./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec27_product34.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_8fdf7da5-b333-420e-8a4f-22ea6f4f01c4/bin/uautomizer-tBqnrhUYjU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdf7da5-b333-420e-8a4f-22ea6f4f01c4/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_8fdf7da5-b333-420e-8a4f-22ea6f4f01c4/bin/uautomizer-tBqnrhUYjU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdf7da5-b333-420e-8a4f-22ea6f4f01c4/bin/uautomizer-tBqnrhUYjU/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec27_product34.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdf7da5-b333-420e-8a4f-22ea6f4f01c4/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_8fdf7da5-b333-420e-8a4f-22ea6f4f01c4/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 39fe77adb61a1e466f06fcf9920e7f42d562f22740249d3a797ea504e0f3c31a --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-02 23:16:25,392 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-02 23:16:25,396 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-02 23:16:25,451 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-02 23:16:25,452 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-02 23:16:25,457 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-02 23:16:25,459 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-02 23:16:25,464 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-02 23:16:25,466 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-02 23:16:25,472 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-02 23:16:25,474 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-02 23:16:25,476 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-02 23:16:25,477 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-02 23:16:25,480 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-02 23:16:25,483 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-02 23:16:25,489 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-02 23:16:25,491 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-02 23:16:25,492 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-02 23:16:25,495 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-02 23:16:25,504 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-02 23:16:25,507 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-02 23:16:25,509 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-02 23:16:25,513 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-02 23:16:25,514 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-02 23:16:25,526 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-02 23:16:25,526 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-02 23:16:25,527 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-02 23:16:25,529 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-02 23:16:25,530 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-02 23:16:25,532 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-02 23:16:25,533 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-02 23:16:25,534 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-02 23:16:25,537 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-02 23:16:25,538 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-02 23:16:25,541 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-02 23:16:25,541 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-02 23:16:25,542 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-02 23:16:25,543 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-02 23:16:25,543 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-02 23:16:25,544 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-02 23:16:25,545 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-02 23:16:25,550 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdf7da5-b333-420e-8a4f-22ea6f4f01c4/bin/uautomizer-tBqnrhUYjU/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-02 23:16:25,598 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-02 23:16:25,599 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-02 23:16:25,600 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-02 23:16:25,606 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-02 23:16:25,608 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-02 23:16:25,608 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-02 23:16:25,609 INFO L138 SettingsManager]: * Use SBE=true [2021-11-02 23:16:25,609 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-02 23:16:25,609 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-02 23:16:25,609 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-02 23:16:25,610 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-02 23:16:25,611 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-02 23:16:25,611 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-02 23:16:25,611 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-02 23:16:25,611 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-02 23:16:25,612 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-02 23:16:25,612 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-02 23:16:25,612 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-02 23:16:25,612 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-02 23:16:25,612 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-02 23:16:25,613 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-02 23:16:25,613 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-02 23:16:25,613 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 23:16:25,613 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-02 23:16:25,614 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-02 23:16:25,614 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-02 23:16:25,614 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-02 23:16:25,614 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-02 23:16:25,615 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-02 23:16:25,615 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-02 23:16:25,615 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-02 23:16:25,615 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-02 23:16:25,616 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_8fdf7da5-b333-420e-8a4f-22ea6f4f01c4/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdf7da5-b333-420e-8a4f-22ea6f4f01c4/bin/uautomizer-tBqnrhUYjU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 39fe77adb61a1e466f06fcf9920e7f42d562f22740249d3a797ea504e0f3c31a [2021-11-02 23:16:26,011 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-02 23:16:26,047 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-02 23:16:26,050 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-02 23:16:26,051 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-02 23:16:26,053 INFO L275 PluginConnector]: CDTParser initialized [2021-11-02 23:16:26,054 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdf7da5-b333-420e-8a4f-22ea6f4f01c4/bin/uautomizer-tBqnrhUYjU/../../sv-benchmarks/c/product-lines/email_spec27_product34.cil.c [2021-11-02 23:16:26,151 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdf7da5-b333-420e-8a4f-22ea6f4f01c4/bin/uautomizer-tBqnrhUYjU/data/2b81c839c/50eb8b1e8b724ebda995566b368cc981/FLAG54bd1f85b [2021-11-02 23:16:26,791 INFO L306 CDTParser]: Found 1 translation units. [2021-11-02 23:16:26,792 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdf7da5-b333-420e-8a4f-22ea6f4f01c4/sv-benchmarks/c/product-lines/email_spec27_product34.cil.c [2021-11-02 23:16:26,825 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdf7da5-b333-420e-8a4f-22ea6f4f01c4/bin/uautomizer-tBqnrhUYjU/data/2b81c839c/50eb8b1e8b724ebda995566b368cc981/FLAG54bd1f85b [2021-11-02 23:16:27,047 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdf7da5-b333-420e-8a4f-22ea6f4f01c4/bin/uautomizer-tBqnrhUYjU/data/2b81c839c/50eb8b1e8b724ebda995566b368cc981 [2021-11-02 23:16:27,050 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-02 23:16:27,053 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-02 23:16:27,057 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-02 23:16:27,057 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-02 23:16:27,062 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-02 23:16:27,063 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 11:16:27" (1/1) ... [2021-11-02 23:16:27,064 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c0a8ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:16:27, skipping insertion in model container [2021-11-02 23:16:27,065 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 11:16:27" (1/1) ... [2021-11-02 23:16:27,075 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-02 23:16:27,180 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-02 23:16:27,870 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_8fdf7da5-b333-420e-8a4f-22ea6f4f01c4/sv-benchmarks/c/product-lines/email_spec27_product34.cil.c[51595,51608] [2021-11-02 23:16:27,992 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 23:16:28,010 INFO L203 MainTranslator]: Completed pre-run [2021-11-02 23:16:28,134 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_8fdf7da5-b333-420e-8a4f-22ea6f4f01c4/sv-benchmarks/c/product-lines/email_spec27_product34.cil.c[51595,51608] [2021-11-02 23:16:28,169 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 23:16:28,212 INFO L208 MainTranslator]: Completed translation [2021-11-02 23:16:28,213 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:16:28 WrapperNode [2021-11-02 23:16:28,213 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-02 23:16:28,214 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-02 23:16:28,215 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-02 23:16:28,215 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-02 23:16:28,222 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:16:28" (1/1) ... [2021-11-02 23:16:28,266 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:16:28" (1/1) ... [2021-11-02 23:16:28,501 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-02 23:16:28,503 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-02 23:16:28,503 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-02 23:16:28,503 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-02 23:16:28,513 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:16:28" (1/1) ... [2021-11-02 23:16:28,514 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:16:28" (1/1) ... [2021-11-02 23:16:28,547 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:16:28" (1/1) ... [2021-11-02 23:16:28,547 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:16:28" (1/1) ... [2021-11-02 23:16:28,633 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:16:28" (1/1) ... [2021-11-02 23:16:28,681 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:16:28" (1/1) ... [2021-11-02 23:16:28,703 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:16:28" (1/1) ... [2021-11-02 23:16:28,748 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-02 23:16:28,749 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-02 23:16:28,749 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-02 23:16:28,751 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-02 23:16:28,752 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:16:28" (1/1) ... [2021-11-02 23:16:28,762 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 23:16:28,775 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdf7da5-b333-420e-8a4f-22ea6f4f01c4/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 23:16:28,792 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdf7da5-b333-420e-8a4f-22ea6f4f01c4/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-02 23:16:28,808 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdf7da5-b333-420e-8a4f-22ea6f4f01c4/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-02 23:16:28,846 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2021-11-02 23:16:28,846 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-02 23:16:28,846 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-02 