./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loops-crafted-1/mono-crafted_7.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2fffc1a-349a-417f-964a-1343f3552231/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2fffc1a-349a-417f-964a-1343f3552231/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2fffc1a-349a-417f-964a-1343f3552231/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2fffc1a-349a-417f-964a-1343f3552231/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loops-crafted-1/mono-crafted_7.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2fffc1a-349a-417f-964a-1343f3552231/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2fffc1a-349a-417f-964a-1343f3552231/bin/uautomizer-uyxdKDjOR8 --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 ae51dc9203c351522c25ee3116b2cda704928bb61769972b6b90792bfdf57f19 --- 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-2329fc7 [2022-12-13 11:37:05,797 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 11:37:05,798 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 11:37:05,811 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 11:37:05,811 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 11:37:05,812 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 11:37:05,813 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 11:37:05,814 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 11:37:05,815 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 11:37:05,815 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 11:37:05,816 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 11:37:05,817 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 11:37:05,817 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 11:37:05,817 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 11:37:05,818 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 11:37:05,819 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 11:37:05,819 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 11:37:05,820 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 11:37:05,821 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 11:37:05,822 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 11:37:05,823 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 11:37:05,824 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 11:37:05,825 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 11:37:05,825 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 11:37:05,827 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 11:37:05,828 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 11:37:05,828 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 11:37:05,828 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 11:37:05,829 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 11:37:05,829 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 11:37:05,830 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 11:37:05,830 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 11:37:05,831 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 11:37:05,831 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 11:37:05,832 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 11:37:05,832 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 11:37:05,833 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 11:37:05,833 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 11:37:05,833 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 11:37:05,833 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 11:37:05,834 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 11:37:05,835 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2fffc1a-349a-417f-964a-1343f3552231/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-12-13 11:37:05,849 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 11:37:05,849 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 11:37:05,849 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 11:37:05,849 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 11:37:05,850 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 11:37:05,850 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 11:37:05,851 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 11:37:05,851 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 11:37:05,851 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 11:37:05,851 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 11:37:05,851 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 11:37:05,851 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 11:37:05,851 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 11:37:05,851 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 11:37:05,852 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 11:37:05,852 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 11:37:05,852 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 11:37:05,852 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 11:37:05,852 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 11:37:05,852 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 11:37:05,852 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 11:37:05,853 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 11:37:05,853 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 11:37:05,853 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 11:37:05,853 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 11:37:05,853 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 11:37:05,853 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 11:37:05,853 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 11:37:05,853 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 11:37:05,854 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 11:37:05,854 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 11:37:05,854 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 11:37:05,854 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 11:37:05,854 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 11:37:05,854 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 11:37:05,854 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_d2fffc1a-349a-417f-964a-1343f3552231/bin/uautomizer-uyxdKDjOR8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2fffc1a-349a-417f-964a-1343f3552231/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ae51dc9203c351522c25ee3116b2cda704928bb61769972b6b90792bfdf57f19 [2022-12-13 11:37:06,021 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 11:37:06,037 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 11:37:06,040 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 11:37:06,040 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 11:37:06,041 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 11:37:06,042 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2fffc1a-349a-417f-964a-1343f3552231/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/loops-crafted-1/mono-crafted_7.c [2022-12-13 11:37:08,607 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 11:37:08,751 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 11:37:08,752 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2fffc1a-349a-417f-964a-1343f3552231/sv-benchmarks/c/loops-crafted-1/mono-crafted_7.c [2022-12-13 11:37:08,756 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2fffc1a-349a-417f-964a-1343f3552231/bin/uautomizer-uyxdKDjOR8/data/99e53b737/dd080d54052242f384409ed1351dcc1c/FLAG9b6ed887b [2022-12-13 11:37:08,765 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2fffc1a-349a-417f-964a-1343f3552231/bin/uautomizer-uyxdKDjOR8/data/99e53b737/dd080d54052242f384409ed1351dcc1c [2022-12-13 11:37:08,767 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 11:37:08,768 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 11:37:08,769 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 11:37:08,769 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 11:37:08,772 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 11:37:08,773 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 11:37:08" (1/1) ... [2022-12-13 11:37:08,774 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2eaaff64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:37:08, skipping insertion in model container [2022-12-13 11:37:08,774 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 11:37:08" (1/1) ... [2022-12-13 11:37:08,779 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 11:37:08,788 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 11:37:08,888 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_d2fffc1a-349a-417f-964a-1343f3552231/sv-benchmarks/c/loops-crafted-1/mono-crafted_7.c[318,331] [2022-12-13 11:37:08,898 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 11:37:08,905 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 11:37:08,913 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_d2fffc1a-349a-417f-964a-1343f3552231/sv-benchmarks/c/loops-crafted-1/mono-crafted_7.c[318,331] [2022-12-13 11:37:08,915 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 11:37:08,924 INFO L208 MainTranslator]: Completed translation [2022-12-13 11:37:08,925 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:37:08 WrapperNode [2022-12-13 11:37:08,925 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 11:37:08,925 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 11:37:08,926 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 11:37:08,926 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 11:37:08,931 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:37:08" (1/1) ... [2022-12-13 11:37:08,936 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:37:08" (1/1) ... [2022-12-13 11:37:08,947 INFO L138 Inliner]: procedures = 12, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 42 [2022-12-13 11:37:08,947 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 11:37:08,948 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 11:37:08,948 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 11:37:08,948 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 11:37:08,954 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:37:08" (1/1) ... [2022-12-13 11:37:08,954 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:37:08" (1/1) ... [2022-12-13 11:37:08,955 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:37:08" (1/1) ... [2022-12-13 11:37:08,955 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:37:08" (1/1) ... [2022-12-13 11:37:08,957 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:37:08" (1/1) ... [2022-12-13 11:37:08,959 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:37:08" (1/1) ... [2022-12-13 11:37:08,960 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:37:08" (1/1) ... [2022-12-13 11:37:08,960 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:37:08" (1/1) ... [2022-12-13 11:37:08,961 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 11:37:08,962 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 11:37:08,962 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 11:37:08,962 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 11:37:08,962 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:37:08" (1/1) ... [2022-12-13 11:37:08,967 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 11:37:08,975 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2fffc1a-349a-417f-964a-1343f3552231/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:37:08,986 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2fffc1a-349a-417f-964a-1343f3552231/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 11:37:08,987 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2fffc1a-349a-417f-964a-1343f3552231/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 11:37:09,018 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 11:37:09,018 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 11:37:09,018 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 11:37:09,018 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 11:37:09,070 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 11:37:09,072 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 11:37:09,142 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 11:37:09,147 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 11:37:09,147 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-12-13 11:37:09,149 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 11:37:09 BoogieIcfgContainer [2022-12-13 