./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-fpi/ifeqn5.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fb4d7e7-a6c1-4955-8b12-930ab79c7f2f/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fb4d7e7-a6c1-4955-8b12-930ab79c7f2f/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fb4d7e7-a6c1-4955-8b12-930ab79c7f2f/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fb4d7e7-a6c1-4955-8b12-930ab79c7f2f/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-fpi/ifeqn5.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fb4d7e7-a6c1-4955-8b12-930ab79c7f2f/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fb4d7e7-a6c1-4955-8b12-930ab79c7f2f/bin/uautomizer-ug76WZFUDN --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 2e5b1d71ba93ce7431f315c72529ea116ea643f5eb9195d392455a202e45b249 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-6b4ec56 [2022-11-20 11:29:31,313 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 11:29:31,316 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 11:29:31,352 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 11:29:31,353 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 11:29:31,358 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 11:29:31,361 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 11:29:31,364 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 11:29:31,367 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 11:29:31,373 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 11:29:31,376 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 11:29:31,379 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 11:29:31,379 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 11:29:31,382 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 11:29:31,384 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 11:29:31,387 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 11:29:31,389 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 11:29:31,390 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 11:29:31,393 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 11:29:31,401 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 11:29:31,402 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 11:29:31,405 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 11:29:31,407 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 11:29:31,408 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 11:29:31,420 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 11:29:31,421 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 11:29:31,421 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 11:29:31,424 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 11:29:31,424 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 11:29:31,426 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 11:29:31,427 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 11:29:31,428 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 11:29:31,430 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 11:29:31,432 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 11:29:31,435 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 11:29:31,436 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 11:29:31,437 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 11:29:31,437 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 11:29:31,437 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 11:29:31,439 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 11:29:31,440 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 11:29:31,441 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fb4d7e7-a6c1-4955-8b12-930ab79c7f2f/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-20 11:29:31,498 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 11:29:31,499 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 11:29:31,500 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 11:29:31,500 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 11:29:31,501 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 11:29:31,502 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 11:29:31,503 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 11:29:31,503 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 11:29:31,503 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 11:29:31,504 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 11:29:31,505 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 11:29:31,506 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 11:29:31,506 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 11:29:31,506 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 11:29:31,507 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 11:29:31,507 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 11:29:31,508 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 11:29:31,508 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 11:29:31,508 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 11:29:31,509 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 11:29:31,509 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 11:29:31,509 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 11:29:31,510 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 11:29:31,510 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 11:29:31,511 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:29:31,511 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 11:29:31,511 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 11:29:31,512 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 11:29:31,513 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 11:29:31,513 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 11:29:31,513 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 11:29:31,514 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 11:29:31,514 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 11:29:31,515 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_7fb4d7e7-a6c1-4955-8b12-930ab79c7f2f/bin/uautomizer-ug76WZFUDN/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fb4d7e7-a6c1-4955-8b12-930ab79c7f2f/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2e5b1d71ba93ce7431f315c72529ea116ea643f5eb9195d392455a202e45b249 [2022-11-20 11:29:31,876 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 11:29:31,920 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 11:29:31,924 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 11:29:31,925 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 11:29:31,926 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 11:29:31,928 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fb4d7e7-a6c1-4955-8b12-930ab79c7f2f/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/array-fpi/ifeqn5.c [2022-11-20 11:29:35,238 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 11:29:35,457 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 11:29:35,458 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fb4d7e7-a6c1-4955-8b12-930ab79c7f2f/sv-benchmarks/c/array-fpi/ifeqn5.c [2022-11-20 11:29:35,465 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fb4d7e7-a6c1-4955-8b12-930ab79c7f2f/bin/uautomizer-ug76WZFUDN/data/f04649481/3bbbdfeb64014caebdc0227d97371142/FLAGadf2a7554 [2022-11-20 11:29:35,483 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fb4d7e7-a6c1-4955-8b12-930ab79c7f2f/bin/uautomizer-ug76WZFUDN/data/f04649481/3bbbdfeb64014caebdc0227d97371142 [2022-11-20 11:29:35,486 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 11:29:35,488 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 11:29:35,490 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 11:29:35,490 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 11:29:35,494 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 11:29:35,495 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:29:35" (1/1) ... [2022-11-20 11:29:35,497 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61daba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:29:35, skipping insertion in model container [2022-11-20 11:29:35,497 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:29:35" (1/1) ... [2022-11-20 11:29:35,506 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 11:29:35,523 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 11:29:35,698 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fb4d7e7-a6c1-4955-8b12-930ab79c7f2f/sv-benchmarks/c/array-fpi/ifeqn5.c[589,602] [2022-11-20 11:29:35,722 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:29:35,733 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 11:29:35,747 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fb4d7e7-a6c1-4955-8b12-930ab79c7f2f/sv-benchmarks/c/array-fpi/ifeqn5.c[589,602] [2022-11-20 11:29:35,758 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:29:35,772 INFO L208 MainTranslator]: Completed translation [2022-11-20 11:29:35,773 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:29:35 WrapperNode [2022-11-20 11:29:35,773 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 11:29:35,774 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 11:29:35,774 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 11:29:35,775 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 11:29:35,781 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:29:35" (1/1) ... [2022-11-20 11:29:35,788 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:29:35" (1/1) ... [2022-11-20 11:29:35,808 INFO L138 Inliner]: procedures = 16, calls = 19, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 74 [2022-11-20 11:29:35,809 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 11:29:35,810 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 11:29:35,810 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 11:29:35,810 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 11:29:35,818 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:29:35" (1/1) ... [2022-11-20 11:29:35,818 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:29:35" (1/1) ... [2022-11-20 11:29:35,821 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:29:35" (1/1) ... [2022-11-20 11:29:35,821 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:29:35" (1/1) ... [2022-11-20 11:29:35,827 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:29:35" (1/1) ... [2022-11-20 11:29:35,832 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:29:35" (1/1) ... [2022-11-20 11:29:35,833 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:29:35" (1/1) ... [2022-11-20 11:29:35,834 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:29:35" (1/1) ... [2022-11-20 11:29:35,836 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 11:29:35,837 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 11:29:35,837 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 11:29:35,838 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 11:29:35,839 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:29:35" (1/1) ... [2022-11-20 11:29:35,846 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:29:35,863 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fb4d7e7-a6c1-4955-8b12-930ab79c7f2f/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:29:35,877 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fb4d7e7-a6c1-4955-8b12-930ab79c7f2f/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 11:29:35,879 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fb4d7e7-a6c1-4955-8b12-930ab79c7f2f/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 11:29:35,926 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 11:29:35,927 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 11:29:35,927 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 11:29:35,928 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-20 11:29:35,928 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 11:29:35,928 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 11:29:35,928 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 11:29:36,022 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 11:29:36,024 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 11:29:36,221 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 11:29:36,228 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 11:29:36,229 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-20 11:29:36,231 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:29:36 BoogieIcfgContainer [2022-11-20 11:29:36,231 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 11:29:36,235 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 11:29:36,235 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 11:29:36,239 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 11:29:36,239 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 11:29:35" (1/3) ... [2022-11-20 11:29:36,240 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f0f1b27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:29:36, skipping