23:16:28,846 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-02 23:16:28,847 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-02 23:16:32,885 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-02 23:16:32,886 INFO L299 CfgBuilder]: Removed 861 assume(true) statements. [2021-11-02 23:16:32,891 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 11:16:32 BoogieIcfgContainer [2021-11-02 23:16:32,891 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-02 23:16:32,894 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-02 23:16:32,894 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-02 23:16:32,898 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-02 23:16:32,898 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 11:16:27" (1/3) ... [2021-11-02 23:16:32,899 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@287038f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 11:16:32, skipping insertion in model container [2021-11-02 23:16:32,900 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:16:28" (2/3) ... [2021-11-02 23:16:32,900 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@287038f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 11:16:32, skipping insertion in model container [2021-11-02 23:16:32,900 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 11:16:32" (3/3) ... [2021-11-02 23:16:32,903 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec27_product34.cil.c [2021-11-02 23:16:32,909 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-02 23:16:32,910 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-11-02 23:16:32,998 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-02 23:16:33,008 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 23:16:33,009 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-11-02 23:16:33,061 INFO L276 IsEmpty]: Start isEmpty. Operand has 1320 states, 1313 states have (on average 1.7334348819497334) internal successors, (2276), 1319 states have internal predecessors, (2276), 0 states have call successors, (0), 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 23:16:33,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-02 23:16:33,088 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:16:33,089 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] [2021-11-02 23:16:33,090 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 23:16:33,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:16:33,095 INFO L85 PathProgramCache]: Analyzing trace with hash -1075894190, now seen corresponding path program 1 times [2021-11-02 23:16:33,102 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:16:33,102 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432126945] [2021-11-02 23:16:33,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:16:33,103 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:16:33,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:16:33,572 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 23:16:33,572 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:16:33,573 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432126945] [2021-11-02 23:16:33,574 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1432126945] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 23:16:33,574 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 23:16:33,574 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 23:16:33,576 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950391757] [2021-11-02 23:16:33,584 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 23:16:33,584 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:16:33,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 23:16:33,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 23:16:33,608 INFO L87 Difference]: Start difference. First operand has 1320 states, 1313 states have (on average 1.7334348819497334) internal successors, (2276), 1319 states have internal predecessors, (2276), 0 states have call successors, (0), 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 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 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 23:16:33,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:16:33,872 INFO L93 Difference]: Finished difference Result 3925 states and 6770 transitions. [2021-11-02 23:16:33,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 23:16:33,874 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 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 65 [2021-11-02 23:16:33,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:16:33,925 INFO L225 Difference]: With dead ends: 3925 [2021-11-02 23:16:33,925 INFO L226 Difference]: Without dead ends: 2436 [2021-11-02 23:16:33,938 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 23:16:33,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2436 states. [2021-11-02 23:16:34,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2436 to 1227. [2021-11-02 23:16:34,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1227 states, 1221 states have (on average 1.733824733824734) internal successors, (2117), 1226 states have internal predecessors, (2117), 0 states have call successors, (0), 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 23:16:34,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1227 states to 1227 states and 2117 transitions. [2021-11-02 23:16:34,120 INFO L78 Accepts]: Start accepts. Automaton has 1227 states and 2117 transitions. Word has length 65 [2021-11-02 23:16:34,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:16:34,121 INFO L470 AbstractCegarLoop]: Abstraction has 1227 states and 2117 transitions. [2021-11-02 23:16:34,121 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 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 23:16:34,122 INFO L276 IsEmpty]: Start isEmpty. Operand 1227 states and 2117 transitions. [2021-11-02 23:16:34,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-02 23:16:34,127 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:16:34,127 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] [2021-11-02 23:16:34,128 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-02 23:16:34,128 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 23:16:34,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:16:34,131 INFO L85 PathProgramCache]: Analyzing trace with hash -808374476, now seen corresponding path program 1 times [2021-11-02 23:16:34,132 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:16:34,132 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844207916] [2021-11-02 23:16:34,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:16:34,133 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:16:34,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:16:34,358 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 23:16:34,360 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:16:34,360 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844207916] [2021-11-02 23:16:34,361 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [844207916] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 23:16:34,361 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 23:16:34,361 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-02 23:16:34,362 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134164092] [2021-11-02 23:16:34,364 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 23:16:34,365 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:16:34,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 23:16:34,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-02 23:16:34,367 INFO L87 Difference]: Start difference. First operand 1227 states and 2117 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 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 23:16:34,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:16:34,718 INFO L93 Difference]: Finished difference Result 3630 states and 6267 transitions. [2021-11-02 23:16:34,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-02 23:16:34,719 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 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 67 [2021-11-02 23:16:34,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:16:34,741 INFO L225 Difference]: With dead ends: 3630 [2021-11-02 23:16:34,741 INFO L226 Difference]: Without dead ends: 2422 [2021-11-02 23:16:34,745 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 23:16:34,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2422 states. [2021-11-02 23:16:34,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2422 to 1227. [2021-11-02 23:16:34,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1227 states, 1221 states have (on average 1.733005733005733) internal successors, (2116), 1226 states have internal predecessors, (2116), 0 states have call successors, (0), 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 23:16:34,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1227 states to 1227 states and 2116 transitions. [2021-11-02 23:16:34,823 INFO L78 Accepts]: Start accepts. Automaton has 1227 states and 2116 transitions. Word has length 67 [2021-11-02 23:16:34,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:16:34,824 INFO L470 AbstractCegarLoop]: Abstraction has 1227 states and 2116 transitions. [2021-11-02 23:16:34,824 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 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 23:16:34,825 INFO L276 IsEmpty]: Start isEmpty. Operand 1227 states and 2116 transitions. [2021-11-02 23:16:34,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-02 23:16:34,828 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:16:34,828 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 23:16:34,830 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-02 23:16:34,830 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 23:16:34,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:16:34,842 INFO L85 PathProgramCache]: Analyzing trace with hash 1275157703, now seen corresponding path program 1 times [2021-11-02 23:16:34,843 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:16:34,843 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000587632] [2021-11-02 23:16:34,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:16:34,845 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:16:34,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:16:34,954 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 23:16:34,954 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:16:34,955 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000587632] [2021-11-02 23:16:34,955 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1000587632] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 23:16:34,955 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 23:16:34,955 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 23:16:34,956 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556470486] [2021-11-02 23:16:34,956 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 23:16:34,957 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:16:34,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 23:16:34,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 23:16:34,958 INFO L87 Difference]: Start difference. First operand 1227 states and 2116 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 23:16:35,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:16:35,035 INFO L93 Difference]: Finished difference Result 2436 states and 4206 transitions. [2021-11-02 23:16:35,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 23:16:35,036 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 23:16:35,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:16:35,045 INFO L225 Difference]: With dead ends: 2436 [2021-11-02 23:16:35,045 INFO L226 Difference]: Without dead ends: 1232 [2021-11-02 23:16:35,047 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 23:16:35,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1232 states. [2021-11-02 