11:37:09,149 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 11:37:09,151 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 11:37:09,151 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 11:37:09,153 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 11:37:09,153 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 11:37:08" (1/3) ... [2022-12-13 11:37:09,154 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1235a06f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 11:37:09, skipping insertion in model container [2022-12-13 11:37:09,154 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:37:08" (2/3) ... [2022-12-13 11:37:09,154 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1235a06f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 11:37:09, skipping insertion in model container [2022-12-13 11:37:09,154 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 11:37:09" (3/3) ... [2022-12-13 11:37:09,155 INFO L112 eAbstractionObserver]: Analyzing ICFG mono-crafted_7.c [2022-12-13 11:37:09,169 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 11:37:09,169 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-13 11:37:09,203 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 11:37:09,208 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;@37b11506, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 11:37:09,208 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-13 11:37:09,211 INFO L276 IsEmpty]: Start isEmpty. Operand has 13 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 12 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:37:09,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-12-13 11:37:09,214 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:37:09,215 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:37:09,215 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:37:09,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:37:09,219 INFO L85 PathProgramCache]: Analyzing trace with hash 1818421976, now seen corresponding path program 1 times [2022-12-13 11:37:09,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:37:09,225 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052480494] [2022-12-13 11:37:09,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:37:09,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:37:09,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:37:09,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:37:09,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:37:09,313 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052480494] [2022-12-13 11:37:09,314 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2052480494] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:37:09,314 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:37:09,314 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 11:37:09,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199723114] [2022-12-13 11:37:09,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:37:09,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-13 11:37:09,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:37:09,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-13 11:37:09,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 11:37:09,342 INFO L87 Difference]: Start difference. First operand has 13 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 12 states have internal predecessors, (18), 0 states have call successors, (0), 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 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:37:09,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:37:09,352 INFO L93 Difference]: Finished difference Result 22 states and 29 transitions. [2022-12-13 11:37:09,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 11:37:09,354 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 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 7 [2022-12-13 11:37:09,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:37:09,366 INFO L225 Difference]: With dead ends: 22 [2022-12-13 11:37:09,366 INFO L226 Difference]: Without dead ends: 9 [2022-12-13 11:37:09,369 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 11:37:09,372 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 11:37:09,373 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 11:37:09,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2022-12-13 11:37:09,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2022-12-13 11:37:09,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.375) internal successors, (11), 8 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:37:09,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 11 transitions. [2022-12-13 11:37:09,400 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 11 transitions. Word has length 7 [2022-12-13 11:37:09,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:37:09,401 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 11 transitions. [2022-12-13 11:37:09,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:37:09,401 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 11 transitions. [2022-12-13 11:37:09,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-12-13 11:37:09,401 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:37:09,401 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:37:09,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 11:37:09,402 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:37:09,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:37:09,402 INFO L85 PathProgramCache]: Analyzing trace with hash 1809186766, now seen corresponding path program 1 times [2022-12-13 11:37:09,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:37:09,403 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374531994] [2022-12-13 11:37:09,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:37:09,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:37:09,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:37:09,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:37:09,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:37:09,453 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374531994] [2022-12-13 11:37:09,453 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [374531994] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:37:09,453 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:37:09,453 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 11:37:09,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83908494] [2022-12-13 11:37:09,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:37:09,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 11:37:09,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:37:09,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 11:37:09,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 11:37:09,456 INFO L87 Difference]: Start difference. First operand 9 states and 11 transitions. Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:37:09,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:37:09,471 INFO L93 Difference]: Finished difference Result 18 states and 24 transitions. [2022-12-13 11:37:09,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 11:37:09,472 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 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 7 [2022-12-13 11:37:09,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:37:09,472 INFO L225 Difference]: With dead ends: 18 [2022-12-13 11:37:09,472 INFO L226 Difference]: Without dead ends: 11 [2022-12-13 11:37:09,472 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 11:37:09,473 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 1 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 11:37:09,474 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 13 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 11:37:09,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2022-12-13 11:37:09,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2022-12-13 11:37:09,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.3) internal successors, (13), 10 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) [2022-12-13 11:37:09,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 13 transitions. [2022-12-13 11:37:09,476 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 13 transitions. Word has length 7 [2022-12-13 11:37:09,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:37:09,477 INFO L495 AbstractCegarLoop]: Abstraction has 11 states and 13 transitions. [2022-12-13 11:37:09,477 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:37:09,477 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 13 transitions. [2022-12-13 11:37:09,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-12-13 11:37:09,477 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:37:09,477 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:37:09,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 11:37:09,478 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:37:09,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:37:09,478 INFO L85 PathProgramCache]: Analyzing trace with hash 576672011, now seen corresponding path program 1 times [2022-12-13 11:37:09,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:37:09,478 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96371292] [2022-12-13 11:37:09,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:37:09,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:37:09,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:37:09,513 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 11:37:09,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:37:09,513 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96371292] [2022-12-13 11:37:09,514 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [96371292] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:37:09,514 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:37:09,514 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 11:37:09,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855009407] [2022-12-13 11:37:09,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:37:09,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 11:37:09,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:37:09,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 11:37:09,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 11:37:09,516 INFO L87 Difference]: Start difference. First operand 11 states and 13 transitions. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:37:09,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:37:09,524 INFO L93 Difference]: Finished difference Result 16 states and 18 transitions. [2022-12-13 11:37:09,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 11:37:09,525 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 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 9 [2022-12-13 11:37:09,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:37:09,525 INFO L225 Difference]: With dead ends: 16 [2022-12-13 11:37:09,525 INFO L226 Difference]: Without dead ends: 12 [2022-12-13 11:37:09,525 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 [2022-12-13 11:37:09,526 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 0 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 11:37:09,527 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 13 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 11:37:09,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2022-12-13 11:37:09,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2022-12-13 11:37:09,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 11 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:37:09,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 14 transitions. [2022-12-13 11:37:09,529 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 14 transitions. Word has length 9 [2022-12-13 11:37:09,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:37:09,529 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 14 transitions. [2022-12-13 11:37:09,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:37:09,530 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 14 transitions. [2022-12-13 11:37:09,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-12-13 11:37:09,530 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:37:09,530 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:37:09,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 11:37:09,530 