./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-fpi/eqn2f.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e943c265 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b960972-feb1-4dbd-9078-1fb01f2e92e2/bin/utaipan-9zjyvhn0QE/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b960972-feb1-4dbd-9078-1fb01f2e92e2/bin/utaipan-9zjyvhn0QE/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b960972-feb1-4dbd-9078-1fb01f2e92e2/bin/utaipan-9zjyvhn0QE/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b960972-feb1-4dbd-9078-1fb01f2e92e2/bin/utaipan-9zjyvhn0QE/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-fpi/eqn2f.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b960972-feb1-4dbd-9078-1fb01f2e92e2/bin/utaipan-9zjyvhn0QE/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b960972-feb1-4dbd-9078-1fb01f2e92e2/bin/utaipan-9zjyvhn0QE --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 9492838383a14835fe4416045232ed048098976ee70d4c4f9afc54e7ded61319 ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-e943c26 [2021-10-24 11:06:29,504 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-24 11:06:29,507 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-24 11:06:29,573 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-24 11:06:29,574 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-24 11:06:29,579 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-24 11:06:29,582 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-24 11:06:29,588 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-24 11:06:29,592 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-24 11:06:29,603 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-24 11:06:29,604 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-24 11:06:29,607 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-24 11:06:29,608 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-24 11:06:29,612 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-24 11:06:29,615 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-24 11:06:29,623 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-24 11:06:29,626 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-24 11:06:29,628 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-24 11:06:29,631 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-24 11:06:29,641 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-24 11:06:29,644 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-24 11:06:29,646 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-24 11:06:29,650 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-24 11:06:29,652 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-24 11:06:29,663 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-24 11:06:29,664 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-24 11:06:29,665 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-24 11:06:29,668 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-24 11:06:29,669 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-24 11:06:29,671 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-24 11:06:29,671 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-24 11:06:29,673 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-24 11:06:29,676 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-24 11:06:29,677 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-24 11:06:29,680 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-24 11:06:29,680 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-24 11:06:29,682 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-24 11:06:29,682 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-24 11:06:29,682 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-24 11:06:29,684 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-24 11:06:29,685 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-24 11:06:29,687 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b960972-feb1-4dbd-9078-1fb01f2e92e2/bin/utaipan-9zjyvhn0QE/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-24 11:06:29,739 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-24 11:06:29,739 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-24 11:06:29,741 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-24 11:06:29,741 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-24 11:06:29,741 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-24 11:06:29,742 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-24 11:06:29,742 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-24 11:06:29,742 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-24 11:06:29,742 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-24 11:06:29,743 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-24 11:06:29,743 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-24 11:06:29,743 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-24 11:06:29,744 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-24 11:06:29,744 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-24 11:06:29,744 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-24 11:06:29,745 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-24 11:06:29,746 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-24 11:06:29,746 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-24 11:06:29,746 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-24 11:06:29,747 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-24 11:06:29,747 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-24 11:06:29,747 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-24 11:06:29,747 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-24 11:06:29,748 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-24 11:06:29,748 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-24 11:06:29,748 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-24 11:06:29,749 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-24 11:06:29,749 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-24 11:06:29,749 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-24 11:06:29,750 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-24 11:06:29,750 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 11:06:29,750 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-24 11:06:29,751 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-24 11:06:29,751 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-24 11:06:29,751 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-24 11:06:29,752 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-24 11:06:29,752 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-24 11:06:29,752 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-24 11:06:29,753 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-24 11:06:29,753 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_9b960972-feb1-4dbd-9078-1fb01f2e92e2/bin/utaipan-9zjyvhn0QE/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b960972-feb1-4dbd-9078-1fb01f2e92e2/bin/utaipan-9zjyvhn0QE Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9492838383a14835fe4416045232ed048098976ee70d4c4f9afc54e7ded61319 [2021-10-24 11:06:30,070 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-24 11:06:30,102 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-24 11:06:30,106 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-24 11:06:30,108 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-24 11:06:30,109 INFO L275 PluginConnector]: CDTParser initialized [2021-10-24 11:06:30,110 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b960972-feb1-4dbd-9078-1fb01f2e92e2/bin/utaipan-9zjyvhn0QE/../../sv-benchmarks/c/array-fpi/eqn2f.c [2021-10-24 11:06:30,197 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b960972-feb1-4dbd-9078-1fb01f2e92e2/bin/utaipan-9zjyvhn0QE/data/f41a6903d/3e11c6f67db64a0caeb1103861a39ef4/FLAG330d205c5 [2021-10-24 11:06:30,894 INFO L306 CDTParser]: Found 1 translation units. [2021-10-24 11:06:30,898 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b960972-feb1-4dbd-9078-1fb01f2e92e2/sv-benchmarks/c/array-fpi/eqn2f.c [2021-10-24 11:06:30,911 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b960972-feb1-4dbd-9078-1fb01f2e92e2/bin/utaipan-9zjyvhn0QE/data/f41a6903d/3e11c6f67db64a0caeb1103861a39ef4/FLAG330d205c5 [2021-10-24 11:06:31,238 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b960972-feb1-4dbd-9078-1fb01f2e92e2/bin/utaipan-9zjyvhn0QE/data/f41a6903d/3e11c6f67db64a0caeb1103861a39ef4 [2021-10-24 11:06:31,242 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-24 11:06:31,244 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-24 11:06:31,256 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-24 11:06:31,256 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-24 11:06:31,260 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-24 11:06:31,261 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 11:06:31" (1/1) ... [2021-10-24 11:06:31,263 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79216efd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:06:31, skipping insertion in model container [2021-10-24 11:06:31,263 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 11:06:31" (1/1) ... [2021-10-24 11:06:31,272 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-24 11:06:31,291 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-24 11:06:31,506 WARN L228 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_9b960972-feb1-4dbd-9078-1fb01f2e92e2/sv-benchmarks/c/array-fpi/eqn2f.c[588,601] [2021-10-24 11:06:31,533 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 11:06:31,544 INFO L203 MainTranslator]: Completed pre-run [2021-10-24 11:06:31,560 WARN L228 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_9b960972-feb1-4dbd-9078-1fb01f2e92e2/sv-benchmarks/c/array-fpi/eqn2f.c[588,601] [2021-10-24 11:06:31,570 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 11:06:31,587 INFO L208 MainTranslator]: Completed translation [2021-10-24 11:06:31,588 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:06:31 WrapperNode [2021-10-24 11:06:31,588 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-24 11:06:31,589 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-24 11:06:31,589 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-24 11:06:31,589 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-24 11:06:31,598 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:06:31" (1/1) ... [2021-10-24 11:06:31,607 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:06:31" (1/1) ... [2021-10-24 11:06:31,633 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-24 11:06:31,635 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-24 11:06:31,635 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-24 11:06:31,635 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-24 11:06:31,645 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:06:31" (1/1) ... [2021-10-24 11:06:31,646 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:06:31" (1/1) ... [2021-10-24 11:06:31,649 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:06:31" (1/1) ... [2021-10-24 11:06:31,649 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:06:31" (1/1) ... [2021-10-24 11:06:31,657 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:06:31" (1/1) ... [2021-10-24 11:06:31,662 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:06:31" (1/1) ... [2021-10-24 11:06:31,664 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:06:31" (1/1) ... [2021-10-24 11:06:31,667 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-24 11:06:31,668 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-24 11:06:31,669 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-24 11:06:31,669 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-24 11:06:31,670 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:06:31" (1/1) ... [2021-10-24 11:06:31,680 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 11:06:31,703 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b960972-feb1-4dbd-9078-1fb01f2e92e2/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 11:06:31,718 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b960972-feb1-4dbd-9078-1fb01f2e92e2/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-24 11:06:31,723 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b960972-feb1-4dbd-9078-1fb01f2e92e2/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-24 11:06:31,779 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-24 11:06:31,780 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-24 11:06:31,782 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-24 11:06:31,782 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-24 11:06:31,782 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-24 11:06:31,783 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-24 11:06:31,783 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-24 11:06:32,270 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-24 11:06:32,271 INFO L299 CfgBuilder]: Removed 11 assume(true) statements. [2021-10-24 11:06:32,273 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:06:32 BoogieIcfgContainer [2021-10-24 11:06:32,274 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-24 11:06:32,275 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-24 11:06:32,276 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-24 11:06:32,291 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-24 11:06:32,291 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 11:06:31" (1/3) ... [2021-10-24 11:06:32,292 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e3df852 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 11:06:32, skipping insertion in model container [2021-10-24 11:06:32,292 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:06:31" (2/3) ... [2021-10-24 11:06:32,293 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e3df852 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 11:06:32, skipping insertion in model container [2021-10-24 11:06:32,293 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:06:32" (3/3) ... [2021-10-24 11:06:32,294 INFO L111 eAbstractionObserver]: Analyzing ICFG eqn2f.c [2021-10-24 11:06:32,301 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-24 11:06:32,301 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-24 11:06:32,403 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-24 11:06:32,412 INFO L339 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=FINITE_AUTOMATA, 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, mLoopAccelerationTechnique=FAST_UPR [2021-10-24 11:06:32,414 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-24 11:06:32,433 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 10 states have internal predecessors, (15), 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) [2021-10-24 11:06:32,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-24 11:06:32,447 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 11:06:32,448 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-24 11:06:32,449 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 11:06:32,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 11:06:32,468 INFO L82 PathProgramCache]: Analyzing trace with hash -735732333, now seen corresponding path program 1 times [2021-10-24 11:06:32,480 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 11:06:32,482 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557026022] [2021-10-24 11:06:32,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 11:06:32,484 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 11:06:32,656 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-24 11:06:32,658 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [861166729] [2021-10-24 11:06:32,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 11:06:32,659 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 11:06:32,659 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b960972-feb1-4dbd-9078-1fb01f2e92e2/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 11:06:32,661 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b960972-feb1-4dbd-9078-1fb01f2e92e2/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-24 11:06:32,683 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b960972-feb1-4dbd-9078-1fb01f2e92e2/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-24 11:06:32,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 11:06:32,777 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-24 11:06:32,783 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 11:06:32,897 INFO L354 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2021-10-24 11:06:32,941 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 27 treesize of output 23 [2021-10-24 11:06:33,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 11:06:33,143 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 11:06:33,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 11:06:33,293 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 11:06:33,293 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557026022] [2021-10-24 11:06:33,294 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-24 11:06:33,294 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [861166729] [2021-10-24 11:06:33,295 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [861166729] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 11:06:33,295 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 11:06:33,295 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2021-10-24 11:06:33,297 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720886318] [2021-10-24 11:06:33,303 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-24 11:06:33,303 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 11:06:33,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-24 11:06:33,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-24 11:06:33,339 INFO L87 Difference]: Start difference. First operand has 11 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 10 states have internal predecessors, (15), 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 7 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 11:06:33,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 11:06:33,501 INFO L93 Difference]: Finished difference Result 35 states and 44 transitions. [2021-10-24 11:06:33,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-24 11:06:33,503 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-10-24 11:06:33,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 11:06:33,513 INFO L225 Difference]: With dead ends: 35 [2021-10-24 11:06:33,514 INFO L226 Difference]: Without dead ends: 20 [2021-10-24 11:06:33,517 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 91.2ms TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-10-24 11:06:33,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2021-10-24 11:06:33,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 13. [2021-10-24 11:06:33,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 12 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 11:06:33,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 17 transitions. [2021-10-24 11:06:33,560 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 17 transitions. Word has length 7 [2021-10-24 11:06:33,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 11:06:33,561 INFO L470 AbstractCegarLoop]: Abstraction has 13 states and 17 transitions. [2021-10-24 11:06:33,562 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 11:06:33,563 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 17 transitions. [2021-10-24 11:06:33,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-24 11:06:33,564 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 11:06:33,564 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 11:06:33,595 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b960972-feb1-4dbd-9078-1fb01f2e92e2/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-24 11:06:33,777 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b960972-feb1-4dbd-9078-1fb01f2e92e2/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-10-24 11:06:33,778 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 11:06:33,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 11:06:33,781 INFO L82 PathProgramCache]: Analyzing trace with hash -1337635293, now seen corresponding path program 1 times [2021-10-24 11:06:33,782 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 11:06:33,784 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001564861] [2021-10-24 11:06:33,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 11:06:33,784 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 11:06:33,839 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-24 11:06:33,840 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2059248232] [2021-10-24 11:06:33,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 11:06:33,840 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 11:06:33,841 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b960972-feb1-4dbd-9078-1fb01f2e92e2/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 11:06:33,842 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b960972-feb1-4dbd-9078-1fb01f2e92e2/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-24 11:06:33,863 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b960972-feb1-4dbd-9078-1fb01f2e92e2/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-24 11:06:33,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 11:06:33,915 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-24 11:06:33,917 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 11:06:33,971 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 11:06:33,971 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 11:06:34,023 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 11:06:34,024 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 11:06:34,024 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001564861] [2021-10-24 11:06:34,025 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-24 11:06:34,026 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2059248232] [2021-10-24 11:06:34,027 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2059248232] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 11:06:34,028 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 11:06:34,030 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-10-24 11:06:34,030 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294651583] [2021-10-24 11:06:34,032 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-24 11:06:34,032 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 11:06:34,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-24 11:06:34,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-24 11:06:34,034 INFO L87 Difference]: Start difference. First operand 13 states and 17 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 11:06:34,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 11:06:34,114 INFO L93 Difference]: Finished difference Result 25 states and 31 transitions. [2021-10-24 11:06:34,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-24 11:06:34,119 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-10-24 11:06:34,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 11:06:34,120 INFO L225 Difference]: With dead ends: 25 [2021-10-24 11:06:34,120 INFO L226 Difference]: Without dead ends: 19 [2021-10-24 11:06:34,121 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 22.7ms TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-24 11:06:34,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-10-24 11:06:34,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 13. [2021-10-24 11:06:34,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 12 states have internal predecessors, (16), 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) [2021-10-24 11:06:34,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 16 transitions. [2021-10-24 11:06:34,126 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 16 transitions. Word has length 8 [2021-10-24 11:06:34,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 11:06:34,126 INFO L470 AbstractCegarLoop]: Abstraction has 13 states and 16 transitions. [2021-10-24 11:06:34,127 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 11:06:34,127 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 16 transitions. [2021-10-24 11:06:34,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-24 11:06:34,128 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 11:06:34,128 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 11:06:34,173 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b960972-feb1-4dbd-9078-1fb01f2e92e2/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-24 11:06:34,343 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b960972-feb1-4dbd-9078-1fb01f2e92e2/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-10-24 11:06:34,344 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 11:06:34,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 11:06:34,345 INFO L82 PathProgramCache]: Analyzing trace with hash -1611921030, now seen corresponding path program 1 times [2021-10-24 11:06:34,345 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 11:06:34,346 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208225061] [2021-10-24 11:06:34,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 11:06:34,346 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 11:06:34,391 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-24 11:06:34,392 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [93539487] [2021-10-24 11:06:34,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 11:06:34,392 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 11:06:34,393 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b960972-feb1-4dbd-9078-1fb01f2e92e2/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 11:06:34,394 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b960972-feb1-4dbd-9078-1fb01f2e92e2/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-24 11:06:34,434 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b960972-feb1-4dbd-9078-1fb01f2e92e2/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-24 11:06:34,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 11:06:34,519 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-24 11:06:34,521 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 11:06:34,598 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 11:06:34,599 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 11:06:34,654 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 11:06:34,655 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 11:06:34,655 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208225061] [2021-10-24 11:06:34,655 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-24 11:06:34,658 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [93539487] [2021-10-24 11:06:34,659 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [93539487] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-24 11:06:34,659 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [346863525] [2021-10-24 11:06:34,700 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-10-24 11:06:34,700 INFO L166 IcfgInterpreter]: Building call graph [2021-10-24 11:06:34,713 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-24 11:06:34,726 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-24 11:06:34,727 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-24 11:06:34,783 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:06:34,786 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 11:06:34,787 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:06:34,788 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-10-24 11:06:34,793 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 11:06:34,794 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:06:34,795 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-10-24 11:06:34,799 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 127 [2021-10-24 11:06:34,817 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_19|], 21=[|v_#valid_20|]} [2021-10-24 11:06:34,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:06:34,830 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:06:34,832 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:06:34,834 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 9 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2021-10-24 11:06:34,836 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:06:34,837 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-24 11:06:34,840 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:06:34,841 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-24 11:06:34,841 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-24 11:06:34,844 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:06:34,876 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:06:34,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:06:34,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:06:34,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:06:34,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:06:34,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:06:34,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:06:34,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:06:34,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:06:34,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:06:34,906 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 31 treesize of output 30 [2021-10-24 11:06:34,907 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:06:34,911 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-10-24 11:06:34,912 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:06:34,913 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-10-24 11:06:34,914 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-10-24 11:06:34,914 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:06:34,934 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:06:34,937 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:06:34,939 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 99 [2021-10-24 11:06:34,940 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-24 11:06:34,941 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:124, output treesize:99 [2021-10-24 11:06:34,975 INFO L180 QuantifierPusher]: treesize reduction 6, result has 97.2 percent of original size [2021-10-24 11:06:34,978 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 11:06:34,979 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:06:34,980 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-10-24 11:06:34,982 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 11:06:34,983 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:06:34,984 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-10-24 11:06:34,986 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 11:06:34,987 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:06:34,988 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-10-24 11:06:34,994 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 211 [2021-10-24 11:06:35,006 INFO L446 ElimStorePlain]: Different costs {9=[|v_#length_20|], 28=[|v_#valid_21|]} [2021-10-24 11:06:35,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:06:35,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:06:35,047 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:06:35,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:06:35,052 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:06:35,055 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:06:35,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:06:35,129 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-10-24 11:06:35,130 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 12 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 29 treesize of output 39 [2021-10-24 11:06:35,131 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:06:35,137 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-10-24 11:06:35,139 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:06:35,141 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-10-24 11:06:35,142 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-24 11:06:35,165 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-24 11:06:35,167 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:06:35,169 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-24 11:06:35,170 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:06:35,171 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-24 11:06:35,171 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-10-24 11:06:35,173 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:06:35,234 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:06:35,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:06:35,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:06:35,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:06:35,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:06:35,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:06:35,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:06:35,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:06:35,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:06:35,302 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:06:35,336 INFO L354 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2021-10-24 11:06:35,337 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 14 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 3 case distinctions, treesize of input 44 treesize of output 53 [2021-10-24 11:06:35,339 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:06:35,349 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-10-24 11:06:35,349 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:06:35,351 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-10-24 11:06:35,351 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-10-24 11:06:35,353 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:06:35,369 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:06:35,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:06:35,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:06:35,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:06:35,394 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 8 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 37 [2021-10-24 11:06:35,395 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:06:35,398 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-10-24 11:06:35,399 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:06:35,400 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-10-24 11:06:35,400 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-10-24 11:06:35,401 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:06:35,429 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:06:35,440 INFO L180 QuantifierPusher]: treesize reduction 3, result has 98.3 percent of original size [2021-10-24 11:06:35,449 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 172 [2021-10-24 11:06:35,450 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-10-24 11:06:35,451 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 3 variables, input treesize:392, output treesize:172 [2021-10-24 11:06:35,464 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:06:35,469 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 11:06:35,470 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:06:35,471 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 58 [2021-10-24 11:06:35,480 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 208 [2021-10-24 11:06:35,502 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-24 11:06:35,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:06:35,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:06:35,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:06:35,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:06:35,511 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 62 [2021-10-24 11:06:35,512 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:06:35,517 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-10-24 11:06:35,518 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:06:35,519 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-10-24 11:06:35,520 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-24 11:06:35,520 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:06:35,537 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:06:35,547 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:06:35,556 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 207 [2021-10-24 11:06:35,557 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-10-24 11:06:35,558 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:206, output treesize:207 [2021-10-24 11:06:35,564 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:06:35,603 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:06:35,652 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:06:35,730 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:06:35,753 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 11:06:35,762 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:06:35,765 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 11:06:35,766 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:06:35,767 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 58 [2021-10-24 11:06:35,769 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 11:06:35,770 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:06:35,771 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 86 [2021-10-24 11:06:35,780 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 440 [2021-10-24 11:06:35,783 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 11:06:35,792 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:06:35,800 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 410 [2021-10-24 11:06:35,811 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 489 [2021-10-24 11:06:35,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:06:35,848 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:06:35,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:06:35,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:06:35,852 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:06:35,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:06:35,862 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:06:35,882 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 11 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 86 treesize of output 79 [2021-10-24 11:06:35,883 