./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem13_label07.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fabcf3a-1852-4de0-8926-225701acf7e3/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fabcf3a-1852-4de0-8926-225701acf7e3/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fabcf3a-1852-4de0-8926-225701acf7e3/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fabcf3a-1852-4de0-8926-225701acf7e3/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem13_label07.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fabcf3a-1852-4de0-8926-225701acf7e3/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fabcf3a-1852-4de0-8926-225701acf7e3/bin/uautomizer-ug76WZFUDN --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 c6eeba0e1c333b0671bbfcf3662adf7139859c1a965a716dd9b28c849af19818 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-6b4ec56 [2022-11-20 11:42:21,108 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 11:42:21,111 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 11:42:21,140 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 11:42:21,141 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 11:42:21,142 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 11:42:21,143 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 11:42:21,145 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 11:42:21,147 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 11:42:21,148 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 11:42:21,149 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 11:42:21,151 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 11:42:21,151 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 11:42:21,152 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 11:42:21,154 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 11:42:21,155 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 11:42:21,156 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 11:42:21,157 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 11:42:21,159 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 11:42:21,161 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 11:42:21,163 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 11:42:21,169 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 11:42:21,171 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 11:42:21,172 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 11:42:21,176 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 11:42:21,177 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 11:42:21,177 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 11:42:21,178 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 11:42:21,179 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 11:42:21,180 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 11:42:21,180 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 11:42:21,181 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 11:42:21,182 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 11:42:21,183 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 11:42:21,184 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 11:42:21,185 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 11:42:21,186 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 11:42:21,186 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 11:42:21,186 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 11:42:21,187 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 11:42:21,188 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 11:42:21,189 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fabcf3a-1852-4de0-8926-225701acf7e3/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-20 11:42:21,213 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 11:42:21,214 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 11:42:21,214 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 11:42:21,214 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 11:42:21,215 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 11:42:21,215 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 11:42:21,216 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 11:42:21,216 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 11:42:21,216 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 11:42:21,217 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 11:42:21,217 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 11:42:21,217 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 11:42:21,218 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 11:42:21,218 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 11:42:21,218 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 11:42:21,218 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 11:42:21,219 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 11:42:21,219 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 11:42:21,219 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 11:42:21,219 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 11:42:21,219 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 11:42:21,220 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 11:42:21,220 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 11:42:21,220 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 11:42:21,220 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:42:21,221 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 11:42:21,221 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 11:42:21,221 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 11:42:21,221 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 11:42:21,221 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 11:42:21,222 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 11:42:21,222 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 11:42:21,222 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 11:42:21,222 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_6fabcf3a-1852-4de0-8926-225701acf7e3/bin/uautomizer-ug76WZFUDN/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fabcf3a-1852-4de0-8926-225701acf7e3/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c6eeba0e1c333b0671bbfcf3662adf7139859c1a965a716dd9b28c849af19818 [2022-11-20 11:42:21,452 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 11:42:21,483 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 11:42:21,486 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 11:42:21,487 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 11:42:21,488 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 11:42:21,490 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fabcf3a-1852-4de0-8926-225701acf7e3/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/eca-rers2012/Problem13_label07.c [2022-11-20 11:42:24,628 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 11:42:25,281 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 11:42:25,281 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fabcf3a-1852-4de0-8926-225701acf7e3/sv-benchmarks/c/eca-rers2012/Problem13_label07.c [2022-11-20 11:42:25,322 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fabcf3a-1852-4de0-8926-225701acf7e3/bin/uautomizer-ug76WZFUDN/data/efba6db03/ec3d50a6c25b4ea6baaa9fcaace3258d/FLAGb9a6aa79d [2022-11-20 11:42:25,339 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fabcf3a-1852-4de0-8926-225701acf7e3/bin/uautomizer-ug76WZFUDN/data/efba6db03/ec3d50a6c25b4ea6baaa9fcaace3258d [2022-11-20 11:42:25,344 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 11:42:25,345 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 11:42:25,347 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 11:42:25,347 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 11:42:25,354 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 11:42:25,355 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:42:25" (1/1) ... [2022-11-20 11:42:25,356 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f2899ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:42:25, skipping insertion in model container [2022-11-20 11:42:25,356 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:42:25" (1/1) ... [2022-11-20 11:42:25,364 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 11:42:25,511 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 11:42:25,804 WARN L237 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_6fabcf3a-1852-4de0-8926-225701acf7e3/sv-benchmarks/c/eca-rers2012/Problem13_label07.c[3249,3262] [2022-11-20 11:42:26,955 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:42:26,970 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 11:42:27,000 WARN L237 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_6fabcf3a-1852-4de0-8926-225701acf7e3/sv-benchmarks/c/eca-rers2012/Problem13_label07.c[3249,3262] [2022-11-20 11:42:27,686 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:42:27,713 INFO L208 MainTranslator]: Completed translation [2022-11-20 11:42:27,713 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:42:27 WrapperNode [2022-11-20 11:42:27,714 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 11:42:27,716 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 11:42:27,717 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 11:42:27,717 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 11:42:27,725 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:42:27" (1/1) ... [2022-11-20 11:42:27,804 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:42:27" (1/1) ... [2022-11-20 11:42:28,584 INFO L138 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 5583 [2022-11-20 11:42:28,585 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 11:42:28,585 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 11:42:28,586 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 11:42:28,586 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 11:42:28,610 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:42:27" (1/1) ... [2022-11-20 11:42:28,611 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:42:27" (1/1) ... [2022-11-20 11:42:28,724 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:42:27" (1/1) ... [2022-11-20 11:42:28,725 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:42:27" (1/1) ... [2022-11-20 11:42:28,995 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:42:27" (1/1) ... [2022-11-20 11:42:29,043 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:42:27" (1/1) ... [2022-11-20 11:42:29,086 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:42:27" (1/1) ... [2022-11-20 11:42:29,133 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:42:27" (1/1) ... [2022-11-20 11:42:29,245 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 11:42:29,256 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 11:42:29,257 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 11:42:29,257 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 11:42:29,258 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:42:27" (1/1) ... [2022-11-20 11:42:29,264 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:42:29,381 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fabcf3a-1852-4de0-8926-225701acf7e3/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:42:29,400 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fabcf3a-1852-4de0-8926-225701acf7e3/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 11:42:29,402 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fabcf3a-1852-4de0-8926-225701acf7e3/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 11:42:29,450 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 11:42:29,450 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 11:42:29,450 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 11:42:29,450 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 11:42:29,525 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 11:42:29,527 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 11:42:36,261 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 