23:16:35,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1232 to 1227. [2021-11-02 23:16:35,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1227 states, 1221 states have (on average 1.7305487305487306) internal successors, (2113), 1226 states have internal predecessors, (2113), 0 states have call successors, (0), 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 23:16:35,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1227 states to 1227 states and 2113 transitions. [2021-11-02 23:16:35,107 INFO L78 Accepts]: Start accepts. Automaton has 1227 states and 2113 transitions. Word has length 68 [2021-11-02 23:16:35,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:16:35,108 INFO L470 AbstractCegarLoop]: Abstraction has 1227 states and 2113 transitions. [2021-11-02 23:16:35,108 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 23:16:35,108 INFO L276 IsEmpty]: Start isEmpty. Operand 1227 states and 2113 transitions. [2021-11-02 23:16:35,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-02 23:16:35,111 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:16:35,111 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 23:16:35,111 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-02 23:16:35,112 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 23:16:35,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:16:35,113 INFO L85 PathProgramCache]: Analyzing trace with hash 1695941516, now seen corresponding path program 1 times [2021-11-02 23:16:35,113 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:16:35,113 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81682431] [2021-11-02 23:16:35,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:16:35,114 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:16:35,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:16:35,213 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 23:16:35,213 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:16:35,214 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81682431] [2021-11-02 23:16:35,214 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [81682431] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 23:16:35,214 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 23:16:35,214 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-02 23:16:35,215 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984214826] [2021-11-02 23:16:35,215 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 23:16:35,216 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:16:35,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 23:16:35,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-02 23:16:35,217 INFO L87 Difference]: Start difference. First operand 1227 states and 2113 transitions. Second operand has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 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 23:16:35,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:16:35,530 INFO L93 Difference]: Finished difference Result 3620 states and 6247 transitions. [2021-11-02 23:16:35,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 23:16:35,531 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 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 23:16:35,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:16:35,549 INFO L225 Difference]: With dead ends: 3620 [2021-11-02 23:16:35,550 INFO L226 Difference]: Without dead ends: 2420 [2021-11-02 23:16:35,552 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 23:16:35,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2420 states. [2021-11-02 23:16:35,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2420 to 1227. [2021-11-02 23:16:35,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1227 states, 1221 states have (on average 1.7297297297297298) internal successors, (2112), 1226 states have internal predecessors, (2112), 0 states have call successors, (0), 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 23:16:35,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1227 states to 1227 states and 2112 transitions. [2021-11-02 23:16:35,632 INFO L78 Accepts]: Start accepts. Automaton has 1227 states and 2112 transitions. Word has length 70 [2021-11-02 23:16:35,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:16:35,632 INFO L470 AbstractCegarLoop]: Abstraction has 1227 states and 2112 transitions. [2021-11-02 23:16:35,632 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 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 23:16:35,633 INFO L276 IsEmpty]: Start isEmpty. Operand 1227 states and 2112 transitions. [2021-11-02 23:16:35,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-02 23:16:35,635 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:16:35,635 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 23:16:35,636 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-02 23:16:35,636 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 23:16:35,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:16:35,637 INFO L85 PathProgramCache]: Analyzing trace with hash 2088387593, now seen corresponding path program 1 times [2021-11-02 23:16:35,637 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:16:35,637 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042171594] [2021-11-02 23:16:35,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:16:35,638 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:16:35,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:16:35,758 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 23:16:35,758 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:16:35,759 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042171594] [2021-11-02 23:16:35,759 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2042171594] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 23:16:35,759 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 23:16:35,759 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-02 23:16:35,760 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762257877] [2021-11-02 23:16:35,760 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 23:16:35,761 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:16:35,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 23:16:35,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-02 23:16:35,762 INFO L87 Difference]: Start difference. First operand 1227 states and 2112 transitions. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 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 23:16:36,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:16:36,058 INFO L93 Difference]: Finished difference Result 3625 states and 6251 transitions. [2021-11-02 23:16:36,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 23:16:36,059 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 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 23:16:36,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:16:36,075 INFO L225 Difference]: With dead ends: 3625 [2021-11-02 23:16:36,075 INFO L226 Difference]: Without dead ends: 2425 [2021-11-02 23:16:36,079 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 23:16:36,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2425 states. [2021-11-02 23:16:36,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2425 to 1227. [2021-11-02 23:16:36,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1227 states, 1221 states have (on average 1.7289107289107288) internal successors, (2111), 1226 states have internal predecessors, (2111), 0 states have call successors, (0), 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 23:16:36,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1227 states to 1227 states and 2111 transitions. [2021-11-02 23:16:36,225 INFO L78 Accepts]: Start accepts. Automaton has 1227 states and 2111 transitions. Word has length 71 [2021-11-02 23:16:36,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:16:36,225 INFO L470 AbstractCegarLoop]: Abstraction has 1227 states and 2111 transitions. [2021-11-02 23:16:36,226 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 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 23:16:36,226 INFO L276 IsEmpty]: Start isEmpty. Operand 1227 states and 2111 transitions. [2021-11-02 23:16:36,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-02 23:16:36,228 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:16:36,228 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 23:16:36,229 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-02 23:16:36,229 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 23:16:36,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:16:36,230 INFO L85 PathProgramCache]: Analyzing trace with hash -1554667535, now seen corresponding path program 1 times [2021-11-02 23:16:36,230 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:16:36,230 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464671955] [2021-11-02 23:16:36,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:16:36,231 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:16:36,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:16:36,373 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 23:16:36,374 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:16:36,374 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464671955] [2021-11-02 23:16:36,374 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [464671955] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 23:16:36,375 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 23:16:36,375 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 23:16:36,376 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16593509] [2021-11-02 23:16:36,380 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 23:16:36,380 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:16:36,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 23:16:36,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 23:16:36,381 INFO L87 Difference]: Start difference. First operand 1227 states and 2111 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 23:16:36,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:16:36,483 INFO L93 Difference]: Finished difference Result 2173 states and 3716 transitions. [2021-11-02 23:16:36,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 23:16:36,484 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 23:16:36,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:16:36,500 INFO L225 Difference]: With dead ends: 2173 [2021-11-02 23:16:36,501 INFO L226 Difference]: Without dead ends: 1230 [2021-11-02 23:16:36,503 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 23:16:36,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1230 states. [2021-11-02 23:16:36,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1230 to 1229. [2021-11-02 23:16:36,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1229 states, 1223 states have (on average 1.7277187244480785) internal successors, (2113), 1228 states have internal predecessors, (2113), 0 states have call successors, (0), 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 23:16:36,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1229 states to 1229 states and 2113 transitions. [2021-11-02 23:16:36,597 INFO L78 Accepts]: Start accepts. Automaton has 1229 states and 2113 transitions. Word has length 72 [2021-11-02 23:16:36,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:16:36,598 INFO L470 AbstractCegarLoop]: Abstraction has 1229 states and 2113 transitions. [2021-11-02 23:16:36,598 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 23:16:36,599 INFO L276 IsEmpty]: Start isEmpty. Operand 1229 states and 2113 transitions. [2021-11-02 23:16:36,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-02 23:16:36,607 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:16:36,608 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 23:16:36,608 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-02 23:16:36,608 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 