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:06:35,888 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 84 [2021-10-24 11:06:35,890 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:06:35,891 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 84 [2021-10-24 11:06:35,892 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-24 11:06:35,938 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-24 11:06:35,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:06:35,941 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:06:35,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:06:35,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:06:35,947 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 62 [2021-10-24 11:06:35,949 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:06:35,953 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-10-24 11:06:35,955 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:06:35,955 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-10-24 11:06:35,956 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-10-24 11:06:35,957 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:06:36,038 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:06:36,077 INFO L180 QuantifierPusher]: treesize reduction 133, result has 77.4 percent of original size [2021-10-24 11:06:36,087 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 456 [2021-10-24 11:06:36,089 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2021-10-24 11:06:36,089 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:590, output treesize:456 [2021-10-24 11:06:36,100 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:06:36,202 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:06:36,205 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:06:36,208 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:06:36,211 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:06:36,238 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:06:36,253 INFO L180 QuantifierPusher]: treesize reduction 48, result has 64.4 percent of original size [2021-10-24 11:06:36,259 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 11:06:36,260 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:06:36,260 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-10-24 11:06:36,262 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 85 [2021-10-24 11:06:36,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:06:36,277 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 27 treesize of output 27 [2021-10-24 11:06:36,278 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:06:36,280 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-10-24 11:06:36,281 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:06:36,282 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-10-24 11:06:36,282 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-24 11:06:36,287 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:06:36,291 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:06:36,293 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:06:36,294 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 80 [2021-10-24 11:06:36,295 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-10-24 11:06:36,295 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:84, output treesize:80 [2021-10-24 11:06:36,303 INFO L180 QuantifierPusher]: treesize reduction 49, result has 54.6 percent of original size [2021-10-24 11:06:36,308 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-10-24 11:06:36,314 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:06:36,321 INFO L185 QuantifierPusher]: treesize reduction 4, result has 92.9 percent of original size 52 [2021-10-24 11:06:36,332 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-24 11:06:36,985 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-24 11:06:36,985 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-24 11:06:36,985 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2021-10-24 11:06:36,986 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084315598] [2021-10-24 11:06:36,986 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-24 11:06:36,986 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 11:06:36,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-24 11:06:36,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2021-10-24 11:06:36,987 INFO L87 Difference]: Start difference. First operand 13 states and 16 transitions. Second operand has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 11:06:37,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 11:06:37,092 INFO L93 Difference]: Finished difference Result 29 states and 33 transitions. [2021-10-24 11:06:37,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-24 11:06:37,092 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-10-24 11:06:37,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 11:06:37,093 INFO L225 Difference]: With dead ends: 29 [2021-10-24 11:06:37,093 INFO L226 Difference]: Without dead ends: 24 [2021-10-24 11:06:37,094 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 709.5ms TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2021-10-24 11:06:37,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2021-10-24 11:06:37,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 14. [2021-10-24 11:06:37,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 13 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 11:06:37,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 17 transitions. [2021-10-24 11:06:37,098 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 17 transitions. Word has length 8 [2021-10-24 11:06:37,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 11:06:37,098 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 17 transitions. [2021-10-24 11:06:37,098 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 11:06:37,099 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 17 transitions. [2021-10-24 11:06:37,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-24 11:06:37,104 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 11:06:37,105 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 11:06:37,138 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b960972-feb1-4dbd-9078-1fb01f2e92e2/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-24 11:06:37,315 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b960972-feb1-4dbd-9078-1fb01f2e92e2/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 11:06:37,316 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 11:06:37,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 11:06:37,317 INFO L82 PathProgramCache]: Analyzing trace with hash 1565286172, now seen corresponding path program 1 times [2021-10-24 11:06:37,317 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 11:06:37,317 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344532130] [2021-10-24 11:06:37,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 11:06:37,317 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 11:06:37,338 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-24 11:06:37,338 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [969868435] [2021-10-24 11:06:37,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 11:06:37,338 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 11:06:37,339 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b960972-feb1-4dbd-9078-1fb01f2e92e2/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 11:06:37,339 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b960972-feb1-4dbd-9078-1fb01f2e92e2/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-24 11:06:37,367 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b960972-feb1-4dbd-9078-1fb01f2e92e2/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-10-24 11:06:37,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 11:06:37,454 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-24 11:06:37,456 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 11:06:37,498 INFO L354 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2021-10-24 11:06:37,498 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 27 treesize of output 23 [2021-10-24 11:06:37,515 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-10-24 11:06:37,576 INFO L354 Elim1Store]: treesize reduction 74, result has 26.0 percent of original size [2021-10-24 11:06:37,577 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 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 41 treesize of output 52 [2021-10-24 11:06:37,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:06:37,814 INFO L354 Elim1Store]: treesize reduction 204, result has 13.2 percent of original size [2021-10-24 11:06:37,815 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 70 treesize of output 70 [2021-10-24 11:06:38,306 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 11:06:38,307 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 11:06:47,239 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 11:06:47,239 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 11:06:47,239 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344532130] [2021-10-24 11:06:47,239 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-24 11:06:47,239 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [969868435] [2021-10-24 11:06:47,240 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [969868435] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-24 11:06:47,240 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1204785600] [2021-10-24 11:06:47,242 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-10-24 11:06:47,243 INFO L166 IcfgInterpreter]: Building call graph [2021-10-24 11:06:47,243 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-24 11:06:47,243 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-24 11:06:47,244 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-24 11:06:47,250 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:06:47,251 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 11:06:47,252 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:06:47,253 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-10-24 11:06:47,253 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 11:06:47,254 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:06:47,255 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-10-24 11:06:47,257 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 127 [2021-10-24 11:06:47,260 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_22|], 21=[|v_#valid_24|]} [2021-10-24 11:06:47,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:06:47,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:06:47,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:06:47,271 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 9 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2021-10-24 11:06:47,272 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:06:47,273 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-24 11:06:47,273 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:06:47,274 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-24 11:06:47,274 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-24 11:06:47,275 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:06:47,281 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:06:47,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:06:47,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:06:47,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:06:47,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:06:47,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:06:47,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:06:47,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:06:47,297 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:06:47,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:06:47,301 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 31 treesize of output 30 [2021-10-24 11:06:47,302 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:06:47,304 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-10-24 11:06:47,305 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:06:47,305 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-10-24 11:06:47,306 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-10-24 11:06:47,306 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:06:47,311 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:06:47,312 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:06:47,314 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 99 [2021-10-24 11:06:47,315 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-24 11:06:47,315 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:124, output treesize:99 [2021-10-24 11:06:47,323 INFO L180 QuantifierPusher]: treesize reduction 6, result has 97.2 percent of original size [2021-10-24 11:06:47,324 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 11:06:47,325 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:06:47,326 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-10-24 11:06:47,326 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 11:06:47,327 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:06:47,328 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-10-24 11:06:47,328 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 11:06:47,329 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:06:47,329 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-10-24 11:06:47,333 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 211 [2021-10-24 11:06:47,339 INFO L446 ElimStorePlain]: Different costs {9=[|v_#length_23|], 28=[|v_#valid_25|]} [2021-10-24 11:06:47,354 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:06:47,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:06:47,358 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:06:47,359 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:06:47,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:06:47,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:06:47,364 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:06:47,389 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-10-24 11:06:47,390 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 12 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 29 treesize of output 39 [2021-10-24 11:06:47,391 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:06:47,393 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-10-24 11:06:47,394 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:06:47,395 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-10-24 11:06:47,395 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-24 11:06:47,405 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-24 11:06:47,406 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:06:47,406 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-24 11:06:47,407 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:06:47,407 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-24 11:06:47,407 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-10-24 11:06:47,408 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:06:47,418 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:06:47,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:06:47,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:06:47,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:06:47,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:06:47,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:06:47,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:06:47,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:06:47,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:06:47,447 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:06:47,469 INFO L354 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2021-10-24 11:06:47,469 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 14 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 3 case distinctions, treesize of input 44 treesize of output 53 [2021-10-24 11:06:47,471 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:06:47,491 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-10-24 11:06:47,492 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:06:47,493 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-10-24 11:06:47,494 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-10-24 11:06:47,494 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:06:47,505 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:06:47,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:06:47,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:06:47,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:06:47,524 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 8 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 37 [2021-10-24 11:06:47,525 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:06:47,527 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-10-24 11:06:47,528 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:06:47,529 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-10-24 11:06:47,529 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-10-24 11:06:47,530 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:06:47,540 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:06:47,545 INFO L180 QuantifierPusher]: treesize reduction 3, result has 98.3 percent of original size [2021-10-24 11:06:47,550 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 172 [2021-10-24 11:06:47,551 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-10-24 11:06:47,551 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 3 variables, input treesize:392, output treesize:172 [2021-10-24 11:06:47,557 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:06:47,560 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 11:06:47,561 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:06:47,561 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 50 [2021-10-24 11:06:47,567 INFO L185 QuantifierPusher]: treesize reduction 3, result has 98.5 percent of original size 193 [2021-10-24 11:06:47,583 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:06:47,584 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:06:47,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:06:47,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:06:47,588 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 8 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 54 [2021-10-24 11:06:47,589 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:06:47,592 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-10-24 11:06:47,593 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:06:47,594 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-10-24 11:06:47,594 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-24 11:06:47,595 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:06:47,606 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:06:47,611 INFO L180 QuantifierPusher]: treesize reduction 3, result has 98.4 percent of original size [2021-10-24 11:06:47,615 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 187 [2021-10-24 11:06:47,616 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-10-24 11:06:47,617 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:194, output treesize:187 [2021-10-24 11:06:47,621 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:06:47,646 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:06:47,673 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:06:47,728 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:06:47,746 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 11:06:47,754 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:06:47,755 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 11:06:47,756 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:06:47,757 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 58 [2021-10-24 11:06:47,758 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 11:06:47,759 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:06:47,760 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 73 [2021-10-24 11:06:47,768 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 422 [2021-10-24 11:06:47,769 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 11:06:47,776 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:06:47,783 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 392 [2021-10-24 11:06:47,793 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 471 [2021-10-24 11:06:47,818 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-24 11:06:47,819 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:06:47,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:06:47,822 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:06:47,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:06:47,824 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-24 11:06:47,829 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:06:47,840 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 62 [2021-10-24 11:06:47,841 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:06:47,844 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-10-24 11:06:47,845 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:06:47,846 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-10-24 11:06:47,846 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-24 11:06:47,864 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-24 11:06:47,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:06:47,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:06:47,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:06:47,869 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:06:47,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:06:47,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:06:47,874 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 73 treesize of output 74 [2021-10-24 11:06:47,875 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:06:47,877 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 55 [2021-10-24 11:06:47,878 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:06:47,879 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 55 [2021-10-24 11:06:47,879 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-10-24 11:06:47,880 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:06:47,933 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:06:47,957 INFO L180 QuantifierPusher]: treesize reduction 126, result has 77.3 percent of original size [2021-10-24 11:06:47,965 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 429 [2021-10-24 11:06:47,967 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2021-10-24 11:06:47,968 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:572, output treesize:429 [2021-10-24 11:06:47,976 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:06:48,050 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:06:48,052 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:06:48,054 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:06:48,057 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:06:48,059 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:06:48,068 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:06:48,081 INFO L180 QuantifierPusher]: treesize reduction 48, result has 64.4 percent of original size [2021-10-24 11:06:48,084 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 11:06:48,085 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:06:48,085 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-10-24 11:06:48,087 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 85 [2021-10-24 11:06:48,096 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:06:48,097 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 27 treesize of output 27 [2021-10-24 11:06:48,097 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:06:48,100 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-10-24 11:06:48,101 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:06:48,101 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-10-24 11:06:48,102 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-24 11:06:48,102 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:06:48,107 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:06:48,108 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:06:48,110 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 80 [2021-10-24 11:06:48,111 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-10-24 11:06:48,111 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:84, output treesize:80 [2021-10-24 11:06:48,119 INFO L180 QuantifierPusher]: treesize reduction 49, result has 54.6 percent of original size [2021-10-24 11:06:48,125 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-10-24 11:06:48,129 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:06:48,131 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 11:06:48,131 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:06:48,132 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-10-24 11:06:48,133 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 96 [2021-10-24 11:06:48,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:06:48,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:06:48,148 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-24 11:06:48,153 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-10-24 11:06:48,153 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 36 treesize of output 39 [2021-10-24 11:06:48,154 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:06:48,157 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-10-24 11:06:48,158 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:06:48,158 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-10-24 11:06:48,159 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-24 11:06:48,159 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:06:48,163 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:06:48,164 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:06:48,166 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 93 [2021-10-24 11:06:48,167 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-10-24 11:06:48,167 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:95, output treesize:93 [2021-10-24 11:06:48,170 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:06:48,177 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:06:48,186 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:06:48,222 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:06:48,230 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 11:06:48,232 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:06:48,233 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 11:06:48,233 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:06:48,234 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-10-24 11:06:48,237 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 11:06:48,237 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:06:48,238 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 69 [2021-10-24 11:06:48,241 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 209 [2021-10-24 11:06:48,241 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 11:06:48,243 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:06:48,246 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 171 [2021-10-24 11:06:48,249 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 235 [2021-10-24 11:06:48,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:06:48,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:06:48,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:06:48,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:06:48,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:06:48,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:06:48,289 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-24 11:06:48,290 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-24 11:06:48,298 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-10-24 11:06:48,298 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 69 treesize of output 68 [2021-10-24 11:06:48,299 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:06:48,301 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 67 [2021-10-24 11:06:48,302 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:06:48,302 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 67 [2021-10-24 11:06:48,303 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-24 11:06:48,313 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:06:48,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:06:48,316 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-24 11:06:48,321 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-10-24 11:06:48,325 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 36 treesize of output 39 [2021-10-24 11:06:48,326 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:06:48,327 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-10-24 11:06:48,328 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:06:48,328 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-10-24 11:06:48,329 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-10-24 11:06:48,329 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:06:48,349 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:06:48,356 INFO L180 QuantifierPusher]: treesize reduction 115, result has 64.7 percent of original size [2021-10-24 11:06:48,359 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 211 [2021-10-24 11:06:48,360 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2021-10-24 11:06:48,360 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:330, output treesize:211 [2021-10-24 11:06:48,364 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:06:48,394 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:06:48,396 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:06:48,398 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:06:48,400 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:06:48,406 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:06:48,422 INFO L180 QuantifierPusher]: treesize reduction 48, result has 66.7 percent of original size [2021-10-24 11:06:48,424 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 11:06:48,424 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:06:48,425 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-10-24 11:06:48,426 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 94 [2021-10-24 11:06:48,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:06:48,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:06:48,437 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-24 11:06:48,441 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-10-24 11:06:48,442 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 36 treesize of output 39 [2021-10-24 11:06:48,443 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:06:48,445 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-10-24 11:06:48,446 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:06:48,446 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-10-24 11:06:48,446 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-24 11:06:48,447 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:06:48,450 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:06:48,452 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:06:48,453 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 89 [2021-10-24 11:06:48,454 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-10-24 11:06:48,454 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:93, output treesize:89 [2021-10-24 11:06:48,461 INFO L180 QuantifierPusher]: treesize reduction 49, result has 54.6 percent of original size [2021-10-24 11:06:48,464 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-10-24 11:06:48,470 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-24 11:06:49,236 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-24 11:06:49,236 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-24 11:06:49,236 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 12 [2021-10-24 11:06:49,237 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257814823] [2021-10-24 11:06:49,237 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-24 11:06:49,237 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 11:06:49,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-24 11:06:49,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=218, Unknown=7, NotChecked=0, Total=272 [2021-10-24 11:06:49,238 INFO L87 Difference]: Start difference. First operand 14 states and 17 transitions. Second operand has 12 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 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) [2021-10-24 11:07:16,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 11:07:16,771 INFO L93 Difference]: Finished difference Result 68 states and 79 transitions. [2021-10-24 11:07:16,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-10-24 11:07:16,772 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-10-24 11:07:16,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 11:07:16,774 INFO L225 Difference]: With dead ends: 68 [2021-10-24 11:07:16,775 INFO L226 Difference]: Without dead ends: 66 [2021-10-24 11:07:16,776 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 6 SyntacticMatches, 4 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 258 ImplicationChecksByTransitivity, 30658.8ms TimeCoverageRelationStatistics Valid=207, Invalid=966, Unknown=17, NotChecked=0, Total=1190 [2021-10-24 11:07:16,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2021-10-24 11:07:16,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 21. [2021-10-24 11:07:16,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 20 states have (on average 1.45) internal successors, (29), 20 states have internal predecessors, (29), 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) [2021-10-24 11:07:16,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 29 transitions. [2021-10-24 11:07:16,785 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 29 transitions. Word has length 9 [2021-10-24 11:07:16,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 11:07:16,786 INFO L470 AbstractCegarLoop]: Abstraction has 21 states and 29 transitions. [2021-10-24 11:07:16,786 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 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) [2021-10-24 11:07:16,786 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 29 transitions. [2021-10-24 11:07:16,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-24 11:07:16,787 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 11:07:16,787 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 11:07:16,829 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b960972-feb1-4dbd-9078-1fb01f2e92e2/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-10-24 11:07:17,007 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b960972-feb1-4dbd-9078-1fb01f2e92e2/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 11:07:17,008 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 11:07:17,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 11:07:17,008 INFO L82 PathProgramCache]: Analyzing trace with hash -978676906, now seen corresponding path program 1 times [2021-10-24 11:07:17,008 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 11:07:17,008 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17545243] [2021-10-24 11:07:17,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 11:07:17,009 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 11:07:17,032 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-24 11:07:17,039 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1802513793] [2021-10-24 11:07:17,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 11:07:17,040 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 11:07:17,040 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b960972-feb1-4dbd-9078-1fb01f2e92e2/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 11:07:17,041 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b960972-feb1-4dbd-9078-1fb01f2e92e2/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-24 11:07:17,067 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b960972-feb1-4dbd-9078-1fb01f2e92e2/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-10-24 11:07:17,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 11:07:17,140 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-24 11:07:17,141 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 11:07:17,208 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 11:07:17,208 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 11:07:17,255 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 11:07:17,256 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 11:07:17,256 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17545243] [2021-10-24 11:07:17,256 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-24 11:07:17,256 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1802513793] [2021-10-24 11:07:17,256 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1802513793] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 11:07:17,257 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 11:07:17,257 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 8 [2021-10-24 11:07:17,257 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357836912] [2021-10-24 11:07:17,257 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-24 11:07:17,257 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 11:07:17,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-24 11:07:17,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-10-24 11:07:17,259 INFO L87 Difference]: Start difference. First operand 21 states and 29 transitions. Second operand has 8 states, 8 states have (on average 1.875) internal successors, (15), 8 states have internal predecessors, (15), 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) [2021-10-24 11:07:17,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 11:07:17,324 INFO L93 Difference]: Finished difference Result 35 states and 43 transitions. [2021-10-24 11:07:17,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-24 11:07:17,325 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.875) internal successors, (15), 8 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-10-24 11:07:17,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 11:07:17,326 INFO L225 Difference]: With dead ends: 35 [2021-10-24 11:07:17,326 INFO L226 Difference]: Without dead ends: 