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:37:09,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:37:09,531 INFO L85 PathProgramCache]: Analyzing trace with hash 698628545, now seen corresponding path program 1 times [2022-12-13 11:37:09,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:37:09,531 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382637283] [2022-12-13 11:37:09,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:37:09,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:37:09,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:37:09,582 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 11:37:09,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:37:09,582 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382637283] [2022-12-13 11:37:09,582 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [382637283] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:37:09,582 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [703868697] [2022-12-13 11:37:09,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:37:09,583 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:37:09,583 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2fffc1a-349a-417f-964a-1343f3552231/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:37:09,584 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2fffc1a-349a-417f-964a-1343f3552231/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:37:09,585 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2fffc1a-349a-417f-964a-1343f3552231/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 11:37:09,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:37:09,622 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 11:37:09,626 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:37:09,657 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 11:37:09,658 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:37:09,680 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 11:37:09,680 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [703868697] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:37:09,681 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:37:09,681 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2022-12-13 11:37:09,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207520073] [2022-12-13 11:37:09,681 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:37:09,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 11:37:09,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:37:09,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 11:37:09,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-12-13 11:37:09,683 INFO L87 Difference]: Start difference. First operand 12 states and 14 transitions. Second operand has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 7 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:37:09,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:37:09,712 INFO L93 Difference]: Finished difference Result 25 states and 34 transitions. [2022-12-13 11:37:09,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 11:37:09,712 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 7 states have internal predecessors, (17), 0 states have call successors, (0), 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 10 [2022-12-13 11:37:09,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:37:09,713 INFO L225 Difference]: With dead ends: 25 [2022-12-13 11:37:09,713 INFO L226 Difference]: Without dead ends: 17 [2022-12-13 11:37:09,713 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-12-13 11:37:09,714 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 2 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 11:37:09,714 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 16 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 11:37:09,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-12-13 11:37:09,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2022-12-13 11:37:09,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.25) internal successors, (20), 16 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:37:09,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 20 transitions. [2022-12-13 11:37:09,718 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 20 transitions. Word has length 10 [2022-12-13 11:37:09,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:37:09,718 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 20 transitions. [2022-12-13 11:37:09,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 7 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:37:09,718 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 20 transitions. [2022-12-13 11:37:09,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-12-13 11:37:09,719 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:37:09,719 INFO L195 NwaCegarLoop]: trace histogram [4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:37:09,723 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2fffc1a-349a-417f-964a-1343f3552231/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 11:37:09,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2fffc1a-349a-417f-964a-1343f3552231/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:37:09,921 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:37:09,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:37:09,923 INFO L85 PathProgramCache]: Analyzing trace with hash -693598994, now seen corresponding path program 1 times [2022-12-13 11:37:09,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:37:09,924 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483825061] [2022-12-13 11:37:09,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:37:09,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:37:09,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:37:10,102 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 11:37:10,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:37:10,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483825061] [2022-12-13 11:37:10,103 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1483825061] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:37:10,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [450765647] [2022-12-13 11:37:10,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:37:10,103 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:37:10,103 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2fffc1a-349a-417f-964a-1343f3552231/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:37:10,104 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2fffc1a-349a-417f-964a-1343f3552231/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:37:10,105 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2fffc1a-349a-417f-964a-1343f3552231/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 11:37:10,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:37:10,142 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 11:37:10,143 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:37:10,162 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 11:37:10,162 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:37:10,190 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 11:37:10,190 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [450765647] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:37:10,191 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:37:10,191 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2022-12-13 11:37:10,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254449552] [2022-12-13 11:37:10,191 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:37:10,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 11:37:10,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:37:10,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 11:37:10,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2022-12-13 11:37:10,193 INFO L87 Difference]: Start difference. First operand 17 states and 20 transitions. Second operand has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:37:10,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:37:10,222 INFO L93 Difference]: Finished difference Result 36 states and 46 transitions. [2022-12-13 11:37:10,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 11:37:10,223 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 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 16 [2022-12-13 11:37:10,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:37:10,224 INFO L225 Difference]: With dead ends: 36 [2022-12-13 11:37:10,224 INFO L226 Difference]: Without dead ends: 25 [2022-12-13 11:37:10,224 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2022-12-13 11:37:10,225 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 0 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 11:37:10,226 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 21 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 11:37:10,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2022-12-13 11:37:10,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2022-12-13 11:37:10,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 24 states have (on average 1.1666666666666667) internal successors, (28), 24 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:37:10,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2022-12-13 11:37:10,230 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 16 [2022-12-13 11:37:10,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:37:10,230 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2022-12-13 11:37:10,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:37:10,230 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2022-12-13 11:37:10,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-12-13 11:37:10,231 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:37:10,231 INFO L195 NwaCegarLoop]: trace histogram [8, 6, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:37:10,235 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2fffc1a-349a-417f-964a-1343f3552231/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-13 11:37:10,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2fffc1a-349a-417f-964a-1343f3552231/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:37:10,432 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:37:10,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:37:10,433 INFO L85 PathProgramCache]: Analyzing trace with hash 219186682, now seen corresponding path program 2 times [2022-12-13 11:37:10,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:37:10,434 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032616923] [2022-12-13 11:37:10,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:37:10,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:37:10,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:37:10,648 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 21 proven. 42 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 11:37:10,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:37:10,648 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032616923] [2022-12-13 11:37:10,648 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2032616923] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:37:10,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [134830180] [2022-12-13 11:37:10,649 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 11:37:10,649 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:37:10,649 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2fffc1a-349a-417f-964a-1343f3552231/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:37:10,650 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2fffc1a-349a-417f-964a-1343f3552231/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:37:10,651 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2fffc1a-349a-417f-964a-1343f3552231/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 11:37:10,687 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 11:37:10,687 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 11:37:10,687 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-13 11:37:10,689 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:37:10,720 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 21 proven. 42 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 11:37:10,721 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:37:10,805 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 21 proven. 