11:42:36,275 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 11:42:36,275 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-20 11:42:36,279 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:42:36 BoogieIcfgContainer [2022-11-20 11:42:36,279 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 11:42:36,282 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 11:42:36,282 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 11:42:36,285 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 11:42:36,286 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 11:42:25" (1/3) ... [2022-11-20 11:42:36,287 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b291934 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:42:36, skipping insertion in model container [2022-11-20 11:42:36,287 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:42:27" (2/3) ... [2022-11-20 11:42:36,287 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b291934 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:42:36, skipping insertion in model container [2022-11-20 11:42:36,288 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:42:36" (3/3) ... [2022-11-20 11:42:36,289 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label07.c [2022-11-20 11:42:36,311 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 11:42:36,311 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 11:42:36,393 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 11:42:36,400 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@4b71820a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 11:42:36,400 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-20 11:42:36,413 INFO L276 IsEmpty]: Start isEmpty. Operand has 1098 states, 1096 states have (on average 1.8275547445255473) internal successors, (2003), 1097 states have internal predecessors, (2003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:42:36,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-20 11:42:36,422 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:42:36,423 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:42:36,423 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:42:36,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:42:36,433 INFO L85 PathProgramCache]: Analyzing trace with hash -85512855, now seen corresponding path program 1 times [2022-11-20 11:42:36,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:42:36,443 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918767427] [2022-11-20 11:42:36,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:42:36,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:42:36,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:42:36,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:42:36,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:42:36,730 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918767427] [2022-11-20 11:42:36,731 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918767427] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:42:36,732 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:42:36,732 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 11:42:36,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985092421] [2022-11-20 11:42:36,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:42:36,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:42:36,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:42:36,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:42:36,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:42:36,772 INFO L87 Difference]: Start difference. First operand has 1098 states, 1096 states have (on average 1.8275547445255473) internal successors, (2003), 1097 states have internal predecessors, (2003), 0 states have call successors, (0), 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 7.0) internal successors, (21), 2 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:42:42,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:42:42,746 INFO L93 Difference]: Finished difference Result 3082 states and 5689 transitions. [2022-11-20 11:42:42,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:42:42,749 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 2 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2022-11-20 11:42:42,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:42:42,789 INFO L225 Difference]: With dead ends: 3082 [2022-11-20 11:42:42,789 INFO L226 Difference]: Without dead ends: 1899 [2022-11-20 11:42:42,800 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:42:42,807 INFO L413 NwaCegarLoop]: 470 mSDtfsCounter, 1018 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 2955 mSolverCounterSat, 599 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1018 SdHoareTripleChecker+Valid, 641 SdHoareTripleChecker+Invalid, 3554 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 599 IncrementalHoareTripleChecker+Valid, 2955 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2022-11-20 11:42:42,811 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1018 Valid, 641 Invalid, 3554 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [599 Valid, 2955 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time] [2022-11-20 11:42:42,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1899 states. [2022-11-20 11:42:42,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1899 to 1894. [2022-11-20 11:42:42,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1894 states, 1893 states have (on average 1.7374537770734284) internal successors, (3289), 1893 states have internal predecessors, (3289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:42:42,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1894 states to 1894 states and 3289 transitions. [2022-11-20 11:42:42,978 INFO L78 Accepts]: Start accepts. Automaton has 1894 states and 3289 transitions. Word has length 21 [2022-11-20 11:42:42,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:42:42,979 INFO L495 AbstractCegarLoop]: Abstraction has 1894 states and 3289 transitions. [2022-11-20 11:42:42,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 2 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:42:42,980 INFO L276 IsEmpty]: Start isEmpty. Operand 1894 states and 3289 transitions. [2022-11-20 11:42:42,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-11-20 11:42:42,982 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:42:42,982 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:42:42,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 11:42:42,983 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:42:42,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:42:42,984 INFO L85 PathProgramCache]: Analyzing trace with hash -774471582, now seen corresponding path program 1 times [2022-11-20 11:42:42,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:42:42,985 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545060468] [2022-11-20 11:42:42,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:42:42,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:42:43,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:42:43,225 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:42:43,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:42:43,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545060468] [2022-11-20 11:42:43,227 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [545060468] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:42:43,228 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:42:43,228 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 11:42:43,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448918083] [2022-11-20 11:42:43,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:42:43,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:42:43,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:42:43,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:42:43,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:42:43,232 INFO L87 Difference]: Start difference. First operand 1894 states and 3289 transitions. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 2 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:42:48,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:42:48,442 INFO L93 Difference]: Finished difference Result 5384 states and 9441 transitions. [2022-11-20 11:42:48,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:42:48,443 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 2 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2022-11-20 11:42:48,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:42:48,456 INFO L225 Difference]: With dead ends: 5384 [2022-11-20 11:42:48,457 INFO L226 Difference]: Without dead ends: 3492 [2022-11-20 11:42:48,460 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:42:48,461 INFO L413 NwaCegarLoop]: 860 mSDtfsCounter, 922 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 2310 mSolverCounterSat, 879 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 922 SdHoareTripleChecker+Valid, 1013 SdHoareTripleChecker+Invalid, 3189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 879 IncrementalHoareTripleChecker+Valid, 2310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:42:48,462 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [922 Valid, 1013 Invalid, 3189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [879 Valid, 2310 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2022-11-20 11:42:48,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3492 states. [2022-11-20 11:42:48,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3492 to 3491. [2022-11-20 11:42:48,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3491 states, 3490 states have (on average 1.5383954154727795) internal successors, (5369), 3490 states have internal predecessors, (5369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:42:48,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3491 states to 3491 states and 5369 transitions. [2022-11-20 11:42:48,549 INFO L78 Accepts]: Start accepts. Automaton has 3491 states and 5369 transitions. Word has length 86 [2022-11-20 11:42:48,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:42:48,550 INFO L495 AbstractCegarLoop]: Abstraction has 3491 states and 5369 transitions. [2022-11-20 11:42:48,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 2 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:42:48,551 INFO L276 IsEmpty]: Start isEmpty. Operand 3491 states and 5369 transitions. [2022-11-20 11:42:48,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-11-20 11:42:48,553 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:42:48,553 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:42:48,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 11:42:48,554 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:42:48,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:42:48,554 INFO L85 PathProgramCache]: Analyzing trace with hash 1608126599, now seen corresponding path program 1 times [2022-11-20 11:42:48,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:42:48,555 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067214107] [2022-11-20 11:42:48,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:42:48,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:42:48,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:42:48,755 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:42:48,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:42:48,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067214107] [2022-11-20 11:42:48,756 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2067214107] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:42:48,756 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:42:48,757 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 11:42:48,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874568431] [2022-11-20 11:42:48,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:42:48,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:42:48,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:42:48,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:42:48,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:42:48,759 INFO L87 Difference]: Start difference. First operand 3491 states and 5369 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:42:53,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:42:53,795 INFO L93 Difference]: Finished difference Result 10169 states and 15700 transitions. [2022-11-20 11:42:53,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:42:53,795 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2022-11-20 11:42:53,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:42:53,824 INFO L225 Difference]: With dead ends: 10169 [2022-11-20 11:42:53,825 INFO L226 Difference]: Without dead ends: 6680 [2022-11-20 11:42:53,831 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:42:53,832 INFO L413 NwaCegarLoop]: 714 mSDtfsCounter, 977 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 2533 mSolverCounterSat, 775 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 977 SdHoareTripleChecker+Valid, 847 SdHoareTripleChecker+Invalid, 3308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 775 IncrementalHoareTripleChecker+Valid, 2533 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2022-11-20 11:42:53,833 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [977 Valid, 847 Invalid, 3308 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [775 Valid, 2533 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2022-11-20 11:42:53,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6680 states. [2022-11-20 11:42:53,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6680 to 6669. [2022-11-20 11:42:54,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6669 states, 6668 states have (on average 1.375224955008998) internal successors, (9170), 6668 states have internal predecessors, (9170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:42:54,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6669 states to 6669 states and 9170 transitions. [2022-11-20 11:42:54,027 INFO L78 Accepts]: Start accepts. Automaton has 6669 states and 9170 transitions. Word has length 88 [2022-11-20 11:42:54,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:42:54,029 INFO L495 AbstractCegarLoop]: Abstraction has 6669 states and 9170 transitions. [2022-11-20 11:42:54,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:42:54,029 INFO L276 IsEmpty]: Start isEmpty. Operand 6669 states and 9170 transitions. [2022-11-20 11:42:54,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-11-20 11:42:54,038 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:42:54,038 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:42:54,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 11:42:54,040 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:42:54,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:42:54,043 INFO L85 PathProgramCache]: Analyzing trace with hash -881651307, now seen corresponding path program 1 times [2022-11-20 11:42:54,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:42:54,044 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992351308] [2022-11-20 11:42:54,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:42:54,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:42:54,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:42:54,771 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:42:54,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:42:54,771 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992351308] [2022-11-20 11:42:54,771 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1992351308] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:42:54,771 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:42:54,772 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 11:42:54,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620408313] [2022-11-20 11:42:54,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:42:54,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:42:54,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:42:54,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:42:54,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:42:54,774 INFO L87 Difference]: Start difference. First operand 6669 states and 9170 transitions. Second operand has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:42:58,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:42:58,840 INFO L93 Difference]: Finished difference Result 14123 states and 19185 transitions. [2022-11-20 11:42:58,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:42:58,840 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 132 [2022-11-20 11:42:58,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:42:58,868 INFO L225 Difference]: With dead ends: 14123 [2022-11-20 11:42:58,868 INFO L226 Difference]: Without dead ends: 7456 [2022-11-20 11:42:58,877 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:42:58,879 INFO L413 NwaCegarLoop]: 1086 mSDtfsCounter, 678 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 2523 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 678 SdHoareTripleChecker+Valid, 1215 SdHoareTripleChecker+Invalid, 2577 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 2523 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-11-20 11:42:58,879 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [678 Valid, 1215 Invalid, 2577 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 2523 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2022-11-20 11:42:58,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7456 states. [2022-11-20 11:42:59,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7456 to 7456. [2022-11-20 11:42:59,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7456 states, 7455 states have (on average 1.3362843729040912) internal successors, (9962), 7455 states have internal predecessors, (9962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:42:59,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7456 states to 7456 states and 9962 transitions. [2022-11-20 11:42:59,034 INFO L78 Accepts]: Start accepts. Automaton has 7456 states and 9962 transitions. Word has length 132 [2022-11-20 11:42:59,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:42:59,035 INFO L495 AbstractCegarLoop]: Abstraction has 7456 states and 9962 transitions. [2022-11-20 11:42:59,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:42:59,035 INFO L276 IsEmpty]: Start isEmpty. Operand 7456 states and 9962 transitions. [2022-11-20 11:42:59,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-11-20 11:42:59,037 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:42:59,037 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:42:59,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 11:42:59,038 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:42:59,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:42:59,038 INFO L85 PathProgramCache]: Analyzing trace with hash 2047768511, now seen corresponding path program 1 times [2022-11-20 11:42:59,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:42:59,039 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497471542] [2022-11-20 11:42:59,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:42:59,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:42:59,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:42:59,605 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:42:59,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:42:59,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497471542] [2022-11-20 11:42:59,606 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [497471542] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:42:59,606 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1395550833] [2022-11-20 11:42:59,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:42:59,606 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:42:59,607 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fabcf3a-1852-4de0-8926-225701acf7e3/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:42:59,611 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fabcf3a-1852-4de0-8926-225701acf7e3/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:42:59,641 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fabcf3a-1852-4de0-8926-225701acf7e3/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 11:42:59,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:42:59,746 INFO L263 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 11:42:59,753 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:43:00,128 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-20 11:43:00,128 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:43:00,129 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1395550833] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:43:00,129 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 11:43:00,129 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2022-11-20 11:43:00,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164034118] [2022-11-20 11:43:00,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:43:00,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:43:00,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:43:00,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:43:00,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:43:00,134 INFO L87 Difference]: Start difference. First operand 7456 states and 9962 transitions. Second operand has 3 states, 3 states have (on average 43.0) internal successors, (129), 2 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:43:05,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:43:05,011 INFO L93 Difference]: Finished difference Result 19656 states and 26991 transitions. [2022-11-20 11:43:05,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:43:05,012 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 2 states have internal predecessors, (129), 0 states have call successors, (0), 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 146 [2022-11-20 11:43:05,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:43:05,052 INFO L225 Difference]: With dead ends: 19656 [2022-11-20 11:43:05,053 INFO L226 Difference]: Without dead ends: 12989 [2022-11-20 11:43:05,062 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:43:05,063 INFO L413 NwaCegarLoop]: 1071 mSDtfsCounter, 737 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 2526 mSolverCounterSat, 779 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 737 SdHoareTripleChecker+Valid, 1222 SdHoareTripleChecker+Invalid, 3305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 779 IncrementalHoareTripleChecker+Valid, 2526 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2022-11-20 11:43:05,063 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [737 Valid, 1222 Invalid, 3305 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [779 Valid, 2526 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2022-11-20 11:43:05,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12989 states. [2022-11-20 11:43:05,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12989 to 12972. [2022-11-20 11:43:05,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12972 states, 12971 states have (on average 1.235910878112713) internal successors, (16031), 12971 states have internal predecessors, (16031), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:43:05,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12972 states to 12972 states and 16031 transitions. [2022-11-20 11:43:05,307 INFO L78 Accepts]: Start accepts. Automaton has 12972 states and 16031 transitions. Word has length 146 [2022-11-20 11:43:05,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:43:05,315 INFO L495 AbstractCegarLoop]: Abstraction has 12972 states and 16031 transitions. [2022-11-20 11:43:05,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 2 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:43:05,316 INFO L276 IsEmpty]: Start isEmpty. Operand 12972 states and 16031 transitions. [2022-11-20 11:43:05,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2022-11-20 11:43:05,323 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:43:05,323 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:43:05,335 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fabcf3a-1852-4de0-8926-225701acf7e3/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-20 11:43:05,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fabcf3a-1852-4de0-8926-225701acf7e3/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:43:05,529 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:43:05,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:43:05,529 INFO L85 PathProgramCache]: Analyzing trace with hash 482289442, now seen corresponding path program 1 times [2022-11-20 11:43:05,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:43:05,530 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065992433] [2022-11-20 11:43:05,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:43:05,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:43:05,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:43:05,986 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2022-11-20 11:43:05,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:43:05,987 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065992433] [2022-11-20 11:43:05,988 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2065992433] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:43:05,988 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:43:05,988 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 11:43:05,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606383916] [2022-11-20 11:43:05,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:43:05,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:43:05,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:43:05,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:43:05,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:43:05,992 INFO L87 Difference]: Start difference. First operand 12972 states and 16031 transitions. Second operand has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 2 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:43:11,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:43:11,106 INFO L93 Difference]: Finished difference Result 22792 states and 28651 transitions. [2022-11-20 11:43:11,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:43:11,107 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 2 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 233 [2022-11-20 11:43:11,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:43:11,136 INFO L225 Difference]: With dead ends: 22792 [2022-11-20 11:43:11,136 INFO L226 Difference]: Without dead ends: 12980 [2022-11-20 11:43:11,148 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:43:11,149 INFO L413 NwaCegarLoop]: 1027 mSDtfsCounter, 728 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 2714 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 728 SdHoareTripleChecker+Valid, 1211 SdHoareTripleChecker+Invalid, 2718 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 2714 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2022-11-20 11:43:11,150 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [728 Valid, 1211 Invalid, 2718 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 2714 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2022-11-20 11:43:11,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12980 states. [2022-11-20 11:43:11,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12980 to 12972. [2022-11-20 11:43:11,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12972 states, 12971 states have (on average 1.2347544522396114) internal successors, (16016), 12971 states have internal predecessors, (16016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:43:11,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12972 states to 12972 states and 16016 transitions. [2022-11-20 11:43:11,368 INFO L78 Accepts]: Start accepts. Automaton has 12972 states and 16016 transitions. Word has length 233 [2022-11-20 11:43:11,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:43:11,369 INFO L495 AbstractCegarLoop]: Abstraction has 12972 states and 16016 transitions. [2022-11-20 11:43:11,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 2 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:43:11,370 INFO L276 IsEmpty]: Start isEmpty. Operand 12972 states and 16016 transitions. [2022-11-20 11:43:11,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2022-11-20 11:43:11,374 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:43:11,374 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:43:11,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-20 11:43:11,375 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:43:11,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:43:11,375 INFO L85 PathProgramCache]: Analyzing trace with hash 447702536, now seen corresponding path program 1 times [2022-11-20 11:43:11,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:43:11,376 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819347230] [2022-11-20 11:43:11,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:43:11,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:43:11,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:43:11,617 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 125 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:43:11,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:43:11,617 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819347230] [2022-11-20 11:43:11,617 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [819347230] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:43:11,618 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:43:11,618 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:43:11,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655069984] [2022-11-20 11:43:11,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:43:11,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:43:11,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:43:11,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:43:11,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:43:11,624 INFO L87 Difference]: Start difference. First operand 12972 states and 16016 transitions. Second operand has 3 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:43:17,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:43:17,405 INFO L93 Difference]: Finished difference Result 36166 states and 45134 transitions. [2022-11-20 11:43:17,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:43:17,406 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 states have internal predecessors, (235), 0 states have call successors, (0), 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 235 [2022-11-20 11:43:17,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:43:17,458 INFO L225 Difference]: With dead ends: 36166 [2022-11-20 11:43:17,459 INFO L226 Difference]: Without dead ends: 23196 [2022-11-20 11:43:17,472 INFO L412 NwaCegarLoop]: 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 [2022-11-20 11:43:17,473 INFO L413 NwaCegarLoop]: 1851 mSDtfsCounter, 842 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 2479 mSolverCounterSat, 807 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 842 SdHoareTripleChecker+Valid, 1988 SdHoareTripleChecker+Invalid, 3286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 807 IncrementalHoareTripleChecker+Valid, 2479 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2022-11-20 11:43:17,473 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [842 Valid, 1988 Invalid, 3286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [807 Valid, 2479 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time] [2022-11-20 11:43:17,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23196 states. [2022-11-20 11:43:17,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23196 to 23191. [2022-11-20 11:43:17,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23191 states, 23190 states have (on average 1.1870202673566193) internal successors, (27527), 23190 states have internal predecessors, (27527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:43:17,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23191 states to 23191 states and 27527 transitions. [2022-11-20 11:43:17,861 INFO L78 Accepts]: Start accepts. Automaton has 23191 states and 27527 transitions. Word has length 235 [2022-11-20 11:43:17,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:43:17,862 INFO L495 AbstractCegarLoop]: Abstraction has 23191 states and 27527 transitions. [2022-11-20 11:43:17,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:43:17,862 INFO L276 IsEmpty]: Start isEmpty. Operand 23191 states and 27527 transitions. [2022-11-20 11:43:17,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2022-11-20 11:43:17,866 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:43:17,867 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:43:17,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-20 11:43:17,867 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:43:17,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:43:17,868 INFO L85 PathProgramCache]: Analyzing trace with hash 1872557880, now seen corresponding path program 1 times [2022-11-20 11:43:17,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:43:17,869 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61700883] [2022-11-20 11:43:17,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:43:17,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:43:17,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:43:18,122 INFO L134 CoverageAnalysis]: Checked inductivity of 261 backedges. 242 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-20 11:43:18,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:43:18,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61700883] [2022-11-20 11:43:18,122 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [61700883] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:43:18,123 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:43:18,123 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:43:18,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732206475] [2022-11-20 11:43:18,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:43:18,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:43:18,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:43:18,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:43:18,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:43:18,125 INFO L87 Difference]: Start difference. First operand 23191 states and 27527 transitions. Second operand has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:43:23,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:43:23,100 INFO L93 Difference]: Finished difference Result 56620 states and 68544 transitions. [2022-11-20 11:43:23,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:43:23,105 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 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 257 [2022-11-20 11:43:23,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:43:23,164 INFO L225 Difference]: With dead ends: 56620 [2022-11-20 11:43:23,165 INFO L226 Difference]: Without dead ends: 34218 [2022-11-20 11:43:23,181 INFO L412 NwaCegarLoop]: 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 [2022-11-20 11:43:23,181 INFO L413 NwaCegarLoop]: 810 mSDtfsCounter, 882 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 2384 mSolverCounterSat, 903 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 882 SdHoareTripleChecker+Valid, 928 SdHoareTripleChecker+Invalid, 3287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 903 IncrementalHoareTripleChecker+Valid, 2384 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2022-11-20 11:43:23,182 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [882 Valid, 928 Invalid, 3287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [903 Valid, 2384 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2022-11-20 11:43:23,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34218 states. [2022-11-20 11:43:23,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34218 to 33423. [2022-11-20 11:43:23,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33423 states, 33422 states have (on average 1.1722518101849082) internal successors, (39179), 33422 states have internal predecessors, (39179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:43:23,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33423 states to 33423 states and 39179 transitions. [2022-11-20 11:43:23,616 INFO L78 Accepts]: Start accepts. Automaton has 33423 states and 39179 transitions. Word has length 257 [2022-11-20 11:43:23,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:43:23,616 INFO L495 AbstractCegarLoop]: Abstraction has 33423 states and 39179 transitions. [2022-11-20 11:43:23,617 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:43:23,617 INFO L276 IsEmpty]: Start isEmpty. Operand 33423 states and 39179 transitions. [2022-11-20 11:43:23,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2022-11-20 11:43:23,623 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:43:23,623 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:43:23,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-20 11:43:23,623 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:43:23,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:43:23,624 INFO L85 PathProgramCache]: Analyzing trace with hash 1002442702, now seen corresponding path program 1 times [2022-11-20 11:43:23,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:43:23,624 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586754944] [2022-11-20 11:43:23,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:43:23,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:43:23,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:43:23,946 INFO L134 CoverageAnalysis]: Checked inductivity of 332 backedges. 313 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-20 11:43:23,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:43:23,947 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586754944] [2022-11-20 11:43:23,947 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [586754944] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:43:23,947 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:43:23,947 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:43:23,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767412828] [2022-11-20 11:43:23,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:43:23,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:43:23,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:43:23,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:43:23,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:43:23,950 INFO L87 Difference]: Start difference. First operand 33423 states and 39179 transitions. Second operand has 4 states, 4 states have (on average 72.75) internal successors, (291), 3 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:43:34,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:43:34,260 INFO L93 Difference]: Finished difference Result 118210 states and 138562 transitions. [2022-11-20 11:43:34,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 11:43:34,261 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 72.75) internal successors, (291), 3 states have internal predecessors, (291), 0 states have call successors, (0), 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 309 [2022-11-20 11:43:34,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:43:34,396 INFO L225 Difference]: With dead ends: 118210 [2022-11-20 11:43:34,397 INFO L226 Difference]: Without dead ends: 85576 [2022-11-20 11:43:34,619 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:43:34,620 INFO L413 NwaCegarLoop]: 867 mSDtfsCounter, 1700 mSDsluCounter, 198 mSDsCounter, 0 mSdLazyCounter, 6259 mSolverCounterSat, 995 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1700 SdHoareTripleChecker+Valid, 1065 SdHoareTripleChecker+Invalid, 7254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 995 IncrementalHoareTripleChecker+Valid, 6259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.7s IncrementalHoareTripleChecker+Time [2022-11-20 11:43:34,620 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1700 Valid, 1065 Invalid, 7254 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [995 Valid, 6259 Invalid, 0 Unknown, 0 Unchecked, 9.7s Time] [2022-11-20 11:43:34,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85576 states. [2022-11-20 11:43:35,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85576 to 82306. [2022-11-20 11:43:35,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82306 states, 82305 states have (on average 1.1536723163841809) internal successors, (94953), 82305 states have internal predecessors, (94953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:43:35,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82306 states to 82306 states and 94953 transitions. [2022-11-20 11:43:35,894 INFO L78 Accepts]: Start accepts. Automaton has 82306 states and 94953 transitions. Word has length 309 [2022-11-20 11:43:35,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:43:35,895 INFO L495 AbstractCegarLoop]: Abstraction has 82306 states and 94953 transitions. [2022-11-20 11:43:35,895 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 72.75) internal successors, (291), 3 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:43:35,895 INFO L276 IsEmpty]: Start isEmpty. Operand 82306 states and 94953 transitions. [2022-11-20 11:43:35,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2022-11-20 11:43:35,903 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:43:35,904 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:43:35,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-20 11:43:35,905 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:43:35,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:43:35,906 INFO L85 PathProgramCache]: Analyzing trace with hash -1986433391, now seen corresponding path program 1 times [2022-11-20 11:43:35,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:43:35,906 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059672676] [2022-11-20 11:43:35,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:43:35,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:43:36,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:43:38,103 INFO L134 CoverageAnalysis]: Checked inductivity of 298 backedges. 166 proven. 113 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-20 11:43:38,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:43:38,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059672676] [2022-11-20 11:43:38,104 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1059672676] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:43:38,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [141209819] [2022-11-20 11:43:38,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:43:38,105 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:43:38,105 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fabcf3a-1852-4de0-8926-225701acf7e3/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:43:38,108 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fabcf3a-1852-4de0-8926-225701acf7e3/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:43:38,127 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fabcf3a-1852-4de0-8926-225701acf7e3/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 11:43:38,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:43:38,274 INFO L263 TraceCheckSpWp]: Trace formula consists of 476 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 11:43:38,293 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:43:38,419 INFO L134 CoverageAnalysis]: Checked inductivity of 298 backedges. 185 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2022-11-20 11:43:38,419 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:43:38,419 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [141209819] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:43:38,420 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 11:43:38,420 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2022-11-20 11:43:38,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733519882] [2022-11-20 11:43:38,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:43:38,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:43:38,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:43:38,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:43:38,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-20 11:43:38,423 INFO L87 Difference]: Start difference. First operand 82306 states and 94953 transitions. Second operand has 3 states, 3 states have (on average 71.66666666666667) internal successors, (215), 3 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:43:43,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:43:43,132 INFO L93 Difference]: Finished difference Result 163812 states and 189102 transitions. [2022-11-20 11:43:43,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:43:43,133 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 71.66666666666667) internal successors, (215), 3 states have internal predecessors, (215), 0 states have call successors, (0), 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 327 [2022-11-20 11:43:43,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:43:43,272 INFO L225 Difference]: With dead ends: 163812 [2022-11-20 11:43:43,272 INFO L226 Difference]: Without dead ends: 82295 [2022-11-20 11:43:43,307 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 333 GetRequests, 326 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-20 11:43:43,308 INFO L413 NwaCegarLoop]: 682 mSDtfsCounter, 1073 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 2388 mSolverCounterSat, 532 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1073 SdHoareTripleChecker+Valid, 816 SdHoareTripleChecker+Invalid, 2920 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 532 IncrementalHoareTripleChecker+Valid, 2388 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:43:43,310 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1073 Valid, 816 Invalid, 2920 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [532 Valid, 2388 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2022-11-20 11:43:43,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82295 states. [2022-11-20 11:43:44,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82295 to 82292. [2022-11-20 11:43:44,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82292 states, 82291 states have (on average 1.1159057491098663) internal successors, (91829), 82291 states have internal predecessors, (91829), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:43:44,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82292 states to 82292 states and 91829 transitions. [2022-11-20 11:43:44,539 INFO L78 Accepts]: Start accepts. Automaton has 82292 states and 91829 transitions. Word has length 327 [2022-11-20 11:43:44,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:43:44,540 INFO L495 AbstractCegarLoop]: Abstraction has 82292 states and 91829 transitions. [2022-11-20 11:43:44,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 71.66666666666667) internal successors, (215), 3 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:43:44,541 INFO L276 IsEmpty]: Start isEmpty. Operand 82292 states and 91829 transitions. [2022-11-20 11:43:44,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 377 [2022-11-20 11:43:44,744 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:43:44,745 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:43:44,767 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fabcf3a-1852-4de0-8926-225701acf7e3/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-20 11:43:44,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fabcf3a-1852-4de0-8926-225701acf7e3/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-20 11:43:44,946 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:43:44,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:43:44,946 INFO L85 PathProgramCache]: Analyzing trace with hash -832537303, now seen corresponding path program 1 times [2022-11-20 11:43:44,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:43:44,946 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653522085] [2022-11-20 11:43:44,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:43:44,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:43:45,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:43:46,762 INFO L134 CoverageAnalysis]: Checked inductivity of 392 backedges. 260 proven. 113 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-20 11:43:46,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:43:46,762 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653522085] [2022-11-20 11:43:46,762 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1653522085] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:43:46,762 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [334935379] [2022-11-20 11:43:46,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:43:46,763 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:43:46,763 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fabcf3a-1852-4de0-8926-225701acf7e3/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:43:46,774 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fabcf3a-1852-4de0-8926-225701acf7e3/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:43:46,780 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fabcf3a-1852-4de0-8926-225701acf7e3/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 11:43:46,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:43:46,956 INFO L263 TraceCheckSpWp]: Trace formula consists of 518 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 11:43:46,960 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:43:47,165 INFO L134 CoverageAnalysis]: Checked inductivity of 392 backedges. 260 proven. 0 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2022-11-20 11:43:47,166 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:43:47,166 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [334935379] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:43:47,166 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 11:43:47,166 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2022-11-20 11:43:47,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997271467] [2022-11-20 11:43:47,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:43:47,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:43:47,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:43:47,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:43:47,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-20 11:43:47,168 INFO L87 Difference]: Start difference. First operand 82292 states and 91829 transitions. Second operand has 3 states, 3 states have (on average 82.0) internal successors, (246), 3 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:43:51,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:43:51,658 INFO L93 Difference]: Finished difference Result 163793 states and 182863 transitions. [2022-11-20 11:43:51,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:43:51,659 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 82.0) internal successors, (246), 3 states have internal predecessors, (246), 0 states have call successors, (0), 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 376 [2022-11-20 11:43:51,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:43:51,755 INFO L225 Difference]: With dead ends: 163793 [2022-11-20 11:43:51,756 INFO L226 Difference]: Without dead ends: 82290 [2022-11-20 11:43:51,791 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 382 GetRequests, 375 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-20 11:43:51,791 INFO L413 NwaCegarLoop]: 1344 mSDtfsCounter, 1084 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 2463 mSolverCounterSat, 444 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1084 SdHoareTripleChecker+Valid, 1424 SdHoareTripleChecker+Invalid, 2907 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 444 IncrementalHoareTripleChecker+Valid, 2463 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-11-20 11:43:51,792 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1084 Valid, 1424 Invalid, 2907 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [444 Valid, 2463 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2022-11-20 11:43:51,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82290 states. [2022-11-20 11:43:52,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82290 to 82289. [2022-11-20 11:43:52,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82289 states, 82288 states have (on average 1.0886277464514875) internal successors, (89581), 82288 states have internal predecessors, (89581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:43:52,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82289 states to 82289 states and 89581 transitions. [2022-11-20 11:43:52,966 INFO L78 Accepts]: Start accepts. Automaton has 82289 states and 89581 transitions. Word has length 376 [2022-11-20 11:43:52,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:43:52,966 INFO L495 AbstractCegarLoop]: Abstraction has 82289 states and 89581 transitions. [2022-11-20 11:43:52,966 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 82.0) internal successors, (246), 3 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:43:52,967 INFO L276 IsEmpty]: Start isEmpty. Operand 82289 states and 89581 transitions. [2022-11-20 11:43:52,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 378 [2022-11-20 11:43:52,974 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:43:52,975 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:43:52,981 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fabcf3a-1852-4de0-8926-225701acf7e3/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-11-20 11:43:53,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fabcf3a-1852-4de0-8926-225701acf7e3/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-20 11:43:53,180 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:43:53,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:43:53,181 INFO L85 PathProgramCache]: Analyzing trace with hash -645209022, now seen corresponding path program 1 times [2022-11-20 11:43:53,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:43:53,181 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184799669] [2022-11-20 11:43:53,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:43:53,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:43:53,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:43:53,805 INFO L134 CoverageAnalysis]: Checked inductivity of 565 backedges. 404 proven. 0 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2022-11-20 11:43:53,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:43:53,805 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184799669] [2022-11-20 11:43:53,806 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [184799669] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:43:53,806 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:43:53,806 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:43:53,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304467321] [2022-11-20 11:43:53,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:43:53,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:43:53,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:43:53,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:43:53,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:43:53,808 INFO L87 Difference]: Start difference. First operand 82289 states and 89581 transitions. Second operand has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:43:59,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:43:59,248 INFO L93 Difference]: Finished difference Result 189767 states and 208222 transitions. [2022-11-20 11:43:59,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:43:59,249 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 377 [2022-11-20 11:43:59,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:43:59,374 INFO L225 Difference]: With dead ends: 189767 [2022-11-20 11:43:59,374 INFO L226 Difference]: Without dead ends: 108267 [2022-11-20 11:43:59,409 INFO L412 NwaCegarLoop]: 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 [2022-11-20 11:43:59,409 INFO L413 NwaCegarLoop]: 822 mSDtfsCounter, 884 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 2419 mSolverCounterSat, 930 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 884 SdHoareTripleChecker+Valid, 904 SdHoareTripleChecker+Invalid, 3349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 930 IncrementalHoareTripleChecker+Valid, 2419 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2022-11-20 11:43:59,410 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [884 Valid, 904 Invalid, 3349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [930 Valid, 2419 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2022-11-20 11:43:59,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108267 states. [2022-11-20 11:44:00,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108267 to 106674. [2022-11-20 11:44:00,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106674 states, 106673 states have (on average 1.092113280773954) internal successors, (116499), 106673 states have internal predecessors, (116499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:44:00,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106674 states to 106674 states and 116499 transitions. [2022-11-20 11:44:00,729 INFO L78 Accepts]: Start accepts. Automaton has 106674 states and 116499 transitions. Word has length 377 [2022-11-20 11:44:00,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:44:00,730 INFO L495 AbstractCegarLoop]: Abstraction has 106674 states and 116499 transitions. [2022-11-20 11:44:00,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:44:00,730 INFO L276 IsEmpty]: Start isEmpty. Operand 106674 states and 116499 transitions. [2022-11-20 11:44:00,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 411 [2022-11-20 11:44:00,738 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:44:00,738 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:44:00,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-20 11:44:00,739 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:44:00,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:44:00,739 INFO L85 PathProgramCache]: Analyzing trace with hash 307251648, now seen corresponding path program 1 times [2022-11-20 11:44:00,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:44:00,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822325129] [2022-11-20 11:44:00,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:44:00,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:44:01,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:44:02,467 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 246 proven. 110 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-20 11:44:02,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:44:02,468 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822325129] [2022-11-20 11:44:02,468 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [822325129] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:44:02,468 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [114350878] [2022-11-20 11:44:02,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:44:02,468 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:44:02,468 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fabcf3a-1852-4de0-8926-225701acf7e3/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:44:02,472 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fabcf3a-1852-4de0-8926-225701acf7e3/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:44:02,495 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fabcf3a-1852-4de0-8926-225701acf7e3/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-20 11:44:02,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:44:02,671 INFO L263 TraceCheckSpWp]: Trace formula consists of 560 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 11:44:02,676 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:44:03,792 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 232 proven. 0 refuted. 0 times theorem prover too weak. 143 trivial. 0 not checked. [2022-11-20 11:44:03,792 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:44:03,793 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [114350878] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:44:03,793 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 11:44:03,793 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2022-11-20 11:44:03,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021971165] [2022-11-20 11:44:03,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:44:03,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:44:03,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:44:03,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:44:03,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:44:03,795 INFO L87 Difference]: Start difference. First operand 106674 states and 116499 transitions. Second operand has 3 states, 3 states have (on average 89.66666666666667) internal successors, (269), 2 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:44:08,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:44:08,621 INFO L93 Difference]: Finished difference Result 206271 states and 225611 transitions. [2022-11-20 11:44:08,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:44:08,621 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 89.66666666666667) internal successors, (269), 2 states have internal predecessors, (269), 0 states have call successors, (0), 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 410 [2022-11-20 11:44:08,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:44:08,741 INFO L225 Difference]: With dead ends: 206271 [2022-11-20 11:44:08,741 INFO L226 Difference]: Without dead ends: 110619 [2022-11-20 11:44:08,779 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 414 GetRequests, 409 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:44:08,779 INFO L413 NwaCegarLoop]: 1033 mSDtfsCounter, 643 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 2462 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 643 SdHoareTripleChecker+Valid, 1167 SdHoareTripleChecker+Invalid, 2575 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 2462 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:44:08,780 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [643 Valid, 1167 Invalid, 2575 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 2462 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2022-11-20 11:44:08,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110619 states. [2022-11-20 11:44:10,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110619 to 109035. [2022-11-20 11:44:10,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109035 states, 109034 states have (on average 1.0828365463983711) internal successors, (118066), 109034 states have internal predecessors, (118066), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:44:10,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109035 states to 109035 states and 118066 transitions. [2022-11-20 11:44:10,240 INFO L78 Accepts]: Start accepts. Automaton has 109035 states and 118066 transitions. Word has length 410 [2022-11-20 11:44:10,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:44:10,240 INFO L495 AbstractCegarLoop]: Abstraction has 109035 states and 118066 transitions. [2022-11-20 11:44:10,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 89.66666666666667) internal successors, (269), 2 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:44:10,240 INFO L276 IsEmpty]: Start isEmpty. Operand 109035 states and 118066 transitions. [2022-11-20 11:44:10,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 470 [2022-11-20 11:44:10,250 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:44:10,250 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:44:10,260 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fabcf3a-1852-4de0-8926-225701acf7e3/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-20 11:44:10,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fabcf3a-1852-4de0-8926-225701acf7e3/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-20 11:44:10,460 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:44:10,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:44:10,460 INFO L85 PathProgramCache]: Analyzing trace with hash -482627801, now seen corresponding path program 1 times [2022-11-20 11:44:10,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:44:10,460 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812986392] [2022-11-20 11:44:10,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:44:10,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:44:10,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:44:10,802 INFO L134 CoverageAnalysis]: Checked inductivity of 660 backedges. 388 proven. 0 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2022-11-20 11:44:10,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:44:10,802 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812986392] [2022-11-20 11:44:10,802 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1812986392] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:44:10,802 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:44:10,803 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:44:10,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289882967] [2022-11-20 11:44:10,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:44:10,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:44:10,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:44:10,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:44:10,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:44:10,805 INFO L87 Difference]: Start difference. First operand 109035 states and 118066 transitions. Second operand has 3 states, 3 states have (on average 95.66666666666667) internal successors, (287), 3 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:44:16,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:44:16,502 INFO L93 Difference]: Finished difference Result 242480 states and 264083 transitions. [2022-11-20 11:44:16,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:44:16,503 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 95.66666666666667) internal successors, (287), 3 states have internal predecessors, (287), 0 states have call successors, (0), 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 469 [2022-11-20 11:44:16,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:44:16,661 INFO L225 Difference]: With dead ends: 242480 [2022-11-20 11:44:16,661 INFO L226 Difference]: Without dead ends: 132660 [2022-11-20 11:44:16,703 INFO L412 NwaCegarLoop]: 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 [2022-11-20 11:44:16,703 INFO L413 NwaCegarLoop]: 1753 mSDtfsCounter, 721 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 2500 mSolverCounterSat, 662 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 721 SdHoareTripleChecker+Valid, 1897 SdHoareTripleChecker+Invalid, 3162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 662 IncrementalHoareTripleChecker+Valid, 2500 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2022-11-20 11:44:16,704 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [721 Valid, 1897 Invalid, 3162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [662 Valid, 2500 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2022-11-20 11:44:16,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132660 states. [2022-11-20 11:44:18,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132660 to 131070. [2022-11-20 11:44:18,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131070 states, 131069 states have (on average 1.0732057160732134) internal successors, (140664), 131069 states have internal predecessors, (140664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:44:18,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131070 states to 131070 states and 140664 transitions. [2022-11-20 11:44:18,512 INFO L78 Accepts]: Start accepts. Automaton has 131070 states and 140664 transitions. Word has length 469 [2022-11-20 11:44:18,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:44:18,512 INFO L495 AbstractCegarLoop]: Abstraction has 131070 states and 140664 transitions. [2022-11-20 11:44:18,512 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 95.66666666666667) internal successors, (287), 3 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:44:18,512 INFO L276 IsEmpty]: Start isEmpty. Operand 131070 states and 140664 transitions. [2022-11-20 11:44:18,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 544 [2022-11-20 11:44:18,527 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:44:18,527 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:44:18,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-20 11:44:18,528 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:44:18,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:44:18,528 INFO L85 PathProgramCache]: Analyzing trace with hash -493778240, now seen corresponding path program 1 times [2022-11-20 11:44:18,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:44:18,529 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91203434] [2022-11-20 11:44:18,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:44:18,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:44:18,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:44:20,126 INFO L134 CoverageAnalysis]: Checked inductivity of 939 backedges. 709 proven. 75 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2022-11-20 11:44:20,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:44:20,126 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91203434] [2022-11-20 11:44:20,126 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [91203434] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:44:20,126 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [111367616] [2022-11-20 11:44:20,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:44:20,127 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:44:20,127 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fabcf3a-1852-4de0-8926-225701acf7e3/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:44:20,128 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fabcf3a-1852-4de0-8926-225701acf7e3/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:44:20,151 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fabcf3a-1852-4de0-8926-225701acf7e3/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-20 11:44:20,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:44:20,368 INFO L263 TraceCheckSpWp]: Trace formula consists of 744 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 11:44:20,653 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:44:21,690 INFO L134 CoverageAnalysis]: Checked inductivity of 939 backedges. 847 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2022-11-20 11:44:21,691 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:44:21,691 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [111367616] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:44:21,691 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 11:44:21,692 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2022-11-20 11:44:21,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372037849] [2022-11-20 11:44:21,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:44:21,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:44:21,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:44:21,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:44:21,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-20 11:44:21,695 INFO L87 Difference]: Start difference. First operand 131070 states and 140664 transitions. Second operand has 4 states, 4 states have (on average 113.25) internal successors, (453), 4 states have internal predecessors, (453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:44:28,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:44:28,224 INFO L93 Difference]: Finished difference Result 248759 states and 267808 transitions. [2022-11-20 11:44:28,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 11:44:28,225 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 113.25) internal successors, (453), 4 states have internal predecessors, (453), 0 states have call successors, (0), 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 543 [2022-11-20 11:44:28,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:44:28,373 INFO L225 Difference]: With dead ends: 248759 [2022-11-20 11:44:28,373 INFO L226 Difference]: Without dead ends: 133437 [2022-11-20 11:44:28,413 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 546 GetRequests, 543 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-20 11:44:28,413 INFO L413 NwaCegarLoop]: 656 mSDtfsCounter, 1683 mSDsluCounter, 249 mSDsCounter, 0 mSdLazyCounter, 4444 mSolverCounterSat, 409 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1683 SdHoareTripleChecker+Valid, 905 SdHoareTripleChecker+Invalid, 4853 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 409 IncrementalHoareTripleChecker+Valid, 4444 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2022-11-20 11:44:28,415 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1683 Valid, 905 Invalid, 4853 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [409 Valid, 4444 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2022-11-20 11:44:28,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133437 states. [2022-11-20 11:44:29,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133437 to 131853. [2022-11-20 11:44:29,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131853 states, 131852 states have (on average 1.072634468950035) internal successors, (141429), 131852 states have internal predecessors, (141429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:44:30,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131853 states to 131853 states and 141429 transitions. [2022-11-20 11:44:30,099 INFO L78 Accepts]: Start accepts. Automaton has 131853 states and 141429 transitions. Word has length 543 [2022-11-20 11:44:30,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:44:30,099 INFO L495 AbstractCegarLoop]: Abstraction has 131853 states and 141429 transitions. [2022-11-20 11:44:30,099 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 113.25) internal successors, (453), 4 states have internal predecessors, (453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:44:30,100 INFO L276 IsEmpty]: Start isEmpty. Operand 131853 states and 141429 transitions. [2022-11-20 11:44:30,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 602 [2022-11-20 11:44:30,114 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:44:30,115 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:44:30,120 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fabcf3a-1852-4de0-8926-225701acf7e3/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-20 11:44:30,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fabcf3a-1852-4de0-8926-225701acf7e3/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:44:30,315 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:44:30,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:44:30,316 INFO L85 PathProgramCache]: Analyzing trace with hash 1371945116, now seen corresponding path program 1 times [2022-11-20 11:44:30,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:44:30,316 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532373343] [2022-11-20 11:44:30,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:44:30,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:44:30,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:44:31,319 INFO L134 CoverageAnalysis]: Checked inductivity of 1059 backedges. 474 proven. 0 refuted. 0 times theorem prover too weak. 585 trivial. 0 not checked. [2022-11-20 11:44:31,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:44:31,320 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532373343] [2022-11-20 11:44:31,320 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1532373343] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:44:31,320 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:44:31,320 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:44:31,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948837957] [2022-11-20 11:44:31,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:44:31,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:44:31,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:44:31,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:44:31,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:44:31,322 INFO L87 Difference]: Start difference. First operand 131853 states and 141429 transitions. Second operand has 3 states, 3 states have (on average 97.0) internal successors, (291), 3 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:44:37,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:44:37,127 INFO L93 Difference]: Finished difference Result 299143 states and 322738 transitions. [2022-11-20 11:44:37,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:44:37,128 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 97.0) internal successors, (291), 3 states have internal predecessors, (291), 0 states have call successors, (0), 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 601 [2022-11-20 11:44:37,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:44:37,351 INFO L225 Difference]: With dead ends: 299143 [2022-11-20 11:44:37,351 INFO L226 Difference]: Without dead ends: 179881 [2022-11-20 11:44:37,407 INFO L412 NwaCegarLoop]: 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 [2022-11-20 11:44:37,408 INFO L413 NwaCegarLoop]: 758 mSDtfsCounter, 917 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 2366 mSolverCounterSat, 816 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 917 SdHoareTripleChecker+Valid, 856 SdHoareTripleChecker+Invalid, 3182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 816 IncrementalHoareTripleChecker+Valid, 2366 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2022-11-20 11:44:37,408 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [917 Valid, 856 Invalid, 3182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [816 Valid, 2366 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2022-11-20 11:44:37,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179881 states. [2022-11-20 11:44:39,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179881 to 148376. [2022-11-20 11:44:39,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148376 states, 148375 states have (on average 1.0655231676495367) internal successors, (158097), 148375 states have internal predecessors, (158097), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:44:39,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148376 states to 148376 states and 158097 transitions. [2022-11-20 11:44:39,668 INFO L78 Accepts]: Start accepts. Automaton has 148376 states and 158097 transitions. Word has length 601 [2022-11-20 11:44:39,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:44:39,668 INFO L495 AbstractCegarLoop]: Abstraction has 148376 states and 158097 transitions. [2022-11-20 11:44:39,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 97.0) internal successors, (291), 3 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:44:39,669 INFO L276 IsEmpty]: Start isEmpty. Operand 148376 states and 158097 transitions. [2022-11-20 11:44:39,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 608 [2022-11-20 11:44:39,683 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:44:39,684 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:44:39,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-20 11:44:39,684 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:44:39,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:44:39,685 INFO L85 PathProgramCache]: Analyzing trace with hash -318205576, now seen corresponding path program 1 times [2022-11-20 11:44:39,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:44:39,685 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185476448] [2022-11-20 11:44:39,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:44:39,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:44:39,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:44:40,675 INFO L134 CoverageAnalysis]: Checked inductivity of 851 backedges. 599 proven. 0 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2022-11-20 11:44:40,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:44:40,676 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185476448] [2022-11-20 11:44:40,676 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [185476448] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:44:40,676 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:44:40,677 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:44:40,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186841230] [2022-11-20 11:44:40,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:44:40,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:44:40,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:44:40,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:44:40,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:44:40,679 INFO L87 Difference]: Start difference. First operand 148376 states and 158097 transitions. Second operand has 3 states, 3 states have (on average 143.33333333333334) internal successors, (430), 3 states have internal predecessors, (430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:44:46,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:44:46,665 INFO L93 Difference]: Finished difference Result 327472 states and 351177 transitions. [2022-11-20 11:44:46,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:44:46,665 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 143.33333333333334) internal successors, (430), 3 states have internal predecessors, (430), 0 states have call successors, (0), 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 607 [2022-11-20 11:44:46,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:44:46,911 INFO L225 Difference]: With dead ends: 327472 [2022-11-20 11:44:46,911 INFO L226 Difference]: Without dead ends: 194844 [2022-11-20 11:44:46,974 INFO L412 NwaCegarLoop]: 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 [2022-11-20 11:44:46,975 INFO L413 NwaCegarLoop]: 530 mSDtfsCounter, 1024 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 2403 mSolverCounterSat, 858 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1024 SdHoareTripleChecker+Valid, 611 SdHoareTripleChecker+Invalid, 3261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 858 IncrementalHoareTripleChecker+Valid, 2403 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2022-11-20 11:44:46,975 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1024 Valid, 611 Invalid, 3261 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [858 Valid, 2403 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2022-11-20 11:44:47,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194844 states.