./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-fpi/res2o.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b 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_3feadc2b-a302-44b0-9f33-a7cfb6325222/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3feadc2b-a302-44b0-9f33-a7cfb6325222/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3feadc2b-a302-44b0-9f33-a7cfb6325222/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3feadc2b-a302-44b0-9f33-a7cfb6325222/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-fpi/res2o.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3feadc2b-a302-44b0-9f33-a7cfb6325222/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3feadc2b-a302-44b0-9f33-a7cfb6325222/bin/uautomizer-TMbwUNV5ro --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 c8f420e2027982da4f1bb18a6387f830c2a1e2f24637d0451d3246965ba37a6d --- 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-8393723 [2022-11-18 20:51:55,092 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 20:51:55,094 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 20:51:55,125 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 20:51:55,130 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 20:51:55,132 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 20:51:55,134 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 20:51:55,139 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 20:51:55,142 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 20:51:55,144 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 20:51:55,146 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 20:51:55,148 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 20:51:55,150 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 20:51:55,153 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 20:51:55,155 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 20:51:55,156 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 20:51:55,159 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 20:51:55,164 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 20:51:55,166 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 20:51:55,168 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 20:51:55,171 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 20:51:55,173 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 20:51:55,174 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 20:51:55,175 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 20:51:55,179 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 20:51:55,179 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 20:51:55,179 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 20:51:55,180 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 20:51:55,181 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 20:51:55,182 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 20:51:55,182 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 20:51:55,183 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 20:51:55,184 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 20:51:55,184 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 20:51:55,185 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 20:51:55,192 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 20:51:55,193 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 20:51:55,194 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 20:51:55,194 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 20:51:55,195 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 20:51:55,195 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 20:51:55,196 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3feadc2b-a302-44b0-9f33-a7cfb6325222/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-18 20:51:55,241 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 20:51:55,241 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 20:51:55,242 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 20:51:55,242 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 20:51:55,243 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 20:51:55,243 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 20:51:55,244 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 20:51:55,244 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 20:51:55,244 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 20:51:55,244 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 20:51:55,245 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 20:51:55,246 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 20:51:55,246 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 20:51:55,246 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 20:51:55,246 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 20:51:55,246 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 20:51:55,246 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 20:51:55,247 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 20:51:55,247 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 20:51:55,247 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 20:51:55,247 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 20:51:55,247 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 20:51:55,248 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 20:51:55,248 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 20:51:55,248 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:51:55,248 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 20:51:55,250 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 20:51:55,250 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 20:51:55,250 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 20:51:55,250 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 20:51:55,250 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 20:51:55,251 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 20:51:55,251 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 20:51:55,251 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3feadc2b-a302-44b0-9f33-a7cfb6325222/bin/uautomizer-TMbwUNV5ro/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3feadc2b-a302-44b0-9f33-a7cfb6325222/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c8f420e2027982da4f1bb18a6387f830c2a1e2f24637d0451d3246965ba37a6d [2022-11-18 20:51:55,563 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 20:51:55,594 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 20:51:55,599 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 20:51:55,600 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 20:51:55,601 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 20:51:55,602 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3feadc2b-a302-44b0-9f33-a7cfb6325222/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/array-fpi/res2o.c [2022-11-18 20:51:55,703 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3feadc2b-a302-44b0-9f33-a7cfb6325222/bin/uautomizer-TMbwUNV5ro/data/ad759d67f/00866b5860c848ec9c4a52fd4274f712/FLAG8bd99fb2f [2022-11-18 20:51:56,239 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 20:51:56,240 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3feadc2b-a302-44b0-9f33-a7cfb6325222/sv-benchmarks/c/array-fpi/res2o.c [2022-11-18 20:51:56,247 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3feadc2b-a302-44b0-9f33-a7cfb6325222/bin/uautomizer-TMbwUNV5ro/data/ad759d67f/00866b5860c848ec9c4a52fd4274f712/FLAG8bd99fb2f [2022-11-18 20:51:56,577 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3feadc2b-a302-44b0-9f33-a7cfb6325222/bin/uautomizer-TMbwUNV5ro/data/ad759d67f/00866b5860c848ec9c4a52fd4274f712 [2022-11-18 20:51:56,581 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 20:51:56,585 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 20:51:56,589 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 20:51:56,589 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 20:51:56,593 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 20:51:56,594 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:51:56" (1/1) ... [2022-11-18 20:51:56,595 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c8f1aac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:51:56, skipping insertion in model container [2022-11-18 20:51:56,595 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:51:56" (1/1) ... [2022-11-18 20:51:56,603 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 20:51:56,617 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 20:51:56,842 WARN L234 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_3feadc2b-a302-44b0-9f33-a7cfb6325222/sv-benchmarks/c/array-fpi/res2o.c[588,601] [2022-11-18 20:51:56,865 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:51:56,873 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 20:51:56,887 WARN L234 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_3feadc2b-a302-44b0-9f33-a7cfb6325222/sv-benchmarks/c/array-fpi/res2o.c[588,601] [2022-11-18 20:51:56,898 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:51:56,913 INFO L208 MainTranslator]: Completed translation [2022-11-18 20:51:56,913 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:51:56 WrapperNode [2022-11-18 20:51:56,913 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 20:51:56,914 