364 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:26:34,364 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130781930] [2021-11-02 22:26:34,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:26:34,365 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:26:34,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:26:34,464 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-02 22:26:34,465 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:26:34,465 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130781930] [2021-11-02 22:26:34,465 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [130781930] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:26:34,465 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:26:34,466 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-02 22:26:34,466 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293694716] [2021-11-02 22:26:34,467 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 22:26:34,467 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:26:34,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 22:26:34,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-02 22:26:34,468 INFO L87 Difference]: Start difference. First operand 44181 states and 80330 transitions. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:26:38,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:26:38,287 INFO L93 Difference]: Finished difference Result 130152 states and 236625 transitions. [2021-11-02 22:26:38,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-02 22:26:38,288 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 0 states have call successors, (0), 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 74 [2021-11-02 22:26:38,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:26:38,511 INFO L225 Difference]: With dead ends: 130152 [2021-11-02 22:26:38,511 INFO L226 Difference]: Without dead ends: 86271 [2021-11-02 22:26:38,731 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-02 22:26:38,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86271 states. [2021-11-02 22:26:41,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86271 to 44181. [2021-11-02 22:26:41,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44181 states, 44175 states have (on average 1.8126089417091116) internal successors, (80072), 44180 states have internal predecessors, (80072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:26:41,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44181 states to 44181 states and 80072 transitions. [2021-11-02 22:26:41,790 INFO L78 Accepts]: Start accepts. Automaton has 44181 states and 80072 transitions. Word has length 74 [2021-11-02 22:26:41,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:26:41,790 INFO L470 AbstractCegarLoop]: Abstraction has 44181 states and 80072 transitions. [2021-11-02 22:26:41,791 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:26:41,791 INFO L276 IsEmpty]: Start isEmpty. Operand 44181 states and 80072 transitions. [2021-11-02 22:26:41,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-02 22:26:41,803 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:26:41,803 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:26:41,803 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-02 22:26:41,804 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-02 22:26:41,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:26:41,805 INFO L85 PathProgramCache]: Analyzing trace with hash 2057016890, now seen corresponding path program 2 times [2021-11-02 22:26:41,805 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:26:41,805 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243811814] [2021-11-02 22:26:41,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:26:41,806 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:26:41,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:26:41,883 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:26:41,884 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:26:41,884 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243811814] [2021-11-02 22:26:41,884 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [243811814] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:26:41,885 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:26:41,885 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-02 22:26:41,885 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503964836] [2021-11-02 22:26:41,888 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 22:26:41,888 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:26:41,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 22:26:41,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-02 22:26:41,889 INFO L87 Difference]: Start difference. First operand 44181 states and 80072 transitions. Second operand has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:26:44,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:26:44,010 INFO L93 Difference]: Finished difference Result 88411 states and 160194 transitions. [2021-11-02 22:26:44,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 22:26:44,011 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 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 74 [2021-11-02 22:26:44,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:26:44,114 INFO L225 Difference]: With dead ends: 88411 [2021-11-02 22:26:44,114 INFO L226 Difference]: Without dead ends: 44536 [2021-11-02 22:26:44,166 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-02 22:26:44,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44536 states. [2021-11-02 22:26:46,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44536 to 44181. [2021-11-02 22:26:46,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44181 states, 44175 states have (on average 1.809711375212224) internal successors, (79944), 44180 states have internal predecessors, (79944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:26:46,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44181 states to 44181 states and 79944 transitions. [2021-11-02 22:26:46,338 INFO L78 Accepts]: Start accepts. Automaton has 44181 states and 79944 transitions. Word has length 74 [2021-11-02 22:26:46,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:26:46,339 INFO L470 AbstractCegarLoop]: Abstraction has 44181 states and 79944 transitions. [2021-11-02 22:26:46,339 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:26:46,339 INFO L276 IsEmpty]: Start isEmpty. Operand 44181 states and 79944 transitions. [2021-11-02 22:26:46,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-02 22:26:46,350 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:26:46,351 INFO L513 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] [2021-11-02 22:26:46,351 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-02 22:26:46,351 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-02 22:26:46,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:26:46,352 INFO L85 PathProgramCache]: Analyzing trace with hash -931846099, now seen corresponding path program 1 times [2021-11-02 22:26:46,352 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:26:46,353 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486532156] [2021-11-02 22:26:46,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:26:46,353 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:26:46,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:26:46,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:26:46,437 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:26:46,437 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486532156] [2021-11-02 22:26:46,438 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [486532156] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:26:46,438 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:26:46,438 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 22:26:46,438 