42 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 11:37:10,805 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [134830180] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:37:10,809 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:37:10,809 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 17 [2022-12-13 11:37:10,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217352412] [2022-12-13 11:37:10,809 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:37:10,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-12-13 11:37:10,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:37:10,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-12-13 11:37:10,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2022-12-13 11:37:10,811 INFO L87 Difference]: Start difference. First operand 25 states and 28 transitions. Second operand has 17 states, 17 states have (on average 2.4705882352941178) internal successors, (42), 17 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:37:10,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:37:10,849 INFO L93 Difference]: Finished difference Result 52 states and 66 transitions. [2022-12-13 11:37:10,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-12-13 11:37:10,849 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.4705882352941178) internal successors, (42), 17 states have internal predecessors, (42), 0 states have call successors, (0), 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 24 [2022-12-13 11:37:10,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:37:10,850 INFO L225 Difference]: With dead ends: 52 [2022-12-13 11:37:10,850 INFO L226 Difference]: Without dead ends: 41 [2022-12-13 11:37:10,851 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2022-12-13 11:37:10,852 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 0 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 11:37:10,852 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 25 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 11:37:10,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2022-12-13 11:37:10,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2022-12-13 11:37:10,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 40 states have (on average 1.1) internal successors, (44), 40 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:37:10,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 44 transitions. [2022-12-13 11:37:10,856 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 44 transitions. Word has length 24 [2022-12-13 11:37:10,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:37:10,856 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 44 transitions. [2022-12-13 11:37:10,857 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.4705882352941178) internal successors, (42), 17 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:37:10,857 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 44 transitions. [2022-12-13 11:37:10,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-12-13 11:37:10,858 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:37:10,858 INFO L195 NwaCegarLoop]: trace histogram [16, 14, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:37:10,863 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2fffc1a-349a-417f-964a-1343f3552231/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-13 11:37:11,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2fffc1a-349a-417f-964a-1343f3552231/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:37:11,060 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:37:11,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:37:11,062 INFO L85 PathProgramCache]: Analyzing trace with hash 1801004050, now seen corresponding path program 3 times [2022-12-13 11:37:11,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:37:11,063 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996924950] [2022-12-13 11:37:11,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:37:11,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:37:11,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:37:11,377 INFO L134 CoverageAnalysis]: Checked inductivity of 257 backedges. 45 proven. 210 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 11:37:11,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:37:11,377 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996924950] [2022-12-13 11:37:11,377 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1996924950] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:37:11,377 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1362784207] [2022-12-13 11:37:11,377 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 11:37:11,378 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:37:11,378 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2fffc1a-349a-417f-964a-1343f3552231/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:37:11,379 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2fffc1a-349a-417f-964a-1343f3552231/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:37:11,379 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2fffc1a-349a-417f-964a-1343f3552231/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-13 11:37:11,414 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-12-13 11:37:11,414 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 11:37:11,414 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-13 11:37:11,416 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:37:11,481 INFO L134 CoverageAnalysis]: Checked inductivity of 257 backedges. 46 proven. 1 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2022-12-13 11:37:11,481 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:37:11,538 INFO L134 CoverageAnalysis]: Checked inductivity of 257 backedges. 46 proven. 1 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2022-12-13 11:37:11,538 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1362784207] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:37:11,539 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:37:11,539 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 5, 5] total 23 [2022-12-13 11:37:11,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646175093] [2022-12-13 11:37:11,539 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:37:11,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-12-13 11:37:11,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:37:11,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-12-13 11:37:11,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=163, Invalid=343, Unknown=0, NotChecked=0, Total=506 [2022-12-13 11:37:11,541 INFO L87 Difference]: Start difference. First operand 41 states and 44 transitions. Second operand has 23 states, 23 states have (on average 2.5217391304347827) internal successors, (58), 23 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:37:11,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:37:11,716 INFO L93 Difference]: Finished difference Result 63 states and 76 transitions. [2022-12-13 11:37:11,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-12-13 11:37:11,717 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.5217391304347827) internal successors, (58), 23 states have internal predecessors, (58), 0 states have call successors, (0), 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 40 [2022-12-13 11:37:11,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:37:11,717 INFO L225 Difference]: With dead ends: 63 [2022-12-13 11:37:11,717 INFO L226 Difference]: Without dead ends: 52 [2022-12-13 11:37:11,718 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 216 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=478, Invalid=928, Unknown=0, NotChecked=0, Total=1406 [2022-12-13 11:37:11,718 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 3 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 11:37:11,719 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 25 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 11:37:11,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2022-12-13 11:37:11,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 46. [2022-12-13 11:37:11,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 45 states have (on average 1.0888888888888888) internal successors, (49), 45 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:37:11,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 49 transitions. [2022-12-13 11:37:11,723 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 49 transitions. Word has length 40 [2022-12-13 11:37:11,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:37:11,723 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 49 transitions. [2022-12-13 11:37:11,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.5217391304347827) internal successors, (58), 23 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:37:11,724 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 49 transitions. [2022-12-13 11:37:11,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-12-13 11:37:11,725 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:37:11,725 INFO L195 NwaCegarLoop]: trace histogram [17, 15, 4, 2, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:37:11,729 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2fffc1a-349a-417f-964a-1343f3552231/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-13 11:37:11,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2fffc1a-349a-417f-964a-1343f3552231/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:37:11,927 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:37:11,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:37:11,927 INFO L85 PathProgramCache]: Analyzing trace with hash 1274064215, now seen corresponding path program 4 times [2022-12-13 11:37:11,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:37:11,928 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801506350] [2022-12-13 11:37:11,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:37:11,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:37:11,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:37:12,271 INFO L134 CoverageAnalysis]: Checked inductivity of 299 backedges. 48 proven. 240 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-12-13 11:37:12,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:37:12,272 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801506350] [2022-12-13 11:37:12,272 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [801506350] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:37:12,272 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [898939962] [2022-12-13 11:37:12,272 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-13 11:37:12,272 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:37:12,272 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2fffc1a-349a-417f-964a-1343f3552231/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:37:12,273 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2fffc1a-349a-417f-964a-1343f3552231/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:37:12,274 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2fffc1a-349a-417f-964a-1343f3552231/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-13 11:37:12,319 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-13 11:37:12,319 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 11:37:12,320 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 17 conjunts are in the unsatisfiable core [2022-12-13 11:37:12,322 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:37:12,371 INFO L134 CoverageAnalysis]: Checked inductivity of 299 backedges. 48 proven. 240 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-12-13 11:37:12,372 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:37:12,662 INFO L134 CoverageAnalysis]: Checked inductivity of 299 backedges. 48 proven. 