23:16:36,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:16:36,609 INFO L85 PathProgramCache]: Analyzing trace with hash 1320276147, now seen corresponding path program 1 times [2021-11-02 23:16:36,609 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:16:36,615 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642842622] [2021-11-02 23:16:36,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:16:36,615 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:16:36,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:16:36,727 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 23:16:36,728 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:16:36,729 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642842622] [2021-11-02 23:16:36,729 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1642842622] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 23:16:36,729 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 23:16:36,729 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 23:16:36,729 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843365667] [2021-11-02 23:16:36,730 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 23:16:36,730 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:16:36,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 23:16:36,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 23:16:36,731 INFO L87 Difference]: Start difference. First operand 1229 states and 2113 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 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 23:16:36,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:16:36,899 INFO L93 Difference]: Finished difference Result 3573 states and 6163 transitions. [2021-11-02 23:16:36,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 23:16:36,900 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 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 78 [2021-11-02 23:16:36,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:16:36,918 INFO L225 Difference]: With dead ends: 3573 [2021-11-02 23:16:36,919 INFO L226 Difference]: Without dead ends: 2375 [2021-11-02 23:16:36,922 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 23:16:36,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2375 states. [2021-11-02 23:16:37,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2375 to 1432. [2021-11-02 23:16:37,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1432 states, 1426 states have (on average 1.7447405329593269) internal successors, (2488), 1431 states have internal predecessors, (2488), 0 states have call successors, (0), 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 23:16:37,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1432 states to 1432 states and 2488 transitions. [2021-11-02 23:16:37,024 INFO L78 Accepts]: Start accepts. Automaton has 1432 states and 2488 transitions. Word has length 78 [2021-11-02 23:16:37,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:16:37,026 INFO L470 AbstractCegarLoop]: Abstraction has 1432 states and 2488 transitions. [2021-11-02 23:16:37,026 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 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 23:16:37,026 INFO L276 IsEmpty]: Start isEmpty. Operand 1432 states and 2488 transitions. [2021-11-02 23:16:37,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-02 23:16:37,029 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:16:37,029 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 23:16:37,029 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-02 23:16:37,030 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 23:16:37,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:16:37,030 INFO L85 PathProgramCache]: Analyzing trace with hash -1641768204, now seen corresponding path program 1 times [2021-11-02 23:16:37,030 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:16:37,031 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424855879] [2021-11-02 23:16:37,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:16:37,031 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:16:37,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:16:37,176 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 23:16:37,176 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:16:37,176 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424855879] [2021-11-02 23:16:37,177 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424855879] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:16:37,177 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1541791799] [2021-11-02 23:16:37,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:16:37,177 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 23:16:37,178 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdf7da5-b333-420e-8a4f-22ea6f4f01c4/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 23:16:37,179 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdf7da5-b333-420e-8a4f-22ea6f4f01c4/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 23:16:37,204 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdf7da5-b333-420e-8a4f-22ea6f4f01c4/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-02 23:16:37,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:16:37,545 INFO L263 TraceCheckSpWp]: Trace formula consists of 1057 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-02 23:16:37,556 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 23:16:37,927 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 23:16:37,927 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1541791799] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:16:37,927 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 23:16:37,927 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2021-11-02 23:16:37,928 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173355838] [2021-11-02 23:16:37,928 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 23:16:37,928 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:16:37,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 23:16:37,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-02 23:16:37,929 INFO L87 Difference]: Start difference. First operand 1432 states and 2488 transitions. Second operand has 5 states, 5 states have (on average 16.6) internal successors, (83), 5 states have internal predecessors, (83), 0 states have call successors, (0), 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 23:16:38,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:16:38,176 INFO L93 Difference]: Finished difference Result 3577 states and 6166 transitions. [2021-11-02 23:16:38,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-02 23:16:38,177 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 5 states have internal predecessors, (83), 0 states have call successors, (0), 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 79 [2021-11-02 23:16:38,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:16:38,193 INFO L225 Difference]: With dead ends: 3577 [2021-11-02 23:16:38,193 INFO L226 Difference]: Without dead ends: 2634 [2021-11-02 23:16:38,212 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 79 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 23:16:38,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2634 states. [2021-11-02 23:16:38,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2634 to 1689. [2021-11-02 23:16:38,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1689 states, 1683 states have (on average 1.7587641117052881) internal successors, (2960), 1688 states have internal predecessors, (2960), 0 states have call successors, (0), 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 23:16:38,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1689 states to 1689 states and 2960 transitions. [2021-11-02 23:16:38,349 INFO L78 Accepts]: Start accepts. Automaton has 1689 states and 2960 transitions. Word has length 79 [2021-11-02 23:16:38,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:16:38,349 INFO L470 AbstractCegarLoop]: Abstraction has 1689 states and 2960 transitions. [2021-11-02 23:16:38,349 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 5 states have internal predecessors, (83), 0 states have call successors, (0), 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 23:16:38,350 INFO L276 IsEmpty]: Start isEmpty. Operand 1689 states and 2960 transitions. [2021-11-02 23:16:38,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-02 23:16:38,353 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:16:38,354 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 23:16:38,398 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdf7da5-b333-420e-8a4f-22ea6f4f01c4/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-02 23:16:38,574 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdf7da5-b333-420e-8a4f-22ea6f4f01c4/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 23:16:38,575 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 23:16:38,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:16:38,576 INFO L85 PathProgramCache]: Analyzing trace with hash -256662655, now seen corresponding path program 1 times [2021-11-02 23:16:38,576 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:16:38,576 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750835618] [2021-11-02 23:16:38,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:16:38,576 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:16:38,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:16:38,669 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 23:16:38,669 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:16:38,669 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750835618] [2021-11-02 23:16:38,670 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1750835618] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 23:16:38,670 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 23:16:38,670 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 23:16:38,670 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2567509] [2021-11-02 23:16:38,671 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 23:16:38,671 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:16:38,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 23:16:38,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 23:16:38,672 INFO L87 Difference]: Start difference. First operand 1689 states and 2960 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 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 23:16:38,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:16:38,860 INFO L93 Difference]: Finished difference Result 4690 states and 8222 transitions. [2021-11-02 23:16:38,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 23:16:38,861 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 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 85 [2021-11-02 23:16:38,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:16:38,882 INFO L225 Difference]: With dead ends: 4690 [2021-11-02 23:16:38,882 INFO L226 Difference]: Without dead ends: 3090 [2021-11-02 23:16:38,886 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 23:16:38,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3090 states. [2021-11-02 23:16:39,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3090 to 2147. [2021-11-02 23:16:39,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2147 states, 2141 states have (on average 1.7758056982718355) internal successors, (3802), 2146 states have internal predecessors, (3802), 0 states have call successors, (0), 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 23:16:39,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2147 states to 2147 states and 3802 transitions. [2021-11-02 23:16:39,111 INFO L78 Accepts]: Start accepts. Automaton has 2147 states and 3802 transitions. Word has length 85 [2021-11-02 23:16:39,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:16:39,111 INFO L470 AbstractCegarLoop]: Abstraction has 2147 states and 