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408301534] [2021-11-02 22:26:46,440 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 22:26:46,440 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:26:46,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 22:26:46,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:26:46,441 INFO L87 Difference]: Start difference. First operand 44181 states and 79944 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:26:49,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:26:49,722 INFO L93 Difference]: Finished difference Result 124037 states and 224268 transitions. [2021-11-02 22:26:49,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:26:49,723 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 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 74 [2021-11-02 22:26:49,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:26:49,864 INFO L225 Difference]: With dead ends: 124037 [2021-11-02 22:26:49,864 INFO L226 Difference]: Without dead ends: 80122 [2021-11-02 22:26:49,906 INFO L786 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 [2021-11-02 22:26:49,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80122 states. [2021-11-02 22:26:53,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80122 to 79767. [2021-11-02 22:26:53,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79767 states, 79761 states have (on average 1.8047040533594112) internal successors, (143945), 79766 states have internal predecessors, (143945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:26:54,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79767 states to 79767 states and 143945 transitions. [2021-11-02 22:26:54,481 INFO L78 Accepts]: Start accepts. Automaton has 79767 states and 143945 transitions. Word has length 74 [2021-11-02 22:26:54,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:26:54,482 INFO L470 AbstractCegarLoop]: Abstraction has 79767 states and 143945 transitions. [2021-11-02 22:26:54,494 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:26:54,494 INFO L276 IsEmpty]: Start isEmpty. Operand 79767 states and 143945 transitions. [2021-11-02 22:26:54,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-02 22:26:54,511 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:26:54,512 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:26:54,512 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-02 22:26:54,512 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-02 22:26:54,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:26:54,513 INFO L85 PathProgramCache]: Analyzing trace with hash 744863668, now seen corresponding path program 1 times [2021-11-02 22:26:54,513 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:26:54,513 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213778817] [2021-11-02 22:26:54,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:26:54,514 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:26:54,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:26:54,651 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-02 22:26:54,651 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:26:54,652 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213778817] [2021-11-02 22:26:54,652 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1213778817] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:26:54,652 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:26:54,652 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-02 22:26:54,652 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226533380] [2021-11-02 22:26:54,653 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-02 22:26:54,653 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:26:54,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-02 22:26:54,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-11-02 22:26:54,654 INFO L87 Difference]: Start difference. First operand 79767 states and 143945 transitions. Second operand has 10 states, 10 states have (on average 6.9) internal successors, (69), 10 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:27:00,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:27:00,386 INFO L93 Difference]: Finished difference Result 82409 states and 148178 transitions. [2021-11-02 22:27:00,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-11-02 22:27:00,387 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.9) internal successors, (69), 10 states have internal predecessors, (69), 0 states have call successors, (0), 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 75 [2021-11-02 22:27:00,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:27:00,527 INFO L225 Difference]: With dead ends: 82409 [2021-11-02 22:27:00,527 INFO L226 Difference]: Without dead ends: 82115 [2021-11-02 22:27:00,543 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 205 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=290, Invalid=766, Unknown=0, NotChecked=0, Total=1056 [2021-11-02 22:27:00,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82115 states. [2021-11-02 22:27:04,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82115 to 80034. [2021-11-02 22:27:04,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80034 states, 80028 states have (on average 1.8039811066126856) internal successors, (144369), 80033 states have internal predecessors, (144369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:27:04,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80034 states to 80034 states and 144369 transitions. [2021-11-02 22:27:04,637 INFO L78 Accepts]: Start accepts. Automaton has 80034 states and 144369 transitions. Word has length 75 [2021-11-02 22:27:04,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:27:04,638 INFO L470 AbstractCegarLoop]: Abstraction has 80034 states and 144369 transitions. [2021-11-02 22:27:04,638 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.9) internal successors, (69), 10 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:27:04,638 INFO L276 IsEmpty]: Start isEmpty. Operand 80034 states and 144369 transitions. [2021-11-02 22:27:04,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-02 22:27:04,648 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:27:04,649 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:27:04,649 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-02 22:27:04,649 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-02 22:27:04,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:27:04,650 INFO L85 PathProgramCache]: Analyzing trace with hash 1864955073, now seen corresponding path program 1 times [2021-11-02 22:27:04,650 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:27:04,650 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141094806] [2021-11-02 22:27:04,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:27:04,650 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:27:04,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:27:04,740 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-02 22:27:04,741 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:27:04,741 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141094806] [2021-11-02 22:27:04,741 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [141094806] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:27:04,741 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:27:04,742 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-02 22:27:04,742 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215037040] [2021-11-02 22:27:04,742 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-02 22:27:04,742 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:27:04,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-02 22:27:04,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-02 22:27:04,744 INFO L87 Difference]: Start difference. First operand 80034 states and 144369 transitions. Second operand has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)