240 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-12-13 11:37:12,662 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [898939962] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:37:12,662 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:37:12,662 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 35 [2022-12-13 11:37:12,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347164181] [2022-12-13 11:37:12,663 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:37:12,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-12-13 11:37:12,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:37:12,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-12-13 11:37:12,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=595, Invalid=595, Unknown=0, NotChecked=0, Total=1190 [2022-12-13 11:37:12,665 INFO L87 Difference]: Start difference. First operand 46 states and 49 transitions. Second operand has 35 states, 35 states have (on average 2.2285714285714286) internal successors, (78), 35 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:37:12,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:37:12,756 INFO L93 Difference]: Finished difference Result 94 states and 117 transitions. [2022-12-13 11:37:12,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-12-13 11:37:12,756 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.2285714285714286) internal successors, (78), 35 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2022-12-13 11:37:12,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:37:12,757 INFO L225 Difference]: With dead ends: 94 [2022-12-13 11:37:12,758 INFO L226 Difference]: Without dead ends: 80 [2022-12-13 11:37:12,759 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=595, Invalid=595, Unknown=0, NotChecked=0, Total=1190 [2022-12-13 11:37:12,759 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 0 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 11:37:12,760 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 25 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 11:37:12,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2022-12-13 11:37:12,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2022-12-13 11:37:12,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 79 states have (on average 1.0506329113924051) internal successors, (83), 79 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:37:12,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 83 transitions. [2022-12-13 11:37:12,770 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 83 transitions. Word has length 45 [2022-12-13 11:37:12,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:37:12,770 INFO L495 AbstractCegarLoop]: Abstraction has 80 states and 83 transitions. [2022-12-13 11:37:12,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 2.2285714285714286) internal successors, (78), 35 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:37:12,771 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 83 transitions. [2022-12-13 11:37:12,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-12-13 11:37:12,771 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:37:12,771 INFO L195 NwaCegarLoop]: trace histogram [34, 32, 4, 2, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:37:12,776 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2fffc1a-349a-417f-964a-1343f3552231/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-13 11:37:12,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2fffc1a-349a-417f-964a-1343f3552231/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:37:12,973 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:37:12,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:37:12,973 INFO L85 PathProgramCache]: Analyzing trace with hash -194287964, now seen corresponding path program 5 times [2022-12-13 11:37:12,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:37:12,974 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171931555] [2022-12-13 11:37:12,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:37:12,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:37:13,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:37:13,634 INFO L134 CoverageAnalysis]: Checked inductivity of 1166 backedges. 99 proven. 1056 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-12-13 11:37:13,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:37:13,634 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171931555] [2022-12-13 11:37:13,634 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1171931555] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:37:13,634 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1240475544] [2022-12-13 11:37:13,634 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-13 11:37:13,634 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:37:13,634 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2fffc1a-349a-417f-964a-1343f3552231/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:37:13,635 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2fffc1a-349a-417f-964a-1343f3552231/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:37:13,636 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2fffc1a-349a-417f-964a-1343f3552231/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-13 11:37:13,695 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 35 check-sat command(s) [2022-12-13 11:37:13,695 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 11:37:13,697 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 34 conjunts are in the unsatisfiable core [2022-12-13 11:37:13,700 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:37:13,796 INFO L134 CoverageAnalysis]: Checked inductivity of 1166 backedges. 99 proven. 1056 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-12-13 11:37:13,796 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:37:14,836 INFO L134 CoverageAnalysis]: Checked inductivity of 1166 backedges. 99 proven. 1056 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-12-13 11:37:14,836 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1240475544] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:37:14,836 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:37:14,836 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35, 35] total 69 [2022-12-13 11:37:14,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610994507] [2022-12-13 11:37:14,836 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:37:14,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2022-12-13 11:37:14,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:37:14,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2022-12-13 11:37:14,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2346, Invalid=2346, Unknown=0, NotChecked=0, Total=4692 [2022-12-13 11:37:14,841 INFO L87 Difference]: Start difference. First operand 80 states and 83 transitions. Second operand has 69 states, 69 states have (on average 2.1159420289855073) internal successors, (146), 69 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:37:15,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:37:15,081 INFO L93 Difference]: Finished difference Result 162 states and 202 transitions. [2022-12-13 11:37:15,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2022-12-13 11:37:15,081 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 69 states have (on average 2.1159420289855073) internal successors, (146), 69 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-12-13 11:37:15,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:37:15,082 INFO L225 Difference]: With dead ends: 162 [2022-12-13 11:37:15,082 INFO L226 Difference]: Without dead ends: 148 [2022-12-13 11:37:15,084 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=2346, Invalid=2346, Unknown=0, NotChecked=0, Total=4692 [2022-12-13 11:37:15,085 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 0 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 11:37:15,085 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 33 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 11:37:15,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2022-12-13 11:37:15,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 148. [2022-12-13 11:37:15,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 147 states have (on average 1.0272108843537415) internal successors, (151), 147 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:37:15,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 151 transitions. [2022-12-13 11:37:15,102 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 151 transitions. Word has length 79 [2022-12-13 11:37:15,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:37:15,103 INFO L495 AbstractCegarLoop]: Abstraction has 148 states and 151 transitions. [2022-12-13 11:37:15,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 69 states, 69 states have (on average 2.1159420289855073) internal successors, (146), 69 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:37:15,103 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 151 transitions. [2022-12-13 11:37:15,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-12-13 11:37:15,106 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:37:15,107 INFO L195 NwaCegarLoop]: trace histogram [68, 66, 4, 2, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:37:15,112 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2fffc1a-349a-417f-964a-1343f3552231/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-13 11:37:15,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2fffc1a-349a-417f-964a-1343f3552231/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:37:15,308 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:37:15,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:37:15,309 INFO L85 PathProgramCache]: Analyzing trace with hash 568323966, now seen corresponding path program 6 times [2022-12-13 11:37:15,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:37:15,309 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885078860] [2022-12-13 11:37:15,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:37:15,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:37:15,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:37:17,264 INFO L134 CoverageAnalysis]: Checked inductivity of 4634 backedges. 201 proven. 4422 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-12-13 11:37:17,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:37:17,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885078860] [2022-12-13 11:37:17,265 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1885078860] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:37:17,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [740154116] [2022-12-13 11:37:17,265 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-12-13 11:37:17,265 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:37:17,265 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2fffc1a-349a-417f-964a-1343f3552231/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:37:17,266 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2fffc1a-349a-417f-964a-1343f3552231/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:37:17,267 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2fffc1a-349a-417f-964a-1343f3552231/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-13 11:37:17,311 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2022-12-13 11:37:17,311 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 11:37:17,312 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-13 11:37:17,315 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:37:17,573 INFO L134 CoverageAnalysis]: Checked inductivity of 4634 backedges. 202 proven. 10 refuted. 0 times theorem prover too weak. 4422 trivial. 0 not checked. [2022-12-13 11:37:17,573 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:37:17,798 INFO L134 CoverageAnalysis]: Checked inductivity of 4634 backedges. 202 proven. 10 refuted. 0 times theorem prover too weak. 4422 trivial. 