3802 transitions. [2021-11-02 23:16:39,112 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 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 23:16:39,112 INFO L276 IsEmpty]: Start isEmpty. Operand 2147 states and 3802 transitions. [2021-11-02 23:16:39,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-11-02 23:16:39,117 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:16:39,117 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 23:16:39,118 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-02 23:16:39,118 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 23:16:39,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:16:39,119 INFO L85 PathProgramCache]: Analyzing trace with hash 1959906961, now seen corresponding path program 2 times [2021-11-02 23:16:39,119 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:16:39,119 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512261690] [2021-11-02 23:16:39,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:16:39,120 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:16:39,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:16:39,219 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:16:39,219 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:16:39,219 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512261690] [2021-11-02 23:16:39,220 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1512261690] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 23:16:39,222 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 23:16:39,222 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-02 23:16:39,223 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10951130] [2021-11-02 23:16:39,227 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 23:16:39,227 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:16:39,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 23:16:39,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-02 23:16:39,228 INFO L87 Difference]: Start difference. First operand 2147 states and 3802 transitions. Second operand has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:16:39,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:16:39,468 INFO L93 Difference]: Finished difference Result 4947 states and 8692 transitions. [2021-11-02 23:16:39,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 23:16:39,469 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2021-11-02 23:16:39,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:16:39,505 INFO L225 Difference]: With dead ends: 4947 [2021-11-02 23:16:39,505 INFO L226 Difference]: Without dead ends: 3090 [2021-11-02 23:16:39,509 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 23:16:39,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3090 states. [2021-11-02 23:16:39,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3090 to 2147. [2021-11-02 23:16:39,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2147 states, 2141 states have (on average 1.7748715553479681) internal successors, (3800), 2146 states have internal predecessors, (3800), 0 states have call successors, (0), 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 23:16:39,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2147 states to 2147 states and 3800 transitions. [2021-11-02 23:16:39,671 INFO L78 Accepts]: Start accepts. Automaton has 2147 states and 3800 transitions. Word has length 86 [2021-11-02 23:16:39,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:16:39,672 INFO L470 AbstractCegarLoop]: Abstraction has 2147 states and 3800 transitions. [2021-11-02 23:16:39,672 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:16:39,672 INFO L276 IsEmpty]: Start isEmpty. Operand 2147 states and 3800 transitions. [2021-11-02 23:16:39,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-11-02 23:16:39,677 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:16:39,677 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 23:16:39,677 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-02 23:16:39,678 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 23:16:39,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:16:39,678 INFO L85 PathProgramCache]: Analyzing trace with hash 1403890322, now seen corresponding path program 1 times [2021-11-02 23:16:39,678 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:16:39,678 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768375308] [2021-11-02 23:16:39,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:16:39,679 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:16:39,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:16:39,757 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 23:16:39,757 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:16:39,758 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768375308] [2021-11-02 23:16:39,758 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [768375308] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 23:16:39,758 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 23:16:39,758 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 23:16:39,758 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115995375] [2021-11-02 23:16:39,759 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 23:16:39,759 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:16:39,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 23:16:39,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 23:16:39,760 INFO L87 Difference]: Start difference. First operand 2147 states and 3800 transitions. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:16:40,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:16:40,039 INFO L93 Difference]: Finished difference Result 6036 states and 10697 transitions. [2021-11-02 23:16:40,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 23:16:40,040 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2021-11-02 23:16:40,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:16:40,052 INFO L225 Difference]: With dead ends: 6036 [2021-11-02 23:16:40,052 INFO L226 Difference]: Without dead ends: 3986 [2021-11-02 23:16:40,055 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 23:16:40,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3986 states. [2021-11-02 23:16:40,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3986 to 3043. [2021-11-02 23:16:40,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3043 states, 3037 states have (on average 1.793546262759302) internal successors, (5447), 3042 states have internal predecessors, (5447), 0 states have call successors, (0), 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 23:16:40,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3043 states to 3043 states and 5447 transitions. [2021-11-02 23:16:40,257 INFO L78 Accepts]: Start accepts. Automaton has 3043 states and 5447 transitions. Word has length 86 [2021-11-02 23:16:40,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:16:40,259 INFO L470 AbstractCegarLoop]: Abstraction has 3043 states and 5447 transitions. [2021-11-02 23:16:40,259 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:16:40,259 INFO L276 IsEmpty]: Start isEmpty. Operand 3043 states and 5447 transitions. [2021-11-02 23:16:40,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-02 23:16:40,267 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:16:40,267 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 23:16:40,267 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-02 23:16:40,267 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 23:16:40,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:16:40,268 INFO L85 PathProgramCache]: Analyzing trace with hash 152310271, now seen corresponding path program 1 times [2021-11-02 23:16:40,268 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:16:40,268 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521485345] [2021-11-02 23:16:40,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:16:40,269 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:16:40,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:16:40,355 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 23:16:40,355 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:16:40,355 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521485345] [2021-11-02 23:16:40,355 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1521485345] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 23:16:40,356 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 23:16:40,356 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 23:16:40,356 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874711443] [2021-11-02 23:16:40,356 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 23:16:40,357 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:16:40,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 23:16:40,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 23:16:40,359 INFO L87 Difference]: Start difference. First operand 3043 states and 5447 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 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 23:16:40,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:16:40,655 INFO L93 Difference]: Finished difference Result 8460 states and 15157 transitions. [2021-11-02 23:16:40,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 23:16:40,656 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 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 87 [2021-11-02 23:16:40,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:16:40,671 INFO L225 Difference]: With dead ends: 8460 [2021-11-02 23:16:40,671 INFO L226 Difference]: Without dead ends: 5548 [2021-11-02 23:16:40,678 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 23:16:40,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5548 states. [2021-11-02 23:16:41,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5548 to 4605. [2021-11-02 23:16:41,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4605 states, 4599 states have (on average 1.8082191780821917) internal successors, (8316), 4604 states have internal predecessors, (8316), 0 states have call successors, (0), 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 23:16:41,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4605 states to 4605 states and 8316 transitions. [2021-11-02 23:16:41,075 INFO L78 Accepts]: Start accepts. Automaton has 4605 states and 8316 transitions. Word has length 87 [2021-11-02 23:16:41,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:16:41,076 INFO L470 AbstractCegarLoop]: Abstraction has 4605 states and 8316 transitions. [2021-11-02 23:16:41,077 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 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 23:16:41,077 INFO L276 IsEmpty]: Start isEmpty. Operand 4605 states and 8316 transitions. [2021-11-02 23:16:41,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-11-02 23:16:41,090 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:16:41,091 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 23:16:41,091 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-02 23:16:41,091 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 23:16:41,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:16:41,093 INFO L85 PathProgramCache]: Analyzing trace with hash -198103391, now seen corresponding path program 1 times [2021-11-02 23:16:41,093 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:16:41,093 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406288358] [2021-11-02 23:16:41,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:16:41,094 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:16:41,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:16:41,191 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 23:16:41,192 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:16:41,192 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406288358] [2021-11-02 23:16:41,192 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [406288358] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 