25 [2021-10-24 11:07:17,326 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 42.5ms TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2021-10-24 11:07:17,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2021-10-24 11:07:17,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 20. [2021-10-24 11:07:17,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.4210526315789473) internal successors, (27), 19 states have internal predecessors, (27), 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) [2021-10-24 11:07:17,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 27 transitions. [2021-10-24 11:07:17,339 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 27 transitions. Word has length 10 [2021-10-24 11:07:17,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 11:07:17,340 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 27 transitions. [2021-10-24 11:07:17,340 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.875) internal successors, (15), 8 states have internal predecessors, (15), 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) [2021-10-24 11:07:17,340 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 27 transitions. [2021-10-24 11:07:17,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-24 11:07:17,341 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 11:07:17,341 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 11:07:17,379 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b960972-feb1-4dbd-9078-1fb01f2e92e2/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-10-24 11:07:17,567 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b960972-feb1-4dbd-9078-1fb01f2e92e2/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 11:07:17,568 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 11:07:17,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 11:07:17,568 INFO L82 PathProgramCache]: Analyzing trace with hash 848835292, now seen corresponding path program 2 times [2021-10-24 11:07:17,568 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 11:07:17,568 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19657319] [2021-10-24 11:07:17,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 11:07:17,568 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 11:07:17,595 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-24 11:07:17,595 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [502526375] [2021-10-24 11:07:17,595 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-24 11:07:17,596 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 11:07:17,596 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b960972-feb1-4dbd-9078-1fb01f2e92e2/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 11:07:17,597 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b960972-feb1-4dbd-9078-1fb01f2e92e2/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-24 11:07:17,618 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b960972-feb1-4dbd-9078-1fb01f2e92e2/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-10-24 11:07:17,698 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-24 11:07:17,698 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-24 11:07:17,699 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-24 11:07:17,700 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 11:07:17,765 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-24 11:07:17,765 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 11:07:17,814 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-24 11:07:17,814 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 11:07:17,814 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19657319] [2021-10-24 11:07:17,814 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-24 11:07:17,814 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [502526375] [2021-10-24 11:07:17,814 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [502526375] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-24 11:07:17,815 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1506103830] [2021-10-24 11:07:17,817 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-10-24 11:07:17,817 INFO L166 IcfgInterpreter]: Building call graph [2021-10-24 11:07:17,817 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-24 11:07:17,818 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-24 11:07:17,818 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-24 11:07:17,826 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:07:17,827 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 11:07:17,827 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:07:17,828 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-10-24 11:07:17,828 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 11:07:17,829 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:07:17,830 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-10-24 11:07:17,831 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 127 [2021-10-24 11:07:17,833 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_26|], 21=[|v_#valid_28|]} [2021-10-24 11:07:17,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:07:17,842 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:07:17,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:07:17,844 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 9 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2021-10-24 11:07:17,845 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:07:17,845 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-24 11:07:17,846 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:07:17,851 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-24 11:07:17,851 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-24 11:07:17,852 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:07:17,859 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:07:17,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:07:17,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:07:17,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:07:17,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:07:17,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:07:17,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:07:17,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:07:17,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:07:17,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:07:17,878 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 31 treesize of output 30 [2021-10-24 11:07:17,879 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:07:17,888 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-10-24 11:07:17,889 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:07:17,891 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-10-24 11:07:17,891 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-10-24 11:07:17,892 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:07:17,895 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:07:17,896 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:07:17,897 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 99 [2021-10-24 11:07:17,898 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-24 11:07:17,898 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:124, output treesize:99 [2021-10-24 11:07:17,905 INFO L180 QuantifierPusher]: treesize reduction 6, result has 97.2 percent of original size [2021-10-24 11:07:17,906 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 11:07:17,906 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:07:17,907 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-10-24 11:07:17,915 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 11:07:17,916 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:07:17,916 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-10-24 11:07:17,917 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 11:07:17,918 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:07:17,918 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-10-24 11:07:17,921 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 211 [2021-10-24 11:07:17,926 INFO L446 ElimStorePlain]: Different costs {9=[|v_#length_27|], 28=[|v_#valid_29|]} [2021-10-24 11:07:17,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:07:17,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:07:17,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:07:17,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:07:17,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:07:17,954 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:07:17,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:07:17,989 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-10-24 11:07:17,989 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 12 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 29 treesize of output 39 [2021-10-24 11:07:17,990 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:07:17,998 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-10-24 11:07:17,999 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:07:17,999 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-10-24 11:07:17,999 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-24 11:07:18,008 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-24 11:07:18,009 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:07:18,009 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-24 11:07:18,009 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:07:18,010 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-24 11:07:18,010 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-10-24 11:07:18,010 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:07:18,018 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:07:18,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:07:18,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:07:18,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:07:18,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:07:18,043 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:07:18,045 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:07:18,050 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:07:18,052 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:07:18,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:07:18,078 INFO L354 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2021-10-24 11:07:18,079 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 14 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 3 case distinctions, treesize of input 44 treesize of output 53 [2021-10-24 11:07:18,079 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:07:18,083 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-10-24 11:07:18,084 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:07:18,085 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-10-24 11:07:18,085 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-10-24 11:07:18,085 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:07:18,093 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:07:18,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:07:18,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:07:18,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:07:18,108 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 8 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 37 [2021-10-24 11:07:18,109 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:07:18,110 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-10-24 11:07:18,122 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:07:18,122 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-10-24 11:07:18,123 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-10-24 11:07:18,123 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:07:18,131 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:07:18,134 INFO L180 QuantifierPusher]: treesize reduction 3, result has 98.3 percent of original size [2021-10-24 11:07:18,137 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 172 [2021-10-24 11:07:18,137 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-10-24 11:07:18,138 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 3 variables, input treesize:392, output treesize:172 [2021-10-24 11:07:18,144 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:07:18,146 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 11:07:18,147 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:07:18,147 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 58 [2021-10-24 11:07:18,150 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 208 [2021-10-24 11:07:18,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:07:18,165 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-24 11:07:18,166 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:07:18,167 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:07:18,168 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:07:18,170 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 62 [2021-10-24 11:07:18,171 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:07:18,172 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 48 [2021-10-24 11:07:18,173 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:07:18,174 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 48 [2021-10-24 11:07:18,174 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-24 11:07:18,174 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:07:18,182 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:07:18,184 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:07:18,187 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 196 [2021-10-24 11:07:18,188 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-10-24 11:07:18,188 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:206, output treesize:196 [2021-10-24 11:07:18,192 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:07:18,210 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:07:18,229 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:07:18,268 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:07:18,283 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 11:07:18,290 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:07:18,291 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 11:07:18,292 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:07:18,292 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 75 [2021-10-24 11:07:18,293 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 11:07:18,294 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:07:18,295 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 58 [2021-10-24 11:07:18,301 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 429 [2021-10-24 11:07:18,303 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 11:07:18,309 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:07:18,316 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 399 [2021-10-24 11:07:18,324 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 478 [2021-10-24 11:07:18,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:07:18,345 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:07:18,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:07:18,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:07:18,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:07:18,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:07:18,354 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:07:18,365 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 11 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 77 [2021-10-24 11:07:18,366 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:07:18,368 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 60 [2021-10-24 11:07:18,370 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:07:18,370 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 60 [2021-10-24 11:07:18,371 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-24 11:07:18,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:07:18,385 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-24 11:07:18,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:07:18,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:07:18,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:07:18,390 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 62 [2021-10-24 11:07:18,391 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:07:18,393 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-10-24 11:07:18,394 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:07:18,394 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-10-24 11:07:18,395 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-10-24 11:07:18,395 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:07:18,435 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:07:18,456 INFO L180 QuantifierPusher]: treesize reduction 131, result has 76.8 percent of original size [2021-10-24 11:07:18,465 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 434 [2021-10-24 11:07:18,466 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2021-10-24 11:07:18,467 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:579, output treesize:434 [2021-10-24 11:07:18,474 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:07:18,516 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:07:18,518 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:07:18,529 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:07:18,530 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:07:18,531 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:07:18,536 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:07:18,545 INFO L180 QuantifierPusher]: treesize reduction 48, result has 64.4 percent of original size [2021-10-24 11:07:18,546 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 11:07:18,547 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:07:18,547 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-10-24 11:07:18,549 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 85 [2021-10-24 11:07:18,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:07:18,560 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 27 treesize of output 27 [2021-10-24 11:07:18,561 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:07:18,562 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-10-24 11:07:18,562 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:07:18,563 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-10-24 11:07:18,563 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-24 11:07:18,563 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:07:18,566 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:07:18,567 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:07:18,568 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 80 [2021-10-24 11:07:18,568 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-10-24 11:07:18,569 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:84, output treesize:80 [2021-10-24 11:07:18,574 INFO L180 QuantifierPusher]: treesize reduction 49, result has 54.6 percent of original size [2021-10-24 11:07:18,576 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-10-24 11:07:18,579 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:07:18,581 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 11:07:18,581 