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 20:51:56,914 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 20:51:56,915 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 20:51:56,925 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:51:56" (1/1) ... [2022-11-18 20:51:56,933 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:51:56" (1/1) ... [2022-11-18 20:51:56,954 INFO L138 Inliner]: procedures = 17, calls = 37, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 121 [2022-11-18 20:51:56,954 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 20:51:56,955 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 20:51:56,955 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 20:51:56,955 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 20:51:56,969 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:51:56" (1/1) ... [2022-11-18 20:51:56,970 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:51:56" (1/1) ... [2022-11-18 20:51:56,972 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:51:56" (1/1) ... [2022-11-18 20:51:56,972 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:51:56" (1/1) ... [2022-11-18 20:51:56,979 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:51:56" (1/1) ... [2022-11-18 20:51:56,984 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:51:56" (1/1) ... [2022-11-18 20:51:56,986 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:51:56" (1/1) ... [2022-11-18 20:51:56,987 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:51:56" (1/1) ... [2022-11-18 20:51:56,989 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 20:51:56,990 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 20:51:56,990 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 20:51:56,990 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 20:51:56,991 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:51:56" (1/1) ... [2022-11-18 20:51:56,998 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:51:57,011 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3feadc2b-a302-44b0-9f33-a7cfb6325222/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:51:57,024 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3feadc2b-a302-44b0-9f33-a7cfb6325222/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 20:51:57,040 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3feadc2b-a302-44b0-9f33-a7cfb6325222/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 20:51:57,082 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 20:51:57,082 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 20:51:57,082 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 20:51:57,082 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 20:51:57,083 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-18 20:51:57,083 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 20:51:57,083 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 20:51:57,085 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-18 20:51:57,086 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 20:51:57,163 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 20:51:57,165 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 20:51:57,492 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 20:51:57,498 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 20:51:57,499 INFO L300 CfgBuilder]: Removed 6 assume(true) statements. [2022-11-18 20:51:57,510 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:51:57 BoogieIcfgContainer [2022-11-18 20:51:57,510 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 20:51:57,512 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 20:51:57,512 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 20:51:57,516 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 20:51:57,516 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 08:51:56" (1/3) ... [2022-11-18 20:51:57,517 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c81535f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:51:57, skipping insertion in model container [2022-11-18 20:51:57,517 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:51:56" (2/3) ... [2022-11-18 20:51:57,518 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c81535f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:51:57, skipping insertion in model container [2022-11-18 20:51:57,518 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:51:57" (3/3) ... [2022-11-18 20:51:57,519 INFO L112 eAbstractionObserver]: Analyzing ICFG res2o.c [2022-11-18 20:51:57,568 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 20:51:57,569 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-18 20:51:57,643 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 20:51:57,653 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;@7ef26907, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 20:51:57,654 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-18 20:51:57,661 INFO L276 IsEmpty]: Start isEmpty. Operand has 30 states, 28 states have (on average 1.5714285714285714) internal successors, (44), 29 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) [2022-11-18 20:51:57,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-18 20:51:57,669 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:51:57,670 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:51:57,673 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:51:57,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:51:57,681 INFO L85 PathProgramCache]: Analyzing trace with hash 1780399656, now seen corresponding path program 1 times [2022-11-18 20:51:57,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:51:57,692 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971690087] [2022-11-18 20:51:57,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:51:57,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:51:57,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:51:57,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:51:57,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:51:57,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971690087] [2022-11-18 20:51:57,916 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [971690087] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:51:57,917 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:51:57,917 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 20:51:57,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655581335] [2022-11-18 20:51:57,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:51:57,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-18 20:51:57,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:51:57,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-18 20:51:57,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-18 20:51:57,956 INFO L87 Difference]: Start difference. First operand has 30 states, 28 states have (on average 1.5714285714285714) internal successors, (44), 29 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) Second operand has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:51:57,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:51:57,981 INFO L93 Difference]: Finished difference Result 56 states and 82 transitions. [2022-11-18 20:51:57,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-18 20:51:57,985 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 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 19 [2022-11-18 20:51:57,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:51:57,994 INFO L225 Difference]: With dead ends: 56 [2022-11-18 20:51:57,994 INFO L226 Difference]: Without dead ends: 26 [2022-11-18 20:51:57,998 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 [2022-11-18 20:51:58,004 INFO L413 NwaCegarLoop]: 36 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, 36 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 [2022-11-18 20:51:58,005 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 20:51:58,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-11-18 20:51:58,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2022-11-18 20:51:58,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 25 states have (on average 1.24) internal successors, (31), 25 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:51:58,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 31 transitions. [2022-11-18 20:51:58,045 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 31 transitions. Word has length 19 [2022-11-18 20:51:58,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:51:58,046 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 31 transitions. [2022-11-18 20:51:58,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:51:58,047 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 31 transitions. [2022-11-18 20:51:58,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-18 20:51:58,048 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:51:58,048 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:51:58,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 20:51:58,049 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:51:58,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:51:58,049 INFO L85 PathProgramCache]: Analyzing trace with hash -1279549768, now seen corresponding path program 1 times [2022-11-18 20:51:58,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:51:58,050 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948185131] [2022-11-18 20:51:58,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:51:58,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:51:58,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:51:58,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:51:58,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:51:58,248 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948185131] [2022-11-18 20:51:58,249 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1948185131] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:51:58,249 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:51:58,249 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 20:51:58,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769964832] [2022-11-18 20:51:58,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:51:58,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:51:58,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:51:58,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:51:58,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:51:58,252 INFO L87 Difference]: Start difference. First operand 26 states and 31 transitions. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:51:58,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:51:58,371 INFO L93 Difference]: Finished difference Result 57 states and 72 transitions. [2022-11-18 20:51:58,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 20:51:58,372 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 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 19 [2022-11-18 20:51:58,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:51:58,373 INFO L225 Difference]: With dead ends: 57 [2022-11-18 20:51:58,373 INFO L226 Difference]: Without dead ends: 38 [2022-11-18 20:51:58,373 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:51:58,375 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 45 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:51:58,376 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 14 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 20:51:58,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2022-11-18 20:51:58,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 32. [2022-11-18 20:51:58,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 31 states have (on average 1.1935483870967742) internal successors, (37), 31 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:51:58,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 37 transitions. [2022-11-18 20:51:58,383 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 37 transitions. Word has length 19 [2022-11-18 20:51:58,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:51:58,384 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 37 transitions. [2022-11-18 20:51:58,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:51:58,384 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 37 transitions. [2022-11-18 20:51:58,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-11-18 20:51:58,385 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:51:58,385 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:51:58,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 20:51:58,389 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:51:58,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:51:58,390 INFO L85 PathProgramCache]: Analyzing trace with hash -1740145276, now seen corresponding path program 1 times [2022-11-18 20:51:58,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:51:58,391 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052732944] [2022-11-18 20:51:58,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:51:58,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:51:58,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:52:01,782 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:52:01,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:52:01,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052732944] [2022-11-18 20:52:01,783 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2052732944] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:52:01,785 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1318157913] [2022-11-18 20:52:01,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:52:01,786 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:52:01,786 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3feadc2b-a302-44b0-9f33-a7cfb6325222/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:52:01,794 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3feadc2b-a302-44b0-9f33-a7cfb6325222/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:52:01,810 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3feadc2b-a302-44b0-9f33-a7cfb6325222/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 20:52:01,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:52:01,899 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 67 conjunts are in the unsatisfiable core [2022-11-18 20:52:01,910 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:52:02,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:52:02,130 INFO L321 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2022-11-18 20:52:02,132 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 45 treesize of output 39 [2022-11-18 20:52:02,195 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-18 20:52:02,310 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2022-11-18 20:52:02,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:52:02,710 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2022-11-18 20:52:03,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:52:03,114 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 38 [2022-11-18 20:52:03,563 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:52:03,566 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 46 [2022-11-18 20:52:04,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:52:04,037 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 46 [2022-11-18 20:52:04,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:52:04,517 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 48 [2022-11-18 20:52:04,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:52:04,908 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 19 [2022-11-18 20:52:04,965 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:52:04,965 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:52:15,218 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:52:15,220 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:52:15,220 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:52:15,222 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:52:15,223 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:52:15,224 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:52:15,365 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 1 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:52:15,365 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1318157913] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:52:15,366 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:52:15,366 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 44 [2022-11-18 20:52:15,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847464468] [2022-11-18 20:52:15,366 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:52:15,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2022-11-18 20:52:15,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:52:15,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2022-11-18 20:52:15,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=298, Invalid=1591, Unknown=3, NotChecked=0, Total=1892 [2022-11-18 20:52:15,371 INFO L87 Difference]: Start difference. First operand 32 states and 37 transitions. Second operand has 44 states, 44 states have (on average 1.9090909090909092) internal successors, (84), 44 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:52:19,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:52:19,952 INFO L93 Difference]: Finished difference Result 71 states and 83 transitions. [2022-11-18 20:52:19,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-18 20:52:19,953 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 1.9090909090909092) internal successors, (84), 44 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2022-11-18 20:52:19,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:52:19,955 INFO L225 Difference]: With dead ends: 71 [2022-11-18 20:52:19,955 INFO L226 Difference]: Without dead ends: 67 [2022-11-18 20:52:19,957 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 45 SyntacticMatches, 11 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1315 ImplicationChecksByTransitivity, 15.5s TimeCoverageRelationStatistics Valid=761, Invalid=3526, Unknown=3, NotChecked=0, Total=4290 [2022-11-18 20:52:19,959 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 171 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 537 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 303 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 20:52:19,959 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [171 Valid, 108 Invalid, 537 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 165 