./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec7_product25.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7e70badd Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee49d9ad-6e6a-4b76-ad25-744fba386d91/bin/uautomizer-wIGwrQj20G/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee49d9ad-6e6a-4b76-ad25-744fba386d91/bin/uautomizer-wIGwrQj20G/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee49d9ad-6e6a-4b76-ad25-744fba386d91/bin/uautomizer-wIGwrQj20G/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee49d9ad-6e6a-4b76-ad25-744fba386d91/bin/uautomizer-wIGwrQj20G/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec7_product25.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee49d9ad-6e6a-4b76-ad25-744fba386d91/bin/uautomizer-wIGwrQj20G/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee49d9ad-6e6a-4b76-ad25-744fba386d91/bin/uautomizer-wIGwrQj20G --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6fd6d1c71ba5dc2d3b9a29abb89e94ab4329c839d1f475ee44ea6eb34f32fbde --- Real Ultimate output --- This is Ultimate 0.2.1-dev-7e70bad [2021-11-23 12:39:35,065 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 12:39:35,073 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 12:39:35,132 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 12:39:35,133 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 12:39:35,137 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 12:39:35,139 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 12:39:35,143 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 12:39:35,147 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 12:39:35,155 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 12:39:35,157 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 12:39:35,159 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 12:39:35,159 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 12:39:35,162 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 12:39:35,164 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 12:39:35,169 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 12:39:35,171 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 12:39:35,173 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 12:39:35,175 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 12:39:35,185 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 12:39:35,187 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 12:39:35,189 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 12:39:35,193 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 12:39:35,194 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 12:39:35,203 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 12:39:35,203 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 12:39:35,204 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 12:39:35,206 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 12:39:35,207 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 12:39:35,209 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 12:39:35,209 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 12:39:35,210 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 12:39:35,213 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 12:39:35,214 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 12:39:35,216 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 12:39:35,216 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 12:39:35,217 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 12:39:35,217 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 12:39:35,217 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 12:39:35,218 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 12:39:35,219 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 12:39:35,220 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee49d9ad-6e6a-4b76-ad25-744fba386d91/bin/uautomizer-wIGwrQj20G/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-23 12:39:35,260 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 12:39:35,260 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 12:39:35,261 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 12:39:35,261 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 12:39:35,268 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-23 12:39:35,269 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-23 12:39:35,269 INFO L138 SettingsManager]: * Use SBE=true [2021-11-23 12:39:35,269 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 12:39:35,269 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 12:39:35,269 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 12:39:35,271 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 12:39:35,271 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 12:39:35,271 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 12:39:35,271 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 12:39:35,272 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 12:39:35,272 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 12:39:35,272 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 12:39:35,272 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 12:39:35,272 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 12:39:35,273 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 12:39:35,273 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 12:39:35,273 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 12:39:35,273 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 12:39:35,273 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 12:39:35,274 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 12:39:35,274 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 12:39:35,274 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-23 12:39:35,274 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 12:39:35,274 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-23 12:39:35,275 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-23 12:39:35,275 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 12:39:35,275 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 12:39:35,275 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_ee49d9ad-6e6a-4b76-ad25-744fba386d91/bin/uautomizer-wIGwrQj20G/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee49d9ad-6e6a-4b76-ad25-744fba386d91/bin/uautomizer-wIGwrQj20G Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6fd6d1c71ba5dc2d3b9a29abb89e94ab4329c839d1f475ee44ea6eb34f32fbde [2021-11-23 12:39:35,581 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 12:39:35,607 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 12:39:35,609 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 12:39:35,611 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 12:39:35,612 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 12:39:35,613 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee49d9ad-6e6a-4b76-ad25-744fba386d91/bin/uautomizer-wIGwrQj20G/../../sv-benchmarks/c/product-lines/email_spec7_product25.cil.c [2021-11-23 12:39:35,686 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee49d9ad-6e6a-4b76-ad25-744fba386d91/bin/uautomizer-wIGwrQj20G/data/f2a396e5c/7407535a3c1547c988bc98bd6035b301/FLAG651c4cd3d [2021-11-23 12:39:36,326 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 12:39:36,327 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee49d9ad-6e6a-4b76-ad25-744fba386d91/sv-benchmarks/c/product-lines/email_spec7_product25.cil.c [2021-11-23 12:39:36,349 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee49d9ad-6e6a-4b76-ad25-744fba386d91/bin/uautomizer-wIGwrQj20G/data/f2a396e5c/7407535a3c1547c988bc98bd6035b301/FLAG651c4cd3d [2021-11-23 12:39:36,535 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee49d9ad-6e6a-4b76-ad25-744fba386d91/bin/uautomizer-wIGwrQj20G/data/f2a396e5c/7407535a3c1547c988bc98bd6035b301 [2021-11-23 12:39:36,539 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 12:39:36,541 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 12:39:36,544 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 12:39:36,544 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 12:39:36,548 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 12:39:36,549 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 12:39:36" (1/1) ... [2021-11-23 12:39:36,550 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c2268d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:39:36, skipping insertion in model container [2021-11-23 12:39:36,550 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 12:39:36" (1/1) ... [2021-11-23 12:39:36,557 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 12:39:36,647 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 12:39:37,031 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee49d9ad-6e6a-4b76-ad25-744fba386d91/sv-benchmarks/c/product-lines/email_spec7_product25.cil.c[8804,8817] [2021-11-23 12:39:37,333 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 12:39:37,343 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 12:39:37,368 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee49d9ad-6e6a-4b76-ad25-744fba386d91/sv-benchmarks/c/product-lines/email_spec7_product25.cil.c[8804,8817] [2021-11-23 12:39:37,495 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 12:39:37,544 INFO L208 MainTranslator]: Completed translation [2021-11-23 12:39:37,545 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:39:37 WrapperNode [2021-11-23 12:39:37,545 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 12:39:37,547 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 12:39:37,547 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 12:39:37,547 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 12:39:37,555 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:39:37" (1/1) ... [2021-11-23 12:39:37,611 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:39:37" (1/1) ... [2021-11-23 12:39:37,786 INFO L137 Inliner]: procedures = 130, calls = 215, calls flagged for inlining = 126, calls inlined = 304, statements flattened = 4600 [2021-11-23 12:39:37,787 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 12:39:37,788 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 12:39:37,788 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 12:39:37,788 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 12:39:37,797 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:39:37" (1/1) ... [2021-11-23 12:39:37,797 