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:07:18,581 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-10-24 11:07:18,582 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 96 [2021-10-24 11:07:18,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:07:18,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:07:18,591 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-24 11:07:18,595 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-10-24 11:07:18,595 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 36 treesize of output 39 [2021-10-24 11:07:18,596 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:07:18,597 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-10-24 11:07:18,597 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:07:18,597 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-10-24 11:07:18,598 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-24 11:07:18,598 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:07:18,600 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:07:18,601 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:07:18,602 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 93 [2021-10-24 11:07:18,603 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-10-24 11:07:18,603 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:95, output treesize:93 [2021-10-24 11:07:18,605 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:07:18,611 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:07:18,617 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:07:18,630 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:07:18,634 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 11:07:18,636 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:07:18,637 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 11:07:18,637 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:07:18,638 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 69 [2021-10-24 11:07:18,639 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 11:07:18,639 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:07:18,644 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-10-24 11:07:18,646 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 209 [2021-10-24 11:07:18,646 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 11:07:18,647 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:07:18,649 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 171 [2021-10-24 11:07:18,651 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 235 [2021-10-24 11:07:18,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:07:18,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:07:18,674 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-24 11:07:18,678 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-10-24 11:07:18,678 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 36 treesize of output 39 [2021-10-24 11:07:18,679 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:07:18,680 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-10-24 11:07:18,681 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:07:18,681 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-10-24 11:07:18,681 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-24 11:07:18,690 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:07:18,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:07:18,692 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:07:18,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:07:18,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:07:18,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:07:18,696 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-24 11:07:18,696 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-24 11:07:18,702 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-10-24 11:07:18,703 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 69 treesize of output 68 [2021-10-24 11:07:18,704 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:07:18,705 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 69 [2021-10-24 11:07:18,705 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:07:18,706 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 69 [2021-10-24 11:07:18,706 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-10-24 11:07:18,707 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:07:18,720 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:07:18,730 INFO L180 QuantifierPusher]: treesize reduction 117, result has 64.3 percent of original size [2021-10-24 11:07:18,732 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 211 [2021-10-24 11:07:18,733 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2021-10-24 11:07:18,733 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:330, output treesize:211 [2021-10-24 11:07:18,737 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:07:18,748 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:07:18,749 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:07:18,750 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:07:18,751 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:07:18,756 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:07:18,764 INFO L180 QuantifierPusher]: treesize reduction 48, result has 66.7 percent of original size [2021-10-24 11:07:18,765 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 11:07:18,765 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:07:18,766 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-10-24 11:07:18,767 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 94 [2021-10-24 11:07:18,774 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:07:18,775 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:07:18,775 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-24 11:07:18,779 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-10-24 11:07:18,779 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 36 treesize of output 39 [2021-10-24 11:07:18,780 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:07:18,781 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-10-24 11:07:18,781 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:07:18,782 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-10-24 11:07:18,782 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-24 11:07:18,782 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:07:18,784 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:07:18,785 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:07:18,786 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 91 [2021-10-24 11:07:18,787 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-10-24 11:07:18,787 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:93, output treesize:91 [2021-10-24 11:07:18,793 INFO L180 QuantifierPusher]: treesize reduction 49, result has 54.6 percent of original size [2021-10-24 11:07:18,795 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-10-24 11:07:18,799 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-24 11:07:19,355 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-24 11:07:19,355 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-24 11:07:19,355 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2021-10-24 11:07:19,355 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120720043] [2021-10-24 11:07:19,356 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-24 11:07:19,356 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 11:07:19,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-24 11:07:19,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2021-10-24 11:07:19,357 INFO L87 Difference]: Start difference. First operand 20 states and 27 transitions. Second operand has 8 states, 8 states have (on average 1.75) internal successors, (14), 8 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 11:07:19,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 11:07:19,430 INFO L93 Difference]: Finished difference Result 40 states and 50 transitions. [2021-10-24 11:07:19,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-24 11:07:19,432 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.75) internal successors, (14), 8 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-10-24 11:07:19,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 11:07:19,432 INFO L225 Difference]: With dead ends: 40 [2021-10-24 11:07:19,433 INFO L226 Difference]: Without dead ends: 31 [2021-10-24 11:07:19,433 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 16 SyntacticMatches, 4 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 601.7ms TimeCoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2021-10-24 11:07:19,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2021-10-24 11:07:19,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 20. [2021-10-24 11:07:19,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.368421052631579) internal successors, (26), 19 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) [2021-10-24 11:07:19,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 26 transitions. [2021-10-24 11:07:19,438 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 26 transitions. Word has length 11 [2021-10-24 11:07:19,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 11:07:19,439 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 26 transitions. [2021-10-24 11:07:19,439 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.75) internal successors, (14), 8 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 11:07:19,439 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 26 transitions. [2021-10-24 11:07:19,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-24 11:07:19,439 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 11:07:19,439 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 11:07:19,473 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b960972-feb1-4dbd-9078-1fb01f2e92e2/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-10-24 11:07:19,640 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b960972-feb1-4dbd-9078-1fb01f2e92e2/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 11:07:19,640 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 11:07:19,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 11:07:19,641 INFO L82 PathProgramCache]: Analyzing trace with hash -746752909, now seen corresponding path program 3 times [2021-10-24 11:07:19,641 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 11:07:19,641 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504149044] [2021-10-24 11:07:19,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 11:07:19,641 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 11:07:19,656 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-24 11:07:19,656 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [3914112] [2021-10-24 11:07:19,656 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-24 11:07:19,656 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 11:07:19,657 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b960972-feb1-4dbd-9078-1fb01f2e92e2/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 11:07:19,657 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b960972-feb1-4dbd-9078-1fb01f2e92e2/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-24 11:07:19,668 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b960972-feb1-4dbd-9078-1fb01f2e92e2/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-10-24 11:07:19,760 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-24 11:07:19,760 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-24 11:07:19,761 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-24 11:07:19,763 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 11:07:19,773 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-10-24 11:07:19,777 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2021-10-24 11:07:19,849 INFO L354 Elim1Store]: treesize reduction 74, result has 26.0 percent of original size [2021-10-24 11:07:19,849 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 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 41 treesize of output 52 [2021-10-24 11:07:20,001 INFO L354 Elim1Store]: treesize reduction 200, result has 28.3 percent of original size [2021-10-24 11:07:20,001 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 69 treesize of output 116 [2021-10-24 11:07:21,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:07:21,402 INFO L354 Elim1Store]: treesize reduction 152, result has 0.7 percent of original size [2021-10-24 11:07:21,402 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 2 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 148 treesize of output 134 [2021-10-24 11:07:22,024 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:07:22,231 INFO L354 Elim1Store]: treesize reduction 962, result has 8.9 percent of original size [2021-10-24 11:07:22,231 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 1 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 45 case distinctions, treesize of input 186 treesize of output 181 [2021-10-24 11:07:57,729 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 11:07:57,729 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 11:07:59,645 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ULTIMATE.start_main_~i~0_111 Int)) (or (< v_ULTIMATE.start_main_~i~0_111 (+ c_ULTIMATE.start_main_~i~0 1)) (= (select (let ((.cse0 (let ((.cse2 (select |c_#memory_int| c_ULTIMATE.start_main_~b~0.base)) (.cse3 (* c_ULTIMATE.start_main_~i~0 8))) (store .cse2 (+ .cse3 c_ULTIMATE.start_main_~b~0.offset) (+ (select .cse2 (+ .cse3 c_ULTIMATE.start_main_~b~0.offset (- 8))) (select (select |c_#memory_int| c_ULTIMATE.start_main_~a~0.base) (+ .cse3 c_ULTIMATE.start_main_~a~0.offset (- 8))))))) (.cse1 (* v_ULTIMATE.start_main_~i~0_111 8))) (store .cse0 (+ c_ULTIMATE.start_main_~b~0.offset .cse1) (+ (select .cse0 (+ c_ULTIMATE.start_main_~b~0.offset .cse1 (- 8))) (select (select (store |c_#memory_int| c_ULTIMATE.start_main_~b~0.base .cse0) c_ULTIMATE.start_main_~a~0.base) (+ c_ULTIMATE.start_main_~a~0.offset .cse1 (- 8)))))) c_ULTIMATE.start_main_~b~0.offset) 1))) is different from false [2021-10-24 11:08:00,668 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ULTIMATE.start_main_~i~0_111 Int)) (or (< v_ULTIMATE.start_main_~i~0_111 2) (= (select (let ((.cse0 (let ((.cse2 (select |c_#memory_int| c_ULTIMATE.start_main_~b~0.base))) (store .cse2 (+ c_ULTIMATE.start_main_~b~0.offset 8) (+ (select .cse2 c_ULTIMATE.start_main_~b~0.offset) (select (select |c_#memory_int| c_ULTIMATE.start_main_~a~0.base) c_ULTIMATE.start_main_~a~0.offset))))) (.cse1 (* v_ULTIMATE.start_main_~i~0_111 8))) (store .cse0 (+ c_ULTIMATE.start_main_~b~0.offset .cse1) (+ (select (select (store |c_#memory_int| c_ULTIMATE.start_main_~b~0.base .cse0) c_ULTIMATE.start_main_~a~0.base) (+ c_ULTIMATE.start_main_~a~0.offset .cse1 (- 8))) (select .cse0 (+ c_ULTIMATE.start_main_~b~0.offset .cse1 (- 8)))))) c_ULTIMATE.start_main_~b~0.offset) 1))) is different from false [2021-10-24 11:08:02,208 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ULTIMATE.start_main_~i~0_111 Int) (ULTIMATE.start_main_~i~0 Int)) (or (< v_ULTIMATE.start_main_~i~0_111 2) (= (select (let ((.cse4 (let ((.cse5 (select |c_#memory_int| c_ULTIMATE.start_main_~a~0.base)) (.cse6 (* ULTIMATE.start_main_~i~0 8))) (store .cse5 (+ .cse6 c_ULTIMATE.start_main_~a~0.offset) (+ (select .cse5 (+ .cse6 c_ULTIMATE.start_main_~a~0.offset (- 8))) 4))))) (let ((.cse2 (store |c_#memory_int| c_ULTIMATE.start_main_~a~0.base .cse4))) (let ((.cse0 (let ((.cse3 (select .cse2 c_ULTIMATE.start_main_~b~0.base))) (store .cse3 (+ c_ULTIMATE.start_main_~b~0.offset 8) (+ (select .cse4 c_ULTIMATE.start_main_~a~0.offset) (select .cse3 c_ULTIMATE.start_main_~b~0.offset))))) (.cse1 (* v_ULTIMATE.start_main_~i~0_111 8))) (store .cse0 (+ c_ULTIMATE.start_main_~b~0.offset .cse1) (+ (select (select (store .cse2 c_ULTIMATE.start_main_~b~0.base .cse0) c_ULTIMATE.start_main_~a~0.base) (+ c_ULTIMATE.start_main_~a~0.offset .cse1 (- 8))) (select .cse0 (+ c_ULTIMATE.start_main_~b~0.offset .cse1 (- 8)))))))) c_ULTIMATE.start_main_~b~0.offset) 1))) is different from false [2021-10-24 11:08:04,301 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ULTIMATE.start_main_~i~0_111 Int) (ULTIMATE.start_main_~i~0 Int) (v_ULTIMATE.start_main_~i~0_115 Int)) (or (< v_ULTIMATE.start_main_~i~0_111 2) (= (select (let ((.cse4 (let ((.cse5 (let ((.cse7 (select |c_#memory_int| c_ULTIMATE.start_main_~a~0.base)) (.cse8 (* ULTIMATE.start_main_~i~0 8))) (store .cse7 (+ .cse8 c_ULTIMATE.start_main_~a~0.offset) (+ (select .cse7 (+ .cse8 c_ULTIMATE.start_main_~a~0.offset (- 8))) 4)))) (.cse6 (* v_ULTIMATE.start_main_~i~0_115 8))) (store .cse5 (+ .cse6 c_ULTIMATE.start_main_~a~0.offset) (+ (select .cse5 (+ .cse6 c_ULTIMATE.start_main_~a~0.offset (- 8))) 4))))) (let ((.cse2 (store |c_#memory_int| c_ULTIMATE.start_main_~a~0.base .cse4))) (let ((.cse0 (let ((.cse3 (select .cse2 c_ULTIMATE.start_main_~b~0.base))) (store .cse3 (+ c_ULTIMATE.start_main_~b~0.offset 8) (+ (select .cse3 c_ULTIMATE.start_main_~b~0.offset) (select .cse4 c_ULTIMATE.start_main_~a~0.offset))))) (.cse1 (* v_ULTIMATE.start_main_~i~0_111 8))) (store .cse0 (+ c_ULTIMATE.start_main_~b~0.offset .cse1) (+ (select (select (store .cse2 c_ULTIMATE.start_main_~b~0.base .cse0) c_ULTIMATE.start_main_~a~0.base) (+ c_ULTIMATE.start_main_~a~0.offset .cse1 (- 8))) (select .cse0 (+ c_ULTIMATE.start_main_~b~0.offset .cse1 (- 8)))))))) c_ULTIMATE.start_main_~b~0.offset) 1))) is different from false [2021-10-24 11:08:04,344 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 5 not checked. [2021-10-24 11:08:04,344 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 11:08:04,344 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504149044] [2021-10-24 11:08:04,344 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-24 11:08:04,344 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [3914112] [2021-10-24 11:08:04,345 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [3914112] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-24 11:08:04,345 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1313145327] [2021-10-24 11:08:04,347 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-10-24 11:08:04,347 INFO L166 IcfgInterpreter]: Building call graph [2021-10-24 11:08:04,348 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-24 11:08:04,348 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-24 11:08:04,348 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-24 11:08:04,352 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:08:04,353 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 11:08:04,354 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:08:04,355 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-10-24 11:08:04,355 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 11:08:04,355 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:08:04,356 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-10-24 11:08:04,357 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 127 [2021-10-24 11:08:04,360 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_29|], 21=[|v_#valid_32|]} [2021-10-24 11:08:04,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:08:04,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:08:04,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:08:04,373 