23:16:41,193 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 23:16:41,193 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 23:16:41,193 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265194737] [2021-11-02 23:16:41,194 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 23:16:41,194 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:16:41,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 23:16:41,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 23:16:41,195 INFO L87 Difference]: Start difference. First operand 4605 states and 8316 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 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 23:16:41,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:16:41,680 INFO L93 Difference]: Finished difference Result 12862 states and 23247 transitions. [2021-11-02 23:16:41,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 23:16:41,680 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 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 88 [2021-11-02 23:16:41,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:16:41,707 INFO L225 Difference]: With dead ends: 12862 [2021-11-02 23:16:41,708 INFO L226 Difference]: Without dead ends: 8422 [2021-11-02 23:16:41,717 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 23:16:41,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8422 states. [2021-11-02 23:16:42,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8422 to 7479. [2021-11-02 23:16:42,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7479 states, 7473 states have (on average 1.8184129532985414) internal successors, (13589), 7478 states have internal predecessors, (13589), 0 states have call successors, (0), 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 23:16:42,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7479 states to 7479 states and 13589 transitions. [2021-11-02 23:16:42,206 INFO L78 Accepts]: Start accepts. Automaton has 7479 states and 13589 transitions. Word has length 88 [2021-11-02 23:16:42,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:16:42,206 INFO L470 AbstractCegarLoop]: Abstraction has 7479 states and 13589 transitions. [2021-11-02 23:16:42,207 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 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 23:16:42,207 INFO L276 IsEmpty]: Start isEmpty. Operand 7479 states and 13589 transitions. [2021-11-02 23:16:42,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-11-02 23:16:42,223 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:16:42,224 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 23:16:42,224 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-02 23:16:42,224 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 23:16:42,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:16:42,225 INFO L85 PathProgramCache]: Analyzing trace with hash 272633277, now seen corresponding path program 1 times [2021-11-02 23:16:42,225 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:16:42,225 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059180072] [2021-11-02 23:16:42,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:16:42,226 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:16:42,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:16:42,342 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 23:16:42,343 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:16:42,343 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059180072] [2021-11-02 23:16:42,343 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059180072] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 23:16:42,343 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 23:16:42,344 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-02 23:16:42,344 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558902985] [2021-11-02 23:16:42,345 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 23:16:42,345 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:16:42,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 23:16:42,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-02 23:16:42,346 INFO L87 Difference]: Start difference. First operand 7479 states and 13589 transitions. Second operand has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 0 states have call successors, (0), 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 23:16:43,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:16:43,369 INFO L93 Difference]: Finished difference Result 21570 states and 39220 transitions. [2021-11-02 23:16:43,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-02 23:16:43,370 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 0 states have call successors, (0), 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 89 [2021-11-02 23:16:43,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:16:43,500 INFO L225 Difference]: With dead ends: 21570 [2021-11-02 23:16:43,505 INFO L226 Difference]: Without dead ends: 14381 [2021-11-02 23:16:43,516 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 23:16:43,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14381 states. [2021-11-02 23:16:43,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14381 to 7479. [2021-11-02 23:16:43,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7479 states, 7473 states have (on average 1.811722199919711) internal successors, (13539), 7478 states have internal predecessors, (13539), 0 states have call successors, (0), 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 23:16:43,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7479 states to 7479 states and 13539 transitions. [2021-11-02 23:16:43,997 INFO L78 Accepts]: Start accepts. Automaton has 7479 states and 13539 transitions. Word has length 89 [2021-11-02 23:16:43,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:16:43,997 INFO L470 AbstractCegarLoop]: Abstraction has 7479 states and 13539 transitions. [2021-11-02 23:16:43,998 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 0 states have call successors, (0), 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 23:16:43,998 INFO L276 IsEmpty]: Start isEmpty. Operand 7479 states and 13539 transitions. [2021-11-02 23:16:44,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-11-02 23:16:44,012 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:16:44,012 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 23:16:44,012 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-02 23:16:44,013 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 23:16:44,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:16:44,013 INFO L85 PathProgramCache]: Analyzing trace with hash 791608302, now seen corresponding path program 1 times [2021-11-02 23:16:44,013 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:16:44,014 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435132096] [2021-11-02 23:16:44,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:16:44,014 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:16:44,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:16:44,077 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 23:16:44,077 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:16:44,078 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435132096] [2021-11-02 23:16:44,078 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1435132096] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 23:16:44,078 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 23:16:44,078 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 23:16:44,078 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834654092] [2021-11-02 23:16:44,079 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 23:16:44,079 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:16:44,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 23:16:44,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 23:16:44,080 INFO L87 Difference]: Start difference. First operand 7479 states and 13539 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 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 23:16:44,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:16:44,823 INFO L93 Difference]: Finished difference Result 21810 states and 39530 transitions. [2021-11-02 23:16:44,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 23:16:44,824 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 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 89 [2021-11-02 23:16:44,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:16:44,870 INFO L225 Difference]: With dead ends: 21810 [2021-11-02 23:16:44,870 INFO L226 Difference]: Without dead ends: 14504 [2021-11-02 23:16:44,884 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 23:16:44,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14504 states. [2021-11-02 23:16:45,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14504 to 13561. [2021-11-02 23:16:45,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13561 states, 13555 states have (on average 1.818074511250461) internal successors, (24644), 13560 states have internal predecessors, (24644), 0 states have call successors, (0), 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 23:16:45,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13561 states to 13561 states and 24644 transitions. [2021-11-02 23:16:45,806 INFO L78 Accepts]: Start accepts. Automaton has 13561 states and 24644 transitions. Word has length 89 [2021-11-02 23:16:45,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:16:45,806 INFO L470 AbstractCegarLoop]: Abstraction has 13561 states and 24644 transitions. [2021-11-02 23:16:45,807 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 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 23:16:45,807 INFO L276 IsEmpty]: Start isEmpty. Operand 13561 states and 24644 transitions. [2021-11-02 23:16:45,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-11-02 23:16:45,834 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:16:45,835 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 23:16:45,835 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-02 23:16:45,835 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 23:16:45,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:16:45,836 INFO L85 PathProgramCache]: Analyzing trace with hash 1014238242, now seen corresponding path program 1 times [2021-11-02 23:16:45,836 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:16:45,836 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113859080] [2021-11-02 23:16:45,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:16:45,837 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:16:45,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:16:45,966 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 23:16:45,966 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:16:45,966 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113859080] [2021-11-02 23:16:45,966 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2113859080] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 23:16:45,967 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 23:16:45,967 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-02 23:16:45,967 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826124768] [2021-11-02 23:16:45,968 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-02 23:16:45,968 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:16:45,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-02 23:16:45,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-02 23:16:45,969 INFO L87 Difference]: Start difference. First operand 13561 states and 24644 transitions. Second operand has 6 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 0 states have call successors, (0), 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 23:16:48,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:16:48,193 INFO L93 Difference]: Finished difference Result 30414 states and 54844 transitions. [2021-11-02 