Invalid, 0 Unknown, 303 Unchecked, 0.4s Time] [2022-11-18 20:52:19,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2022-11-18 20:52:19,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 41. [2022-11-18 20:52:19,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 40 states have (on average 1.2) internal successors, (48), 40 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:52:19,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 48 transitions. [2022-11-18 20:52:19,972 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 48 transitions. Word has length 31 [2022-11-18 20:52:19,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:52:19,973 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 48 transitions. [2022-11-18 20:52:19,973 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 1.9090909090909092) internal successors, (84), 44 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:52:19,973 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 48 transitions. [2022-11-18 20:52:19,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-11-18 20:52:19,974 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:52:19,974 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:52:19,981 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3feadc2b-a302-44b0-9f33-a7cfb6325222/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-18 20:52:20,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3feadc2b-a302-44b0-9f33-a7cfb6325222/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:52:20,181 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:52:20,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:52:20,181 INFO L85 PathProgramCache]: Analyzing trace with hash 1839245574, now seen corresponding path program 2 times [2022-11-18 20:52:20,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:52:20,182 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034067958] [2022-11-18 20:52:20,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:52:20,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:52:20,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:52:20,305 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-18 20:52:20,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:52:20,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034067958] [2022-11-18 20:52:20,306 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2034067958] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:52:20,308 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1952905766] [2022-11-18 20:52:20,309 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 20:52:20,309 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:52:20,310 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3feadc2b-a302-44b0-9f33-a7cfb6325222/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:52:20,311 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3feadc2b-a302-44b0-9f33-a7cfb6325222/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:52:20,319 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3feadc2b-a302-44b0-9f33-a7cfb6325222/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-18 20:52:20,413 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 20:52:20,414 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:52:20,415 INFO L263 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-18 20:52:20,420 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:52:20,506 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-18 20:52:20,506 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:52:20,565 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-18 20:52:20,567 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1952905766] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:52:20,567 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:52:20,568 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2022-11-18 20:52:20,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789353033] [2022-11-18 20:52:20,568 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:52:20,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-18 20:52:20,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:52:20,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-18 20:52:20,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2022-11-18 20:52:20,570 INFO L87 Difference]: Start difference. First operand 41 states and 48 transitions. Second operand has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 11 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:52:20,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:52:20,883 INFO L93 Difference]: Finished difference Result 116 states and 136 transitions. [2022-11-18 20:52:20,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 20:52:20,884 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 11 states have internal predecessors, (43), 0 states have call successors, (0), 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 33 [2022-11-18 20:52:20,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:52:20,885 INFO L225 Difference]: With dead ends: 116 [2022-11-18 20:52:20,885 INFO L226 Difference]: Without dead ends: 62 [2022-11-18 20:52:20,886 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 58 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2022-11-18 20:52:20,887 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 88 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 20:52:20,887 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 34 Invalid, 257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 20:52:20,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2022-11-18 20:52:20,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 46. [2022-11-18 20:52:20,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 45 states have (on average 1.1555555555555554) internal successors, (52), 45 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:52:20,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 52 transitions. [2022-11-18 20:52:20,903 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 52 transitions. Word has length 33 [2022-11-18 20:52:20,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:52:20,903 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 52 transitions. [2022-11-18 20:52:20,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 11 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:52:20,904 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 52 transitions. [2022-11-18 20:52:20,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-11-18 20:52:20,905 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:52:20,905 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:52:20,916 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3feadc2b-a302-44b0-9f33-a7cfb6325222/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-18 20:52:21,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3feadc2b-a302-44b0-9f33-a7cfb6325222/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:52:21,111 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:52:21,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:52:21,112 INFO L85 PathProgramCache]: Analyzing trace with hash -284383476, now seen corresponding path program 3 times [2022-11-18 20:52:21,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:52:21,112 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375387829] [2022-11-18 20:52:21,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:52:21,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:52:21,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:52:21,248 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-18 20:52:21,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:52:21,248 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375387829] [2022-11-18 20:52:21,248 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1375387829] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:52:21,249 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1579330321] [2022-11-18 20:52:21,249 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 20:52:21,249 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:52:21,249 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3feadc2b-a302-44b0-9f33-a7cfb6325222/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:52:21,254 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3feadc2b-a302-44b0-9f33-a7cfb6325222/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:52:21,278 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3feadc2b-a302-44b0-9f33-a7cfb6325222/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-18 20:52:21,367 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-18 20:52:21,367 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:52:21,368 INFO L263 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-18 20:52:21,370 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:52:21,452 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-18 20:52:21,452 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:52:21,539 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-18 20:52:21,539 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1579330321] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:52:21,540 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:52:21,540 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2022-11-18 20:52:21,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850457390] [2022-11-18 20:52:21,540 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:52:21,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-18 20:52:21,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:52:21,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-18 20:52:21,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2022-11-18 20:52:21,542 INFO L87 Difference]: Start difference. First operand 46 states and 52 transitions. Second operand has 11 states, 11 states have (on average 5.181818181818182) internal successors, (57), 11 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:52:21,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:52:21,810 INFO L93 Difference]: Finished difference Result 57 states and 63 transitions. [2022-11-18 20:52:21,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 20:52:21,811 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.181818181818182) internal successors, (57), 11 states have internal predecessors, (57), 0 states have call successors, (0), 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 39 [2022-11-18 20:52:21,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:52:21,812 INFO L225 Difference]: With dead ends: 57 [2022-11-18 20:52:21,812 INFO L226 Difference]: Without dead ends: 49 [2022-11-18 20:52:21,812 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 73 SyntacticMatches, 4 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2022-11-18 20:52:21,813 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 45 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 198 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 20:52:21,814 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 36 Invalid, 236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 198 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 20:52:21,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2022-11-18 20:52:21,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 44. [2022-11-18 20:52:21,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 43 states have (on average 1.1395348837209303) internal successors, (49), 43 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) [2022-11-18 20:52:21,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 49 transitions. [2022-11-18 20:52:21,826 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 49 transitions. Word has length 39 [2022-11-18 20:52:21,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:52:21,826 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 49 transitions. [2022-11-18 20:52:21,827 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.181818181818182) internal successors, (57), 11 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:52:21,827 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 49 transitions. [2022-11-18 20:52:21,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-11-18 20:52:21,828 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:52:21,828 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:52:21,839 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3feadc2b-a302-44b0-9f33-a7cfb6325222/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-18 20:52:22,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3feadc2b-a302-44b0-9f33-a7cfb6325222/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:52:22,033 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:52:22,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:52:22,034 INFO L85 PathProgramCache]: Analyzing trace with hash 1410382416, now seen corresponding path program 4 times [2022-11-18 20:52:22,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:52:22,034 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413789883] [2022-11-18 20:52:22,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:52:22,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:52:22,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:52:28,018 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:52:28,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:52:28,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413789883] [2022-11-18 20:52:28,019 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [413789883] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:52:28,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [495919378] [2022-11-18 20:52:28,019 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-18 20:52:28,019 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:52:28,019 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3feadc2b-a302-44b0-9f33-a7cfb6325222/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:52:28,022 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3feadc2b-a302-44b0-9f33-a7cfb6325222/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:52:28,050 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3feadc2b-a302-44b0-9f33-a7cfb6325222/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-18 20:52:28,189 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-18 20:52:28,189 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:52:28,192 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 103 conjunts are in the unsatisfiable core [2022-11-18 20:52:28,200 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:52:28,347 INFO L321 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2022-11-18 20:52:28,347 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 40 treesize of output 34 [2022-11-18 20:52:28,386 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-18 20:52:28,516 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-18 20:52:28,780 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 37 [2022-11-18 20:52:29,565 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 51 [2022-11-18 20:52:30,006 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:52:30,007 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 8 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 61 [2022-11-18 20:52:30,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:52:30,927 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 73 [2022-11-18 20:52:31,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:52:31,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:52:31,448 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 81 [2022-11-18 20:52:32,152 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:52:32,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:52:32,156 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:52:32,162 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 9 disjoint index pairs (out of 28 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 91 treesize of output 88 [2022-11-18 20:52:32,755 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:52:32,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:52:32,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:52:32,762 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 9 disjoint index pairs (out of 28 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 84 treesize of output 82 [2022-11-18 20:52:33,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:52:33,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:52:33,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:52:33,400 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:52:33,404 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 9 disjoint index pairs (out of 28 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 96 treesize of output 88 [2022-11-18 20:52:33,964 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:52:33,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:52:33,967 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 9 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 95 treesize of output 83 [2022-11-18 20:52:34,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:52:34,766 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:52:34,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:52:34,770 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 9 disjoint index pairs (out of 28 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 104 treesize of output 88 [2022-11-18 20:52:35,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:52:35,400 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 8 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 103 treesize of output 83 [2022-11-18 20:52:36,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:52:36,110 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 8 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 91 treesize of output 31 [2022-11-18 20:52:36,216 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 3 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:52:36,216 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:53:21,442 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_346 Int) (v_ArrVal_344 Int) (v_ArrVal_342 Int) (v_ArrVal_341 Int) (v_ArrVal_351 Int) (v_ArrVal_339 Int) (v_ArrVal_349 Int)) (let ((.cse2 (+ |c_ULTIMATE.start_main_~c~0#1.offset| 4))) (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~c~0#1.base| (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~c~0#1.base|) |c_ULTIMATE.start_main_~c~0#1.offset| v_ArrVal_339) .cse2 v_ArrVal_341)))) (let ((.cse1 (select .cse0 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (or (not (<= v_ArrVal_349 (+ v_ArrVal_346 (select (select (store .cse0 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse1 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_346)) |c_ULTIMATE.start_main_~b~0#1.base|) (+ 4 |c_ULTIMATE.start_main_~b~0#1.offset|))))) (not (<= v_ArrVal_351 (+ v_ArrVal_349 (select (select (store .cse0 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse1 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_349)) |c_ULTIMATE.start_main_~c~0#1.base|) |c_ULTIMATE.start_main_~c~0#1.offset|)))) (not (<= v_ArrVal_344 (+ v_ArrVal_342 (select (select (store .cse0 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse1 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_342)) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4))))) (not (<= v_ArrVal_342 (+ (select .cse1 |c_ULTIMATE.start_main_~#sum~0#1.offset|) (select (select .cse0 |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|)))) (not (<= v_ArrVal_341 1)) (not (<= v_ArrVal_346 (+ v_ArrVal_344 (select (select (store .cse0 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse1 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_344)) |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset|)))) (not (<= v_ArrVal_339 1)) (< (+ v_ArrVal_351 (select (select (store .cse0 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse1 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_351)) |c_ULTIMATE.start_main_~c~0#1.base|) .cse2)) (+ (* c_~N~0 3) 1))))))) is different from false [2022-11-18 20:55:07,633 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:55:07,634 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:55:07,634 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:55:07,636 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:55:07,637 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:55:07,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:55:07,641 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:55:07,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:55:07,679 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 23 refuted. 1 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:55:07,680 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [495919378] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:55:07,680 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:55:07,680 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 33, 31] total 92 [2022-11-18 20:55:07,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254861482] [2022-11-18 20:55:07,680 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:55:07,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 92 states [2022-11-18 20:55:07,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:55:07,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2022-11-18 20:55:07,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=903, Invalid=7247, Unknown=44, NotChecked=178, Total=8372 [2022-11-18 20:55:07,684 INFO L87 Difference]: Start difference. First operand 44 states and 49 transitions. Second operand has 92 states, 92 states have (on average 1.2717391304347827) internal successors, (117), 92 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:55:55,427 WARN L233 SmtUtils]: Spent 5.90s on a formula simplification. DAG size of input: 168 DAG size of output: 117 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 20:56:23,473 WARN L233 SmtUtils]: Spent 10.88s on a formula simplification. DAG size of input: 201 DAG size of output: 137 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 20:57:53,543 WARN L233 SmtUtils]: Spent 10.20s on a formula simplification that was a NOOP. DAG size: 205 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 20:58:54,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:58:54,560 INFO L93 Difference]: Finished difference Result 143 states and 166 transitions. [2022-11-18 20:58:54,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2022-11-18 20:58:54,566 INFO L78 Accepts]: Start accepts. Automaton has has 92 states, 92 states have (on average 1.2717391304347827) internal successors, (117), 92 states have internal predecessors, (117), 0 states have call successors, (0), 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 43 [2022-11-18 20:58:54,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:58:54,575 INFO L225 Difference]: With dead ends: 143 [2022-11-18 20:58:54,575 INFO L226 Difference]: Without dead ends: 137 [2022-11-18 20:58:54,579 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 28 SyntacticMatches, 2 SemanticMatches, 140 ConstructedPredicates, 1 IntricatePredicates, 1 DeprecatedPredicates, 6531 ImplicationChecksByTransitivity, 380.6s TimeCoverageRelationStatistics Valid=2176, Invalid=17465, Unknown=103, NotChecked=278, Total=20022 [2022-11-18 20:58:54,580 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 154 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 251 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 194 SdHoareTripleChecker+Invalid, 1710 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1403 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 20:58:54,580 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [154 Valid, 194 Invalid, 1710 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 251 Invalid, 0 Unknown, 1403 Unchecked, 0.4s Time] [2022-11-18 20:58:54,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2022-11-18 20:58:54,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 87. [2022-11-18 20:58:54,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 86 states have (on average 1.186046511627907) internal successors, (102), 86 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:58:54,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 102 transitions. [2022-11-18 20:58:54,610 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 102 transitions. Word has length 43 [2022-11-18 20:58:54,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:58:54,610 INFO L495 AbstractCegarLoop]: Abstraction has 87 states and 102 transitions. [2022-11-18 20:58:54,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 92 states, 92 states have (on average 1.2717391304347827) internal successors, (117), 92 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:58:54,611 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 102 transitions. [2022-11-18 20:58:54,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-11-18 20:58:54,612 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:58:54,612 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:58:54,618 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3feadc2b-a302-44b0-9f33-a7cfb6325222/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-18 20:58:54,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3feadc2b-a302-44b0-9f33-a7cfb6325222/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-18 20:58:54,814 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:58:54,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:58:54,815 INFO L85 PathProgramCache]: Analyzing trace with hash -313453870, now seen corresponding path program 5 times [2022-11-18 20:58:54,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:58:54,815 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718164009] [2022-11-18 20:58:54,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:58:54,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:58:54,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:58:55,012 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-18 20:58:55,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:58:55,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718164009] [2022-11-18 20:58:55,012 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [718164009] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:58:55,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [170161080] [2022-11-18 20:58:55,012 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-18 20:58:55,013 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:58:55,013 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3feadc2b-a302-44b0-9f33-a7cfb6325222/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:58:55,014 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3feadc2b-a302-44b0-9f33-a7cfb6325222/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:58:55,034 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3feadc2b-a302-44b0-9f33-a7cfb6325222/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-18 20:58:55,258 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-11-18 20:58:55,258 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:58:55,260 INFO L263 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-18 20:58:55,262 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:58:55,409 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-18 20:58:55,409 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:58:55,549 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-18 20:58:55,549 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [170161080] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:58:55,549 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:58:55,549 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2022-11-18 20:58:55,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2266537] [2022-11-18 20:58:55,549 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:58:55,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-18 20:58:55,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:58:55,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-18 20:58:55,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=274, Unknown=0, NotChecked=0, Total=342 [2022-11-18 20:58:55,551 INFO L87 Difference]: Start difference. First operand 87 states and 102 transitions. Second operand has 19 states, 19 states have (on average 3.6315789473684212) internal successors, (69), 19 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:58:56,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:58:56,408 INFO L93 Difference]: Finished difference Result 155 states and 181 transitions. [2022-11-18 20:58:56,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-18 20:58:56,409 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.6315789473684212) internal successors, (69), 19 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2022-11-18 20:58:56,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:58:56,409 INFO L225 Difference]: With dead ends: 155 [2022-11-18 20:58:56,410 INFO L226 Difference]: Without dead ends: 62 [2022-11-18 20:58:56,410 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 86 SyntacticMatches, 4 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 288 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=198, Invalid=858, Unknown=0, NotChecked=0, Total=1056 [2022-11-18 20:58:56,411 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 216 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 548 mSolverCounterSat, 193 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 741 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 193 IncrementalHoareTripleChecker+Valid, 548 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-18 20:58:56,411 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [216 Valid, 46 Invalid, 741 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [193 Valid, 548 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-18 20:58:56,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2022-11-18 20:58:56,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 56. [2022-11-18 20:58:56,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 55 states have (on average 1.1090909090909091) internal successors, (61), 55 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:58:56,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 61 transitions. [2022-11-18 20:58:56,437 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 61 transitions. Word has length 45 [2022-11-18 20:58:56,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:58:56,437 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 61 transitions. [2022-11-18 20:58:56,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.6315789473684212) internal successors, (69), 19 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:58:56,437 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 61 transitions. [2022-11-18 20:58:56,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-11-18 20:58:56,439 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:58:56,439 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:58:56,451 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3feadc2b-a302-44b0-9f33-a7cfb6325222/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-18 20:58:56,646 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3feadc2b-a302-44b0-9f33-a7cfb6325222/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:58:56,646 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:58:56,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:58:56,647 INFO L85 PathProgramCache]: Analyzing trace with hash -1101638372, now seen corresponding path program 6 times [2022-11-18 20:58:56,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:58:56,647 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503096628] [2022-11-18 20:58:56,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:58:56,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:58:56,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:59:06,109 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:59:06,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:59:06,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503096628] [2022-11-18 20:59:06,109 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1503096628] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:59:06,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1196548724] [2022-11-18 20:59:06,110 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-18 20:59:06,110 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:59:06,110 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3feadc2b-a302-44b0-9f33-a7cfb6325222/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:59:06,112 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3feadc2b-a302-44b0-9f33-a7cfb6325222/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:59:06,120 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3feadc2b-a302-44b0-9f33-a7cfb6325222/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-18 20:59:06,359 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-11-18 20:59:06,360 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:59:06,364 WARN L261 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 132 conjunts are in the unsatisfiable core [2022-11-18 20:59:06,380 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:59:06,575 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-18 20:59:06,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:59:06,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:59:06,605 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-18 20:59:06,605 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 28 [2022-11-18 20:59:06,798 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:59:06,799 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-18 20:59:07,158 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:59:07,159 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 37 [2022-11-18 20:59:07,609 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:59:07,610 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 52 [2022-11-18 20:59:08,500 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:59:08,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:59:08,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:59:08,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:59:08,508 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 8 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 52 [2022-11-18 20:59:08,781 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:59:08,783 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:59:08,784 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:59:08,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:59:08,803 INFO L321 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2022-11-18 20:59:08,803 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 1 case distinctions, treesize of input 55 treesize of output 72 [2022-11-18 20:59:09,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:59:09,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:59:09,368 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:59:09,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:59:09,392 INFO L321 Elim1Store]: treesize reduction 25, result has 34.2 percent of original size [2022-11-18 20:59:09,393 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 2 case distinctions, treesize of input 67 treesize of output 87 [2022-11-18 20:59:10,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:59:10,580 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:59:10,582 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:59:10,583 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:59:10,584 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:59:10,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:59:10,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:59:10,588 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 12 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 78 treesize of output 95 [2022-11-18 20:59:11,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:59:11,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:59:11,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:59:11,249 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:59:11,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:59:11,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:59:11,253 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:59:11,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:59:11,256 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 13 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 105 [2022-11-18 20:59:11,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:59:11,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:59:11,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:59:11,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:59:11,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:59:11,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:59:11,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:59:11,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:59:11,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:59:11,993 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 15 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 92 treesize of output 115 [2022-11-18 20:59:12,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:59:12,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:59:12,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:59:12,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:59:12,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:59:12,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:59:12,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:59:12,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:59:12,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:59:12,914 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 15 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 0 case distinctions, treesize of input 112 treesize of output 123 [2022-11-18 20:59:13,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:59:13,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:59:13,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:59:13,416 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:59:13,417 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:59:13,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:59:13,420 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:59:13,421 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:59:13,422 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:59:13,428 INFO L321 Elim1Store]: treesize reduction 30, result has 3.2 percent of original size [2022-11-18 20:59:13,429 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 15 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 3 case distinctions, treesize of input 120 treesize of output 134 [2022-11-18 20:59:14,194 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:59:14,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:59:14,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:59:14,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:59:14,202 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:59:14,205 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:59:14,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:59:14,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:59:14,220 INFO L321 Elim1Store]: treesize reduction 50, result has 2.0 percent of original size [2022-11-18 20:59:14,220 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 17 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 5 case distinctions, treesize of input 124 treesize of output 141 [2022-11-18 20:59:15,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:59:15,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:59:15,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:59:15,816 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:59:15,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:59:15,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:59:15,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:59:15,824 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:59:15,825 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:59:15,827 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:59:15,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:59:15,829 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:59:15,830 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:59:15,832 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:59:15,834 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 13 select indices, 13 select index equivalence classes, 15 disjoint index pairs (out of 78 index pairs), introduced 10 new quantified variables, introduced 0 case distinctions, treesize of input 133 treesize of output 132 [2022-11-18 20:59:16,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:59:16,713 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:59:16,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:59:16,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:59:16,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:59:16,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:59:16,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:59:16,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:59:16,721 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:59:16,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:59:16,724 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 15 disjoint index pairs (out of 55 index pairs), introduced 10 new quantified variables, introduced 0 case distinctions, treesize of input 154 treesize of output 134 [2022-11-18 20:59:17,623 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:59:17,624 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:59:17,625 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:59:17,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:59:17,628 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:59:17,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:59:17,631 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:59:17,632 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:59:17,633 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:59:17,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:59:17,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:59:17,637 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 15 disjoint index pairs (out of 55 index pairs), introduced 10 new quantified variables, introduced 0 case distinctions, treesize of input 148 treesize of output 127 [2022-11-18 20:59:19,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:59:19,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:59:19,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:59:19,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:59:19,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:59:19,563 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:59:19,564 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:59:19,565 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:59:19,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:59:19,569 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 15 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 0 case distinctions, treesize of input 153 treesize of output 128 [2022-11-18 20:59:20,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:59:20,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:59:20,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:59:20,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:59:20,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:59:20,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:59:20,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:59:20,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:59:20,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:59:20,454 INFO L321 Elim1Store]: treesize reduction 30, result has 3.2 percent of original size [2022-11-18 20:59:20,455 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 15 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 3 case distinctions, treesize of input 158 treesize of output 140 [2022-11-18 20:59:21,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:59:21,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:59:21,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:59:21,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:59:21,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:59:21,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:59:21,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:59:21,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:59:21,538 INFO L321 Elim1Store]: treesize reduction 50, result has 2.0 percent of original size [2022-11-18 20:59:21,539 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 17 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 5 case distinctions, treesize of input 161 treesize of output 146 [2022-11-18 20:59:27,238 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:59:27,239 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:59:27,241 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:59:27,242 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:59:27,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:59:27,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:59:27,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:59:27,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:59:27,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:59:27,249 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:59:27,253 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:59:27,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:59:27,258 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 12 select indices, 12 select index equivalence classes, 15 disjoint index pairs (out of 66 index pairs), introduced 10 new quantified variables, introduced 0 case distinctions, treesize of input 149 treesize of output 43 [2022-11-18 20:59:27,419 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 5 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:59:27,419 INFO L328 TraceCheckSpWp]: Computing backward predicates...