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 9 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2021-10-24 11:08:04,374 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:08:04,374 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-24 11:08:04,375 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:08:04,375 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-24 11:08:04,376 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-24 11:08:04,376 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:08:04,380 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:08:04,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:08:04,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:08:04,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:08:04,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:08:04,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:08:04,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:08:04,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:08:04,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:08:04,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:08:04,400 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 31 treesize of output 30 [2021-10-24 11:08:04,401 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:08:04,403 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-10-24 11:08:04,403 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:08:04,404 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-10-24 11:08:04,404 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-10-24 11:08:04,405 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:08:04,408 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:08:04,409 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:08:04,410 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 99 [2021-10-24 11:08:04,411 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-24 11:08:04,411 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:124, output treesize:99 [2021-10-24 11:08:04,418 INFO L180 QuantifierPusher]: treesize reduction 6, result has 97.2 percent of original size [2021-10-24 11:08:04,419 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 11:08:04,419 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:08:04,420 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-10-24 11:08:04,421 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 11:08:04,421 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:08:04,422 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-10-24 11:08:04,423 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 11:08:04,423 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:08:04,424 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-10-24 11:08:04,426 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 211 [2021-10-24 11:08:04,430 INFO L446 ElimStorePlain]: Different costs {9=[|v_#length_30|], 28=[|v_#valid_33|]} [2021-10-24 11:08:04,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:08:04,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:08:04,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:08:04,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:08:04,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:08:04,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:08:04,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:08:04,502 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-10-24 11:08:04,503 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 12 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 29 treesize of output 39 [2021-10-24 11:08:04,507 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:08:04,509 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-10-24 11:08:04,510 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:08:04,510 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-10-24 11:08:04,511 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-24 11:08:04,520 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-24 11:08:04,521 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:08:04,521 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-24 11:08:04,522 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:08:04,522 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-24 11:08:04,522 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-10-24 11:08:04,523 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:08:04,530 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:08:04,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:08:04,549 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:08:04,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:08:04,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:08:04,555 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:08:04,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:08:04,563 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:08:04,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:08:04,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:08:04,595 INFO L354 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2021-10-24 11:08:04,595 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 14 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 3 case distinctions, treesize of input 44 treesize of output 53 [2021-10-24 11:08:04,596 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:08:04,600 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-10-24 11:08:04,600 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:08:04,601 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-10-24 11:08:04,601 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-10-24 11:08:04,602 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:08:04,609 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:08:04,623 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:08:04,624 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:08:04,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:08:04,627 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 8 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 37 [2021-10-24 11:08:04,628 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:08:04,629 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-10-24 11:08:04,629 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:08:04,630 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-10-24 11:08:04,630 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-10-24 11:08:04,630 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:08:04,664 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:08:04,668 INFO L180 QuantifierPusher]: treesize reduction 3, result has 98.3 percent of original size [2021-10-24 11:08:04,670 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 172 [2021-10-24 11:08:04,673 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-10-24 11:08:04,674 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 3 variables, input treesize:392, output treesize:172 [2021-10-24 11:08:04,680 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:08:04,683 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 11:08:04,684 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:08:04,690 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 58 [2021-10-24 11:08:04,693 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 208 [2021-10-24 11:08:04,709 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-24 11:08:04,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:08:04,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:08:04,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:08:04,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:08:04,717 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 62 [2021-10-24 11:08:04,718 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:08:04,720 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-10-24 11:08:04,721 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:08:04,722 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-10-24 11:08:04,722 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-24 11:08:04,723 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:08:04,732 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:08:04,736 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:08:04,739 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 209 [2021-10-24 11:08:04,739 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-10-24 11:08:04,740 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:206, output treesize:209 [2021-10-24 11:08:04,745 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:08:04,766 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:08:04,789 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:08:04,841 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:08:04,851 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 11:08:04,856 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:08:04,857 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 11:08:04,858 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:08:04,859 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 86 [2021-10-24 11:08:04,860 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 11:08:04,860 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:08:04,861 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 58 [2021-10-24 11:08:04,866 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 440 [2021-10-24 11:08:04,867 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 11:08:04,872 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:08:04,877 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 410 [2021-10-24 11:08:04,884 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 489 [2021-10-24 11:08:04,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:08:04,906 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-24 11:08:04,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:08:04,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:08:04,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:08:04,912 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-24 11:08:04,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:08:04,928 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 62 [2021-10-24 11:08:04,929 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:08:04,931 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 48 [2021-10-24 11:08:04,932 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:08:04,933 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 48 [2021-10-24 11:08:04,933 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-24 11:08:04,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:08:04,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:08:04,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:08:04,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:08:04,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:08:04,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:08:04,959 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 86 treesize of output 79 [2021-10-24 11:08:04,960 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:08:04,963 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 82 [2021-10-24 11:08:04,964 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:08:04,964 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 82 [2021-10-24 11:08:04,965 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-10-24 11:08:04,965 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:08:05,014 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:08:05,031 INFO L180 QuantifierPusher]: treesize reduction 131, result has 77.3 percent of original size [2021-10-24 11:08:05,037 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 445 [2021-10-24 11:08:05,039 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2021-10-24 11:08:05,039 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:590, output treesize:445 [2021-10-24 11:08:05,048 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:08:05,103 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:08:05,104 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:08:05,106 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:08:05,107 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:08:05,109 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:08:05,114 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:08:05,122 INFO L180 QuantifierPusher]: treesize reduction 48, result has 64.4 percent of original size [2021-10-24 11:08:05,124 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 11:08:05,124 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:08:05,125 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-10-24 11:08:05,126 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 85 [2021-10-24 11:08:05,133 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:08:05,134 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 27 treesize of output 27 [2021-10-24 11:08:05,134 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:08:05,135 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-10-24 11:08:05,136 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:08:05,136 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-10-24 11:08:05,137 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-24 11:08:05,137 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:08:05,140 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:08:05,141 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:08:05,142 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 80 [2021-10-24 11:08:05,142 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-10-24 11:08:05,143 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:84, output treesize:80 [2021-10-24 11:08:05,148 INFO L180 QuantifierPusher]: treesize reduction 49, result has 54.6 percent of original size [2021-10-24 11:08:05,150 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-10-24 11:08:05,152 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:08:05,154 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 11:08:05,154 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:08:05,155 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-10-24 11:08:05,156 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 96 [2021-10-24 11:08:05,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:08:05,165 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:08:05,166 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-24 11:08:05,170 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-10-24 11:08:05,170 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 36 treesize of output 39 [2021-10-24 11:08:05,171 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:08:05,172 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-10-24 11:08:05,173 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:08:05,173 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-10-24 11:08:05,174 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-24 11:08:05,174 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:08:05,177 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:08:05,178 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:08:05,179 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 91 [2021-10-24 11:08:05,180 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-10-24 11:08:05,180 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:95, output treesize:91 [2021-10-24 11:08:05,182 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:08:05,189 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:08:05,196 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:08:05,209 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:08:05,213 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 11:08:05,215 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:08:05,216 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 11:08:05,216 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:08:05,217 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-10-24 11:08:05,218 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 11:08:05,218 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:08:05,219 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 69 [2021-10-24 11:08:05,221 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 215 [2021-10-24 11:08:05,221 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 11:08:05,223 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:08:05,225 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 177 [2021-10-24 11:08:05,227 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 238 [2021-10-24 11:08:05,241 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:08:05,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:08:05,246 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-24 11:08:05,252 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-10-24 11:08:05,253 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 36 treesize of output 39 [2021-10-24 11:08:05,253 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:08:05,254 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-10-24 11:08:05,255 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:08:05,256 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-10-24 11:08:05,256 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-24 11:08:05,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:08:05,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:08:05,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:08:05,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:08:05,272 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:08:05,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:08:05,274 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-24 11:08:05,275 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-24 11:08:05,283 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-10-24 11:08:05,284 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 69 treesize of output 68 [2021-10-24 11:08:05,285 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:08:05,286 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 67 [2021-10-24 11:08:05,287 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:08:05,287 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 67 [2021-10-24 11:08:05,288 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-10-24 11:08:05,288 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:08:05,312 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:08:05,318 INFO L180 QuantifierPusher]: treesize reduction 113, result has 65.1 percent of original size [2021-10-24 11:08:05,320 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 211 [2021-10-24 11:08:05,321 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2021-10-24 11:08:05,321 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:330, output treesize:211 [2021-10-24 11:08:05,326 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:08:05,340 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:08:05,342 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:08:05,343 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:08:05,345 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:08:05,349 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:08:05,358 INFO L180 QuantifierPusher]: treesize reduction 48, result has 66.7 percent of original size [2021-10-24 11:08:05,359 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 11:08:05,360 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:08:05,360 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-10-24 11:08:05,361 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 94 [2021-10-24 11:08:05,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:08:05,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:08:05,371 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-24 11:08:05,375 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-10-24 11:08:05,376 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 36 treesize of output 39 [2021-10-24 11:08:05,376 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:08:05,377 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-10-24 11:08:05,378 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:08:05,378 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-10-24 11:08:05,379 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-24 11:08:05,379 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:08:05,382 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:08:05,383 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:08:05,384 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 89 [2021-10-24 11:08:05,385 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-10-24 11:08:05,385 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:93, output treesize:89 [2021-10-24 11:08:05,393 INFO L180 QuantifierPusher]: treesize reduction 49, result has 54.6 percent of original size [2021-10-24 11:08:05,395 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-10-24 11:08:05,400 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-24 11:08:06,343 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-24 11:08:06,343 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-24 11:08:06,343 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2021-10-24 11:08:06,344 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903622151] [2021-10-24 11:08:06,344 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-24 11:08:06,344 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 11:08:06,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-24 11:08:06,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=260, Unknown=4, NotChecked=140, Total=462 [2021-10-24 11:08:06,345 INFO L87 Difference]: Start difference. First operand 20 states and 26 transitions. Second operand has 17 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 17 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 11:08:08,384 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (select |c_#memory_int| c_ULTIMATE.start_main_~b~0.base)) (.cse2 (select |c_#memory_int| c_ULTIMATE.start_main_~a~0.base))) (and (= (select (let ((.cse1 (* c_ULTIMATE.start_main_~i~0 8))) (store .cse0 (+ .cse1 c_ULTIMATE.start_main_~b~0.offset) (+ (select .cse0 (+ .cse1 c_ULTIMATE.start_main_~b~0.offset (- 8))) (select .cse2 (+ .cse1 c_ULTIMATE.start_main_~a~0.offset (- 8)))))) c_ULTIMATE.start_main_~b~0.offset) 1) (not (= c_ULTIMATE.start_main_~b~0.base c_ULTIMATE.start_main_~a~0.base)) (forall ((v_ULTIMATE.start_main_~i~0_111 Int) (ULTIMATE.start_main_~i~0 Int) (v_ULTIMATE.start_main_~i~0_115 Int)) (or (< v_ULTIMATE.start_main_~i~0_111 2) (= (select (let ((.cse7 (let ((.cse8 (let ((.cse10 (select |c_#memory_int| c_ULTIMATE.start_main_~a~0.base)) (.cse11 (* ULTIMATE.start_main_~i~0 8))) (store .cse10 (+ .cse11 c_ULTIMATE.start_main_~a~0.offset) (+ (select .cse10 (+ .cse11 c_ULTIMATE.start_main_~a~0.offset (- 8))) 4)))) (.cse9 (* v_ULTIMATE.start_main_~i~0_115 8))) (store .cse8 (+ .cse9 c_ULTIMATE.start_main_~a~0.offset) (+ (select .cse8 (+ .cse9 c_ULTIMATE.start_main_~a~0.offset (- 8))) 4))))) (let ((.cse5 (store |c_#memory_int| c_ULTIMATE.start_main_~a~0.base .cse7))) (let ((.cse3 (let ((.cse6 (select .cse5 c_ULTIMATE.start_main_~b~0.base))) (store .cse6 (+ c_ULTIMATE.start_main_~b~0.offset 8) (+ (select .cse6 c_ULTIMATE.start_main_~b~0.offset) (select .cse7 c_ULTIMATE.start_main_~a~0.offset))))) (.cse4 (* v_ULTIMATE.start_main_~i~0_111 8))) (store .cse3 (+ c_ULTIMATE.start_main_~b~0.offset .cse4) (+ (select (select (store .cse5 c_ULTIMATE.start_main_~b~0.base .cse3) c_ULTIMATE.start_main_~a~0.base) (+ c_ULTIMATE.start_main_~a~0.offset .cse4 (- 8))) (select .cse3 (+ c_ULTIMATE.start_main_~b~0.offset .cse4 (- 8)))))))) c_ULTIMATE.start_main_~b~0.offset) 1))) (= (select .cse0 c_ULTIMATE.start_main_~b~0.offset) 1) (= c_ULTIMATE.start_main_~b~0.offset 0) (= 8 (select .cse2 c_ULTIMATE.start_main_~a~0.offset)))) is different from false [2021-10-24 11:08:10,038 WARN L838 $PredicateComparison]: unable to prove that (and (not (= c_ULTIMATE.start_main_~b~0.base c_ULTIMATE.start_main_~a~0.base)) (forall ((v_ULTIMATE.start_main_~i~0_111 Int) (ULTIMATE.start_main_~i~0 Int)) (or (< v_ULTIMATE.start_main_~i~0_111 2) (= (select (let ((.cse4 (let ((.cse5 (select |c_#memory_int| c_ULTIMATE.start_main_~a~0.base)) (.cse6 (* ULTIMATE.start_main_~i~0 8))) (store .cse5 (+ .cse6 c_ULTIMATE.start_main_~a~0.offset) (+ (select .cse5 (+ .cse6 c_ULTIMATE.start_main_~a~0.offset (- 8))) 4))))) (let ((.cse2 (store |c_#memory_int| c_ULTIMATE.start_main_~a~0.base .cse4))) (let ((.cse0 (let ((.cse3 (select .cse2 c_ULTIMATE.start_main_~b~0.base))) (store .cse3 (+ c_ULTIMATE.start_main_~b~0.offset 8) (+ (select .cse4 c_ULTIMATE.start_main_~a~0.offset) (select .cse3 c_ULTIMATE.start_main_~b~0.offset))))) (.cse1 (* v_ULTIMATE.start_main_~i~0_111 8))) (store .cse0 (+ c_ULTIMATE.start_main_~b~0.offset .cse1) (+ (select (select (store .cse2 c_ULTIMATE.start_main_~b~0.base .cse0) c_ULTIMATE.start_main_~a~0.base) (+ c_ULTIMATE.start_main_~a~0.offset .cse1 (- 8))) (select .cse0 (+ c_ULTIMATE.start_main_~b~0.offset .cse1 (- 8)))))))) c_ULTIMATE.start_main_~b~0.offset) 1))) (= (select (select |c_#memory_int| c_ULTIMATE.start_main_~b~0.base) c_ULTIMATE.start_main_~b~0.offset) 1) (exists ((v_ULTIMATE.start_main_~i~0_105 Int)) (let ((.cse7 (select |c_#memory_int| c_ULTIMATE.start_main_~a~0.base))) (and (or (= (* 8 v_ULTIMATE.start_main_~i~0_105) 0) (= 8 (select .cse7 c_ULTIMATE.start_main_~a~0.offset))) (let ((.cse8 (* v_ULTIMATE.start_main_~i~0_105 8))) (= (select .cse7 (+ c_ULTIMATE.start_main_~a~0.offset .cse8)) (+ 4 (select .cse7 (+ c_ULTIMATE.start_main_~a~0.offset .cse8 (- 8))))))))) (= c_ULTIMATE.start_main_~b~0.offset 0)) is different from false [2021-10-24 11:08:11,184 WARN L838 $PredicateComparison]: unable to prove that (and (exists ((v_ULTIMATE.start_main_~i~0_105 Int) (v_ULTIMATE.start_main_~i~0_106 Int)) (let ((.cse5 (select |c_#memory_int| c_ULTIMATE.start_main_~a~0.base)) (.cse6 (* v_ULTIMATE.start_main_~i~0_105 8))) (let ((.cse1 (select .cse5 (+ c_ULTIMATE.start_main_~a~0.offset .cse6))) (.cse2 (* 8 v_ULTIMATE.start_main_~i~0_106)) (.cse3 (* 8 v_ULTIMATE.start_main_~i~0_105))) (and (let ((.cse0 (not (= 8 .cse3)))) (or (and (or .cse0 (= .cse1 12)) (= .cse2 0)) (let ((.cse4 (select .cse5 c_ULTIMATE.start_main_~a~0.offset))) (and (or (= .cse3 0) (= 8 .cse4)) (or .cse0 (= .cse1 (+ .cse4 4))))))) (or (= .cse1 (+ 4 (select .cse5 (+ c_ULTIMATE.start_main_~a~0.offset .cse6 (- 8))))) (= (+ 8 .cse2) .cse3)) (let ((.cse7 (* v_ULTIMATE.start_main_~i~0_106 8))) (= (+ (select .cse5 (+ c_ULTIMATE.start_main_~a~0.offset .cse7 (- 8))) 4) (select .cse5 (+ c_ULTIMATE.start_main_~a~0.offset .cse7)))))))) (not (= c_ULTIMATE.start_main_~b~0.base c_ULTIMATE.start_main_~a~0.base)) (= (select (select |c_#memory_int| c_ULTIMATE.start_main_~b~0.base) c_ULTIMATE.start_main_~b~0.offset) 1) (forall ((v_ULTIMATE.start_main_~i~0_111 Int)) (or (< v_ULTIMATE.start_main_~i~0_111 2) (= (select (let ((.cse8 (let ((.cse10 (select |c_#memory_int| c_ULTIMATE.start_main_~b~0.base))) (store .cse10 (+ c_ULTIMATE.start_main_~b~0.offset 8) (+ (select .cse10 c_ULTIMATE.start_main_~b~0.offset) (select (select |c_#memory_int| c_ULTIMATE.start_main_~a~0.base) c_ULTIMATE.start_main_~a~0.offset))))) (.cse9 (* v_ULTIMATE.start_main_~i~0_111 8))) (store .cse8 (+ c_ULTIMATE.start_main_~b~0.offset .cse9) (+ (select (select (store |c_#memory_int| c_ULTIMATE.start_main_~b~0.base .cse8) c_ULTIMATE.start_main_~a~0.base) (+ c_ULTIMATE.start_main_~a~0.offset .cse9 (- 8))) (select .cse8 (+ c_ULTIMATE.start_main_~b~0.offset .cse9 (- 8)))))) c_ULTIMATE.start_main_~b~0.offset) 1))) (= c_ULTIMATE.start_main_~b~0.offset 0)) is different from false [2021-10-24 11:08:12,588 WARN L838 $PredicateComparison]: unable to prove that (and (exists ((v_ULTIMATE.start_main_~i~0_105 Int) (v_ULTIMATE.start_main_~i~0_106 Int)) (let ((.cse5 (select |c_#memory_int| c_ULTIMATE.start_main_~a~0.base)) (.cse6 (* v_ULTIMATE.start_main_~i~0_105 8))) (let ((.cse1 (select .cse5 (+ c_ULTIMATE.start_main_~a~0.offset .cse6))) (.cse2 (* 8 v_ULTIMATE.start_main_~i~0_106)) (.cse3 (* 8 v_ULTIMATE.start_main_~i~0_105))) (and (let ((.cse0 (not (= 8 .cse3)))) (or (and (or .cse0 (= .cse1 12)) (= .cse2 0)) (let ((.cse4 (select .cse5 c_ULTIMATE.start_main_~a~0.offset))) (and (or (= .cse3 0) (= 8 .cse4)) (or .cse0 (= .cse1 (+ .cse4 4))))))) (or (= .cse1 (+ 4 (select .cse5 (+ c_ULTIMATE.start_main_~a~0.offset .cse6 (- 8))))) (= (+ 8 .cse2) .cse3)) (let ((.cse7 (* v_ULTIMATE.start_main_~i~0_106 8))) (= (+ (select .cse5 (+ c_ULTIMATE.start_main_~a~0.offset .cse7 (- 8))) 4) (select .cse5 (+ c_ULTIMATE.start_main_~a~0.offset .cse7)))))))) (not (= c_ULTIMATE.start_main_~b~0.base c_ULTIMATE.start_main_~a~0.base)) (= (select (select |c_#memory_int| c_ULTIMATE.start_main_~b~0.base) c_ULTIMATE.start_main_~b~0.offset) 1) (forall ((v_ULTIMATE.start_main_~i~0_111 Int)) (or (< v_ULTIMATE.start_main_~i~0_111 (+ c_ULTIMATE.start_main_~i~0 1)) (= (select (let ((.cse8 (let ((.cse10 (select |c_#memory_int| c_ULTIMATE.start_main_~b~0.base)) (.cse11 (* c_ULTIMATE.start_main_~i~0 8))) (store .cse10 (+ .cse11 c_ULTIMATE.start_main_~b~0.offset) (+ (select .cse10 (+ .cse11 c_ULTIMATE.start_main_~b~0.offset (- 8))) (select (select |c_#memory_int| c_ULTIMATE.start_main_~a~0.base) (+ .cse11 c_ULTIMATE.start_main_~a~0.offset (- 8))))))) (.cse9 (* v_ULTIMATE.start_main_~i~0_111 8))) (store .cse8 (+ c_ULTIMATE.start_main_~b~0.offset .cse9) (+ (select .cse8 (+ c_ULTIMATE.start_main_~b~0.offset .cse9 (- 8))) (select (select (store |c_#memory_int| c_ULTIMATE.start_main_~b~0.base .cse8) c_ULTIMATE.start_main_~a~0.base) (+ c_ULTIMATE.start_main_~a~0.offset .cse9 (- 8)))))) c_ULTIMATE.start_main_~b~0.offset) 1))) (= c_ULTIMATE.start_main_~i~0 1) (= c_ULTIMATE.start_main_~b~0.offset 0)) is different from false [2021-10-24 11:08:17,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 11:08:17,784 INFO L93 Difference]: Finished difference Result 47 states and 55 transitions. [2021-10-24 11:08:17,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-24 11:08:17,786 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 17 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-10-24 11:08:17,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 11:08:17,790 INFO L225 Difference]: With dead ends: 47 [2021-10-24 11:08:17,790 INFO L226 Difference]: Without dead ends: 45 [2021-10-24 11:08:17,791 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 7 SyntacticMatches, 4 SemanticMatches, 32 ConstructedPredicates, 8 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 14579.2ms TimeCoverageRelationStatistics Valid=128, Invalid=546, Unknown=8, NotChecked=440, Total=1122 [2021-10-24 11:08:17,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2021-10-24 11:08:17,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 22. [2021-10-24 11:08:17,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.380952380952381) internal successors, (29), 21 states have internal predecessors, (29), 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) [2021-10-24 11:08:17,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 29 transitions. [2021-10-24 11:08:17,801 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 29 transitions. Word has length 11 [2021-10-24 11:08:17,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 11:08:17,801 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 29 transitions. [2021-10-24 11:08:17,802 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 17 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 11:08:17,802 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 29 transitions. [2021-10-24 11:08:17,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-24 11:08:17,803 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 11:08:17,803 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 11:08:17,832 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b960972-feb1-4dbd-9078-1fb01f2e92e2/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2021-10-24 11:08:18,007 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b960972-feb1-4dbd-9078-1fb01f2e92e2/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable83 [2021-10-24 11:08:18,008 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 11:08:18,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 11:08:18,008 INFO L82 PathProgramCache]: Analyzing trace with hash 985561389, now seen corresponding path program 1 times [2021-10-24 11:08:18,009 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 11:08:18,009 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053317680] [2021-10-24 11:08:18,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 11:08:18,009 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 11:08:18,037 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-24 11:08:18,037 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1457123000] [2021-10-24 11:08:18,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 11:08:18,038 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 11:08:18,038 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b960972-feb1-4dbd-9078-1fb01f2e92e2/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 11:08:18,052 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b960972-feb1-4dbd-9078-1fb01f2e92e2/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-24 11:08:18,077 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b960972-feb1-4dbd-9078-1fb01f2e92e2/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-10-24 11:08:18,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-24 11:08:18,222 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-24 11:08:18,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-24 11:08:18,272 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-24 11:08:18,272 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-24 11:08:18,273 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-24 11:08:18,339 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b960972-feb1-4dbd-9078-1fb01f2e92e2/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2021-10-24 11:08:18,491 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b960972-feb1-4dbd-9078-1fb01f2e92e2/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable114 [2021-10-24 11:08:18,497 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-24 11:08:18,539 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 11:08:18 BoogieIcfgContainer [2021-10-24 11:08:18,539 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-24 11:08:18,540 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-24 11:08:18,541 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-24 11:08:18,541 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-24 11:08:18,541 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:06:32" (3/4) ... [2021-10-24 11:08:18,543 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-24 11:08:18,610 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b960972-feb1-4dbd-9078-1fb01f2e92e2/bin/utaipan-9zjyvhn0QE/witness.graphml [2021-10-24 11:08:18,610 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-24 11:08:18,611 INFO L168 Benchmark]: Toolchain (without parser) took 107367.26 ms. Allocated memory was 117.4 MB in the beginning and 199.2 MB in the end (delta: 81.8 MB). Free memory was 86.6 MB in the beginning and 152.1 MB in the end (delta: -65.5 MB). Peak memory consumption was 16.0 MB. Max. memory is 16.1 GB. [2021-10-24 11:08:18,612 INFO L168 Benchmark]: CDTParser took 0.35 ms. Allocated memory is still 117.4 MB. Free memory is still 70.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 11:08:18,612 INFO L168 Benchmark]: CACSL2BoogieTranslator took 332.43 ms. Allocated memory is still 117.4 MB. Free memory was 86.3 MB in the beginning and 91.9 MB in the end (delta: -5.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-24 11:08:18,612 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.77 ms. Allocated memory is still 117.4 MB. Free memory was 91.9 MB in the beginning and 90.2 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-24 11:08:18,613 INFO L168 Benchmark]: Boogie Preprocessor took 32.75 ms. Allocated memory is still 117.4 MB. Free memory was 90.2 MB in the beginning and 89.1 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-24 11:08:18,613 INFO L168 Benchmark]: RCFGBuilder took 605.42 ms. Allocated memory is still 117.4 MB. Free memory was 89.1 MB in the beginning and 75.6 MB in the end (delta: 13.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-24 11:08:18,613 INFO L168 Benchmark]: TraceAbstraction took 106264.14 ms. Allocated memory was 117.4 MB in the beginning and 199.2 MB in the end (delta: 81.8 MB). Free memory was 74.9 MB in the beginning and 154.2 MB in the end (delta: -79.2 MB). Peak memory consumption was 4.4 MB. Max. memory is 16.1 GB. [2021-10-24 11:08:18,613 INFO L168 Benchmark]: Witness Printer took 70.10 ms. Allocated memory is still 199.2 MB. Free memory was 154.2 MB in the beginning and 152.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-24 11:08:18,615 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35 ms. Allocated memory is still 117.4 MB. Free memory is still 70.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 332.43 ms. Allocated memory is still 117.4 MB. Free memory was 86.3 MB in the beginning and 91.9 MB in the end (delta: -5.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 44.77 ms. Allocated memory is still 117.4 MB. Free memory was 91.9 MB in the beginning and 90.2 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 32.75 ms. Allocated memory is still 117.4 MB. Free memory was 90.2 MB in the beginning and 89.1 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 605.42 ms. Allocated memory is still 117.4 MB. Free memory was 89.1 MB in the beginning and 75.6 MB in the end (delta: 13.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 106264.14 ms. Allocated memory was 117.4 MB in the beginning and 199.2 MB in the end (delta: 81.8 MB). Free memory was 74.9 MB in the beginning and 154.2 MB in the end (delta: -79.2 MB). Peak memory consumption was 4.4 MB. Max. memory is 16.1 GB. * Witness Printer took 70.10 ms. Allocated memory is still 199.2 MB. Free memory was 154.2 MB in the beginning and 152.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 15]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L19] int N; [L23] N = __VERIFIER_nondet_int() [L24] COND FALSE !(N <= 0) [L13] COND FALSE !(!cond) [L27] int i; [L28] long long *a = malloc(sizeof(long long)*N); [L29] long long *b = malloc(sizeof(long long)*N); [L31] a[0] = 8 [L32] b[0] = 1 [L34] i=1 VAL [N=2] [L34] COND TRUE i