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:39:37" (1/1) ... [2021-11-23 12:39:37,817 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:39:37" (1/1) ... [2021-11-23 12:39:37,817 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:39:37" (1/1) ... [2021-11-23 12:39:37,934 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:39:37" (1/1) ... [2021-11-23 12:39:37,990 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:39:37" (1/1) ... [2021-11-23 12:39:37,998 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:39:37" (1/1) ... [2021-11-23 12:39:38,028 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 12:39:38,032 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 12:39:38,033 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 12:39:38,033 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 12:39:38,035 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:39:37" (1/1) ... [2021-11-23 12:39:38,043 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 12:39:38,054 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee49d9ad-6e6a-4b76-ad25-744fba386d91/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:39:38,071 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee49d9ad-6e6a-4b76-ad25-744fba386d91/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 12:39:38,095 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee49d9ad-6e6a-4b76-ad25-744fba386d91/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 12:39:38,123 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2021-11-23 12:39:38,123 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 12:39:38,124 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 12:39:38,124 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 12:39:38,124 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 12:39:38,402 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 12:39:38,404 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 12:39:40,515 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 12:39:40,539 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 12:39:40,539 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-23 12:39:40,543 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 12:39:40 BoogieIcfgContainer [2021-11-23 12:39:40,544 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 12:39:40,548 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 12:39:40,548 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 12:39:40,552 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 12:39:40,552 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 12:39:36" (1/3) ... [2021-11-23 12:39:40,553 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56403119 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 12:39:40, skipping insertion in model container [2021-11-23 12:39:40,553 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:39:37" (2/3) ... [2021-11-23 12:39:40,554 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56403119 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 12:39:40, skipping insertion in model container [2021-11-23 12:39:40,554 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 12:39:40" (3/3) ... [2021-11-23 12:39:40,555 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec7_product25.cil.c [2021-11-23 12:39:40,565 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 12:39:40,565 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-11-23 12:39:40,621 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 12:39:40,628 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-23 12:39:40,628 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-11-23 12:39:40,680 INFO L276 IsEmpty]: Start isEmpty. Operand has 948 states, 941 states have (on average 1.6663124335812964) internal successors, (1568), 947 states have internal predecessors, (1568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:39:40,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-11-23 12:39:40,717 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:39:40,718 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:39:40,718 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)] === [2021-11-23 12:39:40,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:39:40,728 INFO L85 PathProgramCache]: Analyzing trace with hash -46085680, now seen corresponding path program 1 times [2021-11-23 12:39:40,736 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:39:40,736 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610094625] [2021-11-23 12:39:40,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:39:40,737 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:39:40,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:39:41,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:39:41,014 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:39:41,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610094625] [2021-11-23 12:39:41,015 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1610094625] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:39:41,015 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:39:41,016 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 12:39:41,017 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82585348] [2021-11-23 12:39:41,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:39:41,038 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 12:39:41,039 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:39:41,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 12:39:41,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 12:39:41,098 INFO L87 Difference]: Start difference. First operand has 948 states, 941 states have (on average 1.6663124335812964) internal successors, (1568), 947 states have internal predecessors, (1568), 0 states have call successors, (0), 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 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:39:41,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:39:41,393 INFO L93 Difference]: Finished difference Result 2791 states and 4628 transitions. [2021-11-23 12:39:41,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 12:39:41,402 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-11-23 12:39:41,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:39:41,438 INFO L225 Difference]: With dead ends: 2791 [2021-11-23 12:39:41,438 INFO L226 Difference]: Without dead ends: 1561 [2021-11-23 12:39:41,449 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 12:39:41,457 INFO L933 BasicCegarLoop]: 3067 mSDtfsCounter, 1529 mSDsluCounter, 1524 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1529 SdHoareTripleChecker+Valid, 4591 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 12:39:41,459 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1529 Valid, 4591 Invalid, 17 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 12:39:41,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1561 states. [2021-11-23 12:39:41,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1561 to 791. [2021-11-23 12:39:41,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 791 states, 785 states have (on average 1.6751592356687899) internal successors, (1315), 790 states have internal predecessors, (1315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:39:41,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 791 states to 791 states and 1315 transitions. [2021-11-23 12:39:41,575 INFO L78 Accepts]: Start accepts. Automaton has 791 states and 1315 transitions. Word has length 48 [2021-11-23 12:39:41,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:39:41,575 INFO L470 AbstractCegarLoop]: Abstraction has 791 states and 1315 transitions. [2021-11-23 12:39:41,576 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:39:41,576 INFO L276 IsEmpty]: Start isEmpty. Operand 791 states and 1315 transitions. [2021-11-23 12:39:41,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-11-23 12:39:41,581 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:39:41,581 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:39:41,581 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 12:39:41,582 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)] === [2021-11-23 12:39:41,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:39:41,583 INFO L85 PathProgramCache]: Analyzing trace with hash 1260989115, now seen corresponding path program 1 times [2021-11-23 12:39:41,583 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:39:41,584 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087922265] [2021-11-23 12:39:41,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:39:41,584 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:39:41,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:39:41,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:39:41,727 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:39:41,728 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087922265] [2021-11-23 12:39:41,728 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1087922265] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:39:41,728 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:39:41,728 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 12:39:41,729 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228988233] [2021-11-23 12:39:41,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:39:41,730 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 12:39:41,732 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:39:41,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 12:39:41,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 12:39:41,734 INFO L87 Difference]: Start difference. First operand 791 states and 1315 transitions. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:39:42,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:39:42,025 INFO L93 Difference]: Finished difference Result 2314 states and 3853 transitions. [2021-11-23 12:39:42,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 12:39:42,026 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2021-11-23 12:39:42,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:39:42,037 INFO L225 Difference]: With dead ends: 2314 [2021-11-23 12:39:42,037 INFO L226 Difference]: Without dead ends: 1546 [2021-11-23 12:39:42,039 INFO L932 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 [2021-11-23 12:39:42,041 INFO L933 BasicCegarLoop]: 2538 mSDtfsCounter, 2584 mSDsluCounter, 3799 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2584 SdHoareTripleChecker+Valid, 6337 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 12:39:42,042 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2584 Valid, 6337 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 12:39:42,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1546 states. [2021-11-23 12:39:42,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1546 to 791. [2021-11-23 12:39:42,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 791 states, 785 states have (on average 1.6738853503184714) internal successors, (1314), 790 states have internal predecessors, (1314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:39:42,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 791 states to 791 states and 1314 transitions. [2021-11-23 12:39:42,093 INFO L78 Accepts]: Start accepts. Automaton has 791 states and 1314 transitions. Word has length 50 [2021-11-23 12:39:42,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:39:42,094 INFO L470 AbstractCegarLoop]: Abstraction has 791 states and 1314 transitions. [2021-11-23 12:39:42,094 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:39:42,094 INFO L276 IsEmpty]: Start isEmpty. Operand 791 states and 1314 transitions. [2021-11-23 12:39:42,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-23 12:39:42,098 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:39:42,098 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:39:42,099 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-23 12:39:42,099 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)] === [2021-11-23 12:39:42,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:39:42,100 INFO L85 PathProgramCache]: Analyzing trace with hash -1665226304, now seen corresponding path program 1 times [2021-11-23 12:39:42,100 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:39:42,100 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804702331] [2021-11-23 12:39:42,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:39:42,101 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:39:42,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:39:42,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:39:42,171 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:39:42,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804702331] [2021-11-23 12:39:42,172 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1804702331] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:39:42,172 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:39:42,172 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 12:39:42,173 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911510621] [2021-11-23 12:39:42,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:39:42,173 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 12:39:42,173 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:39:42,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 12:39:42,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 12:39:42,175 INFO L87 Difference]: Start difference. First operand 791 states and 1314 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:39:42,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:39:42,243 INFO L93 Difference]: Finished difference Result 1561 states and 2599 transitions. [2021-11-23 12:39:42,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 12:39:42,244 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 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 51 [2021-11-23 12:39:42,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:39:42,249 INFO L225 Difference]: With dead ends: 1561 [2021-11-23 12:39:42,249 INFO L226 Difference]: Without dead ends: 798 [2021-11-23 12:39:42,251 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 12:39:42,252 INFO L933 BasicCegarLoop]: 1318 mSDtfsCounter, 1287 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1287 SdHoareTripleChecker+Valid, 1340 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 12:39:42,253 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1287 Valid, 1340 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 12:39:42,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 798 states. [2021-11-23 12:39:42,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 798 to 791. [2021-11-23 12:39:42,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 791 states, 785 states have (on average 1.670063694267516) internal successors, (1311), 790 states have internal predecessors, (1311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:39:42,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 791 states to 791 states and 1311 transitions. [2021-11-23 12:39:42,304 INFO L78 Accepts]: Start accepts. Automaton has 791 states and 1311 transitions. Word has length 51 [2021-11-23 12:39:42,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:39:42,305 INFO L470 AbstractCegarLoop]: Abstraction has 791 states and 1311 transitions. [2021-11-23 12:39:42,305 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:39:42,306 INFO L276 IsEmpty]: Start isEmpty. Operand 791 states and 1311 transitions. [2021-11-23 12:39:42,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-11-23 12:39:42,310 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:39:42,310 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:39:42,310 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-23 12:39:42,312 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)] === [2021-11-23 12:39:42,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:39:42,313 INFO L85 PathProgramCache]: Analyzing trace with hash 2142245157, now seen corresponding path program 1 times [2021-11-23 12:39:42,313 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:39:42,313 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083603751] [2021-11-23 12:39:42,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:39:42,314 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:39:42,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:39:42,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:39:42,430 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:39:42,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083603751] [2021-11-23 12:39:42,431 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1083603751] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:39:42,431 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:39:42,431 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 12:39:42,431 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539458200] [2021-11-23 12:39:42,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:39:42,432 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 12:39:42,433 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:39:42,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 12:39:42,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 12:39:42,434 INFO L87 Difference]: Start difference. First operand 791 states and 1311 transitions. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:39:42,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:39:42,670 INFO L93 Difference]: Finished difference Result 2301 states and 3830 transitions. [2021-11-23 12:39:42,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 12:39:42,670 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2021-11-23 12:39:42,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:39:42,681 INFO L225 Difference]: With dead ends: 2301 [2021-11-23 12:39:42,681 INFO L226 Difference]: Without dead ends: 1543 [2021-11-23 12:39:42,683 INFO L932 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 [2021-11-23 12:39:42,693 INFO L933 BasicCegarLoop]: 1295 mSDtfsCounter, 6306 mSDsluCounter, 1308 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6306 SdHoareTripleChecker+Valid, 2603 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 12:39:42,695 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6306 Valid, 2603 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 12:39:42,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1543 states. [2021-11-23 12:39:42,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1543 to 791. [2021-11-23 12:39:42,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 791 states, 785 states have (on average 1.6687898089171975) internal successors, (1310), 790 states have internal predecessors, (1310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:39:42,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 791 states to 791 states and 1310 transitions. [2021-11-23 12:39:42,752 INFO L78 Accepts]: Start accepts. Automaton has 791 states and 1310 transitions. Word has length 53 [2021-11-23 12:39:42,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:39:42,754 INFO L470 AbstractCegarLoop]: Abstraction has 791 states and 1310 transitions. [2021-11-23 12:39:42,754 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:39:42,754 INFO L276 IsEmpty]: Start isEmpty. Operand 791 states and 1310 transitions. [2021-11-23 12:39:42,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-11-23 12:39:42,756 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:39:42,757 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:39:42,757 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-23 12:39:42,757 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)] === [2021-11-23 12:39:42,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:39:42,760 INFO L85 PathProgramCache]: Analyzing trace with hash -528310186, now seen corresponding path program 1 times [2021-11-23 12:39:42,760 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:39:42,761 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284148807] [2021-11-23 12:39:42,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:39:42,762 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:39:42,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:39:42,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:39:42,876 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:39:42,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284148807] [2021-11-23 12:39:42,876 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1284148807] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:39:42,876 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:39:42,876 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 12:39:42,877 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877945607] [2021-11-23 12:39:42,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:39:42,878 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 12:39:42,878 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:39:42,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 12:39:42,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 12:39:42,879 INFO L87 Difference]: Start difference. First operand 791 states and 1310 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:39:43,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:39:43,116 INFO L93 Difference]: Finished difference Result 2308 states and 3836 transitions. [2021-11-23 12:39:43,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 12:39:43,117 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2021-11-23 12:39:43,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:39:43,128 INFO L225 Difference]: With dead ends: 2308 [2021-11-23 12:39:43,128 INFO L226 Difference]: Without dead ends: 1550 [2021-11-23 12:39:43,130 INFO L932 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 [2021-11-23 12:39:43,133 INFO L933 BasicCegarLoop]: 1294 mSDtfsCounter, 6310 mSDsluCounter, 1312 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6310 SdHoareTripleChecker+Valid, 2606 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 12:39:43,134 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6310 Valid, 2606 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 12:39:43,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1550 states. [2021-11-23 12:39:43,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1550 to 791. [2021-11-23 12:39:43,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 791 states, 785 states have (on average 1.667515923566879) internal successors, (1309), 790 states have internal predecessors, (1309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:39:43,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 791 states to 791 states and 1309 transitions. [2021-11-23 12:39:43,196 INFO L78 Accepts]: Start accepts. Automaton has 791 states and 1309 transitions. Word has length 54 [2021-11-23 12:39:43,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:39:43,197 INFO L470 AbstractCegarLoop]: Abstraction has 791 states and 1309 transitions. [2021-11-23 12:39:43,198 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:39:43,198 INFO L276 IsEmpty]: Start isEmpty. Operand 791 states and 1309 transitions. [2021-11-23 12:39:43,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-23 12:39:43,204 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:39:43,204 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:39:43,204 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-23 12:39:43,204 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)] === [2021-11-23 12:39:43,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:39:43,207 INFO L85 PathProgramCache]: Analyzing trace with hash 1310137376, now seen corresponding path program 1 times [2021-11-23 12:39:43,207 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:39:43,207 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263224609] [2021-11-23 12:39:43,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:39:43,217 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:39:43,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:39:43,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:39:43,301 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:39:43,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263224609] [2021-11-23 12:39:43,302 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1263224609] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:39:43,302 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:39:43,302 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 12:39:43,302 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068890141] [2021-11-23 12:39:43,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:39:43,303 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 12:39:43,303 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:39:43,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 12:39:43,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 12:39:43,304 INFO L87 Difference]: Start difference. First operand 791 states and 1309 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:39:43,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:39:43,383 INFO L93 Difference]: Finished difference Result 1283 states and 2094 transitions. [2021-11-23 12:39:43,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 12:39:43,384 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 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 55 [2021-11-23 12:39:43,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:39:43,390 INFO L225 Difference]: With dead ends: 1283 [2021-11-23 12:39:43,390 INFO L226 Difference]: Without dead ends: 794 [2021-11-23 12:39:43,393 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 12:39:43,395 INFO L933 BasicCegarLoop]: 1307 mSDtfsCounter, 1 mSDsluCounter, 1305 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 2612 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 12:39:43,396 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 2612 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 12:39:43,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 794 states. [2021-11-23 12:39:43,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 794 to 793. [2021-11-23 12:39:43,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 793 states, 787 states have (on average 1.6658195679796697) internal successors, (1311), 792 states have internal predecessors, (1311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:39:43,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 793 states to 793 states and 1311 transitions. [2021-11-23 12:39:43,465 INFO L78 Accepts]: Start accepts. Automaton has 793 states and 1311 transitions. Word has length 55 [2021-11-23 12:39:43,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:39:43,467 INFO L470 AbstractCegarLoop]: Abstraction has 793 states and 1311 transitions. [2021-11-23 12:39:43,467 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:39:43,468 INFO L276 IsEmpty]: Start isEmpty. Operand 793 states and 1311 transitions. [2021-11-23 12:39:43,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-23 12:39:43,469 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:39:43,469 INFO L514 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] [2021-11-23 12:39:43,469 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-23 12:39:43,470 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)] === [2021-11-23 12:39:43,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:39:43,470 INFO L85 PathProgramCache]: Analyzing trace with hash 2139704642, now seen corresponding path program 1 times [2021-11-23 12:39:43,471 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:39:43,471 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476416083] [2021-11-23 12:39:43,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:39:43,471 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:39:43,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:39:43,541 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:39:43,541 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:39:43,542 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476416083] [2021-11-23 12:39:43,542 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476416083] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:39:43,542 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:39:43,542 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 12:39:43,542 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789351878] [2021-11-23 12:39:43,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:39:43,543 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 12:39:43,543 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:39:43,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 12:39:43,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 12:39:43,544 INFO L87 Difference]: Start difference. First operand 793 states and 1311 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:39:43,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:39:43,655 INFO L93 Difference]: Finished difference Result 2251 states and 3743 transitions. [2021-11-23 12:39:43,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 12:39:43,656 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 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 61 [2021-11-23 12:39:43,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:39:43,668 INFO L225 Difference]: With dead ends: 2251 [2021-11-23 12:39:43,668 INFO L226 Difference]: Without dead ends: 1496 [2021-11-23 12:39:43,670 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 12:39:43,672 INFO L933 BasicCegarLoop]: 1308 mSDtfsCounter, 1259 mSDsluCounter, 1210 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1259 SdHoareTripleChecker+Valid, 2518 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 12:39:43,673 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1259 Valid, 2518 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 12:39:43,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1496 states. [2021-11-23 12:39:43,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1496 to 1007. [2021-11-23 12:39:43,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1007 states, 1001 states have (on average 1.6953046953046953) internal successors, (1697), 1006 states have internal predecessors, (1697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:39:43,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1007 states to 1007 states and 1697 transitions. [2021-11-23 12:39:43,748 INFO L78 Accepts]: Start accepts. Automaton has 1007 states and 1697 transitions. Word has length 61 [2021-11-23 12:39:43,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:39:43,749 INFO L470 AbstractCegarLoop]: Abstraction has 1007 states and 1697 transitions. [2021-11-23 12:39:43,749 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:39:43,749 INFO L276 IsEmpty]: Start isEmpty. Operand 1007 states and 1697 transitions. [2021-11-23 12:39:43,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-23 12:39:43,751 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:39:43,751 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:39:43,751 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-23 12:39:43,752 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)] === [2021-11-23 12:39:43,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:39:43,753 INFO L85 PathProgramCache]: Analyzing trace with hash -2041555532, now seen corresponding path program 1 times [2021-11-23 12:39:43,753 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:39:43,754 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522703507] [2021-11-23 12:39:43,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:39:43,754 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:39:43,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:39:43,830 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:39:43,830 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:39:43,830 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522703507] [2021-11-23 12:39:43,831 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1522703507] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 12:39:43,831 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1249817741] [2021-11-23 12:39:43,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:39:43,831 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:39:43,832 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee49d9ad-6e6a-4b76-ad25-744fba386d91/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:39:43,837 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee49d9ad-6e6a-4b76-ad25-744fba386d91/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 12:39:43,867 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee49d9ad-6e6a-4b76-ad25-744fba386d91/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-23 12:39:44,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:39:44,109 INFO L263 TraceCheckSpWp]: Trace formula consists of 799 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 12:39:44,117 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:39:44,292 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:39:44,292 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 12:39:44,401 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:39:44,401 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1249817741] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 12:39:44,401 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 12:39:44,402 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2021-11-23 12:39:44,402 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29140794] [2021-11-23 12:39:44,402 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 12:39:44,403 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-23 12:39:44,403 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:39:44,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-23 12:39:44,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-11-23 12:39:44,405 INFO L87 Difference]: Start difference. First operand 1007 states and 1697 transitions. Second operand has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:39:44,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:39:44,752 INFO L93 Difference]: Finished difference Result 4191 states and 7044 transitions. [2021-11-23 12:39:44,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 12:39:44,755 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2021-11-23 12:39:44,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:39:44,779 INFO L225 Difference]: With dead ends: 4191 [2021-11-23 12:39:44,779 INFO L226 Difference]: Without dead ends: 3702 [2021-11-23 12:39:44,782 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-11-23 12:39:44,782 INFO L933 BasicCegarLoop]: 1307 mSDtfsCounter, 5035 mSDsluCounter, 6391 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5035 SdHoareTripleChecker+Valid, 7698 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 12:39:44,783 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5035 Valid, 7698 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 12:39:44,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3702 states. [2021-11-23 12:39:44,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3702 to 2235. [2021-11-23 12:39:44,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2235 states, 2229 states have (on average 1.7559443696724988) internal successors, (3914), 2234 states have internal predecessors, (3914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:39:44,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2235 states to 2235 states and 3914 transitions. [2021-11-23 12:39:44,954 INFO L78 Accepts]: Start accepts. Automaton has 2235 states and 3914 transitions. Word has length 62 [2021-11-23 12:39:44,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:39:44,955 INFO L470 AbstractCegarLoop]: Abstraction has 2235 states and 3914 transitions. [2021-11-23 12:39:44,955 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:39:44,955 INFO L276 IsEmpty]: Start isEmpty. Operand 2235 states and 3914 transitions. [2021-11-23 12:39:44,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-23 12:39:44,958 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:39:44,959 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:39:44,998 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee49d9ad-6e6a-4b76-ad25-744fba386d91/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-23 12:39:45,185 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee49d9ad-6e6a-4b76-ad25-744fba386d91/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:39:45,185 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)] === [2021-11-23 12:39:45,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:39:45,186 INFO L85 PathProgramCache]: Analyzing trace with hash -1028960697, now seen corresponding path program 1 times [2021-11-23 12:39:45,186 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:39:45,186 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081992230] [2021-11-23 12:39:45,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:39:45,186 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:39:45,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:39:45,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:39:45,248 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:39:45,248 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081992230] [2021-11-23 12:39:45,248 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1081992230] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:39:45,248 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:39:45,249 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 12:39:45,249 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883805254] [2021-11-23 12:39:45,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:39:45,249 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 12:39:45,250 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:39:45,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 12:39:45,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 12:39:45,251 INFO L87 Difference]: Start difference. First operand 2235 states and 3914 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) [2021-11-23 12:39:45,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:39:45,487 INFO L93 Difference]: Finished difference Result 6084 states and 10662 transitions. [2021-11-23 12:39:45,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 12:39:45,487 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 [2021-11-23 12:39:45,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:39:45,513 INFO L225 Difference]: With dead ends: 6084 [2021-11-23 12:39:45,513 INFO L226 Difference]: Without dead ends: 3949 [2021-11-23 12:39:45,518 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 12:39:45,520 INFO L933 BasicCegarLoop]: 1309 mSDtfsCounter, 1257 mSDsluCounter, 1304 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1257 SdHoareTripleChecker+Valid, 2613 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 12:39:45,524 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1257 Valid, 2613 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 12:39:45,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3949 states. [2021-11-23 12:39:45,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3949 to 3460. [2021-11-23 12:39:45,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3460 states, 3454 states have (on average 1.7712796757382745) internal successors, (6118), 3459 states have internal predecessors, (6118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:39:45,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3460 states to 3460 states and 6118 transitions. [2021-11-23 12:39:45,772 INFO L78 Accepts]: Start accepts. Automaton has 3460 states and 6118 transitions. Word has length 68 [2021-11-23 12:39:45,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:39:45,772 INFO L470 AbstractCegarLoop]: Abstraction has 3460 states and 6118 transitions. [2021-11-23 12:39:45,772 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) [2021-11-23 12:39:45,773 INFO L276 IsEmpty]: Start isEmpty. Operand 3460 states and 6118 transitions. [2021-11-23 12:39:45,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-23 12:39:45,780 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:39:45,780 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:39:45,780 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-23 12:39:45,781 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)] === [2021-11-23 12:39:45,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:39:45,781 INFO L85 PathProgramCache]: Analyzing trace with hash 952935431, now seen corresponding path program 1 times [2021-11-23 12:39:45,781 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:39:45,782 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627890772] [2021-11-23 12:39:45,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:39:45,782 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:39:45,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:39:45,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:39:45,852 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:39:45,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627890772] [2021-11-23 12:39:45,852 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [627890772] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:39:45,853 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:39:45,853 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 12:39:45,853 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729672627] [2021-11-23 12:39:45,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:39:45,854 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 12:39:45,854 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:39:45,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 12:39:45,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 12:39:45,855 INFO L87 Difference]: Start difference. First operand 3460 states and 6118 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:39:46,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:39:46,172 INFO L93 Difference]: Finished difference Result 9148 states and 16188 transitions. [2021-11-23 12:39:46,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 12:39:46,172 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2021-11-23 12:39:46,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:39:46,229 INFO L225 Difference]: With dead ends: 9148 [2021-11-23 12:39:46,229 INFO L226 Difference]: Without dead ends: 5878 [2021-11-23 12:39:46,235 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 12:39:46,235 INFO L933 BasicCegarLoop]: 1308 mSDtfsCounter, 1255 mSDsluCounter, 1296 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1255 SdHoareTripleChecker+Valid, 2604 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 12:39:46,237 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1255 Valid, 2604 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 12:39:46,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5878 states. [2021-11-23 12:39:46,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5878 to 5389. [2021-11-23 12:39:46,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5389 states, 5383 states have (on average 1.7815344603381014) internal successors, (9590), 5388 states have internal predecessors, (9590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:39:46,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5389 states to 5389 states and 9590 transitions. [2021-11-23 12:39:46,627 INFO L78 Accepts]: Start accepts. Automaton has 5389 states and 9590 transitions. Word has length 69 [2021-11-23 12:39:46,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:39:46,629 INFO L470 AbstractCegarLoop]: Abstraction has 5389 states and 9590 transitions. [2021-11-23 12:39:46,629 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:39:46,629 INFO L276 IsEmpty]: Start isEmpty. Operand 5389 states and 9590 transitions. [2021-11-23 12:39:46,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-23 12:39:46,641 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:39:46,641 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:39:46,641 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-23 12:39:46,642 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)] === [2021-11-23 12:39:46,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:39:46,642 INFO L85 PathProgramCache]: Analyzing trace with hash -265597787, now seen corresponding path program 1 times [2021-11-23 12:39:46,643 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:39:46,643 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571940010] [2021-11-23 12:39:46,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:39:46,643 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:39:46,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:39:46,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:39:46,706 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:39:46,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571940010] [2021-11-23 12:39:46,707 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [571940010] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:39:46,707 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:39:46,707 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 12:39:46,708 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087227255] [2021-11-23 12:39:46,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:39:46,708 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 12:39:46,708 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:39:46,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 12:39:46,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 12:39:46,710 INFO L87 Difference]: Start difference. First operand 5389 states and 9590 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:39:47,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:39:47,152 INFO L93 Difference]: Finished difference Result 13481 states and 23981 transitions. [2021-11-23 12:39:47,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 12:39:47,152 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2021-11-23 12:39:47,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:39:47,178 INFO L225 Difference]: With dead ends: 13481 [2021-11-23 12:39:47,178 INFO L226 Difference]: Without dead ends: 8639 [2021-11-23 12:39:47,185 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 12:39:47,186 INFO L933 BasicCegarLoop]: 1308 mSDtfsCounter, 1253 mSDsluCounter, 1248 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1253 SdHoareTripleChecker+Valid, 2556 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 12:39:47,187 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1253 Valid, 2556 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 12:39:47,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8639 states. [2021-11-23 12:39:47,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8639 to 8150. [2021-11-23 12:39:47,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8150 states, 8144 states have (on average 1.7853634577603144) internal successors, (14540), 8149 states have internal predecessors, (14540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:39:47,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8150 states to 8150 states and 14540 transitions. [2021-11-23 12:39:47,718 INFO L78 Accepts]: Start accepts. Automaton has 8150 states and 14540 transitions. Word has length 70 [2021-11-23 12:39:47,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:39:47,719 INFO L470 AbstractCegarLoop]: Abstraction has 8150 states and 14540 transitions. [2021-11-23 12:39:47,719 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:39:47,720 INFO L276 IsEmpty]: Start isEmpty. Operand 8150 states and 14540 transitions. [2021-11-23 12:39:47,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-23 12:39:47,731 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:39:47,731 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:39:47,731 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-23 12:39:47,731 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)] === [2021-11-23 12:39:47,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:39:47,732 INFO L85 PathProgramCache]: Analyzing trace with hash -1707070699, now seen corresponding path program 1 times [2021-11-23 12:39:47,732 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:39:47,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164229584] [2021-11-23 12:39:47,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:39:47,733 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:39:47,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:39:47,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:39:47,786 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:39:47,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164229584] [2021-11-23 12:39:47,786 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1164229584] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:39:47,786 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:39:47,786 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 12:39:47,787 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547030133] [2021-11-23 12:39:47,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:39:47,787 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 12:39:47,787 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:39:47,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 12:39:47,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 12:39:47,788 INFO L87 Difference]: Start difference. First operand 8150 states and 14540 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:39:48,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:39:48,444 INFO L93 Difference]: Finished difference Result 20019 states and 35713 transitions. [2021-11-23 12:39:48,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 12:39:48,445 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2021-11-23 12:39:48,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:39:48,487 INFO L225 Difference]: With dead ends: 20019 [2021-11-23 12:39:48,487 INFO L226 Difference]: Without dead ends: 12990 [2021-11-23 12:39:48,502 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 12:39:48,502 INFO L933 BasicCegarLoop]: 1308 mSDtfsCounter, 1251 mSDsluCounter, 1248 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1251 SdHoareTripleChecker+Valid, 2556 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 12:39:48,503 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1251 Valid, 2556 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 12:39:48,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12990 states. [2021-11-23 12:39:49,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12990 to 12501. [2021-11-23 12:39:49,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12501 states, 12495 states have (on average 1.78687474989996) internal successors, (22327), 12500 states have internal predecessors, (22327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:39:49,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12501 states to 12501 states and 22327 transitions. [2021-11-23 12:39:49,338 INFO L78 Accepts]: Start accepts. Automaton has 12501 states and 22327 transitions. Word has length 71 [2021-11-23 12:39:49,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:39:49,339 INFO L470 AbstractCegarLoop]: Abstraction has 12501 states and 22327 transitions. [2021-11-23 12:39:49,339 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:39:49,339 INFO L276 IsEmpty]: Start isEmpty. Operand 12501 states and 22327 transitions. [2021-11-23 12:39:49,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-23 12:39:49,349 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:39:49,349 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:39:49,350 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-23 12:39:49,350 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)] === [2021-11-23 12:39:49,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:39:49,350 