insertion in model container [2022-11-20 11:29:36,241 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:29:35" (2/3) ... [2022-11-20 11:29:36,241 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f0f1b27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:29:36, skipping insertion in model container [2022-11-20 11:29:36,241 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:29:36" (3/3) ... [2022-11-20 11:29:36,243 INFO L112 eAbstractionObserver]: Analyzing ICFG ifeqn5.c [2022-11-20 11:29:36,291 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 11:29:36,292 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 11:29:36,358 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 11:29:36,386 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;@4daf5b81, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 11:29:36,386 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-20 11:29:36,408 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 21 states have (on average 1.5714285714285714) internal successors, (33), 22 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) [2022-11-20 11:29:36,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-20 11:29:36,415 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:29:36,416 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:29:36,417 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:29:36,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:29:36,429 INFO L85 PathProgramCache]: Analyzing trace with hash -1670316217, now seen corresponding path program 1 times [2022-11-20 11:29:36,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:29:36,452 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021761425] [2022-11-20 11:29:36,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:29:36,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:29:36,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:29:36,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:29:36,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021761425] [2022-11-20 11:29:36,637 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-20 11:29:36,638 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [794397240] [2022-11-20 11:29:36,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:29:36,639 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:29:36,640 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fb4d7e7-a6c1-4955-8b12-930ab79c7f2f/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:29:36,646 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fb4d7e7-a6c1-4955-8b12-930ab79c7f2f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:29:36,680 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fb4d7e7-a6c1-4955-8b12-930ab79c7f2f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 11:29:36,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:29:36,774 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-20 11:29:36,779 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:29:36,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:29:36,804 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:29:36,805 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [794397240] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:29:36,805 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:29:36,806 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 11:29:36,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807855214] [2022-11-20 11:29:36,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:29:36,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-20 11:29:36,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:29:36,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-20 11:29:36,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 11:29:36,880 INFO L87 Difference]: Start difference. First operand has 23 states, 21 states have (on average 1.5714285714285714) internal successors, (33), 22 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 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:29:36,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:29:36,902 INFO L93 Difference]: Finished difference Result 42 states and 60 transitions. [2022-11-20 11:29:36,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-20 11:29:36,905 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 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 12 [2022-11-20 11:29:36,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:29:36,917 INFO L225 Difference]: With dead ends: 42 [2022-11-20 11:29:36,917 INFO L226 Difference]: Without dead ends: 19 [2022-11-20 11:29:36,924 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 11:29:36,932 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:29:36,934 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 11:29:36,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2022-11-20 11:29:36,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2022-11-20 11:29:36,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 18 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) [2022-11-20 11:29:36,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 23 transitions. [2022-11-20 11:29:36,980 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 23 transitions. Word has length 12 [2022-11-20 11:29:36,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:29:36,981 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 23 transitions. [2022-11-20 11:29:36,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:29:36,982 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 23 transitions. [2022-11-20 11:29:36,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-20 11:29:36,984 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:29:36,984 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:29:36,997 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fb4d7e7-a6c1-4955-8b12-930ab79c7f2f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-20 11:29:37,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fb4d7e7-a6c1-4955-8b12-930ab79c7f2f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-11-20 11:29:37,198 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:29:37,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:29:37,204 INFO L85 PathProgramCache]: Analyzing trace with hash -1000416578, now seen corresponding path program 1 times [2022-11-20 11:29:37,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:29:37,205 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373468815] [2022-11-20 11:29:37,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:29:37,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:29:37,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:29:37,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:29:37,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373468815] [2022-11-20 11:29:37,291 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-20 11:29:37,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2116195467] [2022-11-20 11:29:37,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:29:37,292 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:29:37,293 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fb4d7e7-a6c1-4955-8b12-930ab79c7f2f/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:29:37,294 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fb4d7e7-a6c1-4955-8b12-930ab79c7f2f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:29:37,298 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fb4d7e7-a6c1-4955-8b12-930ab79c7f2f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 11:29:37,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:29:37,372 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 11:29:37,374 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:29:37,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:29:37,435 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:29:37,436 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2116195467] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:29:37,436 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:29:37,436 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 11:29:37,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588144377] [2022-11-20 11:29:37,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:29:37,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:29:37,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:29:37,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:29:37,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:29:37,439 INFO L87 Difference]: Start difference. First operand 19 states and 23 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:29:37,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:29:37,516 INFO L93 Difference]: Finished difference Result 42 states and 52 transitions. [2022-11-20 11:29:37,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 11:29:37,517 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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 12 [2022-11-20 11:29:37,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:29:37,517 INFO L225 Difference]: With dead ends: 42 [2022-11-20 11:29:37,518 INFO L226 Difference]: Without dead ends: 31 [2022-11-20 11:29:37,518 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:29:37,520 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 29 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:29:37,521 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 15 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 11:29:37,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-11-20 11:29:37,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 21. [2022-11-20 11:29:37,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 20 states have (on average 1.25) internal successors, (25), 20 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:29:37,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2022-11-20 11:29:37,527 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 12 [2022-11-20 11:29:37,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:29:37,528 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2022-11-20 11:29:37,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:29:37,528 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2022-11-20 11:29:37,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-20 11:29:37,529 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:29:37,529 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:29:37,543 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fb4d7e7-a6c1-4955-8b12-930ab79c7f2f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-20 11:29:37,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fb4d7e7-a6c1-4955-8b12-930ab79c7f2f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:29:37,735 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:29:37,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:29:37,736 INFO L85 PathProgramCache]: Analyzing trace with hash -1992201947, now seen corresponding path program 1 times [2022-11-20 11:29:37,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:29:37,737 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298862339] [2022-11-20 11:29:37,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:29:37,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:29:37,787 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 11:29:37,787 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1123666435] [2022-11-20 11:29:37,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:29:37,788 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:29:37,788 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fb4d7e7-a6c1-4955-8b12-930ab79c7f2f/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:29:37,802 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fb4d7e7-a6c1-4955-8b12-930ab79c7f2f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:29:37,823 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fb4d7e7-a6c1-4955-8b12-930ab79c7f2f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 11:29:37,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:29:37,924 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-20 11:29:37,927 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:29:37,975 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-20 11:29:38,103 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 11:29:38,104 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:29:38,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:29:38,106 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298862339] [2022-11-20 11:29:38,106 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 11:29:38,107 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1123666435] [2022-11-20 11:29:38,107 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1123666435] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:29:38,107 