0 not checked. [2022-12-13 11:37:17,798 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [740154116] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:37:17,798 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:37:17,798 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [69, 8, 8] total 81 [2022-12-13 11:37:17,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342298054] [2022-12-13 11:37:17,798 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:37:17,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 81 states [2022-12-13 11:37:17,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:37:17,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2022-12-13 11:37:17,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2436, Invalid=4044, Unknown=0, NotChecked=0, Total=6480 [2022-12-13 11:37:17,801 INFO L87 Difference]: Start difference. First operand 148 states and 151 transitions. Second operand has 81 states, 81 states have (on average 2.074074074074074) internal successors, (168), 81 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:37:19,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:37:19,421 INFO L93 Difference]: Finished difference Result 176 states and 192 transitions. [2022-12-13 11:37:19,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2022-12-13 11:37:19,421 INFO L78 Accepts]: Start accepts. Automaton has has 81 states, 81 states have (on average 2.074074074074074) internal successors, (168), 81 states have internal predecessors, (168), 0 states have call successors, (0), 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 147 [2022-12-13 11:37:19,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:37:19,422 INFO L225 Difference]: With dead ends: 176 [2022-12-13 11:37:19,422 INFO L226 Difference]: Without dead ends: 162 [2022-12-13 11:37:19,425 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 428 GetRequests, 282 SyntacticMatches, 0 SemanticMatches, 146 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3106 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=7729, Invalid=14027, Unknown=0, NotChecked=0, Total=21756 [2022-12-13 11:37:19,425 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 3 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 11:37:19,426 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 61 Invalid, 244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 242 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 11:37:19,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2022-12-13 11:37:19,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 156. [2022-12-13 11:37:19,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 155 states have (on average 1.0258064516129033) internal successors, (159), 155 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:37:19,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 159 transitions. [2022-12-13 11:37:19,434 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 159 transitions. Word has length 147 [2022-12-13 11:37:19,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:37:19,434 INFO L495 AbstractCegarLoop]: Abstraction has 156 states and 159 transitions. [2022-12-13 11:37:19,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 81 states, 81 states have (on average 2.074074074074074) internal successors, (168), 81 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:37:19,435 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 159 transitions. [2022-12-13 11:37:19,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2022-12-13 11:37:19,436 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:37:19,436 INFO L195 NwaCegarLoop]: trace histogram [69, 67, 10, 2, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:37:19,439 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2fffc1a-349a-417f-964a-1343f3552231/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-12-13 11:37:19,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2fffc1a-349a-417f-964a-1343f3552231/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-12-13 11:37:19,637 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:37:19,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:37:19,639 INFO L85 PathProgramCache]: Analyzing trace with hash 1924451707, now seen corresponding path program 7 times [2022-12-13 11:37:19,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:37:19,639 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864366734] [2022-12-13 11:37:19,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:37:19,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:37:19,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:37:21,426 INFO L134 CoverageAnalysis]: Checked inductivity of 4816 backedges. 204 proven. 4556 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2022-12-13 11:37:21,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:37:21,427 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864366734] [2022-12-13 11:37:21,427 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1864366734] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:37:21,427 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [356017696] [2022-12-13 11:37:21,427 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-13 11:37:21,427 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:37:21,427 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2fffc1a-349a-417f-964a-1343f3552231/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:37:21,428 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2fffc1a-349a-417f-964a-1343f3552231/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:37:21,429 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2fffc1a-349a-417f-964a-1343f3552231/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-13 11:37:21,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:37:21,500 INFO L263 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 69 conjunts are in the unsatisfiable core [2022-12-13 11:37:21,502 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:37:21,658 INFO L134 CoverageAnalysis]: Checked inductivity of 4816 backedges. 204 proven. 4556 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2022-12-13 11:37:21,658 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:37:25,277 INFO L134 CoverageAnalysis]: Checked inductivity of 4816 backedges. 204 proven. 4556 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2022-12-13 11:37:25,277 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [356017696] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:37:25,277 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:37:25,277 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [70, 70, 70] total 139 [2022-12-13 11:37:25,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236516790] [2022-12-13 11:37:25,277 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:37:25,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 139 states [2022-12-13 11:37:25,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:37:25,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 139 interpolants. [2022-12-13 11:37:25,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9591, Invalid=9591, Unknown=0, NotChecked=0, Total=19182 [2022-12-13 11:37:25,282 INFO L87 Difference]: Start difference. First operand 156 states and 159 transitions. Second operand has 139 states, 139 states have (on average 2.0575539568345325) internal successors, (286), 139 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:37:25,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:37:25,643 INFO L93 Difference]: Finished difference Result 314 states and 389 transitions. [2022-12-13 11:37:25,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 138 states. [2022-12-13 11:37:25,643 INFO L78 Accepts]: Start accepts. Automaton has has 139 states, 139 states have (on average 2.0575539568345325) internal successors, (286), 139 states have internal predecessors, (286), 0 states have call successors, (0), 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 155 [2022-12-13 11:37:25,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:37:25,646 INFO L225 Difference]: With dead ends: 314 [2022-12-13 11:37:25,646 INFO L226 Difference]: Without dead ends: 294 [2022-12-13 11:37:25,647 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 378 GetRequests, 241 SyntacticMatches, 0 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 268 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=9591, Invalid=9591, Unknown=0, NotChecked=0, Total=19182 [2022-12-13 11:37:25,648 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 0 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 310 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 311 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 11:37:25,648 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 45 Invalid, 311 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 310 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 11:37:25,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2022-12-13 11:37:25,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 294. [2022-12-13 11:37:25,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 294 states, 293 states have (on average 1.0136518771331058) internal successors, (297), 293 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:37:25,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 297 transitions. [2022-12-13 11:37:25,662 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 297 transitions. Word has length 155 [2022-12-13 11:37:25,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:37:25,662 INFO L495 AbstractCegarLoop]: Abstraction has 294 states and 297 transitions. [2022-12-13 11:37:25,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 139 states, 139 states have (on average 2.0575539568345325) internal successors, (286), 139 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:37:25,662 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 297 transitions. [2022-12-13 11:37:25,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2022-12-13 11:37:25,665 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:37:25,665 INFO L195 NwaCegarLoop]: trace histogram [138, 136, 10, 2, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:37:25,669 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2fffc1a-349a-417f-964a-1343f3552231/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-12-13 11:37:25,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2fffc1a-349a-417f-964a-1343f3552231/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:37:25,867 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:37:25,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:37:25,868 INFO L85 PathProgramCache]: Analyzing trace with hash 25602028, now seen corresponding path program 8 times [2022-12-13 11:37:25,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:37:25,869 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823921287] [2022-12-13 11:37:25,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:37:25,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:37:25,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:37:33,270 INFO L134 CoverageAnalysis]: Checked inductivity of 19099 backedges. 411 proven. 18632 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2022-12-13 11:37:33,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:37:33,271 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823921287] [2022-12-13 11:37:33,271 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1823921287] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:37:33,271 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1844531173] [2022-12-13 11:37:33,271 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 11:37:33,271 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:37:33,271 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2fffc1a-349a-417f-964a-1343f3552231/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:37:33,272 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2fffc1a-349a-417f-964a-1343f3552231/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:37:33,273 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2fffc1a-349a-417f-964a-1343f3552231/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-12-13 11:37:33,364 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 11:37:33,365 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 11:37:33,369 INFO L263 TraceCheckSpWp]: Trace formula consists of 646 conjuncts, 138 conjunts are in the unsatisfiable core [2022-12-13 11:37:33,373 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:37:33,638 INFO L134 CoverageAnalysis]: Checked inductivity of 19099 backedges. 411 proven. 18632 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2022-12-13 11:37:33,639 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:37:46,846 INFO L134 CoverageAnalysis]: Checked inductivity of 19099 backedges. 411 proven. 