23:16:48,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-02 23:16:48,194 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 0 states have call successors, (0), 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 90 [2021-11-02 23:16:48,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:16:48,294 INFO L225 Difference]: With dead ends: 30414 [2021-11-02 23:16:48,295 INFO L226 Difference]: Without dead ends: 29489 [2021-11-02 23:16:48,305 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-02 23:16:48,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29489 states. [2021-11-02 23:16:49,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29489 to 26688. [2021-11-02 23:16:49,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26688 states, 26682 states have (on average 1.8196536991230043) internal successors, (48552), 26687 states have internal predecessors, (48552), 0 states have call successors, (0), 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 23:16:49,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26688 states to 26688 states and 48552 transitions. [2021-11-02 23:16:49,861 INFO L78 Accepts]: Start accepts. Automaton has 26688 states and 48552 transitions. Word has length 90 [2021-11-02 23:16:49,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:16:49,862 INFO L470 AbstractCegarLoop]: Abstraction has 26688 states and 48552 transitions. [2021-11-02 23:16:49,862 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 0 states have call successors, (0), 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 23:16:49,862 INFO L276 IsEmpty]: Start isEmpty. Operand 26688 states and 48552 transitions. [2021-11-02 23:16:49,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-11-02 23:16:49,913 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:16:49,913 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 23:16:49,913 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-02 23:16:49,914 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 23:16:49,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:16:49,914 INFO L85 PathProgramCache]: Analyzing trace with hash 1248847250, now seen corresponding path program 1 times [2021-11-02 23:16:49,915 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:16:49,915 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382157141] [2021-11-02 23:16:49,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:16:49,915 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:16:49,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:16:50,026 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 23:16:50,026 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:16:50,027 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382157141] [2021-11-02 23:16:50,027 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1382157141] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 23:16:50,027 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 23:16:50,027 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-02 23:16:50,028 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571592566] [2021-11-02 23:16:50,028 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 23:16:50,029 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:16:50,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 23:16:50,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-02 23:16:50,030 INFO L87 Difference]: Start difference. First operand 26688 states and 48552 transitions. Second operand has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 0 states have call successors, (0), 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 23:16:51,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:16:51,660 INFO L93 Difference]: Finished difference Result 29347 states and 53049 transitions. [2021-11-02 23:16:51,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 23:16:51,661 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 0 states have call successors, (0), 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 91 [2021-11-02 23:16:51,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:16:51,750 INFO L225 Difference]: With dead ends: 29347 [2021-11-02 23:16:51,751 INFO L226 Difference]: Without dead ends: 27903 [2021-11-02 23:16:51,758 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 23:16:51,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27903 states. [2021-11-02 23:16:53,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27903 to 26682. [2021-11-02 23:16:53,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26682 states, 26676 states have (on average 1.819575648523017) internal successors, (48539), 26681 states have internal predecessors, (48539), 0 states have call successors, (0), 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 23:16:53,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26682 states to 26682 states and 48539 transitions. [2021-11-02 23:16:53,190 INFO L78 Accepts]: Start accepts. Automaton has 26682 states and 48539 transitions. Word has length 91 [2021-11-02 23:16:53,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:16:53,191 INFO L470 AbstractCegarLoop]: Abstraction has 26682 states and 48539 transitions. [2021-11-02 23:16:53,191 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 0 states have call successors, (0), 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 23:16:53,191 INFO L276 IsEmpty]: Start isEmpty. Operand 26682 states and 48539 transitions. [2021-11-02 23:16:53,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-11-02 23:16:53,272 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:16:53,272 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 23:16:53,272 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-02 23:16:53,273 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 23:16:53,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:16:53,273 INFO L85 PathProgramCache]: Analyzing trace with hash -1379454449, now seen corresponding path program 1 times [2021-11-02 23:16:53,274 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:16:53,274 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132059790] [2021-11-02 23:16:53,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:16:53,274 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:16:53,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:16:53,351 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 23:16:53,352 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:16:53,352 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132059790] [2021-11-02 23:16:53,353 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [132059790] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 23:16:53,353 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 23:16:53,353 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 23:16:53,353 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243114767] [2021-11-02 23:16:53,356 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 23:16:53,356 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:16:53,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 23:16:53,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 23:16:53,360 INFO L87 Difference]: Start difference. First operand 26682 states and 48539 transitions. Second operand has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 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 23:16:54,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:16:54,956 INFO L93 Difference]: Finished difference Result 52631 states and 95830 transitions. [2021-11-02 23:16:54,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-02 23:16:54,956 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 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 91 [2021-11-02 23:16:54,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:16:55,042 INFO L225 Difference]: With dead ends: 52631 [2021-11-02 23:16:55,042 INFO L226 Difference]: Without dead ends: 39082 [2021-11-02 23:16:55,065 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-02 23:16:55,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39082 states. [2021-11-02 23:16:56,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39082 to 26397. [2021-11-02 23:16:56,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26397 states, 26391 states have (on average 1.8203175324921375) internal successors, (48040), 26396 states have internal predecessors, (48040), 0 states have call successors, (0), 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 23:16:56,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26397 states to 26397 states and 48040 transitions. [2021-11-02 23:16:56,442 INFO L78 Accepts]: Start accepts. Automaton has 26397 states and 48040 transitions. Word has length 91 [2021-11-02 23:16:56,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:16:56,442 INFO L470 AbstractCegarLoop]: Abstraction has 26397 states and 48040 transitions. [2021-11-02 23:16:56,442 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 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 23:16:56,443 INFO L276 IsEmpty]: Start isEmpty. Operand 26397 states and 48040 transitions. [2021-11-02 23:16:56,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-02 23:16:56,463 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:16:56,463 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 23:16:56,463 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-02 23:16:56,464 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 23:16:56,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:16:56,464 INFO L85 PathProgramCache]: Analyzing trace with hash 1039890052, now seen corresponding path program 1 times [2021-11-02 23:16:56,465 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:16:56,465 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535421008] [2021-11-02 23:16:56,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:16:56,465 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:16:56,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:16:56,606 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 23:16:56,607 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:16:56,607 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535421008] [2021-11-02 23:16:56,607 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1535421008] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 23:16:56,607 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 23:16:56,607 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-02 23:16:56,608 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472301488] [2021-11-02 23:16:56,609 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-02 23:16:56,609 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:16:56,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-02 23:16:56,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-11-02 23:16:56,610 INFO L87 Difference]: Start difference. First operand 26397 states and 48040 transitions. Second operand has 9 states, 9 states have (on average 9.666666666666666) internal successors, (87), 8 states have internal predecessors, (87), 0 states have call successors, (0), 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 23:17:01,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:17:01,902 INFO L93 Difference]: Finished difference Result 62082 states and 111489 transitions. [2021-11-02 23:17:01,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-02 23:17:01,907 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.666666666666666) internal successors, (87), 8 states have internal predecessors, (87), 0 states have call successors, (0), 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 93 [2021-11-02 23:17:01,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:17:02,044 INFO L225 Difference]: With dead ends: 62082 [2021-11-02 23:17:02,045 INFO L226 Difference]: Without dead ends: 60756 [2021-11-02 23:17:02,059 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=182, Invalid=370, Unknown=0, NotChecked=0, Total=552 [2021-11-02 23:17:02,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60756 states. [2021-11-02 23:17:04,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60756 to 53553. [2021-11-02 23:17:04,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53553 states, 53547 states have (on average 1.8184025248846807) internal successors, (97370), 53552 states have internal predecessors, (97370), 0 states have call successors, (0), 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 23:17:04,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53553 states to 53553 states and 97370 transitions. [2021-11-02 23:17:04,583 INFO L78 Accepts]: Start accepts. Automaton has 53553 states and 97370 transitions. Word has length 93 [2021-11-02 23:17:04,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:17:04,584 INFO L470 AbstractCegarLoop]: Abstraction has 53553 states and 97370 transitions. [2021-11-02 23:17:04,584 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.666666666666666) internal successors, (87), 8 states have internal predecessors, (87), 0 states have call successors, (0), 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 23:17:04,584 INFO L276 IsEmpty]: Start isEmpty. Operand 53553 states and 97370 transitions. [2021-11-02 23:17:04,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-11-02 23:17:04,613 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:17:04,614 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 23:17:04,614 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-02 23:17:04,614 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 23:17:04,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:17:04,615 INFO L85 PathProgramCache]: Analyzing trace with hash 803807105, now seen corresponding path program 1 times [2021-11-02 23:17:04,615 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:17:04,615 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503501583] [2021-11-02 23:17:04,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:17:04,616 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:17:04,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:17:04,731 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 23:17:04,732 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:17:04,732 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503501583] [2021-11-02 23:17:04,732 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1503501583] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 23:17:04,732 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 23:17:04,733 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-02 23:17:04,733 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102133688] [2021-11-02 23:17:04,733 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-02 23:17:04,733 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:17:04,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-02 23:17:04,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-02 23:17:04,735 INFO L87 Difference]: Start difference. First operand 53553 states and 97370 transitions. Second operand has 8 states, 8 states have (on average 11.0) internal successors, (88), 8 states have internal predecessors, (88), 0 states have call successors, (0), 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 23:17:07,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:17:07,555 INFO L93 Difference]: Finished difference Result 58992 states and 106407 transitions. [2021-11-02 23:17:07,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-02 23:17:07,565 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.0) internal successors, (88), 8 states have internal predecessors, (88), 0 states have call successors, (0), 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 94 [2021-11-02 23:17:07,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:17:07,696 INFO L225 Difference]: With dead ends: 58992 [2021-11-02 23:17:07,696 INFO L226 Difference]: Without dead ends: 55426 [2021-11-02 23:17:07,720 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=101, Invalid=205, Unknown=0, NotChecked=0, Total=306 [2021-11-02 23:17:07,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55426 states. [2021-11-02 23:17:09,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55426 to 53445. [2021-11-02 23:17:09,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53445 states, 53439 states have (on average 1.8175864069312675) internal successors, (97130), 53444 states have internal predecessors, (97130), 0 states have call successors, (0), 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 23:17:10,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53445 states to 53445 states and 97130 transitions. [2021-11-02 23:17:10,013 INFO L78 Accepts]: Start accepts. Automaton has 53445 states and 97130 transitions. Word has length 94 [2021-11-02 23:17:10,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:17:10,013 INFO L470 AbstractCegarLoop]: Abstraction has 53445 states and 97130 transitions. [2021-11-02 23:17:10,013 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.0) internal successors, (88), 8 states have internal predecessors, (88), 0 states have call successors, (0), 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 23:17:10,013 INFO L276 IsEmpty]: Start isEmpty. Operand 53445 states and 97130 transitions. [2021-11-02 23:17:10,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-11-02 23:17:10,046 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:17:10,046 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 23:17:10,046 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-02 23:17:10,047 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 23:17:10,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:17:10,047 INFO L85 PathProgramCache]: Analyzing trace with hash -357162919, now seen corresponding path program 1 times [2021-11-02 23:17:10,048 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:17:10,048 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292072555] [2021-11-02 23:17:10,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:17:10,048 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:17:10,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:17:10,126 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 23:17:10,127 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:17:10,127 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292072555] [2021-11-02 23:17:10,127 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [292072555] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 23:17:10,127 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 23:17:10,127 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 23:17:10,128 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71075691] [2021-11-02 23:17:10,128 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 23:17:10,128 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:17:10,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 23:17:10,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 23:17:10,129 INFO L87 Difference]: Start difference. First operand 53445 states and 97130 transitions. Second operand has 4 states, 4 states have (on average 22.0) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 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 23:17:14,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:17:14,309 INFO L93 Difference]: Finished difference Result 88273 states and 159084 transitions. [2021-11-02 23:17:14,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 23:17:14,310 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 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 94 [2021-11-02 23:17:14,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:17:14,480 INFO L225 Difference]: With dead ends: 88273 [2021-11-02 23:17:14,480 INFO L226 Difference]: Without dead ends: 85852 [2021-11-02 23:17:14,502 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-02 23:17:14,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85852 states. [2021-11-02 23:17:18,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85852 to 80778. [2021-11-02 23:17:18,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80778 states, 80772 states have (on average 1.815938691625811) internal successors, (146677), 80777 states have internal predecessors, (146677), 0 states have call successors, (0), 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 23:17:18,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80778 states to 80778 states and 146677 transitions. [2021-11-02 23:17:18,304 INFO L78 Accepts]: Start accepts. Automaton has 80778 states and 146677 transitions. Word has length 94 [2021-11-02 23:17:18,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:17:18,305 INFO L470 AbstractCegarLoop]: Abstraction has 80778 states and 146677 transitions. [2021-11-02 23:17:18,305 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 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 23:17:18,305 INFO L276 IsEmpty]: Start isEmpty. Operand 80778 states and 146677 transitions. [2021-11-02 23:17:18,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-11-02 23:17:18,396 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:17:18,396 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 23:17:18,397 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-02 23:17:18,397 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-02 23:17:18,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:17:18,398 INFO L85 PathProgramCache]: Analyzing trace with hash -334530665, now seen corresponding path program 1 times [2021-11-02 23:17:18,398 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:17:18,398 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982515820] [2021-11-02 23:17:18,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:17:18,399 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:17:18,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:17:18,557 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 23:17:18,557 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:17:18,558 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982515820] [2021-11-02 23:17:18,558 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1982515820] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 23:17:18,558 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 23:17:18,558 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-02 23:17:18,559 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865580102] [2021-11-02 23:17:18,559 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-02 23:17:18,559 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:17:18,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-02 23:17:18,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-11-02 23:17:18,560 INFO L87 Difference]: Start difference. First operand 80778 states and 146677 transitions. Second operand has 9 states, 9 states have (on average 9.777777777777779) internal successors, (88), 9 states have internal predecessors, (88), 0 states have call successors, (0), 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 23:17:26,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:17:26,494 INFO L93 Difference]: Finished difference Result 114774 states and 203111 transitions. [2021-11-02 23:17:26,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-02 23:17:26,495 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.777777777777779) internal successors, (88), 9 states have internal predecessors, (88), 0 states have call successors, (0), 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 94 [2021-11-02 23:17:26,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:17:26,725 INFO L225 Difference]: With dead ends: 114774 [2021-11-02 23:17:26,725 INFO L226 Difference]: Without dead ends: 109343 [2021-11-02 23:17:26,754 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=147, Invalid=359, Unknown=0, NotChecked=0, Total=506 [2021-11-02 23:17:26,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109343 states.