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:29:38,108 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 11:29:38,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553558603] [2022-11-20 11:29:38,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:29:38,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 11:29:38,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:29:38,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 11:29:38,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-20 11:29:38,112 INFO L87 Difference]: Start difference. First operand 21 states and 25 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 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) [2022-11-20 11:29:38,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:29:38,310 INFO L93 Difference]: Finished difference Result 38 states and 44 transitions. [2022-11-20 11:29:38,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 11:29:38,315 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 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 18 [2022-11-20 11:29:38,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:29:38,319 INFO L225 Difference]: With dead ends: 38 [2022-11-20 11:29:38,319 INFO L226 Difference]: Without dead ends: 36 [2022-11-20 11:29:38,320 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:29:38,324 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 16 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:29:38,331 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 70 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 11:29:38,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2022-11-20 11:29:38,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 26. [2022-11-20 11:29:38,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 25 states have (on average 1.24) internal successors, (31), 25 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:29:38,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 31 transitions. [2022-11-20 11:29:38,349 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 31 transitions. Word has length 18 [2022-11-20 11:29:38,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:29:38,349 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 31 transitions. [2022-11-20 11:29:38,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 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) [2022-11-20 11:29:38,350 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 31 transitions. [2022-11-20 11:29:38,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-20 11:29:38,352 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:29:38,352 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:29:38,367 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fb4d7e7-a6c1-4955-8b12-930ab79c7f2f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-20 11:29:38,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fb4d7e7-a6c1-4955-8b12-930ab79c7f2f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:29:38,558 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:29:38,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:29:38,559 INFO L85 PathProgramCache]: Analyzing trace with hash -217194585, now seen corresponding path program 1 times [2022-11-20 11:29:38,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:29:38,560 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287510037] [2022-11-20 11:29:38,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:29:38,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:29:38,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:29:38,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:29:38,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287510037] [2022-11-20 11:29:38,670 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-20 11:29:38,670 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [557798989] [2022-11-20 11:29:38,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:29:38,671 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:29:38,671 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fb4d7e7-a6c1-4955-8b12-930ab79c7f2f/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:29:38,673 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fb4d7e7-a6c1-4955-8b12-930ab79c7f2f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:29:38,682 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fb4d7e7-a6c1-4955-8b12-930ab79c7f2f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-20 11:29:38,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:29:38,763 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 11:29:38,765 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:29:38,781 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 11:29:38,790 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:29:38,791 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [557798989] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:29:38,791 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:29:38,791 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:29:38,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693588466] [2022-11-20 11:29:38,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:29:38,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:29:38,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:29:38,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:29:38,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:29:38,794 INFO L87 Difference]: Start difference. First operand 26 states and 31 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 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) [2022-11-20 11:29:38,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:29:38,855 INFO L93 Difference]: Finished difference Result 55 states and 67 transitions. [2022-11-20 11:29:38,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:29:38,858 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 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 18 [2022-11-20 11:29:38,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:29:38,859 INFO L225 Difference]: With dead ends: 55 [2022-11-20 11:29:38,859 INFO L226 Difference]: Without dead ends: 35 [2022-11-20 11:29:38,860 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:29:38,861 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 8 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:29:38,862 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 22 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 11:29:38,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2022-11-20 11:29:38,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 28. [2022-11-20 11:29:38,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.2222222222222223) internal successors, (33), 27 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) [2022-11-20 11:29:38,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 33 transitions. [2022-11-20 11:29:38,868 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 33 transitions. Word has length 18 [2022-11-20 11:29:38,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:29:38,868 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 33 transitions. [2022-11-20 11:29:38,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 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) [2022-11-20 11:29:38,869 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 33 transitions. [2022-11-20 11:29:38,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-20 11:29:38,870 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:29:38,870 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:29:38,880 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fb4d7e7-a6c1-4955-8b12-930ab79c7f2f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-20 11:29:39,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fb4d7e7-a6c1-4955-8b12-930ab79c7f2f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:29:39,076 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:29:39,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:29:39,077 INFO L85 PathProgramCache]: Analyzing trace with hash 259417010, now seen corresponding path program 1 times [2022-11-20 11:29:39,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:29:39,077 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775806717] [2022-11-20 11:29:39,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:29:39,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:29:39,114 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 11:29:39,114 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1586346166] [2022-11-20 11:29:39,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:29:39,115 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:29:39,115 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fb4d7e7-a6c1-4955-8b12-930ab79c7f2f/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:29:39,119 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fb4d7e7-a6c1-4955-8b12-930ab79c7f2f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:29:39,130 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fb4d7e7-a6c1-4955-8b12-930ab79c7f2f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-20 11:29:39,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:29:39,206 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-20 11:29:39,208 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:29:39,286 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:29:39,286 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:29:39,346 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:29:39,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:29:39,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775806717] [2022-11-20 11:29:39,347 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 11:29:39,348 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1586346166] [2022-11-20 11:29:39,348 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1586346166] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:29:39,348 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:29:39,348 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2022-11-20 11:29:39,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403937304] [2022-11-20 11:29:39,349 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:29:39,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-20 11:29:39,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:29:39,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-20 11:29:39,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-11-20 11:29:39,351 INFO L87 Difference]: Start difference. First operand 28 states and 33 transitions. Second operand has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:29:39,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:29:39,567 INFO L93 Difference]: Finished difference Result 70 states and 82 transitions. [2022-11-20 11:29:39,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 11:29:39,568 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-11-20 11:29:39,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:29:39,569 INFO L225 Difference]: With dead ends: 70 [2022-11-20 11:29:39,569 INFO L226 Difference]: Without dead ends: 43 [2022-11-20 11:29:39,570 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 30 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2022-11-20 11:29:39,571 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 48 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 11:29:39,572 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 43 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 11:29:39,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2022-11-20 11:29:39,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 27. [2022-11-20 11:29:39,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.1923076923076923) internal successors, (31), 26 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:29:39,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2022-11-20 11:29:39,586 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 21 [2022-11-20 11:29:39,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:29:39,587 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2022-11-20 11:29:39,587 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:29:39,587 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2022-11-20 11:29:39,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-20 11:29:39,589 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:29:39,589 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:29:39,597 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fb4d7e7-a6c1-4955-8b12-930ab79c7f2f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-20 11:29:39,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fb4d7e7-a6c1-4955-8b12-930ab79c7f2f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:29:39,797 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:29:39,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:29:39,798 