INFO L85 PathProgramCache]: Analyzing trace with hash 1335399829, now seen corresponding path program 1 times [2021-11-23 12:39:49,351 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:39:49,351 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647044721] [2021-11-23 12:39:49,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:39:49,351 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:39:49,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:39:49,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:39:49,411 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:39:49,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647044721] [2021-11-23 12:39:49,411 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1647044721] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:39:49,411 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:39:49,411 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 12:39:49,412 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657964503] [2021-11-23 12:39:49,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:39:49,412 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 12:39:49,413 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:39:49,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 12:39:49,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 12:39:49,413 INFO L87 Difference]: Start difference. First operand 12501 states and 22327 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) [2021-11-23 12:39:50,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:39:50,264 INFO L93 Difference]: Finished difference Result 31923 states and 57115 transitions. [2021-11-23 12:39:50,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 12:39:50,265 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 [2021-11-23 12:39:50,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:39:50,330 INFO L225 Difference]: With dead ends: 31923 [2021-11-23 12:39:50,331 INFO L226 Difference]: Without dead ends: 21071 [2021-11-23 12:39:50,346 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 12:39:50,347 INFO L933 BasicCegarLoop]: 1308 mSDtfsCounter, 1249 mSDsluCounter, 1296 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1249 SdHoareTripleChecker+Valid, 2604 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 12:39:50,347 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1249 Valid, 2604 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 12:39:50,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21071 states. [2021-11-23 12:39:51,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21071 to 20582. [2021-11-23 12:39:51,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20582 states, 20576 states have (on average 1.7897550544323484) internal successors, (36826), 20581 states have internal predecessors, (36826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:39:51,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20582 states to 20582 states and 36826 transitions. [2021-11-23 12:39:51,603 INFO L78 Accepts]: Start accepts. Automaton has 20582 states and 36826 transitions. Word has length 72 [2021-11-23 12:39:51,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:39:51,603 INFO L470 AbstractCegarLoop]: Abstraction has 20582 states and 36826 transitions. [2021-11-23 12:39:51,604 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) [2021-11-23 12:39:51,604 INFO L276 IsEmpty]: Start isEmpty. Operand 20582 states and 36826 transitions. [2021-11-23 12:39:51,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-23 12:39:51,615 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:39:51,615 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:39:51,616 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-23 12:39:51,616 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)] === [2021-11-23 12:39:51,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:39:51,617 INFO L85 PathProgramCache]: Analyzing trace with hash -68623835, now seen corresponding path program 1 times [2021-11-23 12:39:51,617 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:39:51,617 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540782104] [2021-11-23 12:39:51,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:39:51,618 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:39:51,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:39:51,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:39:51,680 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:39:51,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540782104] [2021-11-23 12:39:51,680 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1540782104] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:39:51,681 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:39:51,681 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 12:39:51,681 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093655153] [2021-11-23 12:39:51,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:39:51,682 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 12:39:51,682 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:39:51,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 12:39:51,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 12:39:51,683 INFO L87 Difference]: Start difference. First operand 20582 states and 36826 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:39:52,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:39:52,818 INFO L93 Difference]: Finished difference Result 53574 states and 96148 transitions. [2021-11-23 12:39:52,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 12:39:52,818 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2021-11-23 12:39:52,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:39:52,917 INFO L225 Difference]: With dead ends: 53574 [2021-11-23 12:39:52,917 INFO L226 Difference]: Without dead ends: 35506 [2021-11-23 12:39:52,939 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 12:39:52,940 INFO L933 BasicCegarLoop]: 1308 mSDtfsCounter, 1247 mSDsluCounter, 1295 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1247 SdHoareTripleChecker+Valid, 2603 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 12:39:52,941 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1247 Valid, 2603 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 12:39:52,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35506 states. [2021-11-23 12:39:54,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35506 to 35017. [2021-11-23 12:39:54,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35017 states, 35011 states have (on average 1.793607723286967) internal successors, (62796), 35016 states have internal predecessors, (62796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:39:54,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35017 states to 35017 states and 62796 transitions. [2021-11-23 12:39:54,361 INFO L78 Accepts]: Start accepts. Automaton has 35017 states and 62796 transitions. Word has length 73 [2021-11-23 12:39:54,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:39:54,361 INFO L470 AbstractCegarLoop]: Abstraction has 35017 states and 62796 transitions. [2021-11-23 12:39:54,361 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:39:54,362 INFO L276 IsEmpty]: Start isEmpty. Operand 35017 states and 62796 transitions. [2021-11-23 12:39:54,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-23 12:39:54,373 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:39:54,373 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:39:54,373 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-23 12:39:54,373 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)] === [2021-11-23 12:39:54,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:39:54,374 INFO L85 PathProgramCache]: Analyzing trace with hash 1210263303, now seen corresponding path program 1 times [2021-11-23 12:39:54,374 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:39:54,374 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312928748] [2021-11-23 12:39:54,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:39:54,375 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:39:54,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:39:54,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:39:54,662 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:39:54,662 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312928748] [2021-11-23 12:39:54,662 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [312928748] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:39:54,662 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:39:54,663 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 12:39:54,665 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204087499] [2021-11-23 12:39:54,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:39:54,665 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 12:39:54,666 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:39:54,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 12:39:54,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 12:39:54,667 INFO L87 Difference]: Start difference. First operand 35017 states and 62796 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:39:56,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:39:56,234 INFO L93 Difference]: Finished difference Result 87296 states and 156152 transitions. [2021-11-23 12:39:56,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 12:39:56,235 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2021-11-23 12:39:56,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:39:56,352 INFO L225 Difference]: With dead ends: 87296 [2021-11-23 12:39:56,352 INFO L226 Difference]: Without dead ends: 57001 [2021-11-23 12:39:56,386 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 12:39:56,387 INFO L933 BasicCegarLoop]: 1308 mSDtfsCounter, 1245 mSDsluCounter, 1221 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1245 SdHoareTripleChecker+Valid, 2529 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 12:39:56,388 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1245 Valid, 2529 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 12:39:56,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57001 states. [2021-11-23 12:39:58,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57001 to 56512. [2021-11-23 12:39:58,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56512 states, 56506 states have (on average 1.7834566240753194) internal successors, (100776), 56511 states have internal predecessors, (100776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:39:58,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56512 states to 56512 states and 100776 transitions. [2021-11-23 12:39:58,660 INFO L78 Accepts]: Start accepts. Automaton has 56512 states and 100776 transitions. Word has length 74 [2021-11-23 12:39:58,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:39:58,661 INFO L470 AbstractCegarLoop]: Abstraction has 56512 states and 100776 transitions. [2021-11-23 12:39:58,661 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:39:58,661 INFO L276 IsEmpty]: Start isEmpty. Operand 56512 states and 100776 transitions. [2021-11-23 12:39:58,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-23 12:39:58,673 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:39:58,673 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:39:58,674 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-23 12:39:58,674 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)] === [2021-11-23 12:39:58,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:39:58,674 INFO L85 PathProgramCache]: Analyzing trace with hash 1197201265, now seen corresponding path program 1 times [2021-11-23 12:39:58,675 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:39:58,675 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267513002] [2021-11-23 12:39:58,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:39:58,675 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:39:58,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:39:58,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:39:58,721 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:39:58,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267513002] [2021-11-23 12:39:58,721 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1267513002] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:39:58,721 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:39:58,721 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 12:39:58,722 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331181135] [2021-11-23 12:39:58,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:39:58,722 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 12:39:58,722 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:39:58,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 12:39:58,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 12:39:58,723 INFO L87 Difference]: Start difference. First operand 56512 states and 100776 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:40:01,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:40:01,511 INFO L93 Difference]: Finished difference Result 145457 states and 259363 transitions. [2021-11-23 12:40:01,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 12:40:01,512 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2021-11-23 12:40:01,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:40:01,705 INFO L225 Difference]: With dead ends: 145457 [2021-11-23 12:40:01,705 INFO L226 Difference]: Without dead ends: 95970 [2021-11-23 12:40:01,755 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 12:40:01,760 INFO L933 BasicCegarLoop]: 1308 mSDtfsCounter, 1243 mSDsluCounter, 1248 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1243 SdHoareTripleChecker+Valid, 2556 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 12:40:01,761 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1243 Valid, 2556 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 12:40:01,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95970 states. [2021-11-23 12:40:05,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95970 to 95481. [2021-11-23 12:40:05,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95481 states, 95475 states have (on average 1.77974338832155) internal successors, (169921), 95480 states have internal predecessors, (169921), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:40:05,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95481 states to 95481 states and 169921 transitions. [2021-11-23 12:40:05,717 INFO L78 Accepts]: Start accepts. Automaton has 95481 states and 169921 transitions. Word has length 75 [2021-11-23 12:40:05,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:40:05,718 INFO L470 AbstractCegarLoop]: Abstraction has 95481 states and 169921 transitions. [2021-11-23 12:40:05,718 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:40:05,718 INFO L276 IsEmpty]: Start isEmpty. Operand 95481 states and 169921 transitions. [2021-11-23 12:40:05,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-23 12:40:05,730 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:40:05,730 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:40:05,730 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-23 12:40:05,730 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)] === [2021-11-23 12:40:05,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:40:05,731 INFO L85 PathProgramCache]: Analyzing trace with hash 1227513215, now seen corresponding path program 1 times [2021-11-23 12:40:05,731 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:40:05,731 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468433070] [2021-11-23 12:40:05,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:40:05,732 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:40:05,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:40:05,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:40:05,775 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:40:05,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468433070] [2021-11-23 12:40:05,775 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [468433070] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:40:05,775 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:40:05,775 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 12:40:05,776 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471779696] [2021-11-23 12:40:05,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:40:05,776 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 12:40:05,776 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:40:05,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 12:40:05,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 12:40:05,777 INFO L87 Difference]: Start difference. First operand 95481 states and 169921 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:40:10,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:40:10,935 INFO L93 Difference]: Finished difference Result 263254 states and 469650 transitions. [2021-11-23 12:40:10,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 12:40:10,949 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 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 76 [2021-11-23 12:40:10,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:40:11,278 INFO L225 Difference]: With dead ends: 263254 [2021-11-23 12:40:11,279 INFO L226 Difference]: Without dead ends: 176778 [2021-11-23 12:40:11,346 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 12:40:11,347 INFO L933 BasicCegarLoop]: 1308 mSDtfsCounter, 1241 mSDsluCounter, 1295 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1241 SdHoareTripleChecker+Valid, 2603 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 12:40:11,347 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1241 Valid, 2603 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 12:40:11,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176778 states. [2021-11-23 12:40:17,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176778 to 176289. [2021-11-23 12:40:18,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176289 states, 176283 states have (on average 1.7822421901147587) internal successors, (314179), 176288 states have internal predecessors, (314179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:40:18,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176289 states to 176289 states and 314179 transitions. [2021-11-23 12:40:18,437 INFO L78 Accepts]: Start accepts. Automaton has 176289 states and 314179 transitions. Word has length 76 [2021-11-23 12:40:18,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:40:18,438 INFO L470 AbstractCegarLoop]: Abstraction has 176289 states and 314179 transitions. [2021-11-23 12:40:18,438 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:40:18,438 INFO L276 IsEmpty]: Start isEmpty. Operand 176289 states and 314179 transitions. [2021-11-23 12:40:18,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-23 12:40:18,450 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:40:18,450 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:40:18,450 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-23 12:40:18,450 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)] === [2021-11-23 12:40:18,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:40:18,451 INFO L85 PathProgramCache]: Analyzing trace with hash 1194723393, now seen corresponding path program 1 times [2021-11-23 12:40:18,451 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:40:18,451 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909718192] [2021-11-23 12:40:18,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:40:18,452 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:40:18,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:40:18,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:40:18,495 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:40:18,495 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909718192] [2021-11-23 12:40:18,495 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [909718192] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:40:18,495 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:40:18,496 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 12:40:18,496 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80680453] [2021-11-23 12:40:18,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:40:18,496 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 12:40:18,497 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:40:18,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 12:40:18,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 12:40:18,497 INFO L87 Difference]: Start difference. First operand 176289 states and 314179 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)