./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-multidimensional/rev-2-n-u.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1f44a51-ba58-4161-8eef-def23d74eff0/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1f44a51-ba58-4161-8eef-def23d74eff0/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1f44a51-ba58-4161-8eef-def23d74eff0/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1f44a51-ba58-4161-8eef-def23d74eff0/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-multidimensional/rev-2-n-u.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1f44a51-ba58-4161-8eef-def23d74eff0/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1f44a51-ba58-4161-8eef-def23d74eff0/bin/uautomizer-tPACEb0tL8 --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 bf03248da0b4b82491822f692d5527664b721dbcd28594bdb518a5eab7d5a1f3 --- 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-e04fb08 [2022-11-16 11:54:10,134 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 11:54:10,140 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 11:54:10,168 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 11:54:10,168 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 11:54:10,173 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 11:54:10,176 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 11:54:10,180 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 11:54:10,182 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 11:54:10,189 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 11:54:10,191 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 11:54:10,192 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 11:54:10,193 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 11:54:10,196 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 11:54:10,197 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 11:54:10,199 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 11:54:10,201 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 11:54:10,201 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 11:54:10,203 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 11:54:10,209 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 11:54:10,214 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 11:54:10,215 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 11:54:10,216 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 11:54:10,218 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 11:54:10,223 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 11:54:10,224 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 11:54:10,224 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 11:54:10,226 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 11:54:10,226 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 11:54:10,227 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 11:54:10,228 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 11:54:10,229 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 11:54:10,230 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 11:54:10,232 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 11:54:10,233 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 11:54:10,234 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 11:54:10,234 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 11:54:10,235 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 11:54:10,235 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 11:54:10,236 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 11:54:10,236 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 11:54:10,237 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1f44a51-ba58-4161-8eef-def23d74eff0/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-16 11:54:10,285 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 11:54:10,286 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 11:54:10,286 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 11:54:10,287 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 11:54:10,287 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 11:54:10,288 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 11:54:10,288 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 11:54:10,288 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 11:54:10,289 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 11:54:10,289 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 11:54:10,290 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 11:54:10,290 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 11:54:10,290 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 11:54:10,291 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 11:54:10,291 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 11:54:10,291 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 11:54:10,291 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 11:54:10,291 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 11:54:10,292 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 11:54:10,292 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 11:54:10,292 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 11:54:10,292 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 11:54:10,292 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 11:54:10,293 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 11:54:10,293 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:54:10,293 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 11:54:10,295 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 11:54:10,295 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 11:54:10,295 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 11:54:10,295 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 11:54:10,296 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 11:54:10,296 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 11:54:10,296 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 11:54:10,296 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_f1f44a51-ba58-4161-8eef-def23d74eff0/bin/uautomizer-tPACEb0tL8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1f44a51-ba58-4161-8eef-def23d74eff0/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bf03248da0b4b82491822f692d5527664b721dbcd28594bdb518a5eab7d5a1f3 [2022-11-16 11:54:10,576 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 11:54:10,595 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 11:54:10,597 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 11:54:10,599 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 11:54:10,599 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 11:54:10,600 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1f44a51-ba58-4161-8eef-def23d74eff0/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/array-multidimensional/rev-2-n-u.c [2022-11-16 11:54:10,662 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1f44a51-ba58-4161-8eef-def23d74eff0/bin/uautomizer-tPACEb0tL8/data/a396dc457/adeac71f41d4416887623fcb27d88047/FLAG1a574be9d [2022-11-16 11:54:11,129 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 11:54:11,131 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1f44a51-ba58-4161-8eef-def23d74eff0/sv-benchmarks/c/array-multidimensional/rev-2-n-u.c [2022-11-16 11:54:11,137 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1f44a51-ba58-4161-8eef-def23d74eff0/bin/uautomizer-tPACEb0tL8/data/a396dc457/adeac71f41d4416887623fcb27d88047/FLAG1a574be9d [2022-11-16 11:54:11,498 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1f44a51-ba58-4161-8eef-def23d74eff0/bin/uautomizer-tPACEb0tL8/data/a396dc457/adeac71f41d4416887623fcb27d88047 [2022-11-16 11:54:11,501 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 11:54:11,503 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 11:54:11,504 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 11:54:11,504 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 11:54:11,508 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 11:54:11,509 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:54:11" (1/1) ... [2022-11-16 11:54:11,510 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@484e6d26 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:54:11, skipping insertion in model container [2022-11-16 11:54:11,510 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:54:11" (1/1) ... [2022-11-16 11:54:11,518 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 11:54:11,535 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 11:54:11,720 WARN L229 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_f1f44a51-ba58-4161-8eef-def23d74eff0/sv-benchmarks/c/array-multidimensional/rev-2-n-u.c[321,334] [2022-11-16 11:54:11,738 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:54:11,745 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 11:54:11,757 WARN L229 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_f1f44a51-ba58-4161-8eef-def23d74eff0/sv-benchmarks/c/array-multidimensional/rev-2-n-u.c[321,334] [2022-11-16 11:54:11,765 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:54:11,778 INFO L208 MainTranslator]: Completed translation [2022-11-16 11:54:11,779 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:54:11 WrapperNode [2022-11-16 11:54:11,779 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 11:54:11,780 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 11:54:11,780 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 11:54:11,780 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 11:54:11,788 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:54:11" (1/1) ... [2022-11-16 11:54:11,794 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:54:11" (1/1) ... [2022-11-16 11:54:11,812 INFO L138 Inliner]: procedures = 14, calls = 19, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 83 [2022-11-16 11:54:11,812 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 11:54:11,813 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 11:54:11,813 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 11:54:11,813 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 11:54:11,821 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:54:11" (1/1) ... [2022-11-16 11:54:11,822 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:54:11" (1/1) ... [2022-11-16 11:54:11,824 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:54:11" (1/1) ... [2022-11-16 11:54:11,824 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:54:11" (1/1) ... [2022-11-16 11:54:11,829 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:54:11" (1/1) ... [2022-11-16 11:54:11,833 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:54:11" (1/1) ... [2022-11-16 11:54:11,834 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:54:11" (1/1) ... [2022-11-16 11:54:11,835 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:54:11" (1/1) ... [2022-11-16 11:54:11,837 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 11:54:11,838 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 11:54:11,838 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 11:54:11,838 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 11:54:11,839 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:54:11" (1/1) ... [2022-11-16 11:54:11,845 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:54:11,857 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1f44a51-ba58-4161-8eef-def23d74eff0/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:54:11,870 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1f44a51-ba58-4161-8eef-def23d74eff0/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 11:54:11,895 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1f44a51-ba58-4161-8eef-def23d74eff0/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 11:54:11,914 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 11:54:11,914 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 11:54:11,914 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 11:54:11,914 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 11:54:11,915 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 11:54:11,915 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 11:54:11,915 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 11:54:11,915 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 11:54:11,991 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 11:54:11,993 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 11:54:12,237 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 11:54:12,247 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 11:54:12,248 INFO L300 CfgBuilder]: Removed 6 assume(true) statements. [2022-11-16 11:54:12,251 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:54:12 BoogieIcfgContainer [2022-11-16 11:54:12,251 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 11:54:12,254 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 11:54:12,256 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 11:54:12,260 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 11:54:12,260 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 11:54:11" (1/3) ... [2022-11-16 11:54:12,261 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ba1c45f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:54:12, skipping insertion in model container [2022-11-16 11:54:12,261 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:54:11" (2/3) ... [2022-11-16 11:54:12,262 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ba1c45f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:54:12, skipping insertion in model container [2022-11-16 11:54:12,262 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:54:12" (3/3) ... [2022-11-16 11:54:12,268 INFO L112 eAbstractionObserver]: Analyzing ICFG rev-2-n-u.c [2022-11-16 11:54:12,287 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 11:54:12,287 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-16 11:54:12,358 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 11:54:12,372 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;@1f40c79d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 11:54:12,372 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-16 11:54:12,379 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 19 states have (on average 1.736842105263158) internal successors, (33), 20 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:54:12,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-16 11:54:12,385 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:54:12,386 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:54:12,389 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:54:12,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:54:12,396 INFO L85 PathProgramCache]: Analyzing trace with hash 1817636276, now seen corresponding path program 1 times [2022-11-16 11:54:12,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:54:12,407 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338440981] [2022-11-16 11:54:12,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:54:12,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:54:12,537 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:54:12,538 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [851195392] [2022-11-16 11:54:12,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:54:12,539 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:54:12,539 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1f44a51-ba58-4161-8eef-def23d74eff0/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:54:12,547 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1f44a51-ba58-4161-8eef-def23d74eff0/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:54:12,571 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1f44a51-ba58-4161-8eef-def23d74eff0/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 11:54:12,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:54:12,644 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 11:54:12,649 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:54:12,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:54:12,714 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:54:12,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:54:12,714 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338440981] [2022-11-16 11:54:12,715 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:54:12,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [851195392] [2022-11-16 11:54:12,716 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [851195392] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:54:12,716 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:54:12,716 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:54:12,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70725385] [2022-11-16 11:54:12,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:54:12,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:54:12,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:54:12,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:54:12,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:54:12,773 INFO L87 Difference]: Start difference. First operand has 21 states, 19 states have (on average 1.736842105263158) internal successors, (33), 20 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:54:12,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:54:12,869 INFO L93 Difference]: Finished difference Result 43 states and 71 transitions. [2022-11-16 11:54:12,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:54:12,871 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-11-16 11:54:12,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:54:12,879 INFO L225 Difference]: With dead ends: 43 [2022-11-16 11:54:12,879 INFO L226 Difference]: Without dead ends: 20 [2022-11-16 11:54:12,882 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:54:12,889 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 3 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:54:12,890 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 34 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 11:54:12,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2022-11-16 11:54:12,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 18. [2022-11-16 11:54:12,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 17 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:54:12,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 23 transitions. [2022-11-16 11:54:12,928 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 23 transitions. Word has length 10 [2022-11-16 11:54:12,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:54:12,928 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 23 transitions. [2022-11-16 11:54:12,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:54:12,930 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 23 transitions. [2022-11-16 11:54:12,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-16 11:54:12,930 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:54:12,931 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:54:12,940 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1f44a51-ba58-4161-8eef-def23d74eff0/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-16 11:54:13,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1f44a51-ba58-4161-8eef-def23d74eff0/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-11-16 11:54:13,136 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:54:13,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:54:13,137 INFO L85 PathProgramCache]: Analyzing trace with hash 429030367, now seen corresponding path program 1 times [2022-11-16 11:54:13,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:54:13,137 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063302179] [2022-11-16 11:54:13,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:54:13,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:54:13,152 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:54:13,163 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1451564535] [2022-11-16 11:54:13,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:54:13,164 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:54:13,164 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1f44a51-ba58-4161-8eef-def23d74eff0/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:54:13,166 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1f44a51-ba58-4161-8eef-def23d74eff0/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:54:13,187 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1f44a51-ba58-4161-8eef-def23d74eff0/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-16 11:54:13,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:54:13,259 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 11:54:13,260 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:54:13,299 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:54:13,306 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:54:13,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:54:13,307 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063302179] [2022-11-16 11:54:13,307 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:54:13,307 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1451564535] [2022-11-16 11:54:13,307 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1451564535] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:54:13,308 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:54:13,308 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 11:54:13,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723070036] [2022-11-16 11:54:13,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:54:13,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:54:13,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:54:13,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:54:13,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:54:13,310 INFO L87 Difference]: Start difference. First operand 18 states and 23 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:54:13,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:54:13,366 INFO L93 Difference]: Finished difference Result 43 states and 57 transitions. [2022-11-16 11:54:13,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:54:13,367 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-16 11:54:13,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:54:13,368 INFO L225 Difference]: With dead ends: 43 [2022-11-16 11:54:13,368 INFO L226 Difference]: Without dead ends: 28 [2022-11-16 11:54:13,369 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:54:13,370 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 37 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:54:13,371 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 24 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 11:54:13,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2022-11-16 11:54:13,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 21. [2022-11-16 11:54:13,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 20 states have (on average 1.3) internal successors, (26), 20 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:54:13,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 26 transitions. [2022-11-16 11:54:13,376 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 26 transitions. Word has length 13 [2022-11-16 11:54:13,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:54:13,377 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 26 transitions. [2022-11-16 11:54:13,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:54:13,377 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 26 transitions. [2022-11-16 11:54:13,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-16 11:54:13,378 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:54:13,378 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:54:13,395 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1f44a51-ba58-4161-8eef-def23d74eff0/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-16 11:54:13,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1f44a51-ba58-4161-8eef-def23d74eff0/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:54:13,583 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:54:13,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:54:13,584 INFO L85 PathProgramCache]: Analyzing trace with hash -270581085, now seen corresponding path program 1 times [2022-11-16 11:54:13,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:54:13,584 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956155245] [2022-11-16 11:54:13,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:54:13,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:54:13,599 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:54:13,599 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [660174240] [2022-11-16 11:54:13,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:54:13,600 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:54:13,600 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1f44a51-ba58-4161-8eef-def23d74eff0/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:54:13,601 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1f44a51-ba58-4161-8eef-def23d74eff0/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:54:13,607 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1f44a51-ba58-4161-8eef-def23d74eff0/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-16 11:54:13,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:54:13,672 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 11:54:13,675 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:54:13,741 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:54:13,742 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:54:13,802 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:54:13,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:54:13,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [956155245] [2022-11-16 11:54:13,803 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:54:13,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [660174240] [2022-11-16 11:54:13,803 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [660174240] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:54:13,803 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:54:13,804 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-11-16 11:54:13,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753942594] [2022-11-16 11:54:13,804 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:54:13,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 11:54:13,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:54:13,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 11:54:13,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-11-16 11:54:13,807 INFO L87 Difference]: Start difference. First operand 21 states and 26 transitions. Second operand has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:54:13,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:54:13,904 INFO L93 Difference]: Finished difference Result 63 states and 83 transitions. [2022-11-16 11:54:13,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 11:54:13,905 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-11-16 11:54:13,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:54:13,906 INFO L225 Difference]: With dead ends: 63 [2022-11-16 11:54:13,906 INFO L226 Difference]: Without dead ends: 45 [2022-11-16 11:54:13,906 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=50, Unknown=0, NotChecked=0, Total=90 [2022-11-16 11:54:13,907 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 99 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:54:13,908 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 37 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 11:54:13,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2022-11-16 11:54:13,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 36. [2022-11-16 11:54:13,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 35 states have (on average 1.2571428571428571) internal successors, (44), 35 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) [2022-11-16 11:54:13,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 44 transitions. [2022-11-16 11:54:13,917 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 44 transitions. Word has length 14 [2022-11-16 11:54:13,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:54:13,917 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 44 transitions. [2022-11-16 11:54:13,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:54:13,918 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 44 transitions. [2022-11-16 11:54:13,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-16 11:54:13,918 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:54:13,919 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:54:13,934 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1f44a51-ba58-4161-8eef-def23d74eff0/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-16 11:54:14,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1f44a51-ba58-4161-8eef-def23d74eff0/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:54:14,128 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:54:14,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:54:14,129 INFO L85 PathProgramCache]: Analyzing trace with hash -1443885857, now seen corresponding path program 2 times [2022-11-16 11:54:14,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:54:14,129 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330594548] [2022-11-16 11:54:14,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:54:14,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:54:14,141 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:54:14,143 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1872612317] [2022-11-16 11:54:14,144 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 11:54:14,144 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:54:14,144 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1f44a51-ba58-4161-8eef-def23d74eff0/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:54:14,145 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1f44a51-ba58-4161-8eef-def23d74eff0/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:54:14,159 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1f44a51-ba58-4161-8eef-def23d74eff0/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-16 11:54:14,209 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-16 11:54:14,209 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:54:14,210 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 11:54:14,211 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:54:14,242 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-16 11:54:14,242 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:54:14,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:54:14,243 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330594548] [2022-11-16 11:54:14,243 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:54:14,243 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1872612317] [2022-11-16 11:54:14,243 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1872612317] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:54:14,243 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:54:14,244 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 11:54:14,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234752205] [2022-11-16 11:54:14,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:54:14,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:54:14,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:54:14,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:54:14,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:54:14,246 INFO L87 Difference]: Start difference. First operand 36 states and 44 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:54:14,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:54:14,288 INFO L93 Difference]: Finished difference Result 84 states and 103 transitions. [2022-11-16 11:54:14,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:54:14,288 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-11-16 11:54:14,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:54:14,290 INFO L225 Difference]: With dead ends: 84 [2022-11-16 11:54:14,291 INFO L226 Difference]: Without dead ends: 66 [2022-11-16 11:54:14,291 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:54:14,292 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 29 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:54:14,293 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 20 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 11:54:14,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2022-11-16 11:54:14,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 37. [2022-11-16 11:54:14,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 36 states have (on average 1.25) internal successors, (45), 36 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:54:14,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 45 transitions. [2022-11-16 11:54:14,303 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 45 transitions. Word has length 17 [2022-11-16 11:54:14,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:54:14,304 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 45 transitions. [2022-11-16 11:54:14,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:54:14,304 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 45 transitions. [2022-11-16 11:54:14,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-16 11:54:14,305 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:54:14,305 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:54:14,315 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1f44a51-ba58-4161-8eef-def23d74eff0/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-16 11:54:14,510 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1f44a51-ba58-4161-8eef-def23d74eff0/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:54:14,510 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:54:14,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:54:14,511 INFO L85 PathProgramCache]: Analyzing trace with hash -1541106392, now seen corresponding path program 1 times [2022-11-16 11:54:14,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:54:14,511 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636177496] [2022-11-16 11:54:14,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:54:14,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:54:14,529 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:54:14,529 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1864156603] [2022-11-16 11:54:14,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:54:14,530 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:54:14,530 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1f44a51-ba58-4161-8eef-def23d74eff0/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:54:14,531 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1f44a51-ba58-4161-8eef-def23d74eff0/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:54:14,551 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1f44a51-ba58-4161-8eef-def23d74eff0/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-16 11:54:14,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:54:14,612 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-16 11:54:14,614 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:54:14,687 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-16 11:54:14,687 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:54:14,767 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-16 11:54:14,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:54:14,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636177496] [2022-11-16 11:54:14,768 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:54:14,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1864156603] [2022-11-16 11:54:14,768 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1864156603] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:54:14,768 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:54:14,768 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2022-11-16 11:54:14,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793708538] [2022-11-16 11:54:14,768 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:54:14,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-16 11:54:14,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:54:14,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-16 11:54:14,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2022-11-16 11:54:14,770 INFO L87 Difference]: Start difference. First operand 37 states and 45 transitions. Second operand has 14 states, 14 states have (on average 2.0) internal successors, (28), 14 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:54:15,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:54:15,031 INFO L93 Difference]: Finished difference Result 120 states and 151 transitions. [2022-11-16 11:54:15,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-16 11:54:15,031 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.0) internal successors, (28), 14 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-11-16 11:54:15,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:54:15,032 INFO L225 Difference]: With dead ends: 120 [2022-11-16 11:54:15,032 INFO L226 Difference]: Without dead ends: 86 [2022-11-16 11:54:15,033 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=151, Invalid=191, Unknown=0, NotChecked=0, Total=342 [2022-11-16 11:54:15,034 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 234 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 234 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:54:15,034 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [234 Valid, 60 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 11:54:15,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2022-11-16 11:54:15,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 67. [2022-11-16 11:54:15,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 66 states have (on average 1.2272727272727273) internal successors, (81), 66 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:54:15,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 81 transitions. [2022-11-16 11:54:15,061 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 81 transitions. Word has length 24 [2022-11-16 11:54:15,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:54:15,061 INFO L495 AbstractCegarLoop]: Abstraction has 67 states and 81 transitions. [2022-11-16 11:54:15,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.0) internal successors, (28), 14 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:54:15,062 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 81 transitions. [2022-11-16 11:54:15,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-16 11:54:15,063 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:54:15,063 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:54:15,072 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1f44a51-ba58-4161-8eef-def23d74eff0/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-16 11:54:15,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1f44a51-ba58-4161-8eef-def23d74eff0/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:54:15,268 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:54:15,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:54:15,269 INFO L85 PathProgramCache]: Analyzing trace with hash -1220021784, now seen corresponding path program 2 times [2022-11-16 11:54:15,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:54:15,269 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027920073] [2022-11-16 11:54:15,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:54:15,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:54:15,293 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:54:15,293 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2017123568] [2022-11-16 11:54:15,293 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 11:54:15,293 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:54:15,293 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1f44a51-ba58-4161-8eef-def23d74eff0/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:54:15,294 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1f44a51-ba58-4161-8eef-def23d74eff0/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:54:15,310 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1f44a51-ba58-4161-8eef-def23d74eff0/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-16 11:54:15,417 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 11:54:15,418 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:54:15,420 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-16 11:54:15,422 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:54:15,627 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 1 proven. 55 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2022-11-16 11:54:15,627 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:54:15,850 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 1 proven. 55 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2022-11-16 11:54:15,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:54:15,851 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027920073] [2022-11-16 11:54:15,851 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:54:15,851 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2017123568] [2022-11-16 11:54:15,851 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2017123568] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:54:15,852 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:54:15,852 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 26 [2022-11-16 11:54:15,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877202201] [2022-11-16 11:54:15,852 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:54:15,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-16 11:54:15,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:54:15,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-16 11:54:15,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=303, Invalid=347, Unknown=0, NotChecked=0, Total=650 [2022-11-16 11:54:15,854 INFO L87 Difference]: Start difference. First operand 67 states and 81 transitions. Second operand has 26 states, 26 states have (on average 1.5384615384615385) internal successors, (40), 26 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:54:16,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:54:16,549 INFO L93 Difference]: Finished difference Result 234 states and 289 transitions. [2022-11-16 11:54:16,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-11-16 11:54:16,550 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 1.5384615384615385) internal successors, (40), 26 states have internal predecessors, (40), 0 states have call successors, (0), 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 36 [2022-11-16 11:54:16,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:54:16,555 INFO L225 Difference]: With dead ends: 234 [2022-11-16 11:54:16,555 INFO L226 Difference]: Without dead ends: 170 [2022-11-16 11:54:16,557 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 253 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=589, Invalid=743, Unknown=0, NotChecked=0, Total=1332 [2022-11-16 11:54:16,559 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 472 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 182 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 472 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 182 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-16 11:54:16,560 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [472 Valid, 109 Invalid, 291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [182 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-16 11:54:16,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2022-11-16 11:54:16,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 127. [2022-11-16 11:54:16,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 126 states have (on average 1.2142857142857142) internal successors, (153), 126 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:54:16,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 153 transitions. [2022-11-16 11:54:16,609 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 153 transitions. Word has length 36 [2022-11-16 11:54:16,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:54:16,612 INFO L495 AbstractCegarLoop]: Abstraction has 127 states and 153 transitions. [2022-11-16 11:54:16,613 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 1.5384615384615385) internal successors, (40), 26 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:54:16,613 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 153 transitions. [2022-11-16 11:54:16,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-11-16 11:54:16,616 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:54:16,617 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:54:16,628 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1f44a51-ba58-4161-8eef-def23d74eff0/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-16 11:54:16,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1f44a51-ba58-4161-8eef-def23d74eff0/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-16 11:54:16,824 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:54:16,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:54:16,824 INFO L85 PathProgramCache]: Analyzing trace with hash -783303832, now seen corresponding path program 3 times [2022-11-16 11:54:16,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:54:16,824 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229962954] [2022-11-16 11:54:16,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:54:16,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:54:16,870 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:54:16,870 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [191790501] [2022-11-16 11:54:16,871 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-16 11:54:16,871 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:54:16,871 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1f44a51-ba58-4161-8eef-def23d74eff0/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:54:16,882 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1f44a51-ba58-4161-8eef-def23d74eff0/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:54:16,883 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1f44a51-ba58-4161-8eef-def23d74eff0/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-16 11:54:16,980 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-16 11:54:16,981 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:54:16,982 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 11:54:16,984 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:54:17,136 INFO L134 CoverageAnalysis]: Checked inductivity of 508 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 507 trivial. 0 not checked. [2022-11-16 11:54:17,136 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:54:17,248 INFO L134 CoverageAnalysis]: Checked inductivity of 508 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 507 trivial. 0 not checked. [2022-11-16 11:54:17,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:54:17,249 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229962954] [2022-11-16 11:54:17,249 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:54:17,249 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [191790501] [2022-11-16 11:54:17,249 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [191790501] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:54:17,249 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:54:17,249 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-11-16 11:54:17,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939483173] [2022-11-16 11:54:17,250 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:54:17,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 11:54:17,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:54:17,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 11:54:17,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-11-16 11:54:17,252 INFO L87 Difference]: Start difference. First operand 127 states and 153 transitions. Second operand has 8 states, 8 states have (on average 3.75) internal successors, (30), 8 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:54:17,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:54:17,409 INFO L93 Difference]: Finished difference Result 590 states and 718 transitions. [2022-11-16 11:54:17,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 11:54:17,410 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.75) internal successors, (30), 8 states have internal predecessors, (30), 0 states have call successors, (0), 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 60 [2022-11-16 11:54:17,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:54:17,412 INFO L225 Difference]: With dead ends: 590 [2022-11-16 11:54:17,412 INFO L226 Difference]: Without dead ends: 491 [2022-11-16 11:54:17,415 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=50, Unknown=0, NotChecked=0, Total=90 [2022-11-16 11:54:17,416 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 158 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:54:17,416 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [158 Valid, 34 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 11:54:17,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 491 states. [2022-11-16 11:54:17,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 491 to 277. [2022-11-16 11:54:17,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 277 states, 276 states have (on average 1.1195652173913044) internal successors, (309), 276 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:54:17,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 309 transitions. [2022-11-16 11:54:17,489 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 309 transitions. Word has length 60 [2022-11-16 11:54:17,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:54:17,490 INFO L495 AbstractCegarLoop]: Abstraction has 277 states and 309 transitions. [2022-11-16 11:54:17,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.75) internal successors, (30), 8 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:54:17,490 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 309 transitions. [2022-11-16 11:54:17,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2022-11-16 11:54:17,504 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:54:17,504 INFO L195 NwaCegarLoop]: trace histogram [88, 88, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:54:17,511 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1f44a51-ba58-4161-8eef-def23d74eff0/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-11-16 11:54:17,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1f44a51-ba58-4161-8eef-def23d74eff0/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:54:17,709 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:54:17,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:54:17,709 INFO L85 PathProgramCache]: Analyzing trace with hash 2132288564, now seen corresponding path program 4 times [2022-11-16 11:54:17,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:54:17,709 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540600335] [2022-11-16 11:54:17,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:54:17,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:54:17,847 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:54:17,848 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1550721312] [2022-11-16 11:54:17,848 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-16 11:54:17,848 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:54:17,848 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1f44a51-ba58-4161-8eef-def23d74eff0/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:54:17,851 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1f44a51-ba58-4161-8eef-def23d74eff0/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:54:17,860 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1f44a51-ba58-4161-8eef-def23d74eff0/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-16 11:59:38,612 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-16 11:59:38,612 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:59:38,696 WARN L261 TraceCheckSpWp]: Trace formula consists of 691 conjuncts, 558 conjunts are in the unsatisfiable core [2022-11-16 11:59:38,739 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:59:38,812 INFO L321 Elim1Store]: treesize reduction 66, result has 25.0 percent of original size [2022-11-16 11:59:38,813 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 36 [2022-11-16 11:59:38,876 INFO L321 Elim1Store]: treesize reduction 180, result has 20.0 percent of original size [2022-11-16 11:59:38,877 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 70 treesize of output 75 [2022-11-16 11:59:39,005 INFO L321 Elim1Store]: treesize reduction 441, result has 17.9 percent of original size [2022-11-16 11:59:39,005 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 108 treesize of output 119 [2022-11-16 11:59:39,203 INFO L321 Elim1Store]: treesize reduction 560, result has 13.7 percent of original size [2022-11-16 11:59:39,204 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 25 case distinctions, treesize of input 136 treesize of output 153 [2022-11-16 11:59:39,443 INFO L321 Elim1Store]: treesize reduction 825, result has 11.9 percent of original size [2022-11-16 11:59:39,443 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 41 case distinctions, treesize of input 169 treesize of output 192 [2022-11-16 11:59:39,758 INFO L321 Elim1Store]: treesize reduction 1140, result has 10.4 percent of original size [2022-11-16 11:59:39,759 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 0 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 61 case distinctions, treesize of input 202 treesize of output 231 [2022-11-16 11:59:40,236 INFO L321 Elim1Store]: treesize reduction 1505, result has 9.3 percent of original size [2022-11-16 11:59:40,237 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 13 select indices, 13 select index equivalence classes, 0 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 85 case distinctions, treesize of input 235 treesize of output 270 [2022-11-16 11:59:41,070 INFO L321 Elim1Store]: treesize reduction 2246, result has 10.9 percent of original size [2022-11-16 11:59:41,071 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 15 select indices, 15 select index equivalence classes, 0 disjoint index pairs (out of 105 index pairs), introduced 15 new quantified variables, introduced 120 case distinctions, treesize of input 273 treesize of output 314 [2022-11-16 11:59:41,795 INFO L321 Elim1Store]: treesize reduction 2385, result has 7.7 percent of original size [2022-11-16 11:59:41,796 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 17 select indices, 17 select index equivalence classes, 0 disjoint index pairs (out of 136 index pairs), introduced 17 new quantified variables, introduced 145 case distinctions, treesize of input 301 treesize of output 348 [2022-11-16 11:59:43,222 INFO L321 Elim1Store]: treesize reduction 3318, result has 9.5 percent of original size [2022-11-16 11:59:43,223 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 19 select indices, 19 select index equivalence classes, 0 disjoint index pairs (out of 171 index pairs), introduced 19 new quantified variables, introduced 190 case distinctions, treesize of input 339 treesize of output 392 [2022-11-16 11:59:44,426 INFO L321 Elim1Store]: treesize reduction 3465, result has 6.6 percent of original size [2022-11-16 11:59:44,426 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 21 select indices, 21 select index equivalence classes, 0 disjoint index pairs (out of 210 index pairs), introduced 21 new quantified variables, introduced 221 case distinctions, treesize of input 367 treesize of output 426 [2022-11-16 11:59:45,935 INFO L321 Elim1Store]: treesize reduction 4080, result has 6.1 percent of original size [2022-11-16 11:59:45,936 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 23 select indices, 23 select index equivalence classes, 0 disjoint index pairs (out of 253 index pairs), introduced 23 new quantified variables, introduced 265 case distinctions, treesize of input 400 treesize of output 465 [2022-11-16 11:59:47,711 INFO L321 Elim1Store]: treesize reduction 4745, result has 5.7 percent of original size [2022-11-16 11:59:47,712 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 25 select indices, 25 select index equivalence classes, 0 disjoint index pairs (out of 300 index pairs), introduced 25 new quantified variables, introduced 313 case distinctions, treesize of input 433 treesize of output 504 [2022-11-16 11:59:50,019 INFO L321 Elim1Store]: treesize reduction 5460, result has 5.4 percent of original size [2022-11-16 11:59:50,020 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 27 select indices, 27 select index equivalence classes, 0 disjoint index pairs (out of 351 index pairs), introduced 27 new quantified variables, introduced 365 case distinctions, treesize of input 466 treesize of output 543 [2022-11-16 11:59:54,154 INFO L321 Elim1Store]: treesize reduction 6873, result has 7.1 percent of original size [2022-11-16 11:59:54,155 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 29 select indices, 29 select index equivalence classes, 0 disjoint index pairs (out of 406 index pairs), introduced 29 new quantified variables, introduced 435 case distinctions, treesize of input 504 treesize of output 587 [2022-11-16 11:59:57,703 INFO L321 Elim1Store]: treesize reduction 7040, result has 4.8 percent of original size [2022-11-16 11:59:57,703 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 31 select indices, 31 select index equivalence classes, 0 disjoint index pairs (out of 465 index pairs), introduced 31 new quantified variables, introduced 481 case distinctions, treesize of input 532 treesize of output 621 [2022-11-16 12:00:01,901 INFO L321 Elim1Store]: treesize reduction 7905, result has 4.5 percent of original size [2022-11-16 12:00:01,902 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 33 select indices, 33 select index equivalence classes, 0 disjoint index pairs (out of 528 index pairs), introduced 33 new quantified variables, introduced 545 case distinctions, treesize of input 565 treesize of output 660 [2022-11-16 12:00:08,913 WARN L233 SmtUtils]: Spent 6.67s on a formula simplification. DAG size of input: 1174 DAG size of output: 192 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-11-16 12:00:08,918 INFO L321 Elim1Store]: treesize reduction 9606, result has 6.2 percent of original size [2022-11-16 12:00:08,918 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 35 select indices, 35 select index equivalence classes, 0 disjoint index pairs (out of 595 index pairs), introduced 35 new quantified variables, introduced 630 case distinctions, treesize of input 603 treesize of output 704 [2022-11-16 12:00:14,844 WARN L233 SmtUtils]: Spent 5.55s on a formula simplification. DAG size of input: 1042 DAG size of output: 109 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-11-16 12:00:14,848 INFO L321 Elim1Store]: treesize reduction 9785, result has 4.1 percent of original size [2022-11-16 12:00:14,848 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 37 select indices, 37 select index equivalence classes, 0 disjoint index pairs (out of 666 index pairs), introduced 37 new quantified variables, introduced 685 case distinctions, treesize of input 631 treesize of output 738 [2022-11-16 12:00:21,907 WARN L233 SmtUtils]: Spent 6.66s on a formula simplification. DAG size of input: 1136 DAG size of output: 114 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-11-16 12:00:21,908 INFO L321 Elim1Store]: treesize reduction 10800, result has 3.9 percent of original size [2022-11-16 12:00:21,909 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 39 select indices, 39 select index equivalence classes, 0 disjoint index pairs (out of 741 index pairs), introduced 39 new quantified variables, introduced 761 case distinctions, treesize of input 664 treesize of output 777 [2022-11-16 12:00:30,173 WARN L233 SmtUtils]: Spent 7.80s on a formula simplification. DAG size of input: 1234 DAG size of output: 119 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-11-16 12:00:30,174 INFO L321 Elim1Store]: treesize reduction 11865, result has 3.8 percent of original size [2022-11-16 12:00:30,174 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 41 select indices, 41 select index equivalence classes, 0 disjoint index pairs (out of 820 index pairs), introduced 41 new quantified variables, introduced 841 case distinctions, treesize of input 697 treesize of output 816 [2022-11-16 12:00:39,960 WARN L233 SmtUtils]: Spent 9.31s on a formula simplification. DAG size of input: 1336 DAG size of output: 124 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-11-16 12:00:39,964 INFO L321 Elim1Store]: treesize reduction 12980, result has 3.6 percent of original size [2022-11-16 12:00:39,964 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 43 select indices, 43 select index equivalence classes, 0 disjoint index pairs (out of 903 index pairs), introduced 43 new quantified variables, introduced 925 case distinctions, treesize of input 730 treesize of output 855 [2022-11-16 12:00:56,374 WARN L233 SmtUtils]: Spent 14.63s on a formula simplification. DAG size of input: 1708 DAG size of output: 243 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-11-16 12:00:56,375 INFO L321 Elim1Store]: treesize reduction 16630, result has 4.8 percent of original size [2022-11-16 12:00:56,375 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 45 select indices, 45 select index equivalence classes, 0 disjoint index pairs (out of 990 index pairs), introduced 45 new quantified variables, introduced 1035 case distinctions, treesize of input 784 treesize of output 915 [2022-11-16 12:01:18,456 WARN L233 SmtUtils]: Spent 21.56s on a formula simplification. DAG size of input: 2029 DAG size of output: 254 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-11-16 12:01:18,459 INFO L321 Elim1Store]: treesize reduction 18926, result has 4.4 percent of original size [2022-11-16 12:01:18,460 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 47 select indices, 47 select index equivalence classes, 0 disjoint index pairs (out of 1081 index pairs), introduced 47 new quantified variables, introduced 1128 case distinctions, treesize of input 822 treesize of output 959 [2022-11-16 12:01:42,471 WARN L233 SmtUtils]: Spent 23.41s on a formula simplification. DAG size of input: 2108 DAG size of output: 251 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-11-16 12:01:42,472 INFO L321 Elim1Store]: treesize reduction 20270, result has 4.2 percent of original size [2022-11-16 12:01:42,473 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 49 select indices, 49 select index equivalence classes, 0 disjoint index pairs (out of 1176 index pairs), introduced 49 new quantified variables, introduced 1223 case distinctions, treesize of input 850 treesize of output 993 [2022-11-16 12:02:10,390 WARN L233 SmtUtils]: Spent 27.32s on a formula simplification. DAG size of input: 2314 DAG size of output: 255 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-11-16 12:02:10,392 INFO L321 Elim1Store]: treesize reduction 22171, result has 3.9 percent of original size [2022-11-16 12:02:10,393 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 51 select indices, 51 select index equivalence classes, 0 disjoint index pairs (out of 1275 index pairs), introduced 51 new quantified variables, introduced 1323 case distinctions, treesize of input 883 treesize of output 1032 [2022-11-16 12:02:46,479 WARN L233 SmtUtils]: Spent 35.50s on a formula simplification. DAG size of input: 2683 DAG size of output: 278 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-11-16 12:02:46,481 INFO L321 Elim1Store]: treesize reduction 24749, result has 3.8 percent of original size [2022-11-16 12:02:46,481 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 53 select indices, 53 select index equivalence classes, 0 disjoint index pairs (out of 1378 index pairs), introduced 53 new quantified variables, introduced 1431 case distinctions, treesize of input 921 treesize of output 1076 [2022-11-16 12:03:30,419 WARN L233 SmtUtils]: Spent 43.26s on a formula simplification. DAG size of input: 2919 DAG size of output: 282 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-11-16 12:03:30,420 INFO L321 Elim1Store]: treesize reduction 27159, result has 3.6 percent of original size [2022-11-16 12:03:30,420 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 55 select indices, 55 select index equivalence classes, 0 disjoint index pairs (out of 1485 index pairs), introduced 55 new quantified variables, introduced 1539 case distinctions, treesize of input 960 treesize of output 1121 [2022-11-16 12:04:22,519 WARN L233 SmtUtils]: Spent 51.33s on a formula simplification. DAG size of input: 3159 DAG size of output: 286 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-11-16 12:04:22,521 INFO L321 Elim1Store]: treesize reduction 29625, result has 3.4 percent of original size [2022-11-16 12:04:22,521 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 57 select indices, 57 select index equivalence classes, 0 disjoint index pairs (out of 1596 index pairs), introduced 57 new quantified variables, introduced 1651 case distinctions, treesize of input 999 treesize of output 1166 [2022-11-16 12:05:22,607 WARN L233 SmtUtils]: Spent 59.35s on a formula simplification. DAG size of input: 3403 DAG size of output: 290 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-11-16 12:05:22,608 INFO L321 Elim1Store]: treesize reduction 32147, result has 3.2 percent of original size [2022-11-16 12:05:22,608 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 59 select indices, 59 select index equivalence classes, 0 disjoint index pairs (out of 1711 index pairs), introduced 59 new quantified variables, introduced 1767 case distinctions, treesize of input 1038 treesize of output 1211 [2022-11-16 12:06:26,375 WARN L233 SmtUtils]: Spent 1.05m on a formula simplification. DAG size of input: 3404 DAG size of output: 275 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-11-16 12:06:26,377 INFO L321 Elim1Store]: treesize reduction 32486, result has 3.0 percent of original size [2022-11-16 12:06:26,377 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 61 select indices, 61 select index equivalence classes, 0 disjoint index pairs (out of 1830 index pairs), introduced 61 new quantified variables, introduced 1883 case distinctions, treesize of input 1048 treesize of output 1227 [2022-11-16 12:07:44,358 WARN L233 SmtUtils]: Spent 1.29m on a formula simplification. DAG size of input: 3853 DAG size of output: 318 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-11-16 12:07:44,359 INFO L321 Elim1Store]: treesize reduction 35534, result has 3.2 percent of original size [2022-11-16 12:07:44,360 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 63 select indices, 63 select index equivalence classes, 0 disjoint index pairs (out of 1953 index pairs), introduced 63 new quantified variables, introduced 2016 case distinctions, treesize of input 1086 treesize of output 1271