INFO L85 PathProgramCache]: Analyzing trace with hash 939318754, now seen corresponding path program 1 times [2022-11-20 11:29:39,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:29:39,799 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523394121] [2022-11-20 11:29:39,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:29:39,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:29:39,857 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 11:29:39,862 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2032878135] [2022-11-20 11:29:39,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:29:39,863 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:29:39,863 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fb4d7e7-a6c1-4955-8b12-930ab79c7f2f/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:29:39,865 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fb4d7e7-a6c1-4955-8b12-930ab79c7f2f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:29:39,898 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fb4d7e7-a6c1-4955-8b12-930ab79c7f2f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-20 11:29:40,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:29:40,004 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 27 conjunts are in the unsatisfiable core [2022-11-20 11:29:40,008 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:29:40,097 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-20 11:29:40,188 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:29:40,189 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-20 11:29:40,254 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:29:40,255 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:29:40,608 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 19 [2022-11-20 11:29:40,647 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-20 11:29:40,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:29:40,648 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523394121] [2022-11-20 11:29:40,648 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 11:29:40,648 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2032878135] [2022-11-20 11:29:40,648 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2032878135] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:29:40,648 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:29:40,648 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 15 [2022-11-20 11:29:40,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288767816] [2022-11-20 11:29:40,649 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:29:40,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-20 11:29:40,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:29:40,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-20 11:29:40,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2022-11-20 11:29:40,654 INFO L87 Difference]: Start difference. First operand 27 states and 31 transitions. Second operand has 15 states, 15 states have (on average 2.7333333333333334) internal successors, (41), 15 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:29:41,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:29:41,477 INFO L93 Difference]: Finished difference Result 109 states and 129 transitions. [2022-11-20 11:29:41,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-11-20 11:29:41,478 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.7333333333333334) internal successors, (41), 15 states have internal predecessors, (41), 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 [2022-11-20 11:29:41,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:29:41,479 INFO L225 Difference]: With dead ends: 109 [2022-11-20 11:29:41,479 INFO L226 Difference]: Without dead ends: 89 [2022-11-20 11:29:41,480 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 34 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=209, Invalid=603, Unknown=0, NotChecked=0, Total=812 [2022-11-20 11:29:41,481 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 142 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 71 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 11:29:41,481 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 88 Invalid, 243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 140 Invalid, 0 Unknown, 71 Unchecked, 0.3s Time] [2022-11-20 11:29:41,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2022-11-20 11:29:41,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 44. [2022-11-20 11:29:41,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 43 states have (on average 1.2325581395348837) internal successors, (53), 43 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:29:41,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 53 transitions. [2022-11-20 11:29:41,501 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 53 transitions. Word has length 24 [2022-11-20 11:29:41,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:29:41,502 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 53 transitions. [2022-11-20 11:29:41,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.7333333333333334) internal successors, (41), 15 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:29:41,505 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 53 transitions. [2022-11-20 11:29:41,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-20 11:29:41,507 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:29:41,508 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:29:41,520 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fb4d7e7-a6c1-4955-8b12-930ab79c7f2f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-20 11:29:41,713 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fb4d7e7-a6c1-4955-8b12-930ab79c7f2f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-20 11:29:41,714 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:29:41,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:29:41,714 INFO L85 PathProgramCache]: Analyzing trace with hash 430403928, now seen corresponding path program 1 times [2022-11-20 11:29:41,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:29:41,715 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55494486] [2022-11-20 11:29:41,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:29:41,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:29:41,743 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 11:29:41,744 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1497788679] [2022-11-20 11:29:41,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:29:41,744 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:29:41,745 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fb4d7e7-a6c1-4955-8b12-930ab79c7f2f/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:29:41,746 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fb4d7e7-a6c1-4955-8b12-930ab79c7f2f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:29:41,755 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fb4d7e7-a6c1-4955-8b12-930ab79c7f2f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-20 11:29:41,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:29:41,921 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 43 conjunts are in the unsatisfiable core [2022-11-20 11:29:41,927 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:29:41,940 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-11-20 11:29:41,983 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-20 11:29:42,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:29:42,071 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-20 11:29:42,171 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2022-11-20 11:29:42,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:29:42,298 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-20 11:29:42,299 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 32 [2022-11-20 11:29:42,566 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:29:42,566 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:29:43,846 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:29:43,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:29:43,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55494486] [2022-11-20 11:29:43,847 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 11:29:43,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1497788679] [2022-11-20 11:29:43,847 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1497788679] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:29:43,848 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:29:43,848 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13] total 23 [2022-11-20 11:29:43,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985687069] [2022-11-20 11:29:43,848 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:29:43,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-20 11:29:43,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:29:43,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-20 11:29:43,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=417, Unknown=0, NotChecked=0, Total=506 [2022-11-20 11:29:43,850 INFO L87 Difference]: Start difference. First operand 44 states and 53 transitions. Second operand has 23 states, 23 states have (on average 2.217391304347826) internal successors, (51), 23 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:29:48,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:29:48,563 INFO L93 Difference]: Finished difference Result 172 states and 205 transitions. [2022-11-20 11:29:48,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-20 11:29:48,564 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.217391304347826) internal successors, (51), 23 states have internal predecessors, (51), 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 28 [2022-11-20 11:29:48,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:29:48,565 INFO L225 Difference]: With dead ends: 172 [2022-11-20 11:29:48,565 INFO L226 Difference]: Without dead ends: 152 [2022-11-20 11:29:48,567 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 34 SyntacticMatches, 4 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 492 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=438, Invalid=1454, Unknown=0, NotChecked=0, Total=1892 [2022-11-20 11:29:48,567 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 226 mSDsluCounter, 203 mSDsCounter, 0 mSdLazyCounter, 323 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 226 SdHoareTripleChecker+Valid, 219 SdHoareTripleChecker+Invalid, 508 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 323 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 127 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-20 11:29:48,568 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [226 Valid, 219 Invalid, 508 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 323 Invalid, 0 Unknown, 127 Unchecked, 0.8s Time] [2022-11-20 11:29:48,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2022-11-20 11:29:48,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 83. [2022-11-20 11:29:48,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 82 states have (on average 1.2804878048780488) internal successors, (105), 82 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:29:48,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 105 transitions. [2022-11-20 11:29:48,589 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 105 transitions. Word has length 28 [2022-11-20 11:29:48,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:29:48,589 INFO L495 AbstractCegarLoop]: Abstraction has 83 states and 105 transitions. [2022-11-20 11:29:48,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.217391304347826) internal successors, (51), 23 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:29:48,590 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 105 transitions. [2022-11-20 11:29:48,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-11-20 11:29:48,591 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:29:48,591 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:29:48,602 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fb4d7e7-a6c1-4955-8b12-930ab79c7f2f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-20 11:29:48,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fb4d7e7-a6c1-4955-8b12-930ab79c7f2f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:29:48,803 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:29:48,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:29:48,803 INFO L85 PathProgramCache]: Analyzing trace with hash 939270440, now seen corresponding path program 2 times [2022-11-20 11:29:48,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:29:48,804 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803535973] [2022-11-20 11:29:48,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:29:48,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:29:48,878 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 11:29:48,878 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [86011640] [2022-11-20 11:29:48,878 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 11:29:48,879 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:29:48,879 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fb4d7e7-a6c1-4955-8b12-930ab79c7f2f/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:29:48,887 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fb4d7e7-a6c1-4955-8b12-930ab79c7f2f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:29:48,911 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fb4d7e7-a6c1-4955-8b12-930ab79c7f2f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-20 11:29:48,980 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 11:29:48,980 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:29:48,981 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-20 11:29:48,983 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:29:49,094 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 5 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-20 11:29:49,094 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:29:49,179 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 5 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-20 11:29:49,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:29:49,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803535973] [2022-11-20 11:29:49,180 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 11:29:49,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [86011640] [2022-11-20 11:29:49,181 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [86011640] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:29:49,181 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:29:49,181 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2022-11-20 11:29:49,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272798877] [2022-11-20 11:29:49,182 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:29:49,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 11:29:49,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:29:49,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 11:29:49,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2022-11-20 11:29:49,183 INFO L87 Difference]: Start difference. First operand 83 states and 105 transitions. Second operand has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:29:49,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:29:49,484 INFO L93 Difference]: Finished difference Result 171 states and 211 transitions. [2022-11-20 11:29:49,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-20 11:29:49,485 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2022-11-20 11:29:49,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:29:49,486 INFO L225 Difference]: With dead ends: 171 [2022-11-20 11:29:49,486 INFO L226 Difference]: Without dead ends: 95 [2022-11-20 11:29:49,487 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 46 SyntacticMatches, 4 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2022-11-20 11:29:49,488 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 92 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 11:29:49,488 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 80 Invalid, 205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 184 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 11:29:49,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2022-11-20 11:29:49,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 58. [2022-11-20 11:29:49,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 57 states have (on average 1.1403508771929824) internal successors, (65), 57 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:29:49,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 65 transitions. [2022-11-20 11:29:49,532 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 65 transitions. Word has length 31 [2022-11-20 11:29:49,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:29:49,532 INFO L495 AbstractCegarLoop]: Abstraction has 58 states and 65 transitions. [2022-11-20 11:29:49,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:29:49,533 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 65 transitions. [2022-11-20 11:29:49,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-20 11:29:49,534 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:29:49,534 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:29:49,546 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fb4d7e7-a6c1-4955-8b12-930ab79c7f2f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-11-20 11:29:49,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fb4d7e7-a6c1-4955-8b12-930ab79c7f2f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:29:49,741 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:29:49,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:29:49,741 INFO L85 PathProgramCache]: Analyzing trace with hash 877615566, now seen corresponding path program 3 times [2022-11-20 11:29:49,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:29:49,742 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879092977] [2022-11-20 11:29:49,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:29:49,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:29:49,792 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 11:29:49,797 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1198768618] [2022-11-20 11:29:49,797 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 11:29:49,797 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:29:49,797 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fb4d7e7-a6c1-4955-8b12-930ab79c7f2f/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:29:49,812 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fb4d7e7-a6c1-4955-8b12-930ab79c7f2f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:29:49,835 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fb4d7e7-a6c1-4955-8b12-930ab79c7f2f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-20 11:29:49,960 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-20 11:29:49,960 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:29:49,962 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-20 11:29:49,964 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:29:50,091 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-20 11:29:50,092 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:29:50,200 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-20 11:29:50,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:29:50,201 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879092977] [2022-11-20 11:29:50,201 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 11:29:50,201 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1198768618] [2022-11-20 11:29:50,201 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1198768618] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:29:50,201 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:29:50,201 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2022-11-20 11:29:50,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786995022] [2022-11-20 11:29:50,205 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:29:50,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 11:29:50,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:29:50,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 11:29:50,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2022-11-20 11:29:50,207 INFO L87 Difference]: Start difference. First operand 58 states and 65 transitions. Second operand has 12 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 12 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) [2022-11-20 11:29:50,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:29:50,449 INFO L93 Difference]: Finished difference Result 104 states and 113 transitions. [2022-11-20 11:29:50,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 11:29:50,450 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 12 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 32 [2022-11-20 11:29:50,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:29:50,451 INFO L225 Difference]: With dead ends: 104 [2022-11-20 11:29:50,451 INFO L226 Difference]: Without dead ends: 62 [2022-11-20 11:29:50,452 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 48 SyntacticMatches, 4 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2022-11-20 11:29:50,452 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 68 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 11:29:50,453 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 60 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 11:29:50,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2022-11-20 11:29:50,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 42. [2022-11-20 11:29:50,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 41 states have (on average 1.1219512195121952) internal successors, (46), 41 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:29:50,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 46 transitions. [2022-11-20 11:29:50,464 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 46 transitions. Word has length 32 [2022-11-20 11:29:50,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:29:50,465 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 46 transitions. [2022-11-20 11:29:50,465 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 12 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) [2022-11-20 11:29:50,465 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 46 transitions. [2022-11-20 11:29:50,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-11-20 11:29:50,466 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:29:50,466 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:29:50,473 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fb4d7e7-a6c1-4955-8b12-930ab79c7f2f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-20 11:29:50,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fb4d7e7-a6c1-4955-8b12-930ab79c7f2f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:29:50,673 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:29:50,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:29:50,674 INFO L85 PathProgramCache]: Analyzing trace with hash -1646708229, now seen corresponding path program 4 times [2022-11-20 11:29:50,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:29:50,674 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43229000] [2022-11-20 11:29:50,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:29:50,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:29:50,696 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 11:29:50,696 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1449593949] [2022-11-20 11:29:50,697 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-20 11:29:50,697 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:29:50,697 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fb4d7e7-a6c1-4955-8b12-930ab79c7f2f/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:29:50,698 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fb4d7e7-a6c1-4955-8b12-930ab79c7f2f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:29:50,715 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fb4d7e7-a6c1-4955-8b12-930ab79c7f2f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-20 11:29:50,958 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-20 11:29:50,958 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:29:50,960 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 57 conjunts are in the unsatisfiable core [2022-11-20 11:29:50,964 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:29:50,971 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-11-20 11:29:51,007 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-20 11:29:51,087 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 50 [2022-11-20 11:29:51,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:29:51,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:29:51,095 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 100 [2022-11-20 11:29:51,104 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-20 11:29:51,205 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:29:51,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:29:51,208 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 31 [2022-11-20 11:29:51,356 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:29:51,358 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:29:51,359 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 41 [2022-11-20 11:29:51,523 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-20 11:29:51,524 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 159 treesize of output 143 [2022-11-20 11:29:51,532 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 11:29:51,534 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:29:51,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:29:51,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:29:51,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:29:51,541 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 123 treesize of output 197 [2022-11-20 11:29:51,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:29:51,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:29:51,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:29:51,593 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 98 treesize of output 42 [2022-11-20 11:29:51,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:29:51,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:29:51,845 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 11:29:51,846 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 11:29:51,847 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:29:51,862 INFO L321 Elim1Store]: treesize reduction 35, result has 16.7 percent of original size [2022-11-20 11:29:51,863 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 11 case distinctions, treesize of input 68 treesize of output 65 [2022-11-20 11:29:52,242 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 5 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:29:52,243 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:29:56,748 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 3 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:29:56,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:29:56,749 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43229000] [2022-11-20 11:29:56,749 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 11:29:56,749 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1449593949] [2022-11-20 11:29:56,749 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1449593949] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:29:56,749 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:29:56,749 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 17] total 31 [2022-11-20 11:29:56,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250779299] [2022-11-20 11:29:56,750 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:29:56,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-11-20 11:29:56,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:29:56,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-11-20 11:29:56,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=764, Unknown=0, NotChecked=0, Total=930 [2022-11-20 11:29:56,752 INFO L87 Difference]: Start difference. First operand 42 states and 46 transitions. Second operand has 31 states, 31 states have (on average 2.032258064516129) internal successors, (63), 31 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:30:09,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:30:09,053 INFO L93 Difference]: Finished difference Result 120 states and 134 transitions. [2022-11-20 11:30:09,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-11-20 11:30:09,054 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 2.032258064516129) internal successors, (63), 31 states have internal predecessors, (63), 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 34 [2022-11-20 11:30:09,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:30:09,056 INFO L225 Difference]: With dead ends: 120 [2022-11-20 11:30:09,056 INFO L226 Difference]: Without dead ends: 118 [2022-11-20 11:30:09,057 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 36 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 674 ImplicationChecksByTransitivity, 12.9s TimeCoverageRelationStatistics Valid=367, Invalid=1985, Unknown=0, NotChecked=0, Total=2352 [2022-11-20 11:30:09,058 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 91 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 342 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 545 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 342 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 153 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-11-20 11:30:09,058 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 131 Invalid, 545 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 342 Invalid, 0 Unknown, 153 Unchecked, 2.9s Time] [2022-11-20 11:30:09,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2022-11-20 11:30:09,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 87. [2022-11-20 11:30:09,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 86 states have (on average 1.1511627906976745) internal successors, (99), 86 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:30:09,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 99 transitions. [2022-11-20 11:30:09,079 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 99 transitions. Word has length 34 [2022-11-20 11:30:09,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:30:09,080 INFO L495 AbstractCegarLoop]: Abstraction has 87 states and 99 transitions. [2022-11-20 11:30:09,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 2.032258064516129) internal successors, (63), 31 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:30:09,080 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 99 transitions. [2022-11-20 11:30:09,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-20 11:30:09,081 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:30:09,081 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:30:09,091 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fb4d7e7-a6c1-4955-8b12-930ab79c7f2f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-20 11:30:09,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fb4d7e7-a6c1-4955-8b12-930ab79c7f2f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-20 11:30:09,288 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:30:09,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:30:09,289 INFO L85 PathProgramCache]: Analyzing trace with hash -187195163, now seen corresponding path program 2 times [2022-11-20 11:30:09,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:30:09,289 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290989962] [2022-11-20 11:30:09,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:30:09,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:30:09,317 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 11:30:09,318 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [361806755] [2022-11-20 11:30:09,318 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 11:30:09,318 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:30:09,318 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fb4d7e7-a6c1-4955-8b12-930ab79c7f2f/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:30:09,319 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fb4d7e7-a6c1-4955-8b12-930ab79c7f2f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:30:09,335 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fb4d7e7-a6c1-4955-8b12-930ab79c7f2f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-20 11:30:09,424 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 11:30:09,424 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:30:09,425 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-20 11:30:09,427 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:30:09,551 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 32 proven. 12 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-20 11:30:09,551 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:30:09,650 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 32 proven. 12 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-20 11:30:09,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:30:09,650 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290989962] [2022-11-20 11:30:09,650 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 11:30:09,650 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [361806755] [2022-11-20 11:30:09,651 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [361806755] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:30:09,651 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:30:09,651 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 15 [2022-11-20 11:30:09,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499914489] [2022-11-20 11:30:09,651 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:30:09,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-20 11:30:09,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:30:09,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-20 11:30:09,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2022-11-20 11:30:09,652 INFO L87 Difference]: Start difference. First operand 87 states and 99 transitions. Second operand has 15 states, 15 states have (on average 3.0) internal successors, (45), 15 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) [2022-11-20 11:30:09,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:30:09,900 INFO L93 Difference]: Finished difference Result 149 states and 162 transitions. [2022-11-20 11:30:09,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-20 11:30:09,901 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.0) internal successors, (45), 15 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) Word has length 36 [2022-11-20 11:30:09,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:30:09,902 INFO L225 Difference]: With dead ends: 149 [2022-11-20 11:30:09,902 INFO L226 Difference]: Without dead ends: 120 [2022-11-20 11:30:09,902 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 52 SyntacticMatches, 5 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=110, Invalid=270, Unknown=0, NotChecked=0, Total=380 [2022-11-20 11:30:09,903 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 107 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 11:30:09,903 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 84 Invalid, 198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 11:30:09,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2022-11-20 11:30:09,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 91. [2022-11-20 11:30:09,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 90 states have (on average 1.1111111111111112) internal successors, (100), 90 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:30:09,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 100 transitions. [2022-11-20 11:30:09,943 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 100 transitions. Word has length 36 [2022-11-20 11:30:09,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:30:09,946 INFO L495 AbstractCegarLoop]: Abstraction has 91 states and 100 transitions. [2022-11-20 11:30:09,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.0) internal successors, (45), 15 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) [2022-11-20 11:30:09,947 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 100 transitions. [2022-11-20 11:30:09,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-11-20 11:30:09,948 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:30:09,948 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:30:09,955 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fb4d7e7-a6c1-4955-8b12-930ab79c7f2f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-20 11:30:10,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fb4d7e7-a6c1-4955-8b12-930ab79c7f2f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-20 11:30:10,154 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:30:10,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:30:10,154 INFO L85 PathProgramCache]: Analyzing trace with hash 1129715953, now seen corresponding path program 5 times [2022-11-20 11:30:10,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:30:10,155 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727029227] [2022-11-20 11:30:10,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:30:10,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:30:10,174 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 11:30:10,175 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1611387433] [2022-11-20 11:30:10,175 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-20 11:30:10,175 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:30:10,175 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fb4d7e7-a6c1-4955-8b12-930ab79c7f2f/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:30:10,176 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fb4d7e7-a6c1-4955-8b12-930ab79c7f2f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:30:10,195 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fb4d7e7-a6c1-4955-8b12-930ab79c7f2f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-20 11:30:10,509 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-11-20 11:30:10,509 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:30:10,512 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 62 conjunts are in the unsatisfiable core [2022-11-20 11:30:10,515 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:30:10,522 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-11-20 11:30:10,547 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-20 11:30:10,624 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 110 treesize of output 99 [2022-11-20 11:30:10,634 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 11:30:10,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:30:10,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:30:10,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:30:10,640 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 98 treesize of output 172 [2022-11-20 11:30:10,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:30:10,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:30:10,684 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 148 treesize of output 76 [2022-11-20 11:30:10,803 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:30:10,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:30:10,807 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 36 [2022-11-20 11:30:10,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:30:10,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:30:10,927 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 46 [2022-11-20 11:30:11,071 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-20 11:30:11,072 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 160 treesize of output 144 [2022-11-20 11:30:11,085 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 11:30:11,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:30:11,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:30:11,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:30:11,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:30:11,092 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 123 treesize of output 197 [2022-11-20 11:30:11,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:30:11,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:30:11,302 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 11:30:11,303 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 11:30:11,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:30:11,317 INFO L321 Elim1Store]: treesize reduction 35, result has 16.7 percent of original size [2022-11-20 11:30:11,317 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 11 case distinctions, treesize of input 69 treesize of output 66 [2022-11-20 11:30:11,801 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 9 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:30:11,801 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:30:23,832 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:30:23,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:30:23,833 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727029227] [2022-11-20 11:30:23,833 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 11:30:23,833 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1611387433] [2022-11-20 11:30:23,833 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1611387433] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:30:23,833 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:30:23,834 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 32 [2022-11-20 11:30:23,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774035086] [2022-11-20 11:30:23,834 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:30:23,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-20 11:30:23,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:30:23,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-20 11:30:23,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=836, Unknown=0, NotChecked=0, Total=992 [2022-11-20 11:30:23,836 INFO L87 Difference]: Start difference. First operand 91 states and 100 transitions. Second operand has 32 states, 32 states have (on average 2.21875) internal successors, (71), 32 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:30:35,810 WARN L233 SmtUtils]: Spent 6.95s on a formula simplification. DAG size of input: 188 DAG size of output: 118 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 11:31:00,216 WARN L233 SmtUtils]: Spent 8.34s on a formula simplification. DAG size of input: 240 DAG size of output: 134 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 11:31:23,883 WARN L233 SmtUtils]: Spent 13.76s on a formula simplification. DAG size of input: 215 DAG size of output: 143 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 11:31:35,144 WARN L859 $PredicateComparison]: unable to prove that (let ((.cse57 (mod |c_ULTIMATE.start_main_~i~0#1| 4294967296))) (let ((.cse37 (+ |c_ULTIMATE.start_main_~i~0#1| 1)) (.cse55 (* .cse57 8)) (.cse56 (mod (+ 4294967295 |c_ULTIMATE.start_main_~i~0#1|) 4294967296))) (let ((.cse53 (* 8 .cse56)) (.cse2 (+ .cse55 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse6 (select |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base|)) (.cse52 (+ .cse55 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse19 (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|)) (.cse54 (* (mod .cse37 4294967296) 8))) (let ((.cse34 (* 8 (mod (+ 2 |c_ULTIMATE.start_main_~i~0#1|) 4294967296))) (.cse32 (<= .cse57 2147483647)) (.cse7 (<= .cse56 2147483647)) (.cse14 (+ .cse54 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse31 (select .cse19 (+ .cse55 |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368)))) (.cse1 (+ .cse54 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse35 (select .cse6 .cse52)) (.cse36 (select .cse19 .cse2)) (.cse15 (select .cse19 (+ |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368) .cse53))) (.cse3 (select .cse6 (+ .cse53 |c_ULTIMATE.start_main_~b~0#1.offset|))) (.cse4 (select .cse19 (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse53)))) (let ((.cse0 (store .cse6 .cse52 (+ .cse3 .cse4))) (.cse13 (store .cse19 .cse2 (+ .cse15 10))) (.cse33 (store .cse6 .cse1 (+ .cse35 .cse36))) (.cse5 (+ 16 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse20 (select .cse19 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse29 (store .cse19 .cse14 (+ .cse31 10))) (.cse25 (not .cse7)) (.cse24 (store .cse19 .cse2 (+ 10 .cse4))) (.cse38 (not .cse32)) (.cse11 (+ 8 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse12 (+ 8 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse42 (store .cse19 .cse14 (+ 10 .cse36))) (.cse30 (+ .cse34 |c_ULTIMATE.start_main_~a~0#1.offset|))) (and (or (= 31 (select (store .cse0 .cse1 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse0) |c_ULTIMATE.start_main_~a~0#1.base|) .cse2) .cse3 .cse4)) .cse5)) (= |c_ULTIMATE.start_main_~i~0#1| 0)) (= (select .cse6 .cse5) 31) (or .cse7 (= (let ((.cse9 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (store .cse13 .cse14 (+ .cse15 20))))) (let ((.cse10 (store (select .cse9 |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset| 1))) (let ((.cse8 (select (select (store .cse9 |c_ULTIMATE.start_main_~b~0#1.base| .cse10) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|))) (+ .cse8 (select (select (store .cse9 |c_ULTIMATE.start_main_~b~0#1.base| (store .cse10 .cse11 (+ .cse8 1))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse12))))) 30)) (= |c_ULTIMATE.start___VERIFIER_assert_~cond#1| 1) (= (select .cse0 .cse5) 31) (or .cse7 (= (let ((.cse16 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse13))) (let ((.cse17 (store (select .cse16 |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset| 1))) (let ((.cse18 (select (select (store .cse16 |c_ULTIMATE.start_main_~b~0#1.base| .cse17) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|))) (+ (select (select (store .cse16 |c_ULTIMATE.start_main_~b~0#1.base| (store .cse17 .cse11 (+ .cse18 1))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse12) .cse18)))) 30)) (= (select .cse19 .cse12) (+ 10 .cse20)) (or (= (let ((.cse21 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse24))) (let ((.cse22 (store (select .cse21 |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset| 1))) (let ((.cse23 (select (select (store .cse21 |c_ULTIMATE.start_main_~b~0#1.base| .cse22) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|))) (+ (select (select (store .cse21 |c_ULTIMATE.start_main_~b~0#1.base| (store .cse22 .cse11 (+ .cse23 1))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse12) .cse23)))) 30) .cse25) (or (= (let ((.cse27 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (store .cse29 .cse30 (+ .cse31 20))))) (let ((.cse28 (store (select .cse27 |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset| 1))) (let ((.cse26 (select (select (store .cse27 |c_ULTIMATE.start_main_~b~0#1.base| .cse28) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|))) (+ .cse26 (select (select (store .cse27 |c_ULTIMATE.start_main_~b~0#1.base| (store .cse28 .cse11 (+ .cse26 1))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse12))))) 30) .cse32) (= (select .cse33 .cse5) 31) (= (select .cse19 (+ 16 |c_ULTIMATE.start_main_~a~0#1.offset|)) (+ 20 .cse20)) (or (= 31 (select (store .cse33 (+ .cse34 |c_ULTIMATE.start_main_~b~0#1.offset|) (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse33) |c_ULTIMATE.start_main_~a~0#1.base|) .cse14) .cse35 .cse36)) .cse5)) (= .cse37 0)) (= 0 |c_ULTIMATE.start_main_~b~0#1.offset|) (or .cse38 (= 30 (let ((.cse40 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse42))) (let ((.cse41 (store (select .cse40 |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset| 1))) (let ((.cse39 (select (select (store .cse40 |c_ULTIMATE.start_main_~b~0#1.base| .cse41) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|))) (+ .cse39 (select (select (store .cse40 |c_ULTIMATE.start_main_~b~0#1.base| (store .cse41 .cse11 (+ .cse39 1))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse12))))))) (= 10 .cse20) (not (= |c_ULTIMATE.start_main_~b~0#1.base| |c_ULTIMATE.start_main_~a~0#1.base|)) (= |c_ULTIMATE.start_main_~a~0#1.offset| 0) (or (= (let ((.cse44 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse29))) (let ((.cse45 (store (select .cse44 |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset| 1))) (let ((.cse43 (select (select (store .cse44 |c_ULTIMATE.start_main_~b~0#1.base| .cse45) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|))) (+ .cse43 (select (select (store .cse44 |c_ULTIMATE.start_main_~b~0#1.base| (store .cse45 .cse11 (+ .cse43 1))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse12))))) 30) .cse32) (or .cse25 (= 30 (let ((.cse46 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (store .cse24 .cse14 (+ 20 .cse4))))) (let ((.cse47 (store (select .cse46 |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset| 1))) (let ((.cse48 (select (select (store .cse46 |c_ULTIMATE.start_main_~b~0#1.base| .cse47) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|))) (+ (select (select (store .cse46 |c_ULTIMATE.start_main_~b~0#1.base| (store .cse47 .cse11 (+ .cse48 1))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse12) .cse48)))))) (or .cse38 (= 30 (let ((.cse49 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (store .cse42 .cse30 (+ 20 .cse36))))) (let ((.cse50 (store (select .cse49 |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset| 1))) (let ((.cse51 (select (select (store .cse49 |c_ULTIMATE.start_main_~b~0#1.base| .cse50) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|))) (+ (select (select (store .cse49 |c_ULTIMATE.start_main_~b~0#1.base| (store .cse50 .cse11 (+ .cse51 1))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse12) .cse51)))))))))))) is different from true [2022-11-20 11:31:47,481 WARN L233 SmtUtils]: Spent 8.89s on a formula simplification. DAG size of input: 191 DAG size of output: 121 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 11:31:52,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:31:52,701 INFO L93 Difference]: Finished difference Result 179 states and 191 transitions. [2022-11-20 11:31:52,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-11-20 11:31:52,703 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 2.21875) internal successors, (71), 32 states have internal predecessors, (71), 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 38 [2022-11-20 11:31:52,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:31:52,704 INFO L225 Difference]: With dead ends: 179 [2022-11-20 11:31:52,704 INFO L226 Difference]: Without dead ends: 155 [2022-11-20 11:31:52,705 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 46 SyntacticMatches, 1 SemanticMatches, 63 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1071 ImplicationChecksByTransitivity, 80.1s TimeCoverageRelationStatistics Valid=773, Invalid=3262, Unknown=1, NotChecked=124, Total=4160 [2022-11-20 11:31:52,705 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 424 mSDsluCounter, 249 mSDsCounter, 0 mSdLazyCounter, 595 mSolverCounterSat, 155 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 424 SdHoareTripleChecker+Valid, 265 SdHoareTripleChecker+Invalid, 790 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 155 IncrementalHoareTripleChecker+Valid, 595 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 40 IncrementalHoareTripleChecker+Unchecked, 18.8s IncrementalHoareTripleChecker+Time [2022-11-20 11:31:52,706 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [424 Valid, 265 Invalid, 790 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [155 Valid, 595 Invalid, 0 Unknown, 40 Unchecked, 18.8s Time] [2022-11-20 11:31:52,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2022-11-20 11:31:52,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 91. [2022-11-20 11:31:52,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 90 states have (on average 1.1333333333333333) internal successors, (102), 90 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:31:52,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 102 transitions. [2022-11-20 11:31:52,731 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 102 transitions. Word has length 38 [2022-11-20 11:31:52,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:31:52,731 INFO L495 AbstractCegarLoop]: Abstraction has 91 states and 102 transitions. [2022-11-20 11:31:52,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 2.21875) internal successors, (71), 32 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:31:52,731 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 102 transitions. [2022-11-20 11:31:52,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-11-20 11:31:52,732 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:31:52,732 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:31:52,748 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fb4d7e7-a6c1-4955-8b12-930ab79c7f2f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-20 11:31:52,948 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fb4d7e7-a6c1-4955-8b12-930ab79c7f2f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-20 11:31:52,948 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:31:52,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:31:52,948 INFO L85 PathProgramCache]: Analyzing trace with hash -1096318795, now seen corresponding path program 3 times [2022-11-20 11:31:52,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:31:52,949 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571945689] [2022-11-20 11:31:52,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:31:52,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:31:52,979 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 11:31:52,980 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1161723758] [2022-11-20 11:31:52,980 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 11:31:52,980 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:31:52,980 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fb4d7e7-a6c1-4955-8b12-930ab79c7f2f/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:31:52,982 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fb4d7e7-a6c1-4955-8b12-930ab79c7f2f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:31:53,015 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fb4d7e7-a6c1-4955-8b12-930ab79c7f2f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-20 11:31:53,836 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-11-20 11:31:53,836 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:31:53,840 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-20 11:31:53,841 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:31:54,026 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 35 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:31:54,027 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:31:54,195 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 35 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:31:54,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:31:54,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571945689] [2022-11-20 11:31:54,195 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 11:31:54,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1161723758] [2022-11-20 11:31:54,196 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1161723758] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:31:54,196 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:31:54,196 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 18 [2022-11-20 11:31:54,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961522566] [2022-11-20 11:31:54,196 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:31:54,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-20 11:31:54,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:31:54,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-20 11:31:54,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=223, Unknown=0, NotChecked=0, Total=306 [2022-11-20 11:31:54,197 INFO L87 Difference]: Start difference. First operand 91 states and 102 transitions. Second operand has 18 states, 18 states have (on average 2.9444444444444446) internal successors, (53), 18 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:31:54,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:31:54,681 INFO L93 Difference]: Finished difference Result 197 states and 212 transitions. [2022-11-20 11:31:54,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-20 11:31:54,682 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.9444444444444446) internal successors, (53), 18 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2022-11-20 11:31:54,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:31:54,683 INFO L225 Difference]: With dead ends: 197 [2022-11-20 11:31:54,683 INFO L226 Difference]: Without dead ends: 170 [2022-11-20 11:31:54,684 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 54 SyntacticMatches, 6 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=203, Invalid=553, Unknown=0, NotChecked=0, Total=756 [2022-11-20 11:31:54,684 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 205 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 11:31:54,685 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [205 Valid, 138 Invalid, 282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 213 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 11:31:54,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2022-11-20 11:31:54,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 119. [2022-11-20 11:31:54,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 118 states have (on average 1.11864406779661) internal successors, (132), 118 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:31:54,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 132 transitions. [2022-11-20 11:31:54,731 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 132 transitions. Word has length 39 [2022-11-20 11:31:54,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:31:54,731 INFO L495 AbstractCegarLoop]: Abstraction has 119 states and 132 transitions. [2022-11-20 11:31:54,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.9444444444444446) internal successors, (53), 18 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:31:54,732 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 132 transitions. [2022-11-20 11:31:54,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-11-20 11:31:54,732 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:31:54,732 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:31:54,739 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fb4d7e7-a6c1-4955-8b12-930ab79c7f2f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-20 11:31:54,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fb4d7e7-a6c1-4955-8b12-930ab79c7f2f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:31:54,939 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:31:54,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:31:54,939 INFO L85 PathProgramCache]: Analyzing trace with hash 173090424, now seen corresponding path program 6 times [2022-11-20 11:31:54,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:31:54,940 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401387179] [2022-11-20 11:31:54,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:31:54,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:31:54,970 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 11:31:54,980 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2103399708] [2022-11-20 11:31:54,981 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-20 11:31:54,981 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:31:54,981 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fb4d7e7-a6c1-4955-8b12-930ab79c7f2f/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:31:54,982 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fb4d7e7-a6c1-4955-8b12-930ab79c7f2f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:31:55,003 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fb4d7e7-a6c1-4955-8b12-930ab79c7f2f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-20 11:31:55,543 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-11-20 11:31:55,543 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:31:55,548 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 65 conjunts are in the unsatisfiable core [2022-11-20 11:31:55,552 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:31:55,575 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-11-20 11:31:55,616 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-20 11:31:55,700 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 50 [2022-11-20 11:31:55,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:31:55,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:31:55,716 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 100 [2022-11-20 11:31:55,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:31:55,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:31:55,739 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 17 [2022-11-20 11:31:55,806 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 50 [2022-11-20 11:31:55,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:31:55,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:31:55,816 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 100 [2022-11-20 11:31:55,839 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-20 11:31:55,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:31:55,942 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-20 11:31:56,014 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2022-11-20 11:31:56,131 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-20 11:31:56,136 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 139 treesize of output 127 [2022-11-20 11:31:56,141 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 11:31:56,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:31:56,144 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:31:56,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:31:56,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:31:56,152 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 120 treesize of output 194 [2022-11-20 11:31:56,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:31:56,194 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:31:56,197 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 160 treesize of output 98 [2022-11-20 11:31:56,338 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-20 11:31:56,339 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 99 treesize of output 91 [2022-11-20 11:31:56,345 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:31:56,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:31:56,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:31:56,349 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 82 treesize of output 157 [2022-11-20 11:31:56,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:31:56,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:31:56,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:31:56,390 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 106 treesize of output 62 [2022-11-20 11:31:56,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:31:56,477 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:31:56,480 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-20 11:31:56,480 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 43 treesize of output 44 [2022-11-20 11:31:56,729 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-20 11:31:56,730 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 52 treesize of output 32 [2022-11-20 11:31:56,751 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:31:56,752 INFO L328 TraceCheckSpWp]: Computing backward predicates...