18632 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2022-12-13 11:37:46,846 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1844531173] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:37:46,846 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:37:46,846 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [139, 139, 139] total 277 [2022-12-13 11:37:46,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253115104] [2022-12-13 11:37:46,846 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:37:46,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 277 states [2022-12-13 11:37:46,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:37:46,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 277 interpolants. [2022-12-13 11:37:46,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38226, Invalid=38226, Unknown=0, NotChecked=0, Total=76452 [2022-12-13 11:37:46,858 INFO L87 Difference]: Start difference. First operand 294 states and 297 transitions. Second operand has 277 states, 277 states have (on average 2.0288808664259927) internal successors, (562), 277 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:37:48,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:37:48,241 INFO L93 Difference]: Finished difference Result 590 states and 734 transitions. [2022-12-13 11:37:48,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 276 states. [2022-12-13 11:37:48,241 INFO L78 Accepts]: Start accepts. Automaton has has 277 states, 277 states have (on average 2.0288808664259927) internal successors, (562), 277 states have internal predecessors, (562), 0 states have call successors, (0), 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 293 [2022-12-13 11:37:48,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:37:48,242 INFO L225 Difference]: With dead ends: 590 [2022-12-13 11:37:48,242 INFO L226 Difference]: Without dead ends: 570 [2022-12-13 11:37:48,246 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 723 GetRequests, 448 SyntacticMatches, 0 SemanticMatches, 275 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 544 ImplicationChecksByTransitivity, 17.9s TimeCoverageRelationStatistics Valid=38226, Invalid=38226, Unknown=0, NotChecked=0, Total=76452 [2022-12-13 11:37:48,246 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 0 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 578 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 579 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 578 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-13 11:37:48,246 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 37 Invalid, 579 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 578 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-13 11:37:48,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 570 states. [2022-12-13 11:37:48,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 570 to 570. [2022-12-13 11:37:48,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 570 states, 569 states have (on average 1.0070298769771528) internal successors, (573), 569 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:37:48,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 570 states to 570 states and 573 transitions. [2022-12-13 11:37:48,269 INFO L78 Accepts]: Start accepts. Automaton has 570 states and 573 transitions. Word has length 293 [2022-12-13 11:37:48,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:37:48,269 INFO L495 AbstractCegarLoop]: Abstraction has 570 states and 573 transitions. [2022-12-13 11:37:48,269 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 277 states, 277 states have (on average 2.0288808664259927) internal successors, (562), 277 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:37:48,269 INFO L276 IsEmpty]: Start isEmpty. Operand 570 states and 573 transitions. [2022-12-13 11:37:48,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 570 [2022-12-13 11:37:48,277 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:37:48,277 INFO L195 NwaCegarLoop]: trace histogram [276, 274, 10, 2, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:37:48,282 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2fffc1a-349a-417f-964a-1343f3552231/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-12-13 11:37:48,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2fffc1a-349a-417f-964a-1343f3552231/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-12-13 11:37:48,479 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:37:48,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:37:48,480 INFO L85 PathProgramCache]: Analyzing trace with hash -515641074, now seen corresponding path program 9 times [2022-12-13 11:37:48,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:37:48,481 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071643450] [2022-12-13 11:37:48,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:37:48,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:37:48,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:38:19,943 INFO L134 CoverageAnalysis]: Checked inductivity of 76231 backedges. 825 proven. 75350 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2022-12-13 11:38:19,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:38:19,943 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071643450] [2022-12-13 11:38:19,943 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2071643450] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:38:19,943 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1685254051] [2022-12-13 11:38:19,943 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 11:38:19,944 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:38:19,944 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2fffc1a-349a-417f-964a-1343f3552231/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:38:19,944 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2fffc1a-349a-417f-964a-1343f3552231/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:38:19,945 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2fffc1a-349a-417f-964a-1343f3552231/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-12-13 11:38:20,010 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-12-13 11:38:20,010 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 11:38:20,011 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-13 11:38:20,015 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:38:20,392 INFO L134 CoverageAnalysis]: Checked inductivity of 76231 backedges. 1370 proven. 4 refuted. 0 times theorem prover too weak. 74857 trivial. 0 not checked. [2022-12-13 11:38:20,392 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:38:20,829 INFO L134 CoverageAnalysis]: Checked inductivity of 76231 backedges. 1370 proven. 4 refuted. 0 times theorem prover too weak. 74857 trivial. 0 not checked. [2022-12-13 11:38:20,829 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1685254051] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:38:20,829 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:38:20,830 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [277, 5, 5] total 283 [2022-12-13 11:38:20,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298497800] [2022-12-13 11:38:20,830 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:38:20,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 283 states [2022-12-13 11:38:20,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:38:20,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 283 interpolants. [2022-12-13 11:38:20,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39903, Invalid=39903, Unknown=0, NotChecked=0, Total=79806 [2022-12-13 11:38:20,845 INFO L87 Difference]: Start difference. First operand 570 states and 573 transitions. Second operand has 283 states, 283 states have (on average 2.0318021201413425) internal successors, (575), 283 states have internal predecessors, (575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:38:21,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:38:21,970 INFO L93 Difference]: Finished difference Result 600 states and 615 transitions. [2022-12-13 11:38:21,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 283 states. [2022-12-13 11:38:21,970 INFO L78 Accepts]: Start accepts. Automaton has has 283 states, 283 states have (on average 2.0318021201413425) internal successors, (575), 283 states have internal predecessors, (575), 0 states have call successors, (0), 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 569 [2022-12-13 11:38:21,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:38:21,973 INFO L225 Difference]: With dead ends: 600 [2022-12-13 11:38:21,973 INFO L226 Difference]: Without dead ends: 580 [2022-12-13 11:38:21,976 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1413 GetRequests, 1132 SyntacticMatches, 0 SemanticMatches, 281 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 19.7s TimeCoverageRelationStatistics Valid=39903, Invalid=39903, Unknown=0, NotChecked=0, Total=79806 [2022-12-13 11:38:21,977 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 2 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 582 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 584 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 582 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-13 11:38:21,977 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 24 Invalid, 584 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 582 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-13 11:38:21,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 580 states. [2022-12-13 11:38:22,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 580 to 580. [2022-12-13 11:38:22,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 580 states, 579 states have (on average 1.0138169257340242) internal successors, (587), 579 states have internal predecessors, (587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:38:22,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 580 states to 580 states and 587 transitions. [2022-12-13 11:38:22,008 INFO L78 Accepts]: Start accepts. Automaton has 580 states and 587 transitions. Word has length 569 [2022-12-13 11:38:22,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:38:22,009 INFO L495 AbstractCegarLoop]: Abstraction has 580 states and 587 transitions. [2022-12-13 11:38:22,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 283 states, 283 states have (on average 2.0318021201413425) internal successors, (575), 283 states have internal predecessors, (575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:38:22,009 INFO L276 IsEmpty]: Start isEmpty. Operand 580 states and 587 transitions. [2022-12-13 11:38:22,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 580 [2022-12-13 11:38:22,011 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:38:22,011 INFO L195 NwaCegarLoop]: trace histogram [281, 275, 10, 6, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:38:22,015 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2fffc1a-349a-417f-964a-1343f3552231/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2022-12-13 11:38:22,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2fffc1a-349a-417f-964a-1343f3552231/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:38:22,213 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:38:22,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:38:22,214 INFO L85 PathProgramCache]: Analyzing trace with hash -1449652617, now seen corresponding path program 10 times [2022-12-13 11:38:22,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:38:22,215 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651696155] [2022-12-13 11:38:22,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:38:22,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:38:22,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:38:52,609 INFO L134 CoverageAnalysis]: Checked inductivity of 79016 backedges. 3036 proven. 75900 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2022-12-13 11:38:52,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:38:52,610 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651696155] [2022-12-13 11:38:52,610 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1651696155] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:38:52,610 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [205328522] [2022-12-13 11:38:52,610 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-13 11:38:52,610 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:38:52,610 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2fffc1a-349a-417f-964a-1343f3552231/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:38:52,611 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2fffc1a-349a-417f-964a-1343f3552231/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:38:52,612 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2fffc1a-349a-417f-964a-1343f3552231/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-12-13 11:38:52,731 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-13 11:38:52,731 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 11:38:52,738 INFO L263 TraceCheckSpWp]: Trace formula consists of 1226 conjuncts, 277 conjunts are in the unsatisfiable core [2022-12-13 11:38:52,750 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:38:53,251 INFO L134 CoverageAnalysis]: Checked inductivity of 79016 backedges. 3036 proven. 75900 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2022-12-13 11:38:53,251 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:39:48,612 INFO L134 CoverageAnalysis]: Checked inductivity of 79016 backedges. 3036 proven. 75900 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2022-12-13 11:39:48,612 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [205328522] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:39:48,612 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:39:48,612 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [278, 278, 278] total 555 [2022-12-13 11:39:48,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302701079] [2022-12-13 11:39:48,613 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:39:48,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 555 states [2022-12-13 11:39:48,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:39:48,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 555 interpolants. [2022-12-13 11:39:48,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=153735, Invalid=153735, Unknown=0, NotChecked=0, Total=307470 [2022-12-13 11:39:48,645 INFO L87 Difference]: Start difference. First operand 580 states and 587 transitions. Second operand has 555 states, 555 states have (on average 2.0144144144144143) internal successors, (1118), 555 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:39:55,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:39:55,232 INFO L93 Difference]: Finished difference Result 1162 states and 1453 transitions. [2022-12-13 11:39:55,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 554 states. [2022-12-13 11:39:55,233 INFO L78 Accepts]: Start accepts. Automaton has has 555 states, 555 states have (on average 2.0144144144144143) internal successors, (1118), 555 states have internal predecessors, (1118), 0 states have call successors, (0), 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 579 [2022-12-13 11:39:55,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:39:55,236 INFO L225 Difference]: With dead ends: 1162 [2022-12-13 11:39:55,236 INFO L226 Difference]: Without dead ends: 1134 [2022-12-13 11:39:55,248 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1434 GetRequests, 881 SyntacticMatches, 0 SemanticMatches, 553 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1100 ImplicationChecksByTransitivity, 73.1s TimeCoverageRelationStatistics Valid=153735, Invalid=153735, Unknown=0, NotChecked=0, Total=307470 [2022-12-13 11:39:55,249 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 0 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 1122 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 1123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-12-13 11:39:55,249 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 25 Invalid, 1123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1122 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-12-13 11:39:55,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1134 states. [2022-12-13 11:39:55,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1134 to 1134. [2022-12-13 11:39:55,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1134 states, 1133 states have (on average 1.0070609002647837) internal successors, (1141), 1133 states have internal predecessors, (1141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:39:55,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1134 states to 1134 states and 1141 transitions. [2022-12-13 11:39:55,305 INFO L78 Accepts]: Start accepts. Automaton has 1134 states and 1141 transitions. Word has length 579 [2022-12-13 11:39:55,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:39:55,306 INFO L495 AbstractCegarLoop]: Abstraction has 1134 states and 1141 transitions. [2022-12-13 11:39:55,306 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 555 states, 555 states have (on average 2.0144144144144143) internal successors, (1118), 555 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:39:55,307 INFO L276 IsEmpty]: Start isEmpty. Operand 1134 states and 1141 transitions. [2022-12-13 11:39:55,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1134 [2022-12-13 11:39:55,313 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:39:55,313 INFO L195 NwaCegarLoop]: trace histogram [558, 552, 10, 6, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:39:55,318 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2fffc1a-349a-417f-964a-1343f3552231/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-12-13 11:39:55,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2fffc1a-349a-417f-964a-1343f3552231/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-12-13 11:39:55,514 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:39:55,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:39:55,514 INFO L85 PathProgramCache]: Analyzing trace with hash 305904504, now seen corresponding path program 11 times [2022-12-13 11:39:55,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:39:55,514 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989883140] [2022-12-13 11:39:55,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:39:55,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:39:56,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:42:36,543 INFO L134 CoverageAnalysis]: Checked inductivity of 311419 backedges. 6083 proven. 305256 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2022-12-13 11:42:36,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:42:36,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989883140] [2022-12-13 11:42:36,544 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [989883140] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:42:36,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [686467928] [2022-12-13 11:42:36,544 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-13 11:42:36,544 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:42:36,544 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2fffc1a-349a-417f-964a-1343f3552231/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:42:36,545 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2fffc1a-349a-417f-964a-1343f3552231/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:42:36,546 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2fffc1a-349a-417f-964a-1343f3552231/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-12-13 11:42:38,491 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 559 check-sat command(s) [2022-12-13 11:42:38,491 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 11:42:38,512 INFO L263 TraceCheckSpWp]: Trace formula consists of 2334 conjuncts, 554 conjunts are in the unsatisfiable core [2022-12-13 11:42:38,524 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:42:39,424 INFO L134 CoverageAnalysis]: Checked inductivity of 311419 backedges. 6083 proven. 305256 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2022-12-13 11:42:39,424 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:46:21,958 INFO L134 CoverageAnalysis]: Checked inductivity of 311419 backedges. 6083 proven. 305256 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2022-12-13 11:46:21,958 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [686467928] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:46:21,958 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:46:21,958 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [555, 555, 555] total 1109 [2022-12-13 11:46:21,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127370486] [2022-12-13 11:46:21,958 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:46:21,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 1109 states [2022-12-13 11:46:21,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:46:22,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 1109 interpolants. [2022-12-13 11:46:22,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=614386, Invalid=614386, Unknown=0, NotChecked=0, Total=1228772 [2022-12-13 11:46:22,113 INFO L87 Difference]: Start difference. First operand 1134 states and 1141 transitions. Second operand has 1109 states, 1109 states have (on average 2.0072137060414788) internal successors, (2226), 1109 states have internal predecessors, (2226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:47:29,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:47:29,284 INFO L93 Difference]: Finished difference Result 2270 states and 2838 transitions. [2022-12-13 11:47:29,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 1108 states. [2022-12-13 11:47:29,285 INFO L78 Accepts]: Start accepts. Automaton has has 1109 states, 1109 states have (on average 2.0072137060414788) internal successors, (2226), 1109 states have internal predecessors, (2226), 0 states have call successors, (0), 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 1133 [2022-12-13 11:47:29,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:47:29,293 INFO L225 Difference]: With dead ends: 2270 [2022-12-13 11:47:29,293 INFO L226 Difference]: Without dead ends: 2242 [2022-12-13 11:47:29,372 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2819 GetRequests, 1712 SyntacticMatches, 0 SemanticMatches, 1107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2208 ImplicationChecksByTransitivity, 293.3s TimeCoverageRelationStatistics Valid=614386, Invalid=614386, Unknown=0, NotChecked=0, Total=1228772 [2022-12-13 11:47:29,373 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 0 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 2240 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 2241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-12-13 11:47:29,373 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 33 Invalid, 2241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2240 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-12-13 11:47:29,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2242 states. [2022-12-13 11:47:29,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2242 to 2242. [2022-12-13 11:47:29,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2242 states, 2241 states have (on average 1.003569834895136) internal successors, (2249), 2241 states have internal predecessors, (2249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:47:29,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2242 states to 2242 states and 2249 transitions. [2022-12-13 11:47:29,511 INFO L78 Accepts]: Start accepts. Automaton has 2242 states and 2249 transitions. Word has length 1133 [2022-12-13 11:47:29,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:47:29,512 INFO L495 AbstractCegarLoop]: Abstraction has 2242 states and 2249 transitions. [2022-12-13 11:47:29,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 1109 states, 1109 states have (on average 2.0072137060414788) internal successors, (2226), 1109 states have internal predecessors, (2226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:47:29,513 INFO L276 IsEmpty]: Start isEmpty. Operand 2242 states and 2249 transitions. [2022-12-13 11:47:29,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2242 [2022-12-13 11:47:29,535 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:47:29,535 INFO L195 NwaCegarLoop]: trace histogram [1112, 1106, 10, 6, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:47:29,542 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2fffc1a-349a-417f-964a-1343f3552231/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2022-12-13 11:47:29,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2fffc1a-349a-417f-964a-1343f3552231/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-12-13 11:47:29,736 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:47:29,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:47:29,738 INFO L85 PathProgramCache]: Analyzing trace with hash 1124823482, now seen corresponding path program 12 times [2022-12-13 11:47:29,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:47:29,739 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549825268] [2022-12-13 11:47:29,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:47:29,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:47:35,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat