./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem12_label37.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32f0287-6f71-4593-86a2-4d53993b64b7/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32f0287-6f71-4593-86a2-4d53993b64b7/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_f32f0287-6f71-4593-86a2-4d53993b64b7/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32f0287-6f71-4593-86a2-4d53993b64b7/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem12_label37.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32f0287-6f71-4593-86a2-4d53993b64b7/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_f32f0287-6f71-4593-86a2-4d53993b64b7/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 216d354bd2b39cc08159a7e1d05b12b6bb34b7a88f8458e31e862be3f2691415 --- 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 12:35:33,017 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 12:35:33,020 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 12:35:33,064 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 12:35:33,066 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 12:35:33,071 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 12:35:33,074 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 12:35:33,083 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 12:35:33,085 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 12:35:33,092 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 12:35:33,093 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 12:35:33,095 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 12:35:33,095 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 12:35:33,096 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 12:35:33,098 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 12:35:33,099 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 12:35:33,100 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 12:35:33,101 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 12:35:33,103 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 12:35:33,105 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 12:35:33,107 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 12:35:33,110 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 12:35:33,112 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 12:35:33,114 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 12:35:33,128 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 12:35:33,129 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 12:35:33,131 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 12:35:33,133 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 12:35:33,134 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 12:35:33,138 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 12:35:33,138 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 12:35:33,139 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 12:35:33,142 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 12:35:33,143 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 12:35:33,144 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 12:35:33,144 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 12:35:33,145 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 12:35:33,145 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 12:35:33,146 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 12:35:33,147 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 12:35:33,148 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 12:35:33,149 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32f0287-6f71-4593-86a2-4d53993b64b7/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-20 12:35:33,181 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 12:35:33,182 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 12:35:33,182 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 12:35:33,182 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 12:35:33,183 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 12:35:33,184 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 12:35:33,185 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 12:35:33,185 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 12:35:33,185 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 12:35:33,186 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 12:35:33,186 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 12:35:33,186 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 12:35:33,186 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 12:35:33,187 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 12:35:33,187 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 12:35:33,187 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 12:35:33,188 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 12:35:33,188 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 12:35:33,188 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 12:35:33,188 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 12:35:33,189 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 12:35:33,189 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 12:35:33,189 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 12:35:33,189 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 12:35:33,190 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:35:33,190 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 12:35:33,190 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 12:35:33,191 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 12:35:33,191 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 12:35:33,191 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 12:35:33,191 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 12:35:33,192 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 12:35:33,192 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 12:35:33,192 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_f32f0287-6f71-4593-86a2-4d53993b64b7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32f0287-6f71-4593-86a2-4d53993b64b7/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 216d354bd2b39cc08159a7e1d05b12b6bb34b7a88f8458e31e862be3f2691415 [2022-11-20 12:35:33,578 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 12:35:33,624 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 12:35:33,627 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 12:35:33,629 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 12:35:33,630 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 12:35:33,631 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32f0287-6f71-4593-86a2-4d53993b64b7/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/eca-rers2012/Problem12_label37.c [2022-11-20 12:35:37,087 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 12:35:37,741 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 12:35:37,743 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32f0287-6f71-4593-86a2-4d53993b64b7/sv-benchmarks/c/eca-rers2012/Problem12_label37.c [2022-11-20 12:35:37,776 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32f0287-6f71-4593-86a2-4d53993b64b7/bin/uautomizer-ug76WZFUDN/data/48461e0bd/eb8c4e769e704c52b2fabdd0875c09bc/FLAG1ef64889e [2022-11-20 12:35:37,801 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32f0287-6f71-4593-86a2-4d53993b64b7/bin/uautomizer-ug76WZFUDN/data/48461e0bd/eb8c4e769e704c52b2fabdd0875c09bc [2022-11-20 12:35:37,804 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 12:35:37,807 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 12:35:37,812 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 12:35:37,813 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 12:35:37,817 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 12:35:37,820 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:35:37" (1/1) ... [2022-11-20 12:35:37,822 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22de7e52 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:35:37, skipping insertion in model container [2022-11-20 12:35:37,822 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:35:37" (1/1) ... [2022-11-20 12:35:37,832 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 12:35:38,013 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 12:35:38,412 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_f32f0287-6f71-4593-86a2-4d53993b64b7/sv-benchmarks/c/eca-rers2012/Problem12_label37.c[2005,2018] [2022-11-20 12:35:39,687 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:35:39,702 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 12:35:39,738 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_f32f0287-6f71-4593-86a2-4d53993b64b7/sv-benchmarks/c/eca-rers2012/Problem12_label37.c[2005,2018] [2022-11-20 12:35:40,566 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:35:40,598 INFO L208 MainTranslator]: Completed translation [2022-11-20 12:35:40,599 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:35:40 WrapperNode [2022-11-20 12:35:40,599 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 12:35:40,602 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 12:35:40,602 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 12:35:40,603 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 12:35:40,612 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:35:40" (1/1) ... [2022-11-20 12:35:40,708 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:35:40" (1/1) ... [2022-11-20 12:35:41,092 INFO L138 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 4757 [2022-11-20 12:35:41,093 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 12:35:41,094 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 12:35:41,094 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 12:35:41,094 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 12:35:41,107 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:35:40" (1/1) ... [2022-11-20 12:35:41,108 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:35:40" (1/1) ... [2022-11-20 12:35:41,155 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:35:40" (1/1) ... [2022-11-20 12:35:41,156 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:35:40" (1/1) ... [2022-11-20 12:35:41,530 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:35:40" (1/1) ... [2022-11-20 12:35:41,573 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:35:40" (1/1) ... [2022-11-20 12:35:41,629 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:35:40" (1/1) ... [2022-11-20 12:35:41,646 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:35:40" (1/1) ... [2022-11-20 12:35:41,737 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 12:35:41,739 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 12:35:41,740 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 12:35:41,740 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 12:35:41,741 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:35:40" (1/1) ... [2022-11-20 12:35:41,749 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:35:41,765 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32f0287-6f71-4593-86a2-4d53993b64b7/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:35:41,789 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32f0287-6f71-4593-86a2-4d53993b64b7/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 12:35:41,816 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32f0287-6f71-4593-86a2-4d53993b64b7/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 12:35:41,847 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 12:35:41,847 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 12:35:41,847 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 12:35:41,847 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 12:35:41,941 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 12:35:41,944 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 12:35:48,373 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 12:35:48,391 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 12:35:48,391 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-20 12:35:48,395 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:35:48 BoogieIcfgContainer [2022-11-20 12:35:48,395 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 12:35:48,399 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 12:35:48,399 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 12:35:48,403 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 12:35:48,403 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 12:35:37" (1/3) ... [2022-11-20 12:35:48,404 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@345b65fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:35:48, skipping insertion in model container [2022-11-20 12:35:48,404 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:35:40" (2/3) ... [2022-11-20 12:35:48,405 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@345b65fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:35:48, skipping insertion in model container [2022-11-20 12:35:48,405 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:35:48" (3/3) ... [2022-11-20 12:35:48,407 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label37.c [2022-11-20 12:35:48,430 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 12:35:48,431 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 12:35:48,515 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 12:35:48,523 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;@43289cee, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 12:35:48,524 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-20 12:35:48,533 INFO L276 IsEmpty]: Start isEmpty. Operand has 818 states, 816 states have (on average 1.9178921568627452) internal successors, (1565), 817 states have internal predecessors, (1565), 0 states have call successors, (0), 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 12:35:48,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-20 12:35:48,541 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:35:48,542 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:35:48,542 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:35:48,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:35:48,549 INFO L85 PathProgramCache]: Analyzing trace with hash -461255479, now seen corresponding path program 1 times [2022-11-20 12:35:48,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:35:48,562 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001781241] [2022-11-20 12:35:48,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:35:48,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:35:48,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:35:48,841 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 12:35:48,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:35:48,842 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001781241] [2022-11-20 12:35:48,844 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2001781241] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:35:48,844 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:35:48,845 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 12:35:48,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671048553] [2022-11-20 12:35:48,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:35:48,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:35:48,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:35:48,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:35:48,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:35:48,919 INFO L87 Difference]: Start difference. First operand has 818 states, 816 states have (on average 1.9178921568627452) internal successors, (1565), 817 states have internal predecessors, (1565), 0 states have call successors, (0), 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 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 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 12:35:55,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:35:55,804 INFO L93 Difference]: Finished difference Result 2388 states and 4629 transitions. [2022-11-20 12:35:55,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:35:55,810 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 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 13 [2022-11-20 12:35:55,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:35:55,839 INFO L225 Difference]: With dead ends: 2388 [2022-11-20 12:35:55,840 INFO L226 Difference]: Without dead ends: 1506 [2022-11-20 12:35:55,848 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 12:35:55,851 INFO L413 NwaCegarLoop]: 92 mSDtfsCounter, 846 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 2337 mSolverCounterSat, 1058 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 846 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 3395 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1058 IncrementalHoareTripleChecker+Valid, 2337 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2022-11-20 12:35:55,853 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [846 Valid, 102 Invalid, 3395 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1058 Valid, 2337 Invalid, 0 Unknown, 0 Unchecked, 6.6s Time] [2022-11-20 12:35:55,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1506 states. [2022-11-20 12:35:55,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1506 to 1506. [2022-11-20 12:35:55,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1506 states, 1505 states have (on average 1.869767441860465) internal successors, (2814), 1505 states have internal predecessors, (2814), 0 states have call successors, (0), 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 12:35:55,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1506 states to 1506 states and 2814 transitions. [2022-11-20 12:35:55,987 INFO L78 Accepts]: Start accepts. Automaton has 1506 states and 2814 transitions. Word has length 13 [2022-11-20 12:35:55,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:35:55,992 INFO L495 AbstractCegarLoop]: Abstraction has 1506 states and 2814 transitions. [2022-11-20 12:35:55,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 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 12:35:55,993 INFO L276 IsEmpty]: Start isEmpty. Operand 1506 states and 2814 transitions. [2022-11-20 12:35:55,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-11-20 12:35:55,997 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:35:55,998 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-20 12:35:55,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 12:35:55,999 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:35:56,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:35:56,001 INFO L85 PathProgramCache]: Analyzing trace with hash -1317915872, now seen corresponding path program 1 times [2022-11-20 12:35:56,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:35:56,001 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948934709] [2022-11-20 12:35:56,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:35:56,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:35:56,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:35:56,488 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:35:56,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:35:56,489 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948934709] [2022-11-20 12:35:56,490 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [948934709] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:35:56,490 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:35:56,491 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 12:35:56,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299802425] [2022-11-20 12:35:56,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:35:56,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:35:56,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:35:56,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:35:56,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:35:56,496 INFO L87 Difference]: Start difference. First operand 1506 states and 2814 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 12:36:02,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:36:02,141 INFO L93 Difference]: Finished difference Result 4514 states and 8438 transitions. [2022-11-20 12:36:02,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:36:02,142 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 12:36:02,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:36:02,157 INFO L225 Difference]: With dead ends: 4514 [2022-11-20 12:36:02,158 INFO L226 Difference]: Without dead ends: 3010 [2022-11-20 12:36:02,169 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 12:36:02,228 INFO L413 NwaCegarLoop]: 347 mSDtfsCounter, 918 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2309 mSolverCounterSat, 550 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 918 SdHoareTripleChecker+Valid, 354 SdHoareTripleChecker+Invalid, 2859 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 550 IncrementalHoareTripleChecker+Valid, 2309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2022-11-20 12:36:02,228 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [918 Valid, 354 Invalid, 2859 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [550 Valid, 2309 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2022-11-20 12:36:02,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3010 states. [2022-11-20 12:36:02,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3010 to 3008. [2022-11-20 12:36:02,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3008 states, 3007 states have (on average 1.6531426671100764) internal successors, (4971), 3007 states have internal predecessors, (4971), 0 states have call successors, (0), 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 12:36:02,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3008 states to 3008 states and 4971 transitions. [2022-11-20 12:36:02,332 INFO L78 Accepts]: Start accepts. Automaton has 3008 states and 4971 transitions. Word has length 86 [2022-11-20 12:36:02,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:36:02,335 INFO L495 AbstractCegarLoop]: Abstraction has 3008 states and 4971 transitions. [2022-11-20 12:36:02,335 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 12:36:02,336 INFO L276 IsEmpty]: Start isEmpty. Operand 3008 states and 4971 transitions. [2022-11-20 12:36:02,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-11-20 12:36:02,352 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:36:02,352 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-20 12:36:02,354 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 12:36:02,355 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:36:02,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:36:02,356 INFO L85 PathProgramCache]: Analyzing trace with hash 2032696291, now seen corresponding path program 1 times [2022-11-20 12:36:02,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:36:02,357 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332175328] [2022-11-20 12:36:02,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:36:02,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:36:02,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:02,790 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:36:02,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:36:02,791 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [332175328] [2022-11-20 12:36:02,791 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [332175328] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:36:02,792 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:36:02,792 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:36:02,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025221896] [2022-11-20 12:36:02,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:36:02,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:36:02,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:36:02,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:36:02,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:36:02,796 INFO L87 Difference]: Start difference. First operand 3008 states and 4971 transitions. Second operand has 4 states, 4 states have (on average 24.75) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 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 12:36:11,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:36:11,370 INFO L93 Difference]: Finished difference Result 8267 states and 13429 transitions. [2022-11-20 12:36:11,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 12:36:11,371 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 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 99 [2022-11-20 12:36:11,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:36:11,394 INFO L225 Difference]: With dead ends: 8267 [2022-11-20 12:36:11,395 INFO L226 Difference]: Without dead ends: 5261 [2022-11-20 12:36:11,406 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:36:11,414 INFO L413 NwaCegarLoop]: 337 mSDtfsCounter, 2154 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 4998 mSolverCounterSat, 851 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2154 SdHoareTripleChecker+Valid, 353 SdHoareTripleChecker+Invalid, 5849 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 851 IncrementalHoareTripleChecker+Valid, 4998 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.3s IncrementalHoareTripleChecker+Time [2022-11-20 12:36:11,416 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2154 Valid, 353 Invalid, 5849 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [851 Valid, 4998 Invalid, 0 Unknown, 0 Unchecked, 8.3s Time] [2022-11-20 12:36:11,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5261 states. [2022-11-20 12:36:11,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5261 to 5261. [2022-11-20 12:36:11,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5261 states, 5260 states have (on average 1.5102661596958176) internal successors, (7944), 5260 states have internal predecessors, (7944), 0 states have call successors, (0), 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 12:36:11,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5261 states to 5261 states and 7944 transitions. [2022-11-20 12:36:11,552 INFO L78 Accepts]: Start accepts. Automaton has 5261 states and 7944 transitions. Word has length 99 [2022-11-20 12:36:11,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:36:11,553 INFO L495 AbstractCegarLoop]: Abstraction has 5261 states and 7944 transitions. [2022-11-20 12:36:11,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 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 12:36:11,553 INFO L276 IsEmpty]: Start isEmpty. Operand 5261 states and 7944 transitions. [2022-11-20 12:36:11,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-11-20 12:36:11,556 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:36:11,557 INFO L195 NwaCegarLoop]: trace histogram [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, 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 12:36:11,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 12:36:11,557 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:36:11,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:36:11,559 INFO L85 PathProgramCache]: Analyzing trace with hash 1005399562, now seen corresponding path program 1 times [2022-11-20 12:36:11,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:36:11,560 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782545738] [2022-11-20 12:36:11,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:36:11,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:36:11,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:12,216 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:36:12,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:36:12,217 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782545738] [2022-11-20 12:36:12,217 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1782545738] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:36:12,218 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [16104378] [2022-11-20 12:36:12,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:36:12,218 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:36:12,219 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32f0287-6f71-4593-86a2-4d53993b64b7/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:36:12,227 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32f0287-6f71-4593-86a2-4d53993b64b7/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:36:12,261 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32f0287-6f71-4593-86a2-4d53993b64b7/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 12:36:12,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:12,405 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 12:36:12,419 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:36:12,865 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-20 12:36:12,866 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:36:12,866 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [16104378] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:36:12,866 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 12:36:12,867 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2022-11-20 12:36:12,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079955111] [2022-11-20 12:36:12,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:36:12,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:36:12,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:36:12,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:36:12,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:36:12,876 INFO L87 Difference]: Start difference. First operand 5261 states and 7944 transitions. Second operand has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 2 states have internal predecessors, (145), 0 states have call successors, (0), 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 12:36:18,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:36:18,259 INFO L93 Difference]: Finished difference Result 14275 states and 22313 transitions. [2022-11-20 12:36:18,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:36:18,260 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 2 states have internal predecessors, (145), 0 states have call successors, (0), 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 154 [2022-11-20 12:36:18,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:36:18,298 INFO L225 Difference]: With dead ends: 14275 [2022-11-20 12:36:18,298 INFO L226 Difference]: Without dead ends: 9767 [2022-11-20 12:36:18,306 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:36:18,308 INFO L413 NwaCegarLoop]: 659 mSDtfsCounter, 621 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2456 mSolverCounterSat, 585 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 621 SdHoareTripleChecker+Valid, 666 SdHoareTripleChecker+Invalid, 3041 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 585 IncrementalHoareTripleChecker+Valid, 2456 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2022-11-20 12:36:18,308 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [621 Valid, 666 Invalid, 3041 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [585 Valid, 2456 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2022-11-20 12:36:18,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9767 states. [2022-11-20 12:36:18,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9767 to 9767. [2022-11-20 12:36:18,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9767 states, 9766 states have (on average 1.3878763055498669) internal successors, (13554), 9766 states have internal predecessors, (13554), 0 states have call successors, (0), 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 12:36:18,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9767 states to 9767 states and 13554 transitions. [2022-11-20 12:36:18,617 INFO L78 Accepts]: Start accepts. Automaton has 9767 states and 13554 transitions. Word has length 154 [2022-11-20 12:36:18,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:36:18,618 INFO L495 AbstractCegarLoop]: Abstraction has 9767 states and 13554 transitions. [2022-11-20 12:36:18,619 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 2 states have internal predecessors, (145), 0 states have call successors, (0), 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 12:36:18,619 INFO L276 IsEmpty]: Start isEmpty. Operand 9767 states and 13554 transitions. [2022-11-20 12:36:18,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2022-11-20 12:36:18,622 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:36:18,622 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:36:18,635 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32f0287-6f71-4593-86a2-4d53993b64b7/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-20 12:36:18,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32f0287-6f71-4593-86a2-4d53993b64b7/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:36:18,828 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:36:18,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:36:18,829 INFO L85 PathProgramCache]: Analyzing trace with hash 1859295125, now seen corresponding path program 1 times [2022-11-20 12:36:18,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:36:18,829 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886239942] [2022-11-20 12:36:18,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:36:18,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:36:18,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:19,286 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 91 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:36:19,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:36:19,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886239942] [2022-11-20 12:36:19,287 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1886239942] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:36:19,287 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:36:19,288 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:36:19,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078772394] [2022-11-20 12:36:19,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:36:19,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:36:19,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:36:19,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:36:19,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:36:19,291 INFO L87 Difference]: Start difference. First operand 9767 states and 13554 transitions. Second operand has 4 states, 4 states have (on average 42.5) internal successors, (170), 3 states have internal predecessors, (170), 0 states have call successors, (0), 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 12:36:25,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:36:25,140 INFO L93 Difference]: Finished difference Result 23326 states and 32178 transitions. [2022-11-20 12:36:25,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 12:36:25,141 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 42.5) internal successors, (170), 3 states have internal predecessors, (170), 0 states have call successors, (0), 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 170 [2022-11-20 12:36:25,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:36:25,191 INFO L225 Difference]: With dead ends: 23326 [2022-11-20 12:36:25,192 INFO L226 Difference]: Without dead ends: 14275 [2022-11-20 12:36:25,200 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 12:36:25,201 INFO L413 NwaCegarLoop]: 695 mSDtfsCounter, 706 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 3109 mSolverCounterSat, 392 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 706 SdHoareTripleChecker+Valid, 710 SdHoareTripleChecker+Invalid, 3501 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 392 IncrementalHoareTripleChecker+Valid, 3109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2022-11-20 12:36:25,202 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [706 Valid, 710 Invalid, 3501 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [392 Valid, 3109 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2022-11-20 12:36:25,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14275 states. [2022-11-20 12:36:25,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14275 to 14273. [2022-11-20 12:36:25,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14273 states, 14272 states have (on average 1.2780269058295963) internal successors, (18240), 14272 states have internal predecessors, (18240), 0 states have call successors, (0), 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 12:36:25,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14273 states to 14273 states and 18240 transitions. [2022-11-20 12:36:25,495 INFO L78 Accepts]: Start accepts. Automaton has 14273 states and 18240 transitions. Word has length 170 [2022-11-20 12:36:25,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:36:25,495 INFO L495 AbstractCegarLoop]: Abstraction has 14273 states and 18240 transitions. [2022-11-20 12:36:25,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 42.5) internal successors, (170), 3 states have internal predecessors, (170), 0 states have call successors, (0), 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 12:36:25,496 INFO L276 IsEmpty]: Start isEmpty. Operand 14273 states and 18240 transitions. [2022-11-20 12:36:25,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2022-11-20 12:36:25,501 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:36:25,501 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:36:25,501 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 12:36:25,502 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:36:25,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:36:25,503 INFO L85 PathProgramCache]: Analyzing trace with hash 1739309358, now seen corresponding path program 1 times [2022-11-20 12:36:25,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:36:25,503 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350584261] [2022-11-20 12:36:25,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:36:25,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:36:25,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:26,429 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 41 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:36:26,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:36:26,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350584261] [2022-11-20 12:36:26,430 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1350584261] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:36:26,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [285934496] [2022-11-20 12:36:26,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:36:26,431 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:36:26,431 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32f0287-6f71-4593-86a2-4d53993b64b7/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:36:26,435 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32f0287-6f71-4593-86a2-4d53993b64b7/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:36:26,467 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32f0287-6f71-4593-86a2-4d53993b64b7/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 12:36:26,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:26,611 INFO L263 TraceCheckSpWp]: Trace formula consists of 357 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 12:36:26,630 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:36:26,680 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2022-11-20 12:36:26,680 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:36:26,681 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [285934496] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:36:26,681 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 12:36:26,681 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2022-11-20 12:36:26,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989990755] [2022-11-20 12:36:26,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:36:26,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:36:26,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:36:26,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:36:26,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-20 12:36:26,692 INFO L87 Difference]: Start difference. First operand 14273 states and 18240 transitions. Second operand has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 0 states have call successors, (0), 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 12:36:31,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:36:31,948 INFO L93 Difference]: Finished difference Result 36805 states and 48363 transitions. [2022-11-20 12:36:31,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:36:31,949 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 0 states have call successors, (0), 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 244 [2022-11-20 12:36:31,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:36:32,004 INFO L225 Difference]: With dead ends: 36805 [2022-11-20 12:36:32,005 INFO L226 Difference]: Without dead ends: 23285 [2022-11-20 12:36:32,020 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 243 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-20 12:36:32,021 INFO L413 NwaCegarLoop]: 860 mSDtfsCounter, 818 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2265 mSolverCounterSat, 792 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 818 SdHoareTripleChecker+Valid, 868 SdHoareTripleChecker+Invalid, 3057 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 792 IncrementalHoareTripleChecker+Valid, 2265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2022-11-20 12:36:32,022 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [818 Valid, 868 Invalid, 3057 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [792 Valid, 2265 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2022-11-20 12:36:32,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23285 states. [2022-11-20 12:36:32,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23285 to 23285. [2022-11-20 12:36:32,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23285 states, 23284 states have (on average 1.3053169558495104) internal successors, (30393), 23284 states have internal predecessors, (30393), 0 states have call successors, (0), 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 12:36:32,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23285 states to 23285 states and 30393 transitions. [2022-11-20 12:36:32,456 INFO L78 Accepts]: Start accepts. Automaton has 23285 states and 30393 transitions. Word has length 244 [2022-11-20 12:36:32,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:36:32,457 INFO L495 AbstractCegarLoop]: Abstraction has 23285 states and 30393 transitions. [2022-11-20 12:36:32,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 0 states have call successors, (0), 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 12:36:32,459 INFO L276 IsEmpty]: Start isEmpty. Operand 23285 states and 30393 transitions. [2022-11-20 12:36:32,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2022-11-20 12:36:32,464 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:36:32,464 INFO L195 NwaCegarLoop]: trace histogram [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, 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 12:36:32,485 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32f0287-6f71-4593-86a2-4d53993b64b7/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-20 12:36:32,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32f0287-6f71-4593-86a2-4d53993b64b7/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:36:32,676 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:36:32,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:36:32,676 INFO L85 PathProgramCache]: Analyzing trace with hash -518830816, now seen corresponding path program 1 times [2022-11-20 12:36:32,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:36:32,676 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423071812] [2022-11-20 12:36:32,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:36:32,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:36:32,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:33,112 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2022-11-20 12:36:33,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:36:33,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423071812] [2022-11-20 12:36:33,113 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1423071812] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:36:33,114 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:36:33,114 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:36:33,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907274859] [2022-11-20 12:36:33,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:36:33,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:36:33,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:36:33,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:36:33,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:36:33,117 INFO L87 Difference]: Start difference. First operand 23285 states and 30393 transitions. Second operand has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 0 states have call successors, (0), 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 12:36:38,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:36:38,162 INFO L93 Difference]: Finished difference Result 57082 states and 76329 transitions. [2022-11-20 12:36:38,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:36:38,163 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 0 states have call successors, (0), 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 253 [2022-11-20 12:36:38,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:36:38,246 INFO L225 Difference]: With dead ends: 57082 [2022-11-20 12:36:38,247 INFO L226 Difference]: Without dead ends: 34550 [2022-11-20 12:36:38,270 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 12:36:38,271 INFO L413 NwaCegarLoop]: 242 mSDtfsCounter, 853 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2235 mSolverCounterSat, 653 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 853 SdHoareTripleChecker+Valid, 249 SdHoareTripleChecker+Invalid, 2888 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 653 IncrementalHoareTripleChecker+Valid, 2235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2022-11-20 12:36:38,272 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [853 Valid, 249 Invalid, 2888 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [653 Valid, 2235 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2022-11-20 12:36:38,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34550 states. [2022-11-20 12:36:38,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34550 to 34550. [2022-11-20 12:36:39,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34550 states, 34549 states have (on average 1.3112969984659468) internal successors, (45304), 34549 states have internal predecessors, (45304), 0 states have call successors, (0), 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 12:36:39,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34550 states to 34550 states and 45304 transitions. [2022-11-20 12:36:39,068 INFO L78 Accepts]: Start accepts. Automaton has 34550 states and 45304 transitions. Word has length 253 [2022-11-20 12:36:39,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:36:39,069 INFO L495 AbstractCegarLoop]: Abstraction has 34550 states and 45304 transitions. [2022-11-20 12:36:39,069 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 0 states have call successors, (0), 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 12:36:39,070 INFO L276 IsEmpty]: Start isEmpty. Operand 34550 states and 45304 transitions. [2022-11-20 12:36:39,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2022-11-20 12:36:39,075 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:36:39,076 INFO L195 NwaCegarLoop]: trace histogram [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, 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] [2022-11-20 12:36:39,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-20 12:36:39,077 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:36:39,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:36:39,077 INFO L85 PathProgramCache]: Analyzing trace with hash -879499859, now seen corresponding path program 1 times [2022-11-20 12:36:39,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:36:39,078 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448490375] [2022-11-20 12:36:39,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:36:39,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:36:39,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:39,652 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 137 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:36:39,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:36:39,653 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448490375] [2022-11-20 12:36:39,653 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1448490375] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:36:39,653 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:36:39,654 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:36:39,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712724835] [2022-11-20 12:36:39,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:36:39,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:36:39,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:36:39,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:36:39,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:36:39,656 INFO L87 Difference]: Start difference. First operand 34550 states and 45304 transitions. Second operand has 3 states, 3 states have (on average 90.33333333333333) internal successors, (271), 3 states have internal predecessors, (271), 0 states have call successors, (0), 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 12:36:45,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:36:45,454 INFO L93 Difference]: Finished difference Result 68347 states and 89850 transitions. [2022-11-20 12:36:45,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:36:45,455 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 90.33333333333333) internal successors, (271), 3 states have internal predecessors, (271), 0 states have call successors, (0), 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 271 [2022-11-20 12:36:45,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:36:45,518 INFO L225 Difference]: With dead ends: 68347 [2022-11-20 12:36:45,519 INFO L226 Difference]: Without dead ends: 34550 [2022-11-20 12:36:45,541 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 12:36:45,542 INFO L413 NwaCegarLoop]: 1267 mSDtfsCounter, 651 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2656 mSolverCounterSat, 306 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 651 SdHoareTripleChecker+Valid, 1274 SdHoareTripleChecker+Invalid, 2962 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 306 IncrementalHoareTripleChecker+Valid, 2656 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2022-11-20 12:36:45,542 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [651 Valid, 1274 Invalid, 2962 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [306 Valid, 2656 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2022-11-20 12:36:45,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34550 states. [2022-11-20 12:36:46,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34550 to 34550. [2022-11-20 12:36:46,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34550 states, 34549 states have (on average 1.2889519233552347) internal successors, (44532), 34549 states have internal predecessors, (44532), 0 states have call successors, (0), 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 12:36:46,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34550 states to 34550 states and 44532 transitions. [2022-11-20 12:36:46,333 INFO L78 Accepts]: Start accepts. Automaton has 34550 states and 44532 transitions. Word has length 271 [2022-11-20 12:36:46,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:36:46,334 INFO L495 AbstractCegarLoop]: Abstraction has 34550 states and 44532 transitions. [2022-11-20 12:36:46,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 90.33333333333333) internal successors, (271), 3 states have internal predecessors, (271), 0 states have call successors, (0), 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 12:36:46,335 INFO L276 IsEmpty]: Start isEmpty. Operand 34550 states and 44532 transitions. [2022-11-20 12:36:46,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2022-11-20 12:36:46,341 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:36:46,341 INFO L195 NwaCegarLoop]: trace histogram [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, 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] [2022-11-20 12:36:46,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-20 12:36:46,342 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:36:46,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:36:46,343 INFO L85 PathProgramCache]: Analyzing trace with hash -1640314461, now seen corresponding path program 1 times [2022-11-20 12:36:46,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:36:46,343 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012940187] [2022-11-20 12:36:46,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:36:46,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:36:46,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:46,828 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2022-11-20 12:36:46,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:36:46,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012940187] [2022-11-20 12:36:46,829 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1012940187] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:36:46,829 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:36:46,829 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:36:46,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458675245] [2022-11-20 12:36:46,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:36:46,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:36:46,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:36:46,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:36:46,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:36:46,832 INFO L87 Difference]: Start difference. First operand 34550 states and 44532 transitions. Second operand has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 0 states have call successors, (0), 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 12:36:52,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:36:52,473 INFO L93 Difference]: Finished difference Result 95383 states and 123558 transitions. [2022-11-20 12:36:52,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:36:52,473 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 0 states have call successors, (0), 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 275 [2022-11-20 12:36:52,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:36:52,555 INFO L225 Difference]: With dead ends: 95383 [2022-11-20 12:36:52,555 INFO L226 Difference]: Without dead ends: 61586 [2022-11-20 12:36:52,585 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 12:36:52,586 INFO L413 NwaCegarLoop]: 1397 mSDtfsCounter, 741 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2348 mSolverCounterSat, 539 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 741 SdHoareTripleChecker+Valid, 1405 SdHoareTripleChecker+Invalid, 2887 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 539 IncrementalHoareTripleChecker+Valid, 2348 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2022-11-20 12:36:52,586 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [741 Valid, 1405 Invalid, 2887 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [539 Valid, 2348 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2022-11-20 12:36:52,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61586 states. [2022-11-20 12:36:53,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61586 to 60084. [2022-11-20 12:36:53,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60084 states, 60083 states have (on average 1.1968110780087546) internal successors, (71908), 60083 states have internal predecessors, (71908), 0 states have call successors, (0), 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 12:36:53,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60084 states to 60084 states and 71908 transitions. [2022-11-20 12:36:53,722 INFO L78 Accepts]: Start accepts. Automaton has 60084 states and 71908 transitions. Word has length 275 [2022-11-20 12:36:53,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:36:53,722 INFO L495 AbstractCegarLoop]: Abstraction has 60084 states and 71908 transitions. [2022-11-20 12:36:53,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 0 states have call successors, (0), 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 12:36:53,723 INFO L276 IsEmpty]: Start isEmpty. Operand 60084 states and 71908 transitions. [2022-11-20 12:36:53,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 507 [2022-11-20 12:36:53,757 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:36:53,758 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:36:53,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-20 12:36:53,758 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:36:53,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:36:53,759 INFO L85 PathProgramCache]: Analyzing trace with hash -437185341, now seen corresponding path program 1 times [2022-11-20 12:36:53,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:36:53,760 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966441145] [2022-11-20 12:36:53,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:36:53,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:36:54,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:55,633 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 161 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:36:55,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:36:55,634 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966441145] [2022-11-20 12:36:55,634 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1966441145] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:36:55,634 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:36:55,634 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:36:55,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157753778] [2022-11-20 12:36:55,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:36:55,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:36:55,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:36:55,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:36:55,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:36:55,638 INFO L87 Difference]: Start difference. First operand 60084 states and 71908 transitions. Second operand has 4 states, 4 states have (on average 126.5) internal successors, (506), 3 states have internal predecessors, (506), 0 states have call successors, (0), 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 12:37:03,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:37:03,765 INFO L93 Difference]: Finished difference Result 144949 states and 177319 transitions. [2022-11-20 12:37:03,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 12:37:03,766 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 126.5) internal successors, (506), 3 states have internal predecessors, (506), 0 states have call successors, (0), 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 506 [2022-11-20 12:37:03,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:37:03,868 INFO L225 Difference]: With dead ends: 144949 [2022-11-20 12:37:03,868 INFO L226 Difference]: Without dead ends: 85618 [2022-11-20 12:37:03,894 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 12:37:03,895 INFO L413 NwaCegarLoop]: 427 mSDtfsCounter, 1081 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 4302 mSolverCounterSat, 944 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1081 SdHoareTripleChecker+Valid, 440 SdHoareTripleChecker+Invalid, 5246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 944 IncrementalHoareTripleChecker+Valid, 4302 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time [2022-11-20 12:37:03,895 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1081 Valid, 440 Invalid, 5246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [944 Valid, 4302 Invalid, 0 Unknown, 0 Unchecked, 7.2s Time] [2022-11-20 12:37:03,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85618 states. [2022-11-20 12:37:04,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85618 to 78859. [2022-11-20 12:37:04,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78859 states, 78858 states have (on average 1.1790306627101879) internal successors, (92976), 78858 states have internal predecessors, (92976), 0 states have call successors, (0), 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 12:37:05,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78859 states to 78859 states and 92976 transitions. [2022-11-20 12:37:05,080 INFO L78 Accepts]: Start accepts. Automaton has 78859 states and 92976 transitions. Word has length 506 [2022-11-20 12:37:05,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:37:05,081 INFO L495 AbstractCegarLoop]: Abstraction has 78859 states and 92976 transitions. [2022-11-20 12:37:05,081 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 126.5) internal successors, (506), 3 states have internal predecessors, (506), 0 states have call successors, (0), 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 12:37:05,081 INFO L276 IsEmpty]: Start isEmpty. Operand 78859 states and 92976 transitions. [2022-11-20 12:37:05,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 586 [2022-11-20 12:37:05,130 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:37:05,130 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:37:05,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-20 12:37:05,131 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:37:05,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:37:05,132 INFO L85 PathProgramCache]: Analyzing trace with hash -1368749593, now seen corresponding path program 1 times [2022-11-20 12:37:05,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:37:05,132 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11372139] [2022-11-20 12:37:05,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:37:05,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:37:05,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:37:07,907 INFO L134 CoverageAnalysis]: Checked inductivity of 329 backedges. 197 proven. 108 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-20 12:37:07,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:37:07,908 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11372139] [2022-11-20 12:37:07,908 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [11372139] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:37:07,909 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [558741260] [2022-11-20 12:37:07,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:37:07,910 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:37:07,911 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32f0287-6f71-4593-86a2-4d53993b64b7/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:37:07,916 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32f0287-6f71-4593-86a2-4d53993b64b7/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:37:07,951 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32f0287-6f71-4593-86a2-4d53993b64b7/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 12:37:08,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:37:08,249 INFO L263 TraceCheckSpWp]: Trace formula consists of 727 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 12:37:08,260 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:37:10,476 INFO L134 CoverageAnalysis]: Checked inductivity of 329 backedges. 251 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2022-11-20 12:37:10,477 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:37:10,477 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [558741260] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:37:10,477 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 12:37:10,478 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2022-11-20 12:37:10,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889247591] [2022-11-20 12:37:10,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:37:10,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:37:10,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:37:10,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:37:10,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-20 12:37:10,481 INFO L87 Difference]: Start difference. First operand 78859 states and 92976 transitions. Second operand has 4 states, 4 states have (on average 127.0) internal successors, (508), 3 states have internal predecessors, (508), 0 states have call successors, (0), 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 12:37:16,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:37:16,871 INFO L93 Difference]: Finished difference Result 168230 states and 198059 transitions. [2022-11-20 12:37:16,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 12:37:16,872 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 127.0) internal successors, (508), 3 states have internal predecessors, (508), 0 states have call successors, (0), 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 585 [2022-11-20 12:37:16,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:37:16,970 INFO L225 Difference]: With dead ends: 168230 [2022-11-20 12:37:16,970 INFO L226 Difference]: Without dead ends: 90124 [2022-11-20 12:37:17,009 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 588 GetRequests, 583 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-20 12:37:17,010 INFO L413 NwaCegarLoop]: 565 mSDtfsCounter, 1652 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 3150 mSolverCounterSat, 397 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1652 SdHoareTripleChecker+Valid, 578 SdHoareTripleChecker+Invalid, 3547 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 397 IncrementalHoareTripleChecker+Valid, 3150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2022-11-20 12:37:17,011 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1652 Valid, 578 Invalid, 3547 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [397 Valid, 3150 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2022-11-20 12:37:17,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90124 states. [2022-11-20 12:37:18,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90124 to 87120. [2022-11-20 12:37:18,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87120 states, 87119 states have (on average 1.1699973599329652) internal successors, (101929), 87119 states have internal predecessors, (101929), 0 states have call successors, (0), 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 12:37:18,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87120 states to 87120 states and 101929 transitions. [2022-11-20 12:37:18,526 INFO L78 Accepts]: Start accepts. Automaton has 87120 states and 101929 transitions. Word has length 585 [2022-11-20 12:37:18,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:37:18,527 INFO L495 AbstractCegarLoop]: Abstraction has 87120 states and 101929 transitions. [2022-11-20 12:37:18,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 127.0) internal successors, (508), 3 states have internal predecessors, (508), 0 states have call successors, (0), 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 12:37:18,528 INFO L276 IsEmpty]: Start isEmpty. Operand 87120 states and 101929 transitions. [2022-11-20 12:37:18,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 596 [2022-11-20 12:37:18,577 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:37:18,577 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:37:18,592 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32f0287-6f71-4593-86a2-4d53993b64b7/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-20 12:37:18,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32f0287-6f71-4593-86a2-4d53993b64b7/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-20 12:37:18,786 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:37:18,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:37:18,787 INFO L85 PathProgramCache]: Analyzing trace with hash -2004908532, now seen corresponding path program 1 times [2022-11-20 12:37:18,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:37:18,787 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211463610] [2022-11-20 12:37:18,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:37:18,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:37:18,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:37:21,055 INFO L134 CoverageAnalysis]: Checked inductivity of 345 backedges. 116 proven. 229 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:37:21,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:37:21,055 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211463610] [2022-11-20 12:37:21,055 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [211463610] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:37:21,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1665082495] [2022-11-20 12:37:21,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:37:21,056 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:37:21,057 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32f0287-6f71-4593-86a2-4d53993b64b7/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:37:21,058 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32f0287-6f71-4593-86a2-4d53993b64b7/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:37:21,065 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32f0287-6f71-4593-86a2-4d53993b64b7/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-20 12:37:21,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:37:21,394 INFO L263 TraceCheckSpWp]: Trace formula consists of 736 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 12:37:21,419 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:37:22,960 INFO L134 CoverageAnalysis]: Checked inductivity of 345 backedges. 261 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-11-20 12:37:22,960 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:37:22,961 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1665082495] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:37:22,961 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 12:37:22,961 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2022-11-20 12:37:22,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800856976] [2022-11-20 12:37:22,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:37:22,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:37:22,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:37:22,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:37:22,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:37:22,967 INFO L87 Difference]: Start difference. First operand 87120 states and 101929 transitions. Second operand has 3 states, 3 states have (on average 170.66666666666666) internal successors, (512), 3 states have internal predecessors, (512), 0 states have call successors, (0), 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 12:37:29,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:37:29,023 INFO L93 Difference]: Finished difference Result 205029 states and 240876 transitions. [2022-11-20 12:37:29,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:37:29,024 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 170.66666666666666) internal successors, (512), 3 states have internal predecessors, (512), 0 states have call successors, (0), 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 595 [2022-11-20 12:37:29,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:37:29,212 INFO L225 Difference]: With dead ends: 205029 [2022-11-20 12:37:29,213 INFO L226 Difference]: Without dead ends: 118662 [2022-11-20 12:37:29,245 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 599 GetRequests, 594 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:37:29,248 INFO L413 NwaCegarLoop]: 1298 mSDtfsCounter, 412 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2284 mSolverCounterSat, 493 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 412 SdHoareTripleChecker+Valid, 1306 SdHoareTripleChecker+Invalid, 2777 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 493 IncrementalHoareTripleChecker+Valid, 2284 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2022-11-20 12:37:29,249 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [412 Valid, 1306 Invalid, 2777 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [493 Valid, 2284 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2022-11-20 12:37:29,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118662 states. [2022-11-20 12:37:31,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118662 to 115658. [2022-11-20 12:37:31,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115658 states, 115657 states have (on average 1.1493640678904) internal successors, (132932), 115657 states have internal predecessors, (132932), 0 states have call successors, (0), 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 12:37:31,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115658 states to 115658 states and 132932 transitions. [2022-11-20 12:37:31,320 INFO L78 Accepts]: Start accepts. Automaton has 115658 states and 132932 transitions. Word has length 595 [2022-11-20 12:37:31,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:37:31,320 INFO L495 AbstractCegarLoop]: Abstraction has 115658 states and 132932 transitions. [2022-11-20 12:37:31,320 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 170.66666666666666) internal successors, (512), 3 states have internal predecessors, (512), 0 states have call successors, (0), 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 12:37:31,321 INFO L276 IsEmpty]: Start isEmpty. Operand 115658 states and 132932 transitions. [2022-11-20 12:37:31,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 606 [2022-11-20 12:37:31,341 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:37:31,342 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:37:31,355 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32f0287-6f71-4593-86a2-4d53993b64b7/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-20 12:37:31,550 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32f0287-6f71-4593-86a2-4d53993b64b7/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-20 12:37:31,550 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:37:31,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:37:31,551 INFO L85 PathProgramCache]: Analyzing trace with hash 494068697, now seen corresponding path program 1 times [2022-11-20 12:37:31,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:37:31,551 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760822502] [2022-11-20 12:37:31,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:37:31,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:37:31,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:37:33,344 INFO L134 CoverageAnalysis]: Checked inductivity of 369 backedges. 271 proven. 0 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2022-11-20 12:37:33,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:37:33,345 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760822502] [2022-11-20 12:37:33,345 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1760822502] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:37:33,345 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:37:33,345 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:37:33,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330397035] [2022-11-20 12:37:33,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:37:33,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:37:33,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:37:33,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:37:33,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:37:33,348 INFO L87 Difference]: Start difference. First operand 115658 states and 132932 transitions. Second operand has 3 states, 3 states have (on average 169.33333333333334) internal successors, (508), 3 states have internal predecessors, (508), 0 states have call successors, (0), 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 12:37:39,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:37:39,529 INFO L93 Difference]: Finished difference Result 232816 states and 267391 transitions. [2022-11-20 12:37:39,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:37:39,530 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 169.33333333333334) internal successors, (508), 3 states have internal predecessors, (508), 0 states have call successors, (0), 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 605 [2022-11-20 12:37:39,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:37:39,696 INFO L225 Difference]: With dead ends: 232816 [2022-11-20 12:37:39,696 INFO L226 Difference]: Without dead ends: 115658 [2022-11-20 12:37:39,742 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 12:37:39,743 INFO L413 NwaCegarLoop]: 1291 mSDtfsCounter, 405 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2470 mSolverCounterSat, 263 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 405 SdHoareTripleChecker+Valid, 1298 SdHoareTripleChecker+Invalid, 2733 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 263 IncrementalHoareTripleChecker+Valid, 2470 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2022-11-20 12:37:39,744 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [405 Valid, 1298 Invalid, 2733 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [263 Valid, 2470 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2022-11-20 12:37:39,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115658 states. [2022-11-20 12:37:41,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115658 to 114156. [2022-11-20 12:37:41,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114156 states, 114155 states have (on average 1.1360956594104508) internal successors, (129691), 114155 states have internal predecessors, (129691), 0 states have call successors, (0), 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 12:37:42,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114156 states to 114156 states and 129691 transitions. [2022-11-20 12:37:42,105 INFO L78 Accepts]: Start accepts. Automaton has 114156 states and 129691 transitions. Word has length 605 [2022-11-20 12:37:42,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:37:42,106 INFO L495 AbstractCegarLoop]: Abstraction has 114156 states and 129691 transitions. [2022-11-20 12:37:42,106 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 169.33333333333334) internal successors, (508), 3 states have internal predecessors, (508), 0 states have call successors, (0), 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 12:37:42,106 INFO L276 IsEmpty]: Start isEmpty. Operand 114156 states and 129691 transitions. [2022-11-20 12:37:42,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 606 [2022-11-20 12:37:42,137 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:37:42,138 INFO L195 NwaCegarLoop]: trace histogram [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, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:37:42,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-20 12:37:42,138 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:37:42,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:37:42,139 INFO L85 PathProgramCache]: Analyzing trace with hash 429750882, now seen corresponding path program 1 times [2022-11-20 12:37:42,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:37:42,140 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692077068] [2022-11-20 12:37:42,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:37:42,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:37:42,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:37:42,661 INFO L134 CoverageAnalysis]: Checked inductivity of 636 backedges. 541 proven. 0 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2022-11-20 12:37:42,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:37:42,662 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692077068] [2022-11-20 12:37:42,662 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1692077068] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:37:42,662 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:37:42,663 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:37:42,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026434894] [2022-11-20 12:37:42,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:37:42,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:37:42,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:37:42,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:37:42,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:37:42,666 INFO L87 Difference]: Start difference. First operand 114156 states and 129691 transitions. Second operand has 3 states, 3 states have (on average 170.66666666666666) internal successors, (512), 3 states have internal predecessors, (512), 0 states have call successors, (0), 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 12:37:48,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:37:48,589 INFO L93 Difference]: Finished difference Result 248587 states and 285354 transitions. [2022-11-20 12:37:48,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:37:48,590 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 170.66666666666666) internal successors, (512), 3 states have internal predecessors, (512), 0 states have call successors, (0), 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 605 [2022-11-20 12:37:48,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:37:49,152 INFO L225 Difference]: With dead ends: 248587 [2022-11-20 12:37:49,167 INFO L226 Difference]: Without dead ends: 135184 [2022-11-20 12:37:49,228 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 12:37:49,230 INFO L413 NwaCegarLoop]: 1210 mSDtfsCounter, 675 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2256 mSolverCounterSat, 503 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 675 SdHoareTripleChecker+Valid, 1218 SdHoareTripleChecker+Invalid, 2759 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 503 IncrementalHoareTripleChecker+Valid, 2256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2022-11-20 12:37:49,231 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [675 Valid, 1218 Invalid, 2759 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [503 Valid, 2256 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2022-11-20 12:37:49,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135184 states. [2022-11-20 12:37:51,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135184 to 132180. [2022-11-20 12:37:51,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132180 states, 132179 states have (on average 1.1204881259504158) internal successors, (148105), 132179 states have internal predecessors, (148105), 0 states have call successors, (0), 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 12:37:51,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132180 states to 132180 states and 148105 transitions. [2022-11-20 12:37:51,382 INFO L78 Accepts]: Start accepts. Automaton has 132180 states and 148105 transitions. Word has length 605 [2022-11-20 12:37:51,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:37:51,383 INFO L495 AbstractCegarLoop]: Abstraction has 132180 states and 148105 transitions. [2022-11-20 12:37:51,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 170.66666666666666) internal successors, (512), 3 states have internal predecessors, (512), 0 states have call successors, (0), 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 12:37:51,383 INFO L276 IsEmpty]: Start isEmpty. Operand 132180 states and 148105 transitions. [2022-11-20 12:37:51,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 655 [2022-11-20 12:37:51,405 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:37:51,405 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:37:51,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-20 12:37:51,406 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:37:51,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:37:51,406 INFO L85 PathProgramCache]: Analyzing trace with hash -1748289736, now seen corresponding path program 1 times [2022-11-20 12:37:51,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:37:51,406 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397095594] [2022-11-20 12:37:51,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:37:51,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:37:51,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:37:53,949 INFO L134 CoverageAnalysis]: Checked inductivity of 463 backedges. 398 proven. 54 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-20 12:37:53,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:37:53,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397095594] [2022-11-20 12:37:53,950 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [397095594] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:37:53,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1053997138] [2022-11-20 12:37:53,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:37:53,951 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:37:53,951 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32f0287-6f71-4593-86a2-4d53993b64b7/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:37:53,952 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32f0287-6f71-4593-86a2-4d53993b64b7/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:37:53,961 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32f0287-6f71-4593-86a2-4d53993b64b7/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-20 12:37:54,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:37:54,284 INFO L263 TraceCheckSpWp]: Trace formula consists of 792 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 12:37:54,293 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:37:55,232 INFO L134 CoverageAnalysis]: Checked inductivity of 463 backedges. 452 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-20 12:37:55,233 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:37:55,233 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1053997138] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:37:55,233 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 12:37:55,234 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2022-11-20 12:37:55,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555161595] [2022-11-20 12:37:55,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:37:55,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:37:55,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:37:55,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:37:55,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-20 12:37:55,237 INFO L87 Difference]: Start difference. First operand 132180 states and 148105 transitions. Second operand has 4 states, 4 states have (on average 161.0) internal successors, (644), 3 states have internal predecessors, (644), 0 states have call successors, (0), 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 12:38:03,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:38:03,164 INFO L93 Difference]: Finished difference Result 270366 states and 302375 transitions. [2022-11-20 12:38:03,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 12:38:03,165 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 161.0) internal successors, (644), 3 states have internal predecessors, (644), 0 states have call successors, (0), 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 654 [2022-11-20 12:38:03,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:38:03,364 INFO L225 Difference]: With dead ends: 270366 [2022-11-20 12:38:03,364 INFO L226 Difference]: Without dead ends: 138939 [2022-11-20 12:38:03,434 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 657 GetRequests, 652 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-20 12:38:03,435 INFO L413 NwaCegarLoop]: 531 mSDtfsCounter, 1243 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 4658 mSolverCounterSat, 265 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1243 SdHoareTripleChecker+Valid, 547 SdHoareTripleChecker+Invalid, 4923 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 265 IncrementalHoareTripleChecker+Valid, 4658 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2022-11-20 12:38:03,436 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1243 Valid, 547 Invalid, 4923 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [265 Valid, 4658 Invalid, 0 Unknown, 0 Unchecked, 6.6s Time] [2022-11-20 12:38:03,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138939 states. [2022-11-20 12:38:05,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138939 to 136686. [2022-11-20 12:38:05,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136686 states, 136685 states have (on average 1.1129970369828437) internal successors, (152130), 136685 states have internal predecessors, (152130), 0 states have call successors, (0), 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 12:38:05,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136686 states to 136686 states and 152130 transitions. [2022-11-20 12:38:05,924 INFO L78 Accepts]: Start accepts. Automaton has 136686 states and 152130 transitions. Word has length 654 [2022-11-20 12:38:05,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:38:05,925 INFO L495 AbstractCegarLoop]: Abstraction has 136686 states and 152130 transitions. [2022-11-20 12:38:05,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 161.0) internal successors, (644), 3 states have internal predecessors, (644), 0 states have call successors, (0), 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 12:38:05,925 INFO L276 IsEmpty]: Start isEmpty. Operand 136686 states and 152130 transitions. [2022-11-20 12:38:05,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 659 [2022-11-20 12:38:05,957 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:38:05,958 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:38:05,971 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32f0287-6f71-4593-86a2-4d53993b64b7/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-20 12:38:06,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32f0287-6f71-4593-86a2-4d53993b64b7/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-20 12:38:06,166 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:38:06,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:38:06,167 INFO L85 PathProgramCache]: Analyzing trace with hash -144935900, now seen corresponding path program 1 times [2022-11-20 12:38:06,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:38:06,167 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93895378] [2022-11-20 12:38:06,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:38:06,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:38:06,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:38:07,897 INFO L134 CoverageAnalysis]: Checked inductivity of 369 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 337 trivial. 0 not checked. [2022-11-20 12:38:07,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:38:07,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93895378] [2022-11-20 12:38:07,898 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [93895378] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:38:07,898 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:38:07,899 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:38:07,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309623077] [2022-11-20 12:38:07,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:38:07,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:38:07,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:38:07,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:38:07,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:38:07,902 INFO L87 Difference]: Start difference. First operand 136686 states and 152130 transitions. Second operand has 3 states, 3 states have (on average 140.33333333333334) internal successors, (421), 3 states have internal predecessors, (421), 0 states have call successors, (0), 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 12:38:13,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:38:13,577 INFO L93 Difference]: Finished difference Result 295900 states and 329195 transitions. [2022-11-20 12:38:13,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:38:13,578 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 140.33333333333334) internal successors, (421), 3 states have internal predecessors, (421), 0 states have call successors, (0), 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 658 [2022-11-20 12:38:13,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:38:13,792 INFO L225 Difference]: With dead ends: 295900 [2022-11-20 12:38:13,792 INFO L226 Difference]: Without dead ends: 158465 [2022-11-20 12:38:13,861 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 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 12:38:13,862 INFO L413 NwaCegarLoop]: 894 mSDtfsCounter, 851 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2130 mSolverCounterSat, 595 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 851 SdHoareTripleChecker+Valid, 902 SdHoareTripleChecker+Invalid, 2725 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 595 IncrementalHoareTripleChecker+Valid, 2130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2022-11-20 12:38:13,863 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [851 Valid, 902 Invalid, 2725 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [595 Valid, 2130 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2022-11-20 12:38:14,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158465 states. [2022-11-20 12:38:16,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158465 to 149453. [2022-11-20 12:38:16,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149453 states, 149452 states have (on average 1.0965059015603673) internal successors, (163875), 149452 states have internal predecessors, (163875), 0 states have call successors, (0), 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 12:38:16,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149453 states to 149453 states and 163875 transitions. [2022-11-20 12:38:16,761 INFO L78 Accepts]: Start accepts. Automaton has 149453 states and 163875 transitions. Word has length 658 [2022-11-20 12:38:16,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:38:16,762 INFO L495 AbstractCegarLoop]: Abstraction has 149453 states and 163875 transitions. [2022-11-20 12:38:16,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 140.33333333333334) internal successors, (421), 3 states have internal predecessors, (421), 0 states have call successors, (0), 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 12:38:16,762 INFO L276 IsEmpty]: Start isEmpty. Operand 149453 states and 163875 transitions. [2022-11-20 12:38:16,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 718 [2022-11-20 12:38:16,805 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:38:16,806 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:38:16,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-20 12:38:16,806 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:38:16,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:38:16,807 INFO L85 PathProgramCache]: Analyzing trace with hash 30575756, now seen corresponding path program 1 times [2022-11-20 12:38:16,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:38:16,808 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789955104] [2022-11-20 12:38:16,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:38:16,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:38:16,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat