./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-fpi/ifcomp.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b5237d83 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_515533c4-91f1-4cf4-883c-5205742d8966/bin/utaipan-g80aRyZoba/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_515533c4-91f1-4cf4-883c-5205742d8966/bin/utaipan-g80aRyZoba/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_515533c4-91f1-4cf4-883c-5205742d8966/bin/utaipan-g80aRyZoba/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_515533c4-91f1-4cf4-883c-5205742d8966/bin/utaipan-g80aRyZoba/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-fpi/ifcomp.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_515533c4-91f1-4cf4-883c-5205742d8966/bin/utaipan-g80aRyZoba/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_515533c4-91f1-4cf4-883c-5205742d8966/bin/utaipan-g80aRyZoba --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 0d2a65255d8b2e6b68882339bb2639d8ae744f5b340e0d3d33c067476b0c9dc7 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-b5237d8 [2022-11-22 01:54:38,709 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-22 01:54:38,711 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-22 01:54:38,732 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-22 01:54:38,733 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-22 01:54:38,734 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-22 01:54:38,735 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-22 01:54:38,737 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-22 01:54:38,739 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-22 01:54:38,740 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-22 01:54:38,741 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-22 01:54:38,742 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-22 01:54:38,743 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-22 01:54:38,744 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-22 01:54:38,745 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-22 01:54:38,747 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-22 01:54:38,747 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-22 01:54:38,748 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-22 01:54:38,750 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-22 01:54:38,752 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-22 01:54:38,753 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-22 01:54:38,755 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-22 01:54:38,756 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-22 01:54:38,757 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-22 01:54:38,760 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-22 01:54:38,760 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-22 01:54:38,761 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-22 01:54:38,762 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-22 01:54:38,762 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-22 01:54:38,763 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-22 01:54:38,764 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-22 01:54:38,765 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-22 01:54:38,765 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-22 01:54:38,766 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-22 01:54:38,767 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-22 01:54:38,767 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-22 01:54:38,768 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-22 01:54:38,768 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-22 01:54:38,769 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-22 01:54:38,769 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-22 01:54:38,770 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-22 01:54:38,771 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_515533c4-91f1-4cf4-883c-5205742d8966/bin/utaipan-g80aRyZoba/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-22 01:54:38,805 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-22 01:54:38,806 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-22 01:54:38,806 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-22 01:54:38,806 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-22 01:54:38,807 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-22 01:54:38,807 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-22 01:54:38,808 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-22 01:54:38,808 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-22 01:54:38,808 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-22 01:54:38,808 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-22 01:54:38,810 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-22 01:54:38,810 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-22 01:54:38,810 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-22 01:54:38,810 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-22 01:54:38,811 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-22 01:54:38,811 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-22 01:54:38,811 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-22 01:54:38,811 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-22 01:54:38,812 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-22 01:54:38,813 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-22 01:54:38,813 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-22 01:54:38,813 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-22 01:54:38,813 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-22 01:54:38,814 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-22 01:54:38,814 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-22 01:54:38,814 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-22 01:54:38,815 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-22 01:54:38,815 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-22 01:54:38,815 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-22 01:54:38,815 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-22 01:54:38,816 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-22 01:54:38,816 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-22 01:54:38,816 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 01:54:38,816 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-22 01:54:38,817 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-22 01:54:38,818 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-22 01:54:38,818 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-22 01:54:38,818 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-22 01:54:38,818 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-22 01:54:38,818 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-22 01:54:38,819 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-22 01:54:38,819 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_515533c4-91f1-4cf4-883c-5205742d8966/bin/utaipan-g80aRyZoba/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_515533c4-91f1-4cf4-883c-5205742d8966/bin/utaipan-g80aRyZoba Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0d2a65255d8b2e6b68882339bb2639d8ae744f5b340e0d3d33c067476b0c9dc7 [2022-11-22 01:54:39,097 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-22 01:54:39,126 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-22 01:54:39,129 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-22 01:54:39,131 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-22 01:54:39,131 INFO L275 PluginConnector]: CDTParser initialized [2022-11-22 01:54:39,133 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_515533c4-91f1-4cf4-883c-5205742d8966/bin/utaipan-g80aRyZoba/../../sv-benchmarks/c/array-fpi/ifcomp.c [2022-11-22 01:54:42,138 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-22 01:54:42,400 INFO L351 CDTParser]: Found 1 translation units. [2022-11-22 01:54:42,400 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_515533c4-91f1-4cf4-883c-5205742d8966/sv-benchmarks/c/array-fpi/ifcomp.c [2022-11-22 01:54:42,407 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_515533c4-91f1-4cf4-883c-5205742d8966/bin/utaipan-g80aRyZoba/data/60d42160e/2c31a4a7ca1e4582bccfb6064b18f916/FLAG2d4d9d579 [2022-11-22 01:54:42,421 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_515533c4-91f1-4cf4-883c-5205742d8966/bin/utaipan-g80aRyZoba/data/60d42160e/2c31a4a7ca1e4582bccfb6064b18f916 [2022-11-22 01:54:42,424 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-22 01:54:42,426 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-22 01:54:42,427 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-22 01:54:42,427 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-22 01:54:42,432 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-22 01:54:42,433 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:54:42" (1/1) ... [2022-11-22 01:54:42,435 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e54664f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:54:42, skipping insertion in model container [2022-11-22 01:54:42,436 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:54:42" (1/1) ... [2022-11-22 01:54:42,443 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-22 01:54:42,469 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-22 01:54:42,619 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_515533c4-91f1-4cf4-883c-5205742d8966/sv-benchmarks/c/array-fpi/ifcomp.c[589,602] [2022-11-22 01:54:42,647 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 01:54:42,657 INFO L203 MainTranslator]: Completed pre-run [2022-11-22 01:54:42,670 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_515533c4-91f1-4cf4-883c-5205742d8966/sv-benchmarks/c/array-fpi/ifcomp.c[589,602] [2022-11-22 01:54:42,682 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 01:54:42,695 INFO L208 MainTranslator]: Completed translation [2022-11-22 01:54:42,695 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:54:42 WrapperNode [2022-11-22 01:54:42,695 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-22 01:54:42,697 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-22 01:54:42,697 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-22 01:54:42,697 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-22 01:54:42,704 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:54:42" (1/1) ... [2022-11-22 01:54:42,724 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:54:42" (1/1) ... [2022-11-22 01:54:42,745 INFO L138 Inliner]: procedures = 16, calls = 24, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 92 [2022-11-22 01:54:42,745 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-22 01:54:42,746 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-22 01:54:42,746 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-22 01:54:42,747 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-22 01:54:42,755 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:54:42" (1/1) ... [2022-11-22 01:54:42,755 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:54:42" (1/1) ... [2022-11-22 01:54:42,757 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:54:42" (1/1) ... [2022-11-22 01:54:42,758 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:54:42" (1/1) ... [2022-11-22 01:54:42,764 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:54:42" (1/1) ... [2022-11-22 01:54:42,769 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:54:42" (1/1) ... [2022-11-22 01:54:42,771 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:54:42" (1/1) ... [2022-11-22 01:54:42,772 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:54:42" (1/1) ... [2022-11-22 01:54:42,774 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-22 01:54:42,775 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-22 01:54:42,775 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-22 01:54:42,776 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-22 01:54:42,777 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:54:42" (1/1) ... [2022-11-22 01:54:42,785 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 01:54:42,797 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_515533c4-91f1-4cf4-883c-5205742d8966/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:54:42,811 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_515533c4-91f1-4cf4-883c-5205742d8966/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-22 01:54:42,839 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_515533c4-91f1-4cf4-883c-5205742d8966/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-22 01:54:42,861 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-22 01:54:42,862 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-22 01:54:42,862 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-22 01:54:42,862 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-22 01:54:42,862 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-22 01:54:42,862 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-22 01:54:42,863 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-22 01:54:42,953 INFO L235 CfgBuilder]: Building ICFG [2022-11-22 01:54:42,955 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-22 01:54:43,171 INFO L276 CfgBuilder]: Performing block encoding [2022-11-22 01:54:43,377 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-22 01:54:43,378 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-22 01:54:43,380 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:54:43 BoogieIcfgContainer [2022-11-22 01:54:43,381 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-22 01:54:43,383 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-22 01:54:43,384 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-22 01:54:43,387 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-22 01:54:43,387 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 01:54:42" (1/3) ... [2022-11-22 01:54:43,388 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@781dea9e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:54:43, skipping insertion in model container [2022-11-22 01:54:43,388 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:54:42" (2/3) ... [2022-11-22 01:54:43,389 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@781dea9e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:54:43, skipping insertion in model container [2022-11-22 01:54:43,389 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:54:43" (3/3) ... [2022-11-22 01:54:43,390 INFO L112 eAbstractionObserver]: Analyzing ICFG ifcomp.c [2022-11-22 01:54:43,411 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-22 01:54:43,412 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-22 01:54:43,477 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-22 01:54:43,486 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@755a2b19, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-22 01:54:43,487 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-22 01:54:43,493 INFO L276 IsEmpty]: Start isEmpty. Operand has 12 states, 10 states have (on average 1.7) internal successors, (17), 11 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:54:43,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-22 01:54:43,504 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:54:43,505 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:54:43,506 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:54:43,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:54:43,512 INFO L85 PathProgramCache]: Analyzing trace with hash 1718302181, now seen corresponding path program 1 times [2022-11-22 01:54:43,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:54:43,521 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036429463] [2022-11-22 01:54:43,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:54:43,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:54:43,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:54:43,679 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:54:43,679 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036429463] [2022-11-22 01:54:43,680 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-22 01:54:43,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [881614058] [2022-11-22 01:54:43,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:54:43,681 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:54:43,681 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_515533c4-91f1-4cf4-883c-5205742d8966/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:54:43,685 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_515533c4-91f1-4cf4-883c-5205742d8966/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:54:43,711 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_515533c4-91f1-4cf4-883c-5205742d8966/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-22 01:54:43,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:54:43,821 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-22 01:54:43,827 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:54:43,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:54:43,897 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 01:54:43,898 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [881614058] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:54:43,899 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:54:43,899 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 01:54:43,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141910991] [2022-11-22 01:54:43,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:54:43,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:54:43,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:54:43,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:54:43,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:54:43,966 INFO L87 Difference]: Start difference. First operand has 12 states, 10 states have (on average 1.7) internal successors, (17), 11 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) Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:54:44,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:54:44,053 INFO L93 Difference]: Finished difference Result 22 states and 31 transitions. [2022-11-22 01:54:44,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:54:44,056 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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 [2022-11-22 01:54:44,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:54:44,064 INFO L225 Difference]: With dead ends: 22 [2022-11-22 01:54:44,064 INFO L226 Difference]: Without dead ends: 11 [2022-11-22 01:54:44,067 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:54:44,076 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 0 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 01:54:44,079 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 8 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 01:54:44,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2022-11-22 01:54:44,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2022-11-22 01:54:44,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.4) internal successors, (14), 10 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:54:44,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 14 transitions. [2022-11-22 01:54:44,109 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 14 transitions. Word has length 8 [2022-11-22 01:54:44,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:54:44,110 INFO L495 AbstractCegarLoop]: Abstraction has 11 states and 14 transitions. [2022-11-22 01:54:44,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:54:44,110 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 14 transitions. [2022-11-22 01:54:44,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-22 01:54:44,111 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:54:44,111 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:54:44,116 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_515533c4-91f1-4cf4-883c-5205742d8966/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-22 01:54:44,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_515533c4-91f1-4cf4-883c-5205742d8966/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-11-22 01:54:44,316 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:54:44,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:54:44,317 INFO L85 PathProgramCache]: Analyzing trace with hash -278726234, now seen corresponding path program 1 times [2022-11-22 01:54:44,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:54:44,317 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332934545] [2022-11-22 01:54:44,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:54:44,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:54:44,350 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-22 01:54:44,350 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [887071987] [2022-11-22 01:54:44,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:54:44,350 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:54:44,351 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_515533c4-91f1-4cf4-883c-5205742d8966/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:54:44,352 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_515533c4-91f1-4cf4-883c-5205742d8966/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:54:44,355 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_515533c4-91f1-4cf4-883c-5205742d8966/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-22 01:54:44,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:54:44,455 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-22 01:54:44,457 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:54:44,507 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-22 01:54:44,508 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 01:54:44,509 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:54:44,515 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [332934545] [2022-11-22 01:54:44,516 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-22 01:54:44,517 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [887071987] [2022-11-22 01:54:44,518 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [887071987] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:54:44,519 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:54:44,520 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-22 01:54:44,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169611788] [2022-11-22 01:54:44,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:54:44,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-22 01:54:44,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:54:44,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-22 01:54:44,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-22 01:54:44,529 INFO L87 Difference]: Start difference. First operand 11 states and 14 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:54:44,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:54:44,607 INFO L93 Difference]: Finished difference Result 24 states and 30 transitions. [2022-11-22 01:54:44,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-22 01:54:44,608 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-22 01:54:44,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:54:44,609 INFO L225 Difference]: With dead ends: 24 [2022-11-22 01:54:44,609 INFO L226 Difference]: Without dead ends: 18 [2022-11-22 01:54:44,610 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-22 01:54:44,612 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 15 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 01:54:44,614 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 6 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 01:54:44,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2022-11-22 01:54:44,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 13. [2022-11-22 01:54:44,624 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) [2022-11-22 01:54:44,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 16 transitions. [2022-11-22 01:54:44,626 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 16 transitions. Word has length 9 [2022-11-22 01:54:44,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:54:44,626 INFO L495 AbstractCegarLoop]: Abstraction has 13 states and 16 transitions. [2022-11-22 01:54:44,627 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:54:44,627 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 16 transitions. [2022-11-22 01:54:44,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-22 01:54:44,627 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:54:44,628 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:54:44,633 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_515533c4-91f1-4cf4-883c-5205742d8966/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-22 01:54:44,833 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_515533c4-91f1-4cf4-883c-5205742d8966/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:54:44,833 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:54:44,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:54:44,834 INFO L85 PathProgramCache]: Analyzing trace with hash -1790599809, now seen corresponding path program 1 times [2022-11-22 01:54:44,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:54:44,835 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046474437] [2022-11-22 01:54:44,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:54:44,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:54:44,911 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-22 01:54:44,912 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1265332907] [2022-11-22 01:54:44,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:54:44,912 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:54:44,912 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_515533c4-91f1-4cf4-883c-5205742d8966/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:54:44,914 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_515533c4-91f1-4cf4-883c-5205742d8966/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:54:44,939 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_515533c4-91f1-4cf4-883c-5205742d8966/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-22 01:54:45,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:54:45,059 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-22 01:54:45,064 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:54:45,155 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-22 01:54:45,248 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-22 01:54:45,251 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:54:45,426 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-22 01:54:45,427 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 37 treesize of output 51 [2022-11-22 01:54:45,446 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-22 01:54:45,446 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 8 [2022-11-22 01:54:45,486 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-22 01:54:45,486 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:54:45,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046474437] [2022-11-22 01:54:45,486 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-22 01:54:45,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1265332907] [2022-11-22 01:54:45,487 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1265332907] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 01:54:45,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [418204759] [2022-11-22 01:54:45,510 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-11-22 01:54:45,510 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 01:54:45,514 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 01:54:45,521 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 01:54:45,522 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 01:54:45,838 INFO L321 Elim1Store]: treesize reduction 251, result has 19.8 percent of original size [2022-11-22 01:54:45,838 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 9 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 19 case distinctions, treesize of input 60 treesize of output 105 [2022-11-22 01:54:45,886 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 18 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 52 [2022-11-22 01:54:46,052 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 7 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2022-11-22 01:54:46,309 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:54:46,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:54:46,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:54:46,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:54:46,407 INFO L321 Elim1Store]: treesize reduction 315, result has 10.8 percent of original size [2022-11-22 01:54:46,408 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 500 treesize of output 540 [2022-11-22 01:54:46,543 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:54:46,546 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 84 treesize of output 75 [2022-11-22 01:54:46,564 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:54:46,566 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 34 [2022-11-22 01:54:46,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:54:46,915 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 63 [2022-11-22 01:54:46,933 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-22 01:54:46,958 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-22 01:54:47,012 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:54:47,024 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:54:47,032 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:54:47,094 INFO L321 Elim1Store]: treesize reduction 344, result has 8.0 percent of original size [2022-11-22 01:54:47,094 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 167 treesize of output 205 [2022-11-22 01:54:47,158 INFO L321 Elim1Store]: treesize reduction 12, result has 60.0 percent of original size [2022-11-22 01:54:47,159 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 152 treesize of output 155 [2022-11-22 01:54:47,174 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:54:47,175 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 138 treesize of output 88 [2022-11-22 01:54:47,195 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:54:47,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:54:47,198 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 138 treesize of output 63 [2022-11-22 01:54:47,219 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:54:47,220 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 145 treesize of output 93 [2022-11-22 01:54:47,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:54:47,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:54:47,289 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:54:47,294 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-22 01:54:47,295 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 90 treesize of output 93 [2022-11-22 01:54:47,306 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-22 01:54:47,379 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-22 01:54:47,423 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-22 01:54:47,432 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:54:47,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:54:47,436 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:54:47,440 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-22 01:54:47,441 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 90 treesize of output 93 [2022-11-22 01:54:47,475 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-22 01:54:47,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:54:47,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:54:47,494 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:54:47,498 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-22 01:54:47,499 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 90 treesize of output 93 [2022-11-22 01:54:47,520 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 01:54:47,908 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '237#(and (= |ULTIMATE.start_main_~a~0#1.offset| 0) (= |ULTIMATE.start_main_~i~0#1| 0) (<= ~N~0 2147483647) (= (ite (= (* |ULTIMATE.start_main_~i~0#1| |ULTIMATE.start_main_~i~0#1| |ULTIMATE.start_main_~i~0#1|) |ULTIMATE.start_main_#t~mem17#1|) 1 0) |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 |ULTIMATE.start_assume_abort_if_not_#in~cond#1|) (= |ULTIMATE.start_main_~c~0#1.offset| 0) (<= 0 |ULTIMATE.start_assume_abort_if_not_~cond#1|) (< |ULTIMATE.start_main_~i~0#1| ~N~0) (= |ULTIMATE.start_main_~b~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (<= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (= (select (select |#memory_int| |ULTIMATE.start_main_~c~0#1.base|) (+ |ULTIMATE.start_main_~c~0#1.offset| (* (ite (<= (mod |ULTIMATE.start_main_~i~0#1| 4294967296) 2147483647) (mod |ULTIMATE.start_main_~i~0#1| 4294967296) (+ (mod |ULTIMATE.start_main_~i~0#1| 4294967296) (- 4294967296))) 8))) |ULTIMATE.start_main_#t~mem17#1|) (<= 0 |#StackHeapBarrier|) (<= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |#NULL.base| 0))' at error location [2022-11-22 01:54:47,909 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 01:54:47,909 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-22 01:54:47,909 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2022-11-22 01:54:47,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021324162] [2022-11-22 01:54:47,909 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-22 01:54:47,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-22 01:54:47,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:54:47,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-22 01:54:47,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2022-11-22 01:54:47,911 INFO L87 Difference]: Start difference. First operand 13 states and 16 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) [2022-11-22 01:54:48,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:54:48,083 INFO L93 Difference]: Finished difference Result 30 states and 34 transitions. [2022-11-22 01:54:48,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-22 01:54:48,083 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 [2022-11-22 01:54:48,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:54:48,084 INFO L225 Difference]: With dead ends: 30 [2022-11-22 01:54:48,084 INFO L226 Difference]: Without dead ends: 28 [2022-11-22 01:54:48,085 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2022-11-22 01:54:48,086 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 27 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 01:54:48,086 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 18 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 01:54:48,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2022-11-22 01:54:48,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 16. [2022-11-22 01:54:48,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.3333333333333333) internal successors, (20), 15 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:54:48,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 20 transitions. [2022-11-22 01:54:48,091 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 20 transitions. Word has length 11 [2022-11-22 01:54:48,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:54:48,092 INFO L495 AbstractCegarLoop]: Abstraction has 16 states and 20 transitions. [2022-11-22 01:54:48,092 INFO L496 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) [2022-11-22 01:54:48,092 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 20 transitions. [2022-11-22 01:54:48,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-22 01:54:48,093 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:54:48,093 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:54:48,104 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_515533c4-91f1-4cf4-883c-5205742d8966/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-22 01:54:48,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_515533c4-91f1-4cf4-883c-5205742d8966/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-11-22 01:54:48,294 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:54:48,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:54:48,294 INFO L85 PathProgramCache]: Analyzing trace with hash 321688004, now seen corresponding path program 2 times [2022-11-22 01:54:48,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:54:48,295 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773571994] [2022-11-22 01:54:48,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:54:48,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:54:48,359 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-22 01:54:48,359 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1571031258] [2022-11-22 01:54:48,360 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-22 01:54:48,360 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:54:48,360 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_515533c4-91f1-4cf4-883c-5205742d8966/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:54:48,361 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_515533c4-91f1-4cf4-883c-5205742d8966/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:54:48,366 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_515533c4-91f1-4cf4-883c-5205742d8966/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-22 01:54:48,455 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-22 01:54:48,455 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-22 01:54:48,456 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-22 01:54:48,457 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:54:48,507 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-22 01:54:48,507 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:54:48,545 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-22 01:54:48,546 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:54:48,546 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773571994] [2022-11-22 01:54:48,546 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-22 01:54:48,546 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1571031258] [2022-11-22 01:54:48,546 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1571031258] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 01:54:48,547 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [4846873] [2022-11-22 01:54:48,549 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-11-22 01:54:48,549 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 01:54:48,549 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 01:54:48,550 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 01:54:48,550 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 01:54:48,762 INFO L321 Elim1Store]: treesize reduction 209, result has 23.4 percent of original size [2022-11-22 01:54:48,762 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 40 treesize of output 82 [2022-11-22 01:54:49,013 INFO L321 Elim1Store]: treesize reduction 251, result has 19.8 percent of original size [2022-11-22 01:54:49,013 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 9 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 19 case distinctions, treesize of input 60 treesize of output 105 [2022-11-22 01:54:49,080 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 7 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2022-11-22 01:54:49,237 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:54:49,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:54:49,249 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:54:49,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:54:49,341 INFO L321 Elim1Store]: treesize reduction 315, result has 10.8 percent of original size [2022-11-22 01:54:49,341 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 500 treesize of output 540 [2022-11-22 01:54:49,497 INFO L321 Elim1Store]: treesize reduction 25, result has 16.7 percent of original size [2022-11-22 01:54:49,497 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 548 treesize of output 529 [2022-11-22 01:54:49,546 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:54:49,547 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 118 treesize of output 66 [2022-11-22 01:54:49,682 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-22 01:54:49,696 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:54:49,697 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 63 [2022-11-22 01:54:49,746 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-22 01:54:49,783 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:54:49,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:54:49,791 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:54:49,795 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-22 01:54:49,795 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 90 treesize of output 93 [2022-11-22 01:54:49,804 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-22 01:54:49,832 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-22 01:54:49,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:54:49,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:54:49,895 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:54:49,951 INFO L321 Elim1Store]: treesize reduction 344, result has 8.0 percent of original size [2022-11-22 01:54:49,951 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 164 treesize of output 202 [2022-11-22 01:54:49,972 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 102 treesize of output 90 [2022-11-22 01:54:49,995 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-22 01:54:49,996 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 90 treesize of output 92 [2022-11-22 01:54:50,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:54:50,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:54:50,083 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:54:50,087 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-22 01:54:50,088 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 90 treesize of output 93 [2022-11-22 01:54:50,108 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-22 01:54:50,162 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 01:54:50,757 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '392#(and (<= 0 |#NULL.base|) (= |ULTIMATE.start_main_~i~0#1| 0) (<= 0 |ULTIMATE.start_main_~a~0#1.offset|) (<= ~N~0 2147483647) (<= |ULTIMATE.start_main_~c~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~b~0#1.offset|) (= (ite (= (* |ULTIMATE.start_main_~i~0#1| |ULTIMATE.start_main_~i~0#1| |ULTIMATE.start_main_~i~0#1|) |ULTIMATE.start_main_#t~mem17#1|) 1 0) |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (<= |#NULL.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 |ULTIMATE.start_main_~c~0#1.offset|) (<= 0 |ULTIMATE.start_assume_abort_if_not_#in~cond#1|) (<= 0 |ULTIMATE.start_assume_abort_if_not_~cond#1|) (< |ULTIMATE.start_main_~i~0#1| ~N~0) (<= |#NULL.base| 0) (<= |ULTIMATE.start_main_~b~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (<= 0 |#NULL.offset|) (<= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (= (select (select |#memory_int| |ULTIMATE.start_main_~c~0#1.base|) (+ |ULTIMATE.start_main_~c~0#1.offset| (* (ite (<= (mod |ULTIMATE.start_main_~i~0#1| 4294967296) 2147483647) (mod |ULTIMATE.start_main_~i~0#1| 4294967296) (+ (mod |ULTIMATE.start_main_~i~0#1| 4294967296) (- 4294967296))) 8))) |ULTIMATE.start_main_#t~mem17#1|) (<= 0 |#StackHeapBarrier|) (<= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (<= |ULTIMATE.start_main_~a~0#1.offset| 0))' at error location [2022-11-22 01:54:50,757 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 01:54:50,758 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-22 01:54:50,758 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2022-11-22 01:54:50,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691842712] [2022-11-22 01:54:50,758 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-22 01:54:50,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-22 01:54:50,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:54:50,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-22 01:54:50,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2022-11-22 01:54:50,760 INFO L87 Difference]: Start difference. First operand 16 states and 20 transitions. Second operand has 9 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 9 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) [2022-11-22 01:54:50,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:54:50,901 INFO L93 Difference]: Finished difference Result 45 states and 56 transitions. [2022-11-22 01:54:50,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 01:54:50,903 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 9 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 12 [2022-11-22 01:54:50,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:54:50,904 INFO L225 Difference]: With dead ends: 45 [2022-11-22 01:54:50,904 INFO L226 Difference]: Without dead ends: 26 [2022-11-22 01:54:50,904 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 17 SyntacticMatches, 5 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2022-11-22 01:54:50,905 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 21 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 01:54:50,905 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 16 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 01:54:50,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-11-22 01:54:50,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 16. [2022-11-22 01:54:50,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 15 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:54:50,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 19 transitions. [2022-11-22 01:54:50,909 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 19 transitions. Word has length 12 [2022-11-22 01:54:50,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:54:50,910 INFO L495 AbstractCegarLoop]: Abstraction has 16 states and 19 transitions. [2022-11-22 01:54:50,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 9 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) [2022-11-22 01:54:50,910 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 19 transitions. [2022-11-22 01:54:50,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-22 01:54:50,910 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:54:50,910 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:54:50,921 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_515533c4-91f1-4cf4-883c-5205742d8966/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-22 01:54:51,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_515533c4-91f1-4cf4-883c-5205742d8966/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:54:51,111 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:54:51,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:54:51,111 INFO L85 PathProgramCache]: Analyzing trace with hash 944515365, now seen corresponding path program 3 times [2022-11-22 01:54:51,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:54:51,112 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601919045] [2022-11-22 01:54:51,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:54:51,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:54:51,192 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-22 01:54:51,196 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [338143752] [2022-11-22 01:54:51,196 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-22 01:54:51,196 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:54:51,197 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_515533c4-91f1-4cf4-883c-5205742d8966/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:54:51,200 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_515533c4-91f1-4cf4-883c-5205742d8966/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:54:51,219 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_515533c4-91f1-4cf4-883c-5205742d8966/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-22 01:54:51,578 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-22 01:54:51,578 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-22 01:54:51,580 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 28 conjunts are in the unsatisfiable core [2022-11-22 01:54:51,582 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:54:51,596 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-22 01:54:51,610 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-22 01:54:51,643 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-22 01:54:51,643 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:54:51,776 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-22 01:54:51,890 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-22 01:54:51,890 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 37 treesize of output 51 [2022-11-22 01:54:51,911 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-22 01:54:51,911 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 8 [2022-11-22 01:54:51,933 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2022-11-22 01:54:51,939 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 28 [2022-11-22 01:54:51,947 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-22 01:54:51,948 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:54:51,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601919045] [2022-11-22 01:54:51,948 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-22 01:54:51,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [338143752] [2022-11-22 01:54:51,948 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [338143752] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 01:54:51,949 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [463004668] [2022-11-22 01:54:51,952 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-11-22 01:54:51,953 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 01:54:51,953 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 01:54:51,953 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 01:54:51,953 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 01:54:52,150 INFO L321 Elim1Store]: treesize reduction 209, result has 23.4 percent of original size [2022-11-22 01:54:52,151 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 40 treesize of output 82 [2022-11-22 01:54:52,386 INFO L321 Elim1Store]: treesize reduction 251, result has 19.8 percent of original size [2022-11-22 01:54:52,386 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 9 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 19 case distinctions, treesize of input 60 treesize of output 105 [2022-11-22 01:54:52,449 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 7 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2022-11-22 01:54:52,589 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:54:52,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:54:52,603 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:54:52,607 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:54:52,674 INFO L321 Elim1Store]: treesize reduction 315, result has 10.8 percent of original size [2022-11-22 01:54:52,675 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 500 treesize of output 540 [2022-11-22 01:54:52,804 INFO L321 Elim1Store]: treesize reduction 25, result has 16.7 percent of original size [2022-11-22 01:54:52,804 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 548 treesize of output 529 [2022-11-22 01:54:52,825 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-22 01:54:52,825 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 118 treesize of output 95 [2022-11-22 01:54:52,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:54:52,977 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 63 [2022-11-22 01:54:52,985 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-22 01:54:53,003 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-22 01:54:53,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:54:53,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:54:53,047 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:54:53,101 INFO L321 Elim1Store]: treesize reduction 344, result has 8.0 percent of original size [2022-11-22 01:54:53,101 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 164 treesize of output 202 [2022-11-22 01:54:53,129 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 102 treesize of output 90 [2022-11-22 01:54:53,150 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:54:53,151 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 90 treesize of output 63 [2022-11-22 01:54:53,218 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:54:53,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:54:53,224 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:54:53,229 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-22 01:54:53,229 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 90 treesize of output 93 [2022-11-22 01:54:53,240 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-22 01:54:53,283 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-22 01:54:53,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:54:53,320 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:54:53,321 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:54:53,325 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-22 01:54:53,326 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 90 treesize of output 93 [2022-11-22 01:54:53,335 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-22 01:54:53,350 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 01:54:53,724 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '584#(and (= |ULTIMATE.start_main_~a~0#1.offset| 0) (= |ULTIMATE.start_main_~i~0#1| 0) (<= ~N~0 2147483647) (= (ite (= (* |ULTIMATE.start_main_~i~0#1| |ULTIMATE.start_main_~i~0#1| |ULTIMATE.start_main_~i~0#1|) |ULTIMATE.start_main_#t~mem17#1|) 1 0) |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 |ULTIMATE.start_assume_abort_if_not_#in~cond#1|) (= |ULTIMATE.start_main_~c~0#1.offset| 0) (<= 0 |ULTIMATE.start_assume_abort_if_not_~cond#1|) (< |ULTIMATE.start_main_~i~0#1| ~N~0) (= |ULTIMATE.start_main_~b~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (<= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (= (select (select |#memory_int| |ULTIMATE.start_main_~c~0#1.base|) (+ |ULTIMATE.start_main_~c~0#1.offset| (* (ite (<= (mod |ULTIMATE.start_main_~i~0#1| 4294967296) 2147483647) (mod |ULTIMATE.start_main_~i~0#1| 4294967296) (+ (mod |ULTIMATE.start_main_~i~0#1| 4294967296) (- 4294967296))) 8))) |ULTIMATE.start_main_#t~mem17#1|) (<= 0 |#StackHeapBarrier|) (<= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |#NULL.base| 0))' at error location [2022-11-22 01:54:53,724 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 01:54:53,724 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-22 01:54:53,724 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2022-11-22 01:54:53,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586634253] [2022-11-22 01:54:53,724 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-22 01:54:53,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-22 01:54:53,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:54:53,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-22 01:54:53,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2022-11-22 01:54:53,726 INFO L87 Difference]: Start difference. First operand 16 states and 19 transitions. Second operand has 10 states, 10 states have (on average 2.1) internal successors, (21), 10 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:54:54,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:54:54,013 INFO L93 Difference]: Finished difference Result 43 states and 48 transitions. [2022-11-22 01:54:54,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-22 01:54:54,013 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.1) internal successors, (21), 10 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-11-22 01:54:54,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:54:54,014 INFO L225 Difference]: With dead ends: 43 [2022-11-22 01:54:54,014 INFO L226 Difference]: Without dead ends: 41 [2022-11-22 01:54:54,015 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 24 SyntacticMatches, 3 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=85, Invalid=335, Unknown=0, NotChecked=0, Total=420 [2022-11-22 01:54:54,015 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 34 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-22 01:54:54,016 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 31 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-22 01:54:54,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2022-11-22 01:54:54,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 20. [2022-11-22 01:54:54,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.3157894736842106) internal successors, (25), 19 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:54:54,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 25 transitions. [2022-11-22 01:54:54,021 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 25 transitions. Word has length 14 [2022-11-22 01:54:54,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:54:54,021 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 25 transitions. [2022-11-22 01:54:54,022 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.1) internal successors, (21), 10 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:54:54,022 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 25 transitions. [2022-11-22 01:54:54,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-22 01:54:54,022 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:54:54,022 INFO L195 NwaCegarLoop]: trace histogram [4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:54:54,036 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_515533c4-91f1-4cf4-883c-5205742d8966/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-11-22 01:54:54,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_515533c4-91f1-4cf4-883c-5205742d8966/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:54:54,232 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:54:54,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:54:54,232 INFO L85 PathProgramCache]: Analyzing trace with hash 1303797829, now seen corresponding path program 4 times [2022-11-22 01:54:54,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:54:54,232 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145787618] [2022-11-22 01:54:54,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:54:54,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:54:54,297 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-22 01:54:54,297 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [518916679] [2022-11-22 01:54:54,307 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-22 01:54:54,307 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:54:54,308 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_515533c4-91f1-4cf4-883c-5205742d8966/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:54:54,309 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_515533c4-91f1-4cf4-883c-5205742d8966/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:54:54,331 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_515533c4-91f1-4cf4-883c-5205742d8966/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-22 01:54:54,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:54:54,414 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-22 01:54:54,416 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:54:54,482 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-22 01:54:54,482 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:54:54,543 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-22 01:54:54,544 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:54:54,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145787618] [2022-11-22 01:54:54,544 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-22 01:54:54,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [518916679] [2022-11-22 01:54:54,544 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [518916679] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 01:54:54,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [521739538] [2022-11-22 01:54:54,547 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-11-22 01:54:54,548 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 01:54:54,548 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 01:54:54,548 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 01:54:54,548 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 01:54:54,743 INFO L321 Elim1Store]: treesize reduction 251, result has 19.8 percent of original size [2022-11-22 01:54:54,744 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 9 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 19 case distinctions, treesize of input 60 treesize of output 105 [2022-11-22 01:54:54,791 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 18 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 52 [2022-11-22 01:54:54,844 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 7 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2022-11-22 01:54:55,026 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:54:55,032 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:54:55,033 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:54:55,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:54:55,122 INFO L321 Elim1Store]: treesize reduction 315, result has 10.8 percent of original size [2022-11-22 01:54:55,123 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 500 treesize of output 540 [2022-11-22 01:54:55,238 INFO L321 Elim1Store]: treesize reduction 25, result has 16.7 percent of original size [2022-11-22 01:54:55,239 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 543 treesize of output 528 [2022-11-22 01:54:55,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:54:55,288 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 113 treesize of output 38 [2022-11-22 01:54:55,472 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-22 01:54:55,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:54:55,485 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 63 [2022-11-22 01:54:55,507 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-22 01:54:55,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:54:55,552 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:54:55,558 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:54:55,633 INFO L321 Elim1Store]: treesize reduction 344, result has 8.0 percent of original size [2022-11-22 01:54:55,633 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 164 treesize of output 202 [2022-11-22 01:54:55,690 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:54:55,691 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 90 treesize of output 63 [2022-11-22 01:54:55,735 INFO L321 Elim1Store]: treesize reduction 12, result has 60.0 percent of original size [2022-11-22 01:54:55,735 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 181 treesize of output 180 [2022-11-22 01:54:55,753 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:54:55,754 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 163 treesize of output 88 [2022-11-22 01:54:55,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:54:55,768 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:54:55,769 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 163 treesize of output 38 [2022-11-22 01:54:55,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:54:55,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:54:55,827 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:54:55,833 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-22 01:54:55,833 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 90 treesize of output 93 [2022-11-22 01:54:55,843 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-22 01:54:55,863 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-22 01:54:55,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:54:55,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:54:55,920 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:54:55,979 INFO L321 Elim1Store]: treesize reduction 344, result has 8.0 percent of original size [2022-11-22 01:54:55,979 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 164 treesize of output 202 [2022-11-22 01:54:56,012 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 159 treesize of output 145 [2022-11-22 01:54:56,037 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-22 01:54:56,037 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 145 treesize of output 122 [2022-11-22 01:54:56,085 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-22 01:54:56,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:54:56,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:54:56,106 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:54:56,112 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-22 01:54:56,112 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 90 treesize of output 93 [2022-11-22 01:54:56,130 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 01:54:56,479 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '796#(and (= |ULTIMATE.start_main_~a~0#1.offset| 0) (= |ULTIMATE.start_main_~i~0#1| 0) (<= ~N~0 2147483647) (= (ite (= (* |ULTIMATE.start_main_~i~0#1| |ULTIMATE.start_main_~i~0#1| |ULTIMATE.start_main_~i~0#1|) |ULTIMATE.start_main_#t~mem17#1|) 1 0) |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 |ULTIMATE.start_assume_abort_if_not_#in~cond#1|) (= |ULTIMATE.start_main_~c~0#1.offset| 0) (<= 0 |ULTIMATE.start_assume_abort_if_not_~cond#1|) (< |ULTIMATE.start_main_~i~0#1| ~N~0) (= |ULTIMATE.start_main_~b~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (<= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (= (select (select |#memory_int| |ULTIMATE.start_main_~c~0#1.base|) (+ |ULTIMATE.start_main_~c~0#1.offset| (* (ite (<= (mod |ULTIMATE.start_main_~i~0#1| 4294967296) 2147483647) (mod |ULTIMATE.start_main_~i~0#1| 4294967296) (+ (mod |ULTIMATE.start_main_~i~0#1| 4294967296) (- 4294967296))) 8))) |ULTIMATE.start_main_#t~mem17#1|) (<= 0 |#StackHeapBarrier|) (<= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |#NULL.base| 0))' at error location [2022-11-22 01:54:56,480 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 01:54:56,480 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-22 01:54:56,480 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2022-11-22 01:54:56,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538403845] [2022-11-22 01:54:56,480 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-22 01:54:56,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-22 01:54:56,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:54:56,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-22 01:54:56,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2022-11-22 01:54:56,481 INFO L87 Difference]: Start difference. First operand 20 states and 25 transitions. Second operand has 12 states, 12 states have (on average 1.5833333333333333) internal successors, (19), 12 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:54:56,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:54:56,683 INFO L93 Difference]: Finished difference Result 65 states and 78 transitions. [2022-11-22 01:54:56,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-22 01:54:56,684 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.5833333333333333) internal successors, (19), 12 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 16 [2022-11-22 01:54:56,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:54:56,685 INFO L225 Difference]: With dead ends: 65 [2022-11-22 01:54:56,685 INFO L226 Difference]: Without dead ends: 50 [2022-11-22 01:54:56,685 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 27 SyntacticMatches, 4 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=91, Invalid=289, Unknown=0, NotChecked=0, Total=380 [2022-11-22 01:54:56,686 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 47 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-22 01:54:56,687 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 27 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-22 01:54:56,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2022-11-22 01:54:56,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 33. [2022-11-22 01:54:56,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 32 states have (on average 1.25) internal successors, (40), 32 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:54:56,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 40 transitions. [2022-11-22 01:54:56,696 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 40 transitions. Word has length 16 [2022-11-22 01:54:56,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:54:56,696 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 40 transitions. [2022-11-22 01:54:56,696 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.5833333333333333) internal successors, (19), 12 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:54:56,696 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 40 transitions. [2022-11-22 01:54:56,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-22 01:54:56,697 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:54:56,697 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:54:56,704 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_515533c4-91f1-4cf4-883c-5205742d8966/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-11-22 01:54:56,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_515533c4-91f1-4cf4-883c-5205742d8966/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:54:56,903 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:54:56,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:54:56,904 INFO L85 PathProgramCache]: Analyzing trace with hash 1731625634, now seen corresponding path program 1 times [2022-11-22 01:54:56,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:54:56,904 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775564898] [2022-11-22 01:54:56,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:54:56,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:54:56,934 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-22 01:54:56,934 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1875682530] [2022-11-22 01:54:56,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:54:56,936 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:54:56,937 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_515533c4-91f1-4cf4-883c-5205742d8966/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:54:56,938 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_515533c4-91f1-4cf4-883c-5205742d8966/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:54:56,941 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_515533c4-91f1-4cf4-883c-5205742d8966/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-22 01:54:57,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:54:57,143 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 59 conjunts are in the unsatisfiable core [2022-11-22 01:54:57,148 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:54:57,165 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-22 01:54:57,165 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 40 [2022-11-22 01:54:57,206 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-22 01:54:57,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:54:57,251 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 25 [2022-11-22 01:54:57,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:54:57,349 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 32 [2022-11-22 01:54:57,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:54:57,415 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:54:57,425 INFO L321 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-11-22 01:54:57,425 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 54 treesize of output 47 [2022-11-22 01:54:57,549 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:54:57,550 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:54:57,554 INFO L321 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-11-22 01:54:57,554 INFO L350 Elim1Store]: Elim1 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 58 treesize of output 54 [2022-11-22 01:54:57,634 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:54:57,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:54:57,662 INFO L321 Elim1Store]: treesize reduction 68, result has 18.1 percent of original size [2022-11-22 01:54:57,663 INFO L350 Elim1Store]: Elim1 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 12 case distinctions, treesize of input 71 treesize of output 66 [2022-11-22 01:54:57,949 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-22 01:54:57,950 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 83 treesize of output 51 [2022-11-22 01:54:57,975 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:54:57,975 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:54:58,467 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-22 01:54:58,685 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse7 (* (mod |c_ULTIMATE.start_main_~i~0#1| 4294967296) 8)) (.cse6 (+ |c_ULTIMATE.start_main_~i~0#1| 1))) (let ((.cse5 (= |c_ULTIMATE.start_main_~i~0#1| 0)) (.cse1 (+ (* (mod .cse6 4294967296) 8) |c_ULTIMATE.start_main_~c~0#1.offset|)) (.cse3 (+ .cse7 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse2 (+ .cse7 |c_ULTIMATE.start_main_~c~0#1.offset|)) (.cse4 (+ 8 |c_ULTIMATE.start_main_~c~0#1.offset|))) (and (or (= (select (let ((.cse0 (store (select |c_#memory_int| |c_ULTIMATE.start_main_~c~0#1.base|) |c_ULTIMATE.start_main_~c~0#1.offset| 0))) (store .cse0 .cse1 (+ (select .cse0 .cse2) (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~c~0#1.base| .cse0) |c_ULTIMATE.start_main_~b~0#1.base|) .cse3)))) .cse4) 1) (not .cse5)) (or .cse5 (and (not (= .cse6 0)) (forall ((v_ArrVal_376 (Array Int Int))) (= (select (store v_ArrVal_376 .cse1 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~c~0#1.base| v_ArrVal_376) |c_ULTIMATE.start_main_~b~0#1.base|) .cse3) (select v_ArrVal_376 .cse2))) .cse4) 1))))))) is different from false [2022-11-22 01:55:01,761 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse7 (* (mod |c_ULTIMATE.start_main_~i~0#1| 4294967296) 8))) (let ((.cse0 (= |c_ULTIMATE.start_main_~i~0#1| 0)) (.cse5 (+ (* (mod (+ |c_ULTIMATE.start_main_~i~0#1| 1) 4294967296) 8) |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse3 (+ .cse7 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse2 (+ .cse7 |c_ULTIMATE.start_main_~b~0#1.offset|))) (and (or (not .cse0) (forall ((v_ArrVal_374 Int)) (let ((.cse1 (store (select |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset| 1))) (or (not (<= (+ (select .cse1 .cse2) (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse1) |c_ULTIMATE.start_main_~a~0#1.base|) .cse3)) v_ArrVal_374)) (= (select (select (let ((.cse4 (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| (store .cse1 .cse5 v_ArrVal_374)))) (store .cse4 |c_ULTIMATE.start_main_~c~0#1.base| (store (select .cse4 |c_ULTIMATE.start_main_~c~0#1.base|) |c_ULTIMATE.start_main_~c~0#1.offset| 0))) |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset|) 1))))) (or .cse0 (forall ((v_ArrVal_374 Int) (v_ArrVal_371 (Array Int Int))) (or (= (select (select (let ((.cse6 (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| (store v_ArrVal_371 .cse5 v_ArrVal_374)))) (store .cse6 |c_ULTIMATE.start_main_~c~0#1.base| (store (select .cse6 |c_ULTIMATE.start_main_~c~0#1.base|) |c_ULTIMATE.start_main_~c~0#1.offset| 0))) |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset|) 1) (not (<= (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| v_ArrVal_371) |c_ULTIMATE.start_main_~a~0#1.base|) .cse3) (select v_ArrVal_371 .cse2)) v_ArrVal_374)))))))) is different from false [2022-11-22 01:55:46,820 WARN L233 SmtUtils]: Spent 43.36s on a formula simplification. DAG size of input: 119 DAG size of output: 74 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 01:55:46,867 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-22 01:55:46,867 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 33 treesize of output 47 [2022-11-22 01:55:46,881 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-22 01:55:46,881 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 8 [2022-11-22 01:55:47,069 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-22 01:55:47,069 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 159 treesize of output 111 [2022-11-22 01:55:47,228 INFO L321 Elim1Store]: treesize reduction 12, result has 52.0 percent of original size [2022-11-22 01:55:47,228 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 1154 treesize of output 1130 [2022-11-22 01:55:47,340 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-22 01:55:47,340 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 914 treesize of output 913 [2022-11-22 01:55:47,426 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-22 01:55:47,427 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 871 treesize of output 897 [2022-11-22 01:55:48,133 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2022-11-22 01:55:49,313 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 559 treesize of output 557 [2022-11-22 01:55:51,484 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 4 refuted. 1 times theorem prover too weak. 0 trivial. 4 not checked. [2022-11-22 01:55:51,485 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:55:51,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775564898] [2022-11-22 01:55:51,485 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-22 01:55:51,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1875682530] [2022-11-22 01:55:51,485 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1875682530] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 01:55:51,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1362197333] [2022-11-22 01:55:51,487 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2022-11-22 01:55:51,487 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 01:55:51,488 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 01:55:51,488 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 01:55:51,488 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 01:55:51,737 INFO L321 Elim1Store]: treesize reduction 209, result has 23.4 percent of original size [2022-11-22 01:55:51,737 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 40 treesize of output 82 [2022-11-22 01:55:52,036 INFO L321 Elim1Store]: treesize reduction 251, result has 19.8 percent of original size [2022-11-22 01:55:52,037 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 9 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 19 case distinctions, treesize of input 60 treesize of output 105 [2022-11-22 01:55:52,090 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 7 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2022-11-22 01:55:52,234 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:55:52,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:55:52,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:55:52,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:55:52,365 INFO L321 Elim1Store]: treesize reduction 315, result has 10.8 percent of original size [2022-11-22 01:55:52,366 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 500 treesize of output 540 [2022-11-22 01:55:52,490 INFO L321 Elim1Store]: treesize reduction 25, result has 16.7 percent of original size [2022-11-22 01:55:52,490 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 489 treesize of output 476 [2022-11-22 01:55:52,521 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-22 01:55:52,522 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 61 treesize of output 63 [2022-11-22 01:55:52,724 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-22 01:55:52,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:55:52,737 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 63 [2022-11-22 01:55:52,772 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-22 01:55:52,804 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:55:52,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:55:52,820 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:55:52,884 INFO L321 Elim1Store]: treesize reduction 344, result has 8.0 percent of original size [2022-11-22 01:55:52,884 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 164 treesize of output 202 [2022-11-22 01:55:52,954 INFO L321 Elim1Store]: treesize reduction 12, result has 60.0 percent of original size [2022-11-22 01:55:52,955 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 152 treesize of output 153 [2022-11-22 01:55:52,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:55:52,971 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 136 treesize of output 61 [2022-11-22 01:55:52,985 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:55:52,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:55:52,988 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 136 treesize of output 36 [2022-11-22 01:55:53,029 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-22 01:55:53,030 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 61 treesize of output 63 [2022-11-22 01:55:53,069 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-22 01:55:53,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:55:53,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:55:53,090 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:55:53,095 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-22 01:55:53,095 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 90 treesize of output 93 [2022-11-22 01:55:53,116 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-22 01:55:53,155 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:55:53,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:55:53,173 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:55:53,244 INFO L321 Elim1Store]: treesize reduction 344, result has 8.0 percent of original size [2022-11-22 01:55:53,245 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 164 treesize of output 202 [2022-11-22 01:55:53,307 INFO L321 Elim1Store]: treesize reduction 12, result has 60.0 percent of original size [2022-11-22 01:55:53,308 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 152 treesize of output 155 [2022-11-22 01:55:53,320 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:55:53,321 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 138 treesize of output 88 [2022-11-22 01:55:53,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:55:53,337 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:55:53,338 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:55:53,339 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 138 treesize of output 63 [2022-11-22 01:55:53,357 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:55:53,358 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 145 treesize of output 93 [2022-11-22 01:55:53,388 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-22 01:55:53,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:55:53,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:55:53,407 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:55:53,411 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-22 01:55:53,412 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 90 treesize of output 93 [2022-11-22 01:55:53,536 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 01:55:54,518 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1085#(and (<= 0 |#NULL.base|) (<= 0 |ULTIMATE.start_main_~a~0#1.offset|) (<= ~N~0 2147483647) (<= |ULTIMATE.start_main_~c~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~b~0#1.offset|) (= (ite (= (* |ULTIMATE.start_main_~i~0#1| |ULTIMATE.start_main_~i~0#1| |ULTIMATE.start_main_~i~0#1|) |ULTIMATE.start_main_#t~mem17#1|) 1 0) |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (<= |#NULL.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 |ULTIMATE.start_main_~c~0#1.offset|) (<= 0 |ULTIMATE.start_assume_abort_if_not_#in~cond#1|) (<= 0 |ULTIMATE.start_main_~i~0#1|) (<= 0 |ULTIMATE.start_assume_abort_if_not_~cond#1|) (< |ULTIMATE.start_main_~i~0#1| ~N~0) (<= |#NULL.base| 0) (<= |ULTIMATE.start_main_~b~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (<= 0 |#NULL.offset|) (<= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (= (select (select |#memory_int| |ULTIMATE.start_main_~c~0#1.base|) (+ |ULTIMATE.start_main_~c~0#1.offset| (* (ite (<= (mod |ULTIMATE.start_main_~i~0#1| 4294967296) 2147483647) (mod |ULTIMATE.start_main_~i~0#1| 4294967296) (+ (mod |ULTIMATE.start_main_~i~0#1| 4294967296) (- 4294967296))) 8))) |ULTIMATE.start_main_#t~mem17#1|) (<= 0 |#StackHeapBarrier|) (<= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (<= |ULTIMATE.start_main_~a~0#1.offset| 0))' at error location [2022-11-22 01:55:54,519 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 01:55:54,519 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-22 01:55:54,519 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 26 [2022-11-22 01:55:54,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521482234] [2022-11-22 01:55:54,519 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-22 01:55:54,519 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-22 01:55:54,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:55:54,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-22 01:55:54,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=692, Unknown=4, NotChecked=110, Total=930 [2022-11-22 01:55:54,526 INFO L87 Difference]: Start difference. First operand 33 states and 40 transitions. Second operand has 26 states, 26 states have (on average 1.2307692307692308) internal successors, (32), 26 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:55:54,887 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse9 (* (mod |c_ULTIMATE.start_main_~i~0#1| 4294967296) 8)) (.cse1 (store (select |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset| 1))) (let ((.cse3 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse1) |c_ULTIMATE.start_main_~a~0#1.base|)) (.cse0 (= |c_ULTIMATE.start_main_~i~0#1| 0)) (.cse6 (+ (* (mod (+ |c_ULTIMATE.start_main_~i~0#1| 1) 4294967296) 8) |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse4 (+ .cse9 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse2 (+ .cse9 |c_ULTIMATE.start_main_~b~0#1.offset|))) (and (or (not .cse0) (forall ((v_ArrVal_374 Int)) (or (not (<= (+ (select .cse1 .cse2) (select .cse3 .cse4)) v_ArrVal_374)) (= (select (select (let ((.cse5 (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| (store .cse1 .cse6 v_ArrVal_374)))) (store .cse5 |c_ULTIMATE.start_main_~c~0#1.base| (store (select .cse5 |c_ULTIMATE.start_main_~c~0#1.base|) |c_ULTIMATE.start_main_~c~0#1.offset| 0))) |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset|) 1)))) (or (not (= |c_ULTIMATE.start_main_~c~0#1.offset| |c_ULTIMATE.start_main_~b~0#1.offset|)) (not (= |c_ULTIMATE.start_main_~b~0#1.base| |c_ULTIMATE.start_main_~c~0#1.base|))) (forall ((v_ArrVal_374 Int)) (or (= (select (select (let ((.cse7 (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| (store .cse1 (+ 8 |c_ULTIMATE.start_main_~b~0#1.offset|) v_ArrVal_374)))) (store .cse7 |c_ULTIMATE.start_main_~c~0#1.base| (store (select .cse7 |c_ULTIMATE.start_main_~c~0#1.base|) |c_ULTIMATE.start_main_~c~0#1.offset| 0))) |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset|) 1) (not (<= (+ (select .cse3 |c_ULTIMATE.start_main_~a~0#1.offset|) 1) v_ArrVal_374)))) (or .cse0 (forall ((v_ArrVal_374 Int) (v_ArrVal_371 (Array Int Int))) (or (= (select (select (let ((.cse8 (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| (store v_ArrVal_371 .cse6 v_ArrVal_374)))) (store .cse8 |c_ULTIMATE.start_main_~c~0#1.base| (store (select .cse8 |c_ULTIMATE.start_main_~c~0#1.base|) |c_ULTIMATE.start_main_~c~0#1.offset| 0))) |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset|) 1) (not (<= (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| v_ArrVal_371) |c_ULTIMATE.start_main_~a~0#1.base|) .cse4) (select v_ArrVal_371 .cse2)) v_ArrVal_374)))))))) is different from false [2022-11-22 01:56:03,570 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2022-11-22 01:56:09,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:56:09,007 INFO L93 Difference]: Finished difference Result 49 states and 55 transitions. [2022-11-22 01:56:09,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-11-22 01:56:09,008 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 1.2307692307692308) internal successors, (32), 26 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-11-22 01:56:09,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:56:09,009 INFO L225 Difference]: With dead ends: 49 [2022-11-22 01:56:09,009 INFO L226 Difference]: Without dead ends: 28 [2022-11-22 01:56:09,010 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 18 SyntacticMatches, 4 SemanticMatches, 45 ConstructedPredicates, 3 IntricatePredicates, 1 DeprecatedPredicates, 467 ImplicationChecksByTransitivity, 60.2s TimeCoverageRelationStatistics Valid=318, Invalid=1578, Unknown=8, NotChecked=258, Total=2162 [2022-11-22 01:56:09,011 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 75 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 228 mSolverCounterSat, 34 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 327 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 228 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 57 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2022-11-22 01:56:09,011 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 37 Invalid, 327 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 228 Invalid, 8 Unknown, 57 Unchecked, 5.1s Time] [2022-11-22 01:56:09,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2022-11-22 01:56:09,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 27. [2022-11-22 01:56:09,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.2307692307692308) internal successors, (32), 26 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:56:09,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 32 transitions. [2022-11-22 01:56:09,020 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 32 transitions. Word has length 17 [2022-11-22 01:56:09,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:56:09,020 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 32 transitions. [2022-11-22 01:56:09,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 1.2307692307692308) internal successors, (32), 26 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:56:09,020 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 32 transitions. [2022-11-22 01:56:09,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-22 01:56:09,021 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:56:09,021 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:56:09,028 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_515533c4-91f1-4cf4-883c-5205742d8966/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-22 01:56:09,229 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_515533c4-91f1-4cf4-883c-5205742d8966/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-22 01:56:09,229 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:56:09,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:56:09,230 INFO L85 PathProgramCache]: Analyzing trace with hash -2057325180, now seen corresponding path program 5 times [2022-11-22 01:56:09,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:56:09,230 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022757775] [2022-11-22 01:56:09,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:56:09,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:56:09,324 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-22 01:56:09,324 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [96614947] [2022-11-22 01:56:09,324 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-22 01:56:09,324 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:56:09,325 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_515533c4-91f1-4cf4-883c-5205742d8966/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:56:09,335 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_515533c4-91f1-4cf4-883c-5205742d8966/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:56:09,339 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_515533c4-91f1-4cf4-883c-5205742d8966/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-22 01:56:09,605 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-22 01:56:09,605 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-22 01:56:09,607 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-22 01:56:09,609 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:56:09,728 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-22 01:56:09,728 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:56:09,828 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-22 01:56:09,828 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:56:09,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022757775] [2022-11-22 01:56:09,828 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-22 01:56:09,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [96614947] [2022-11-22 01:56:09,828 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [96614947] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 01:56:09,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [412092649] [2022-11-22 01:56:09,830 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-11-22 01:56:09,831 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 01:56:09,831 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 01:56:09,831 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 01:56:09,831 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 01:56:10,158 INFO L321 Elim1Store]: treesize reduction 251, result has 19.8 percent of original size [2022-11-22 01:56:10,158 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 9 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 19 case distinctions, treesize of input 60 treesize of output 105 [2022-11-22 01:56:10,194 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 18 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 52 [2022-11-22 01:56:10,237 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 7 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2022-11-22 01:56:10,364 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:56:10,373 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:10,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:10,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:10,476 INFO L321 Elim1Store]: treesize reduction 315, result has 10.8 percent of original size [2022-11-22 01:56:10,476 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 500 treesize of output 540 [2022-11-22 01:56:10,568 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:10,572 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 143 treesize of output 132 [2022-11-22 01:56:10,595 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:56:10,597 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 118 treesize of output 66 [2022-11-22 01:56:10,797 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-22 01:56:10,809 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:10,811 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 63 [2022-11-22 01:56:10,830 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-22 01:56:10,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:10,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:10,883 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:56:10,949 INFO L321 Elim1Store]: treesize reduction 344, result has 8.0 percent of original size [2022-11-22 01:56:10,949 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 164 treesize of output 202 [2022-11-22 01:56:11,046 INFO L321 Elim1Store]: treesize reduction 12, result has 60.0 percent of original size [2022-11-22 01:56:11,046 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 152 treesize of output 155 [2022-11-22 01:56:11,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:11,061 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 138 treesize of output 88 [2022-11-22 01:56:11,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:11,083 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:56:11,084 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 138 treesize of output 63 [2022-11-22 01:56:11,101 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:56:11,102 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 145 treesize of output 93 [2022-11-22 01:56:11,161 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:11,171 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:11,172 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:56:11,176 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-22 01:56:11,177 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 90 treesize of output 93 [2022-11-22 01:56:11,188 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-22 01:56:11,205 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-22 01:56:11,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:11,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:11,262 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:56:11,324 INFO L321 Elim1Store]: treesize reduction 344, result has 8.0 percent of original size [2022-11-22 01:56:11,325 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 167 treesize of output 205 [2022-11-22 01:56:11,371 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-22 01:56:11,371 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 61 treesize of output 63 [2022-11-22 01:56:11,422 INFO L321 Elim1Store]: treesize reduction 12, result has 60.0 percent of original size [2022-11-22 01:56:11,422 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 152 treesize of output 153 [2022-11-22 01:56:11,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:11,440 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 136 treesize of output 61 [2022-11-22 01:56:11,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:11,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:11,454 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:56:11,455 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 136 treesize of output 36 [2022-11-22 01:56:11,511 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-22 01:56:11,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:11,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:11,537 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:56:11,542 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-22 01:56:11,542 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 90 treesize of output 93 [2022-11-22 01:56:11,562 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 01:56:11,979 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1365#(and (= |ULTIMATE.start_main_~a~0#1.offset| 0) (= |ULTIMATE.start_main_~i~0#1| 0) (<= ~N~0 2147483647) (= (ite (= (* |ULTIMATE.start_main_~i~0#1| |ULTIMATE.start_main_~i~0#1| |ULTIMATE.start_main_~i~0#1|) |ULTIMATE.start_main_#t~mem17#1|) 1 0) |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 |ULTIMATE.start_assume_abort_if_not_#in~cond#1|) (= |ULTIMATE.start_main_~c~0#1.offset| 0) (<= 0 |ULTIMATE.start_assume_abort_if_not_~cond#1|) (< |ULTIMATE.start_main_~i~0#1| ~N~0) (= |ULTIMATE.start_main_~b~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (<= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (= (select (select |#memory_int| |ULTIMATE.start_main_~c~0#1.base|) (+ |ULTIMATE.start_main_~c~0#1.offset| (* (ite (<= (mod |ULTIMATE.start_main_~i~0#1| 4294967296) 2147483647) (mod |ULTIMATE.start_main_~i~0#1| 4294967296) (+ (mod |ULTIMATE.start_main_~i~0#1| 4294967296) (- 4294967296))) 8))) |ULTIMATE.start_main_#t~mem17#1|) (<= 0 |#StackHeapBarrier|) (<= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |#NULL.base| 0))' at error location [2022-11-22 01:56:11,979 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 01:56:11,979 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-22 01:56:11,979 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 15 [2022-11-22 01:56:11,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634807798] [2022-11-22 01:56:11,979 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-22 01:56:11,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-22 01:56:11,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:56:11,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-22 01:56:11,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=293, Unknown=0, NotChecked=0, Total=380 [2022-11-22 01:56:11,980 INFO L87 Difference]: Start difference. First operand 27 states and 32 transitions. Second operand has 15 states, 15 states have (on average 1.4) internal successors, (21), 15 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:56:12,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:56:12,469 INFO L93 Difference]: Finished difference Result 89 states and 102 transitions. [2022-11-22 01:56:12,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-22 01:56:12,472 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.4) internal successors, (21), 15 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-11-22 01:56:12,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:56:12,476 INFO L225 Difference]: With dead ends: 89 [2022-11-22 01:56:12,476 INFO L226 Difference]: Without dead ends: 69 [2022-11-22 01:56:12,477 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 29 SyntacticMatches, 5 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 163 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=152, Invalid=498, Unknown=0, NotChecked=0, Total=650 [2022-11-22 01:56:12,478 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 145 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-22 01:56:12,479 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 51 Invalid, 226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-22 01:56:12,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2022-11-22 01:56:12,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 40. [2022-11-22 01:56:12,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 39 states have (on average 1.2564102564102564) internal successors, (49), 39 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:56:12,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 49 transitions. [2022-11-22 01:56:12,507 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 49 transitions. Word has length 18 [2022-11-22 01:56:12,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:56:12,507 INFO L495 AbstractCegarLoop]: Abstraction has 40 states and 49 transitions. [2022-11-22 01:56:12,507 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 1.4) internal successors, (21), 15 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:56:12,507 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 49 transitions. [2022-11-22 01:56:12,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-22 01:56:12,508 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:56:12,508 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:56:12,520 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_515533c4-91f1-4cf4-883c-5205742d8966/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-22 01:56:12,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_515533c4-91f1-4cf4-883c-5205742d8966/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-11-22 01:56:12,715 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:56:12,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:56:12,715 INFO L85 PathProgramCache]: Analyzing trace with hash 616027459, now seen corresponding path program 2 times [2022-11-22 01:56:12,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:56:12,716 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048918961] [2022-11-22 01:56:12,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:56:12,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:56:12,742 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-22 01:56:12,742 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2144079556] [2022-11-22 01:56:12,742 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-22 01:56:12,742 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:56:12,743 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_515533c4-91f1-4cf4-883c-5205742d8966/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:56:12,744 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_515533c4-91f1-4cf4-883c-5205742d8966/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:56:12,756 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_515533c4-91f1-4cf4-883c-5205742d8966/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-22 01:56:13,150 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-22 01:56:13,151 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-22 01:56:13,153 INFO L263 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-22 01:56:13,153 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:56:13,262 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-22 01:56:13,262 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:56:13,335 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-22 01:56:13,335 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:56:13,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048918961] [2022-11-22 01:56:13,335 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-22 01:56:13,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2144079556] [2022-11-22 01:56:13,335 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2144079556] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 01:56:13,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1274007085] [2022-11-22 01:56:13,337 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2022-11-22 01:56:13,338 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 01:56:13,338 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 01:56:13,338 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 01:56:13,338 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 01:56:13,607 INFO L321 Elim1Store]: treesize reduction 209, result has 23.4 percent of original size [2022-11-22 01:56:13,607 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 40 treesize of output 82 [2022-11-22 01:56:13,886 INFO L321 Elim1Store]: treesize reduction 251, result has 19.8 percent of original size [2022-11-22 01:56:13,887 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 9 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 19 case distinctions, treesize of input 60 treesize of output 105 [2022-11-22 01:56:13,948 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 7 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2022-11-22 01:56:14,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:14,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:14,100 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:56:14,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:14,228 INFO L321 Elim1Store]: treesize reduction 315, result has 10.8 percent of original size [2022-11-22 01:56:14,228 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 500 treesize of output 540 [2022-11-22 01:56:14,412 INFO L321 Elim1Store]: treesize reduction 25, result has 16.7 percent of original size [2022-11-22 01:56:14,413 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 541 treesize of output 528 [2022-11-22 01:56:14,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:14,465 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 113 treesize of output 63 [2022-11-22 01:56:14,606 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:14,606 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 63 [2022-11-22 01:56:14,616 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-22 01:56:14,634 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-22 01:56:14,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:14,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:14,708 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:56:14,773 INFO L321 Elim1Store]: treesize reduction 344, result has 8.0 percent of original size [2022-11-22 01:56:14,774 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 167 treesize of output 205 [2022-11-22 01:56:14,836 INFO L321 Elim1Store]: treesize reduction 12, result has 60.0 percent of original size [2022-11-22 01:56:14,836 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 181 treesize of output 180 [2022-11-22 01:56:14,848 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:14,849 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 163 treesize of output 88 [2022-11-22 01:56:14,869 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:14,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:14,872 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:56:14,873 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 163 treesize of output 38 [2022-11-22 01:56:14,892 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:56:14,893 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 90 treesize of output 63 [2022-11-22 01:56:14,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:14,960 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:14,961 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:56:14,966 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-22 01:56:14,966 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 90 treesize of output 93 [2022-11-22 01:56:14,977 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-22 01:56:15,021 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-22 01:56:15,065 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:15,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:15,071 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:56:15,076 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-22 01:56:15,076 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 90 treesize of output 93 [2022-11-22 01:56:15,088 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-22 01:56:15,115 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-22 01:56:15,130 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:15,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:15,138 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:56:15,143 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-22 01:56:15,143 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 90 treesize of output 93 [2022-11-22 01:56:15,264 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 01:56:16,066 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1703#(and (<= 0 |#NULL.base|) (<= 0 |ULTIMATE.start_main_~a~0#1.offset|) (<= ~N~0 2147483647) (<= |ULTIMATE.start_main_~c~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~b~0#1.offset|) (= (ite (= (* |ULTIMATE.start_main_~i~0#1| |ULTIMATE.start_main_~i~0#1| |ULTIMATE.start_main_~i~0#1|) |ULTIMATE.start_main_#t~mem17#1|) 1 0) |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (<= |#NULL.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 |ULTIMATE.start_main_~c~0#1.offset|) (<= 0 |ULTIMATE.start_assume_abort_if_not_#in~cond#1|) (<= 0 |ULTIMATE.start_main_~i~0#1|) (<= 0 |ULTIMATE.start_assume_abort_if_not_~cond#1|) (< |ULTIMATE.start_main_~i~0#1| ~N~0) (<= |#NULL.base| 0) (<= |ULTIMATE.start_main_~b~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (<= 0 |#NULL.offset|) (<= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (= (select (select |#memory_int| |ULTIMATE.start_main_~c~0#1.base|) (+ |ULTIMATE.start_main_~c~0#1.offset| (* (ite (<= (mod |ULTIMATE.start_main_~i~0#1| 4294967296) 2147483647) (mod |ULTIMATE.start_main_~i~0#1| 4294967296) (+ (mod |ULTIMATE.start_main_~i~0#1| 4294967296) (- 4294967296))) 8))) |ULTIMATE.start_main_#t~mem17#1|) (<= 0 |#StackHeapBarrier|) (<= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (<= |ULTIMATE.start_main_~a~0#1.offset| 0))' at error location [2022-11-22 01:56:16,066 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 01:56:16,066 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-22 01:56:16,066 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2022-11-22 01:56:16,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132013774] [2022-11-22 01:56:16,066 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-22 01:56:16,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-22 01:56:16,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:56:16,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-22 01:56:16,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2022-11-22 01:56:16,068 INFO L87 Difference]: Start difference. First operand 40 states and 49 transitions. Second operand has 12 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 12 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:56:16,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:56:16,457 INFO L93 Difference]: Finished difference Result 60 states and 68 transitions. [2022-11-22 01:56:16,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-22 01:56:16,457 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 12 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-11-22 01:56:16,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:56:16,458 INFO L225 Difference]: With dead ends: 60 [2022-11-22 01:56:16,458 INFO L226 Difference]: Without dead ends: 53 [2022-11-22 01:56:16,459 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 30 SyntacticMatches, 10 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 201 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=115, Invalid=391, Unknown=0, NotChecked=0, Total=506 [2022-11-22 01:56:16,459 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 73 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-22 01:56:16,460 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 30 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-22 01:56:16,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2022-11-22 01:56:16,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 38. [2022-11-22 01:56:16,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 37 states have (on average 1.2162162162162162) internal successors, (45), 37 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:56:16,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 45 transitions. [2022-11-22 01:56:16,478 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 45 transitions. Word has length 19 [2022-11-22 01:56:16,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:56:16,478 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 45 transitions. [2022-11-22 01:56:16,479 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 12 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:56:16,479 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 45 transitions. [2022-11-22 01:56:16,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-22 01:56:16,480 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:56:16,480 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:56:16,491 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_515533c4-91f1-4cf4-883c-5205742d8966/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-22 01:56:16,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_515533c4-91f1-4cf4-883c-5205742d8966/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:56:16,687 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:56:16,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:56:16,687 INFO L85 PathProgramCache]: Analyzing trace with hash -1375916955, now seen corresponding path program 6 times [2022-11-22 01:56:16,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:56:16,687 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190637921] [2022-11-22 01:56:16,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:56:16,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:56:16,722 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-22 01:56:16,722 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1790356257] [2022-11-22 01:56:16,722 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-22 01:56:16,723 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:56:16,723 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_515533c4-91f1-4cf4-883c-5205742d8966/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:56:16,724 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_515533c4-91f1-4cf4-883c-5205742d8966/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:56:16,736 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_515533c4-91f1-4cf4-883c-5205742d8966/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-22 01:56:18,838 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-22 01:56:18,838 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-22 01:56:18,843 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 50 conjunts are in the unsatisfiable core [2022-11-22 01:56:18,847 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:56:18,937 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-22 01:56:18,992 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 58 [2022-11-22 01:56:18,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:19,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:19,001 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 116 [2022-11-22 01:56:19,070 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 58 [2022-11-22 01:56:19,076 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:19,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:19,079 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 116 [2022-11-22 01:56:19,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:19,157 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-22 01:56:19,234 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-22 01:56:19,234 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:56:19,443 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-22 01:56:19,734 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 28 [2022-11-22 01:56:20,004 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 78 [2022-11-22 01:56:20,270 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-22 01:56:20,270 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 37 treesize of output 51 [2022-11-22 01:56:20,295 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-22 01:56:20,296 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 8 [2022-11-22 01:56:20,323 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 38 [2022-11-22 01:56:20,327 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 180 treesize of output 178 [2022-11-22 01:56:20,416 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2022-11-22 01:56:20,435 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-22 01:56:20,436 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:56:20,436 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190637921] [2022-11-22 01:56:20,436 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-22 01:56:20,436 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1790356257] [2022-11-22 01:56:20,436 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1790356257] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 01:56:20,436 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1668951819] [2022-11-22 01:56:20,437 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-11-22 01:56:20,438 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 01:56:20,438 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 01:56:20,438 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 01:56:20,438 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 01:56:20,758 INFO L321 Elim1Store]: treesize reduction 251, result has 19.8 percent of original size [2022-11-22 01:56:20,758 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 9 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 19 case distinctions, treesize of input 60 treesize of output 105 [2022-11-22 01:56:20,799 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 18 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 52 [2022-11-22 01:56:20,837 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 7 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2022-11-22 01:56:20,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:20,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:20,946 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:56:20,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:21,055 INFO L321 Elim1Store]: treesize reduction 315, result has 10.8 percent of original size [2022-11-22 01:56:21,055 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 500 treesize of output 540 [2022-11-22 01:56:21,190 INFO L321 Elim1Store]: treesize reduction 25, result has 16.7 percent of original size [2022-11-22 01:56:21,191 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 541 treesize of output 524 [2022-11-22 01:56:21,240 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:21,241 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 113 treesize of output 63 [2022-11-22 01:56:21,346 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-22 01:56:21,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:21,358 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 63 [2022-11-22 01:56:21,401 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-22 01:56:21,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:21,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:21,437 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:56:21,441 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-22 01:56:21,441 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 90 treesize of output 93 [2022-11-22 01:56:21,450 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-22 01:56:21,468 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-22 01:56:21,500 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:21,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:21,516 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:56:21,617 INFO L321 Elim1Store]: treesize reduction 344, result has 8.0 percent of original size [2022-11-22 01:56:21,617 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 167 treesize of output 205 [2022-11-22 01:56:21,693 INFO L321 Elim1Store]: treesize reduction 12, result has 60.0 percent of original size [2022-11-22 01:56:21,693 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 152 treesize of output 155 [2022-11-22 01:56:21,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:21,713 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 138 treesize of output 88 [2022-11-22 01:56:21,728 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:21,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:21,731 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:56:21,732 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 138 treesize of output 63 [2022-11-22 01:56:21,748 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:56:21,749 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 145 treesize of output 93 [2022-11-22 01:56:21,791 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-22 01:56:21,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:21,811 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:21,811 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:56:21,816 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-22 01:56:21,816 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 90 treesize of output 93 [2022-11-22 01:56:21,865 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 01:56:22,743 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2010#(and (<= 0 |#NULL.base|) (= |ULTIMATE.start_main_~i~0#1| 0) (<= 0 |ULTIMATE.start_main_~a~0#1.offset|) (<= ~N~0 2147483647) (<= |ULTIMATE.start_main_~c~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~b~0#1.offset|) (= (ite (= (* |ULTIMATE.start_main_~i~0#1| |ULTIMATE.start_main_~i~0#1| |ULTIMATE.start_main_~i~0#1|) |ULTIMATE.start_main_#t~mem17#1|) 1 0) |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (<= |#NULL.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 |ULTIMATE.start_main_~c~0#1.offset|) (<= 0 |ULTIMATE.start_assume_abort_if_not_#in~cond#1|) (<= 0 |ULTIMATE.start_assume_abort_if_not_~cond#1|) (< |ULTIMATE.start_main_~i~0#1| ~N~0) (<= |#NULL.base| 0) (<= |ULTIMATE.start_main_~b~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (<= 0 |#NULL.offset|) (<= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (= (select (select |#memory_int| |ULTIMATE.start_main_~c~0#1.base|) (+ |ULTIMATE.start_main_~c~0#1.offset| (* (ite (<= (mod |ULTIMATE.start_main_~i~0#1| 4294967296) 2147483647) (mod |ULTIMATE.start_main_~i~0#1| 4294967296) (+ (mod |ULTIMATE.start_main_~i~0#1| 4294967296) (- 4294967296))) 8))) |ULTIMATE.start_main_#t~mem17#1|) (<= 0 |#StackHeapBarrier|) (<= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (<= |ULTIMATE.start_main_~a~0#1.offset| 0))' at error location [2022-11-22 01:56:22,743 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 01:56:22,743 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-22 01:56:22,744 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9] total 19 [2022-11-22 01:56:22,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833672427] [2022-11-22 01:56:22,744 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-22 01:56:22,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-22 01:56:22,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:56:22,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-22 01:56:22,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=452, Unknown=0, NotChecked=0, Total=552 [2022-11-22 01:56:22,746 INFO L87 Difference]: Start difference. First operand 38 states and 45 transitions. Second operand has 19 states, 19 states have (on average 1.6842105263157894) internal successors, (32), 19 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:56:24,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:56:24,213 INFO L93 Difference]: Finished difference Result 97 states and 108 transitions. [2022-11-22 01:56:24,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-11-22 01:56:24,214 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.6842105263157894) internal successors, (32), 19 states have internal predecessors, (32), 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 20 [2022-11-22 01:56:24,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:56:24,217 INFO L225 Difference]: With dead ends: 97 [2022-11-22 01:56:24,217 INFO L226 Difference]: Without dead ends: 95 [2022-11-22 01:56:24,218 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 31 SyntacticMatches, 5 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 464 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=296, Invalid=1264, Unknown=0, NotChecked=0, Total=1560 [2022-11-22 01:56:24,219 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 167 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 243 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-22 01:56:24,219 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [167 Valid, 112 Invalid, 288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 243 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-22 01:56:24,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2022-11-22 01:56:24,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 44. [2022-11-22 01:56:24,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 43 states have (on average 1.2790697674418605) internal successors, (55), 43 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:56:24,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 55 transitions. [2022-11-22 01:56:24,239 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 55 transitions. Word has length 20 [2022-11-22 01:56:24,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:56:24,240 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 55 transitions. [2022-11-22 01:56:24,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.6842105263157894) internal successors, (32), 19 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:56:24,240 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 55 transitions. [2022-11-22 01:56:24,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-22 01:56:24,241 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:56:24,241 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:56:24,255 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_515533c4-91f1-4cf4-883c-5205742d8966/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-22 01:56:24,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_515533c4-91f1-4cf4-883c-5205742d8966/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-22 01:56:24,451 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:56:24,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:56:24,452 INFO L85 PathProgramCache]: Analyzing trace with hash -1569018936, now seen corresponding path program 3 times [2022-11-22 01:56:24,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:56:24,453 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233664129] [2022-11-22 01:56:24,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:56:24,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:56:24,483 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-22 01:56:24,483 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [915007215] [2022-11-22 01:56:24,483 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-22 01:56:24,484 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:56:24,484 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_515533c4-91f1-4cf4-883c-5205742d8966/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:56:24,485 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_515533c4-91f1-4cf4-883c-5205742d8966/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:56:24,492 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_515533c4-91f1-4cf4-883c-5205742d8966/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-22 01:56:25,239 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-22 01:56:25,239 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-22 01:56:25,242 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 74 conjunts are in the unsatisfiable core [2022-11-22 01:56:25,247 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:56:25,261 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-22 01:56:25,261 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 90 treesize of output 84 [2022-11-22 01:56:25,305 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-22 01:56:25,358 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:25,358 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-22 01:56:25,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:25,415 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-22 01:56:25,512 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2022-11-22 01:56:25,639 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-22 01:56:25,639 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 147 treesize of output 135 [2022-11-22 01:56:25,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:25,649 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:56:25,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:25,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:25,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:25,658 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 128 treesize of output 210 [2022-11-22 01:56:25,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:25,733 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 130 treesize of output 61 [2022-11-22 01:56:25,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:25,829 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:25,832 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-22 01:56:25,832 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 43 treesize of output 44 [2022-11-22 01:56:25,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:25,981 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-22 01:56:25,982 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 41 treesize of output 42 [2022-11-22 01:56:26,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:26,069 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:56:26,086 INFO L321 Elim1Store]: treesize reduction 43, result has 14.0 percent of original size [2022-11-22 01:56:26,086 INFO L350 Elim1Store]: Elim1 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 7 case distinctions, treesize of input 58 treesize of output 54 [2022-11-22 01:56:26,171 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:26,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:26,176 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:26,177 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:56:26,183 INFO L321 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2022-11-22 01:56:26,184 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 57 treesize of output 64 [2022-11-22 01:56:26,498 INFO L321 Elim1Store]: treesize reduction 20, result has 39.4 percent of original size [2022-11-22 01:56:26,498 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 66 treesize of output 46 [2022-11-22 01:56:26,531 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:56:26,531 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:56:26,909 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-22 01:56:27,391 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 28 [2022-11-22 01:56:28,309 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse7 (+ 2 |c_ULTIMATE.start_main_~i~0#1|)) (.cse8 (* (mod |c_ULTIMATE.start_main_~i~0#1| 4294967296) 8))) (let ((.cse1 (+ (* (mod (+ |c_ULTIMATE.start_main_~i~0#1| 1) 4294967296) 8) |c_ULTIMATE.start_main_~c~0#1.offset|)) (.cse2 (+ .cse8 |c_ULTIMATE.start_main_~c~0#1.offset|)) (.cse3 (+ .cse8 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse4 (+ (* 8 (mod .cse7 4294967296)) |c_ULTIMATE.start_main_~c~0#1.offset|)) (.cse5 (+ 8 |c_ULTIMATE.start_main_~c~0#1.offset|)) (.cse6 (= |c_ULTIMATE.start_main_~i~0#1| 0))) (and (or (forall ((v_ArrVal_806 Int)) (= (select (store (let ((.cse0 (store (select |c_#memory_int| |c_ULTIMATE.start_main_~c~0#1.base|) |c_ULTIMATE.start_main_~c~0#1.offset| 0))) (store .cse0 .cse1 (+ (select .cse0 .cse2) (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~c~0#1.base| .cse0) |c_ULTIMATE.start_main_~b~0#1.base|) .cse3)))) .cse4 v_ArrVal_806) .cse5) 1)) (not .cse6)) (or (and (forall ((v_ArrVal_799 (Array Int Int)) (v_ArrVal_806 Int)) (= (select (store (store v_ArrVal_799 .cse1 (+ (select v_ArrVal_799 .cse2) (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~c~0#1.base| v_ArrVal_799) |c_ULTIMATE.start_main_~b~0#1.base|) .cse3))) .cse4 v_ArrVal_806) .cse5) 1)) (not (= .cse7 0))) .cse6)))) is different from false [2022-11-22 01:56:29,338 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-22 01:56:29,338 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 36 [2022-11-22 01:56:41,106 WARN L233 SmtUtils]: Spent 5.34s on a formula simplification. DAG size of input: 97 DAG size of output: 52 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 01:56:41,197 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse1 (mod |c_ULTIMATE.start_main_~i~0#1| 4294967296))) (let ((.cse10 (* .cse1 8)) (.cse0 (mod (+ |c_ULTIMATE.start_main_~i~0#1| 1) 4294967296))) (let ((.cse3 (+ (* .cse0 8) (- 34359738368) |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse4 (+ (* 8 (mod (+ 2 |c_ULTIMATE.start_main_~i~0#1|) 4294967296)) |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse6 (+ .cse10 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse5 (+ .cse10 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse7 (= |c_ULTIMATE.start_main_~i~0#1| 0))) (and (or (and (or (not (<= .cse0 2147483647)) (<= .cse1 2147483647)) (forall ((v_ArrVal_796 Int) (v_ArrVal_795 Int) (v_ArrVal_790 (Array Int Int))) (or (= (select (select (let ((.cse2 (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| (store (store v_ArrVal_790 .cse3 v_ArrVal_795) .cse4 v_ArrVal_796)))) (store .cse2 |c_ULTIMATE.start_main_~c~0#1.base| (store (select .cse2 |c_ULTIMATE.start_main_~c~0#1.base|) |c_ULTIMATE.start_main_~c~0#1.offset| 0))) |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset|) 1) (not (<= (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| v_ArrVal_790) |c_ULTIMATE.start_main_~a~0#1.base|) .cse5) (select v_ArrVal_790 .cse6)) v_ArrVal_795))))) .cse7) (or (forall ((v_ArrVal_796 Int) (v_ArrVal_795 Int)) (let ((.cse9 (store (select |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset| 1))) (or (= (select (select (let ((.cse8 (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| (store (store .cse9 .cse3 v_ArrVal_795) .cse4 v_ArrVal_796)))) (store .cse8 |c_ULTIMATE.start_main_~c~0#1.base| (store (select .cse8 |c_ULTIMATE.start_main_~c~0#1.base|) |c_ULTIMATE.start_main_~c~0#1.offset| 0))) |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset|) 1) (not (<= (+ (select .cse9 .cse6) (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse9) |c_ULTIMATE.start_main_~a~0#1.base|) .cse5)) v_ArrVal_795))))) (not .cse7)))))) is different from false [2022-11-22 01:56:45,425 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-22 01:56:45,425 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 33 treesize of output 47 [2022-11-22 01:56:45,444 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-22 01:56:45,444 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 8 [2022-11-22 01:56:45,517 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 129 treesize of output 117 [2022-11-22 01:56:45,555 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 59 [2022-11-22 01:56:45,626 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 3 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 6 not checked. [2022-11-22 01:56:45,626 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:56:45,627 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233664129] [2022-11-22 01:56:45,627 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-22 01:56:45,627 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [915007215] [2022-11-22 01:56:45,627 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [915007215] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 01:56:45,627 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [359517544] [2022-11-22 01:56:45,629 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2022-11-22 01:56:45,629 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 01:56:45,629 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 01:56:45,630 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 01:56:45,630 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 01:56:45,858 INFO L321 Elim1Store]: treesize reduction 251, result has 19.8 percent of original size [2022-11-22 01:56:45,859 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 9 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 19 case distinctions, treesize of input 60 treesize of output 105 [2022-11-22 01:56:45,884 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 18 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 52 [2022-11-22 01:56:45,914 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 7 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2022-11-22 01:56:46,006 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:56:46,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:46,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:46,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:46,142 INFO L321 Elim1Store]: treesize reduction 315, result has 10.8 percent of original size [2022-11-22 01:56:46,142 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 500 treesize of output 540 [2022-11-22 01:56:46,418 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 93 treesize of output 82 [2022-11-22 01:56:46,434 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:56:46,435 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 36 [2022-11-22 01:56:46,492 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-22 01:56:46,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:46,505 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 63 [2022-11-22 01:56:46,521 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-22 01:56:46,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:46,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:46,570 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:56:46,647 INFO L321 Elim1Store]: treesize reduction 344, result has 8.0 percent of original size [2022-11-22 01:56:46,647 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 164 treesize of output 202 [2022-11-22 01:56:46,700 INFO L321 Elim1Store]: treesize reduction 12, result has 60.0 percent of original size [2022-11-22 01:56:46,701 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 152 treesize of output 153 [2022-11-22 01:56:46,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:46,711 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 136 treesize of output 61 [2022-11-22 01:56:46,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:46,722 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:56:46,723 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 136 treesize of output 36 [2022-11-22 01:56:46,762 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-22 01:56:46,763 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 61 treesize of output 63 [2022-11-22 01:56:46,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:46,806 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:46,806 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:56:46,810 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-22 01:56:46,810 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 90 treesize of output 93 [2022-11-22 01:56:46,819 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-22 01:56:46,837 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-22 01:56:46,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:46,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:46,880 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:56:46,950 INFO L321 Elim1Store]: treesize reduction 344, result has 8.0 percent of original size [2022-11-22 01:56:46,950 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 164 treesize of output 202 [2022-11-22 01:56:46,996 INFO L321 Elim1Store]: treesize reduction 12, result has 60.0 percent of original size [2022-11-22 01:56:46,997 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 152 treesize of output 155 [2022-11-22 01:56:47,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:47,010 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 138 treesize of output 88 [2022-11-22 01:56:47,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:47,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:47,024 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:56:47,024 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 138 treesize of output 63 [2022-11-22 01:56:47,042 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:56:47,043 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 145 treesize of output 93 [2022-11-22 01:56:47,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:47,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:56:47,087 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:56:47,092 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-22 01:56:47,093 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 90 treesize of output 93 [2022-11-22 01:56:47,103 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-22 01:56:47,203 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 01:56:48,272 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2406#(and (<= 0 |#NULL.base|) (<= 0 |ULTIMATE.start_main_~a~0#1.offset|) (<= ~N~0 2147483647) (<= |ULTIMATE.start_main_~c~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~b~0#1.offset|) (= (ite (= (* |ULTIMATE.start_main_~i~0#1| |ULTIMATE.start_main_~i~0#1| |ULTIMATE.start_main_~i~0#1|) |ULTIMATE.start_main_#t~mem17#1|) 1 0) |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (<= |#NULL.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 |ULTIMATE.start_main_~c~0#1.offset|) (<= 0 |ULTIMATE.start_assume_abort_if_not_#in~cond#1|) (<= 0 |ULTIMATE.start_main_~i~0#1|) (<= 0 |ULTIMATE.start_assume_abort_if_not_~cond#1|) (< |ULTIMATE.start_main_~i~0#1| ~N~0) (<= |#NULL.base| 0) (<= |ULTIMATE.start_main_~b~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (<= 0 |#NULL.offset|) (<= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (= (select (select |#memory_int| |ULTIMATE.start_main_~c~0#1.base|) (+ |ULTIMATE.start_main_~c~0#1.offset| (* (ite (<= (mod |ULTIMATE.start_main_~i~0#1| 4294967296) 2147483647) (mod |ULTIMATE.start_main_~i~0#1| 4294967296) (+ (mod |ULTIMATE.start_main_~i~0#1| 4294967296) (- 4294967296))) 8))) |ULTIMATE.start_main_#t~mem17#1|) (<= 0 |#StackHeapBarrier|) (<= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (<= |ULTIMATE.start_main_~a~0#1.offset| 0))' at error location [2022-11-22 01:56:48,272 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 01:56:48,272 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-22 01:56:48,272 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 15] total 30 [2022-11-22 01:56:48,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282549037] [2022-11-22 01:56:48,272 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-22 01:56:48,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-11-22 01:56:48,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:56:48,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-11-22 01:56:48,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=921, Unknown=4, NotChecked=126, Total=1190 [2022-11-22 01:56:48,274 INFO L87 Difference]: Start difference. First operand 44 states and 55 transitions. Second operand has 30 states, 30 states have (on average 1.2333333333333334) internal successors, (37), 30 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:56:48,732 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse1 (mod |c_ULTIMATE.start_main_~i~0#1| 4294967296))) (let ((.cse9 (store (select |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset| 1)) (.cse12 (* .cse1 8)) (.cse0 (mod (+ |c_ULTIMATE.start_main_~i~0#1| 1) 4294967296))) (let ((.cse3 (+ (* .cse0 8) (- 34359738368) |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse4 (+ (* 8 (mod (+ 2 |c_ULTIMATE.start_main_~i~0#1|) 4294967296)) |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse6 (+ .cse12 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse5 (+ .cse12 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse7 (= |c_ULTIMATE.start_main_~i~0#1| 0)) (.cse10 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse9) |c_ULTIMATE.start_main_~a~0#1.base|))) (and (or (and (or (not (<= .cse0 2147483647)) (<= .cse1 2147483647)) (forall ((v_ArrVal_796 Int) (v_ArrVal_795 Int) (v_ArrVal_790 (Array Int Int))) (or (= (select (select (let ((.cse2 (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| (store (store v_ArrVal_790 .cse3 v_ArrVal_795) .cse4 v_ArrVal_796)))) (store .cse2 |c_ULTIMATE.start_main_~c~0#1.base| (store (select .cse2 |c_ULTIMATE.start_main_~c~0#1.base|) |c_ULTIMATE.start_main_~c~0#1.offset| 0))) |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset|) 1) (not (<= (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| v_ArrVal_790) |c_ULTIMATE.start_main_~a~0#1.base|) .cse5) (select v_ArrVal_790 .cse6)) v_ArrVal_795))))) .cse7) (or (not (= |c_ULTIMATE.start_main_~c~0#1.offset| |c_ULTIMATE.start_main_~b~0#1.offset|)) (not (= |c_ULTIMATE.start_main_~b~0#1.base| |c_ULTIMATE.start_main_~c~0#1.base|))) (or (forall ((v_ArrVal_796 Int) (v_ArrVal_795 Int)) (or (= (select (select (let ((.cse8 (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| (store (store .cse9 .cse3 v_ArrVal_795) .cse4 v_ArrVal_796)))) (store .cse8 |c_ULTIMATE.start_main_~c~0#1.base| (store (select .cse8 |c_ULTIMATE.start_main_~c~0#1.base|) |c_ULTIMATE.start_main_~c~0#1.offset| 0))) |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset|) 1) (not (<= (+ (select .cse9 .cse6) (select .cse10 .cse5)) v_ArrVal_795)))) (not .cse7)) (forall ((v_ArrVal_796 Int) (v_ArrVal_795 Int)) (or (not (<= (+ (select .cse10 |c_ULTIMATE.start_main_~a~0#1.offset|) 1) v_ArrVal_795)) (= (select (select (let ((.cse11 (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| (store (store .cse9 (+ (- 34359738360) |c_ULTIMATE.start_main_~b~0#1.offset|) v_ArrVal_795) (+ 16 |c_ULTIMATE.start_main_~b~0#1.offset|) v_ArrVal_796)))) (store .cse11 |c_ULTIMATE.start_main_~c~0#1.base| (store (select .cse11 |c_ULTIMATE.start_main_~c~0#1.base|) |c_ULTIMATE.start_main_~c~0#1.offset| 0))) |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset|) 1))))))) is different from false [2022-11-22 01:56:50,986 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.38s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-22 01:56:57,445 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse0 (store (select |c_#memory_int| |c_ULTIMATE.start_main_~c~0#1.base|) |c_ULTIMATE.start_main_~c~0#1.offset| 0)) (.cse8 (+ 2 |c_ULTIMATE.start_main_~i~0#1|)) (.cse9 (* (mod |c_ULTIMATE.start_main_~i~0#1| 4294967296) 8))) (let ((.cse1 (+ (* (mod (+ |c_ULTIMATE.start_main_~i~0#1| 1) 4294967296) 8) |c_ULTIMATE.start_main_~c~0#1.offset|)) (.cse2 (+ .cse9 |c_ULTIMATE.start_main_~c~0#1.offset|)) (.cse4 (+ .cse9 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse5 (+ (* 8 (mod .cse8 4294967296)) |c_ULTIMATE.start_main_~c~0#1.offset|)) (.cse6 (+ 8 |c_ULTIMATE.start_main_~c~0#1.offset|)) (.cse7 (= |c_ULTIMATE.start_main_~i~0#1| 0)) (.cse3 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~c~0#1.base| .cse0) |c_ULTIMATE.start_main_~b~0#1.base|))) (and (or (forall ((v_ArrVal_806 Int)) (= (select (store (store .cse0 .cse1 (+ (select .cse0 .cse2) (select .cse3 .cse4))) .cse5 v_ArrVal_806) .cse6) 1)) (not .cse7)) (or (and (forall ((v_ArrVal_799 (Array Int Int)) (v_ArrVal_806 Int)) (= (select (store (store v_ArrVal_799 .cse1 (+ (select v_ArrVal_799 .cse2) (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~c~0#1.base| v_ArrVal_799) |c_ULTIMATE.start_main_~b~0#1.base|) .cse4))) .cse5 v_ArrVal_806) .cse6) 1)) (not (= .cse8 0))) .cse7) (= (select .cse3 |c_ULTIMATE.start_main_~b~0#1.offset|) 1)))) is different from false [2022-11-22 01:56:58,508 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse15 (mod |c_ULTIMATE.start_main_~i~0#1| 4294967296)) (.cse16 (mod (+ 4294967295 |c_ULTIMATE.start_main_~i~0#1|) 4294967296))) (let ((.cse6 (+ |c_ULTIMATE.start_main_~i~0#1| 1)) (.cse2 (select |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base|)) (.cse8 (* 8 .cse16)) (.cse3 (* .cse15 8)) (.cse4 (select |c_#memory_int| |c_ULTIMATE.start_main_~c~0#1.base|))) (let ((.cse0 (select .cse4 |c_ULTIMATE.start_main_~c~0#1.offset|)) (.cse7 (+ .cse3 |c_ULTIMATE.start_main_~c~0#1.offset|)) (.cse5 (+ 8 |c_ULTIMATE.start_main_~c~0#1.offset|)) (.cse9 (select .cse2 (+ .cse8 |c_ULTIMATE.start_main_~b~0#1.offset|))) (.cse11 (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|)) (.cse10 (* (mod .cse6 4294967296) 8))) (and (= .cse0 0) (forall ((v_ArrVal_796 Int)) (= (select (select (let ((.cse1 (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| (store .cse2 (+ .cse3 |c_ULTIMATE.start_main_~b~0#1.offset|) v_ArrVal_796)))) (store .cse1 |c_ULTIMATE.start_main_~c~0#1.base| (store (select .cse1 |c_ULTIMATE.start_main_~c~0#1.base|) |c_ULTIMATE.start_main_~c~0#1.offset| 0))) |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset|) 1)) (= (+ .cse0 1) (select .cse4 .cse5)) (not (= .cse6 0)) (forall ((v_ArrVal_806 Int)) (= (select (store .cse4 .cse7 v_ArrVal_806) .cse5) 1)) (exists ((|ULTIMATE.start_main_~a~0#1.base| Int)) (= 6 (select (select |c_#memory_int| |ULTIMATE.start_main_~a~0#1.base|) 0))) (not (= |c_ULTIMATE.start_main_~i~0#1| 0)) (= 0 |c_ULTIMATE.start_main_~b~0#1.offset|) (forall ((v_ArrVal_806 Int)) (= (select (store (store .cse4 .cse7 (+ (select .cse4 (+ |c_ULTIMATE.start_main_~c~0#1.offset| .cse8)) .cse9)) (+ .cse10 |c_ULTIMATE.start_main_~c~0#1.offset|) v_ArrVal_806) .cse5) 1)) (= (select .cse2 |c_ULTIMATE.start_main_~b~0#1.offset|) 1) (= 6 (select .cse11 |c_ULTIMATE.start_main_~a~0#1.offset|)) (exists ((|ULTIMATE.start_main_~a~0#1.base| Int)) (let ((.cse12 (select (select |c_#memory_int| |ULTIMATE.start_main_~a~0#1.base|) 0))) (and (not (= |ULTIMATE.start_main_~a~0#1.base| |c_ULTIMATE.start_main_~c~0#1.base|)) (<= (+ .cse12 1) (select .cse2 (+ 8 |c_ULTIMATE.start_main_~b~0#1.offset|))) (= 6 .cse12)))) (not (= |c_ULTIMATE.start_main_~a~0#1.base| |c_ULTIMATE.start_main_~c~0#1.base|)) (= |c_ULTIMATE.start_main_~c~0#1.offset| 0) (not (= |c_ULTIMATE.start_main_~b~0#1.base| |c_ULTIMATE.start_main_~a~0#1.base|)) (= |c_ULTIMATE.start_main_~a~0#1.offset| 0) (forall ((v_ArrVal_796 Int) (v_ArrVal_795 Int)) (or (not (<= (+ .cse9 (select .cse11 (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse8))) v_ArrVal_795)) (= (select (select (let ((.cse13 (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| (store (store .cse2 (+ .cse3 (- 34359738368) |c_ULTIMATE.start_main_~b~0#1.offset|) v_ArrVal_795) (+ .cse10 |c_ULTIMATE.start_main_~b~0#1.offset|) v_ArrVal_796)))) (store .cse13 |c_ULTIMATE.start_main_~c~0#1.base| (store (select .cse13 |c_ULTIMATE.start_main_~c~0#1.base|) |c_ULTIMATE.start_main_~c~0#1.offset| 0))) |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset|) 1))) (exists ((|ULTIMATE.start_main_~b~0#1.base| Int)) (let ((.cse14 (select |c_#memory_int| |ULTIMATE.start_main_~b~0#1.base|))) (and (= (select .cse14 0) 1) (<= 7 (select .cse14 8))))) (not (= |c_ULTIMATE.start_main_~b~0#1.base| |c_ULTIMATE.start_main_~c~0#1.base|)) (or (not (<= .cse15 2147483647)) (<= .cse16 2147483647)))))) is different from false [2022-11-22 01:57:00,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:57:00,152 INFO L93 Difference]: Finished difference Result 71 states and 81 transitions. [2022-11-22 01:57:00,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-22 01:57:00,152 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 1.2333333333333334) internal successors, (37), 30 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-11-22 01:57:00,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:57:00,153 INFO L225 Difference]: With dead ends: 71 [2022-11-22 01:57:00,153 INFO L226 Difference]: Without dead ends: 69 [2022-11-22 01:57:00,155 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 21 SyntacticMatches, 6 SemanticMatches, 50 ConstructedPredicates, 5 IntricatePredicates, 1 DeprecatedPredicates, 632 ImplicationChecksByTransitivity, 25.2s TimeCoverageRelationStatistics Valid=277, Invalid=1898, Unknown=7, NotChecked=470, Total=2652 [2022-11-22 01:57:00,155 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 54 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 430 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 538 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 430 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 70 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2022-11-22 01:57:00,155 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 85 Invalid, 538 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 430 Invalid, 0 Unknown, 70 Unchecked, 5.3s Time] [2022-11-22 01:57:00,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2022-11-22 01:57:00,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 49. [2022-11-22 01:57:00,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 48 states have (on average 1.25) internal successors, (60), 48 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:57:00,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 60 transitions. [2022-11-22 01:57:00,178 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 60 transitions. Word has length 20 [2022-11-22 01:57:00,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:57:00,178 INFO L495 AbstractCegarLoop]: Abstraction has 49 states and 60 transitions. [2022-11-22 01:57:00,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 1.2333333333333334) internal successors, (37), 30 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:57:00,178 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 60 transitions. [2022-11-22 01:57:00,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-22 01:57:00,179 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:57:00,179 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:57:00,187 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_515533c4-91f1-4cf4-883c-5205742d8966/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-22 01:57:00,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_515533c4-91f1-4cf4-883c-5205742d8966/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-22 01:57:00,387 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:57:00,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:57:00,387 INFO L85 PathProgramCache]: Analyzing trace with hash 429256297, now seen corresponding path program 4 times [2022-11-22 01:57:00,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:57:00,387 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259600900] [2022-11-22 01:57:00,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:57:00,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:57:00,418 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-22 01:57:00,418 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [915139757] [2022-11-22 01:57:00,418 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-22 01:57:00,418 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:57:00,418 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_515533c4-91f1-4cf4-883c-5205742d8966/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:57:00,419 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_515533c4-91f1-4cf4-883c-5205742d8966/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:57:00,451 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_515533c4-91f1-4cf4-883c-5205742d8966/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-22 01:57:00,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:57:00,562 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-22 01:57:00,564 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:57:00,684 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-22 01:57:00,684 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:57:00,781 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-22 01:57:00,781 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:57:00,781 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259600900] [2022-11-22 01:57:00,782 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-22 01:57:00,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [915139757] [2022-11-22 01:57:00,782 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [915139757] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 01:57:00,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [477373062] [2022-11-22 01:57:00,784 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2022-11-22 01:57:00,784 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 01:57:00,784 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 01:57:00,785 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 01:57:00,785 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 01:57:01,020 INFO L321 Elim1Store]: treesize reduction 251, result has 19.8 percent of original size [2022-11-22 01:57:01,020 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 9 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 19 case distinctions, treesize of input 60 treesize of output 105 [2022-11-22 01:57:01,051 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 18 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 52 [2022-11-22 01:57:01,085 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 7 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2022-11-22 01:57:01,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:57:01,202 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:57:01,203 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:57:01,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:57:01,319 INFO L321 Elim1Store]: treesize reduction 315, result has 10.8 percent of original size [2022-11-22 01:57:01,319 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 500 treesize of output 540 [2022-11-22 01:57:01,547 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 145 treesize of output 132 [2022-11-22 01:57:01,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:57:01,567 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 113 treesize of output 38 [2022-11-22 01:57:01,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:57:01,648 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 63 [2022-11-22 01:57:01,658 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-22 01:57:01,699 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-22 01:57:01,726 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:57:01,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:57:01,733 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:57:01,737 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-22 01:57:01,738 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 90 treesize of output 93 [2022-11-22 01:57:01,748 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-22 01:57:01,767 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-22 01:57:01,807 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:57:01,813 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:57:01,818 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:57:01,881 INFO L321 Elim1Store]: treesize reduction 344, result has 8.0 percent of original size [2022-11-22 01:57:01,882 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 164 treesize of output 202 [2022-11-22 01:57:01,902 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 73 treesize of output 61 [2022-11-22 01:57:01,911 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:57:01,912 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 34 [2022-11-22 01:57:01,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:57:01,963 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:57:01,964 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:57:01,967 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-22 01:57:01,968 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 90 treesize of output 93 [2022-11-22 01:57:01,976 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-22 01:57:02,079 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 01:57:03,029 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2785#(and (<= 0 |#NULL.base|) (<= 0 |ULTIMATE.start_main_~a~0#1.offset|) (<= ~N~0 2147483647) (<= |ULTIMATE.start_main_~c~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~b~0#1.offset|) (= (ite (= (* |ULTIMATE.start_main_~i~0#1| |ULTIMATE.start_main_~i~0#1| |ULTIMATE.start_main_~i~0#1|) |ULTIMATE.start_main_#t~mem17#1|) 1 0) |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (<= |#NULL.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 |ULTIMATE.start_main_~c~0#1.offset|) (<= 0 |ULTIMATE.start_assume_abort_if_not_#in~cond#1|) (<= 0 |ULTIMATE.start_main_~i~0#1|) (<= 0 |ULTIMATE.start_assume_abort_if_not_~cond#1|) (< |ULTIMATE.start_main_~i~0#1| ~N~0) (<= |#NULL.base| 0) (<= |ULTIMATE.start_main_~b~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (<= 0 |#NULL.offset|) (<= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (= (select (select |#memory_int| |ULTIMATE.start_main_~c~0#1.base|) (+ |ULTIMATE.start_main_~c~0#1.offset| (* (ite (<= (mod |ULTIMATE.start_main_~i~0#1| 4294967296) 2147483647) (mod |ULTIMATE.start_main_~i~0#1| 4294967296) (+ (mod |ULTIMATE.start_main_~i~0#1| 4294967296) (- 4294967296))) 8))) |ULTIMATE.start_main_#t~mem17#1|) (<= 0 |#StackHeapBarrier|) (<= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (<= |ULTIMATE.start_main_~a~0#1.offset| 0))' at error location [2022-11-22 01:57:03,029 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 01:57:03,029 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-22 01:57:03,029 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 15 [2022-11-22 01:57:03,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257695662] [2022-11-22 01:57:03,030 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-22 01:57:03,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-22 01:57:03,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:57:03,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-22 01:57:03,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=299, Unknown=0, NotChecked=0, Total=380 [2022-11-22 01:57:03,031 INFO L87 Difference]: Start difference. First operand 49 states and 60 transitions. Second operand has 15 states, 15 states have (on average 1.5333333333333334) internal successors, (23), 15 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:57:03,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:57:03,712 INFO L93 Difference]: Finished difference Result 85 states and 94 transitions. [2022-11-22 01:57:03,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-22 01:57:03,712 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.5333333333333334) internal successors, (23), 15 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2022-11-22 01:57:03,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:57:03,713 INFO L225 Difference]: With dead ends: 85 [2022-11-22 01:57:03,713 INFO L226 Difference]: Without dead ends: 66 [2022-11-22 01:57:03,714 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 32 SyntacticMatches, 14 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 376 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=174, Invalid=638, Unknown=0, NotChecked=0, Total=812 [2022-11-22 01:57:03,714 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 91 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-22 01:57:03,714 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 68 Invalid, 231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-22 01:57:03,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2022-11-22 01:57:03,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 44. [2022-11-22 01:57:03,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 43 states have (on average 1.2093023255813953) internal successors, (52), 43 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:57:03,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 52 transitions. [2022-11-22 01:57:03,734 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 52 transitions. Word has length 22 [2022-11-22 01:57:03,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:57:03,735 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 52 transitions. [2022-11-22 01:57:03,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 1.5333333333333334) internal successors, (23), 15 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:57:03,735 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 52 transitions. [2022-11-22 01:57:03,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-22 01:57:03,736 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:57:03,736 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:57:03,744 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_515533c4-91f1-4cf4-883c-5205742d8966/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-22 01:57:03,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_515533c4-91f1-4cf4-883c-5205742d8966/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-22 01:57:03,943 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:57:03,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:57:03,943 INFO L85 PathProgramCache]: Analyzing trace with hash 1231009634, now seen corresponding path program 5 times [2022-11-22 01:57:03,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:57:03,943 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834420193] [2022-11-22 01:57:03,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:57:03,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:57:03,983 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-22 01:57:03,983 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2139321785] [2022-11-22 01:57:03,983 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-22 01:57:03,983 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:57:03,983 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_515533c4-91f1-4cf4-883c-5205742d8966/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:57:03,984 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_515533c4-91f1-4cf4-883c-5205742d8966/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:57:04,015 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_515533c4-91f1-4cf4-883c-5205742d8966/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-22 01:57:06,454 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-22 01:57:06,454 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-22 01:57:06,459 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 81 conjunts are in the unsatisfiable core [2022-11-22 01:57:06,464 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:57:06,505 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 42 [2022-11-22 01:57:06,722 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-22 01:57:06,777 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:57:06,778 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-22 01:57:06,822 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:57:06,823 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-22 01:57:06,890 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 79 treesize of output 85 [2022-11-22 01:57:06,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:57:06,908 INFO L321 Elim1Store]: treesize reduction 27, result has 3.6 percent of original size [2022-11-22 01:57:06,908 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 49 treesize of output 95 [2022-11-22 01:57:06,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:57:07,008 INFO L321 Elim1Store]: treesize reduction 27, result has 35.7 percent of original size [2022-11-22 01:57:07,009 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 73 treesize of output 32 [2022-11-22 01:57:07,034 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2022-11-22 01:57:07,073 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-22 01:57:07,261 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2022-11-22 01:57:07,363 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-22 01:57:07,363 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 147 treesize of output 135 [2022-11-22 01:57:07,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:57:07,373 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:57:07,374 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:57:07,375 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:57:07,377 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:57:07,378 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 128 treesize of output 210 [2022-11-22 01:57:07,435 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-22 01:57:07,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:57:07,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:57:07,550 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-22 01:57:07,551 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 47 treesize of output 44 [2022-11-22 01:57:07,715 INFO L321 Elim1Store]: treesize reduction 37, result has 21.3 percent of original size [2022-11-22 01:57:07,716 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 101 treesize of output 110 [2022-11-22 01:57:07,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:57:07,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:57:07,748 INFO L321 Elim1Store]: treesize reduction 58, result has 1.7 percent of original size [2022-11-22 01:57:07,749 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 60 treesize of output 107 [2022-11-22 01:57:07,803 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 60 treesize of output 12 [2022-11-22 01:57:07,880 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2022-11-22 01:57:08,943 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 124 treesize of output 106 [2022-11-22 01:57:08,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:57:08,959 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:57:08,962 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 25 [2022-11-22 01:57:08,994 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:57:08,994 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:57:19,830 WARN L233 SmtUtils]: Spent 6.03s on a formula simplification that was a NOOP. DAG size: 42 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 01:57:19,972 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 24 [2022-11-22 01:57:20,088 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-22 01:57:59,189 WARN L233 SmtUtils]: Spent 36.39s on a formula simplification. DAG size of input: 80 DAG size of output: 53 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 01:57:59,665 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 74 treesize of output 70 [2022-11-22 01:57:59,692 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 28 [2022-11-22 02:00:03,447 WARN L233 SmtUtils]: Spent 1.96m on a formula simplification. DAG size of input: 135 DAG size of output: 73 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:00:33,151 WARN L233 SmtUtils]: Spent 25.03s on a formula simplification that was a NOOP. DAG size: 99 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:00:43,865 WARN L233 SmtUtils]: Spent 5.97s on a formula simplification that was a NOOP. DAG size: 57 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:00:51,581 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-22 02:00:51,582 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 79 treesize of output 65 [2022-11-22 02:00:51,878 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-22 02:00:51,878 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 83 treesize of output 67 [2022-11-22 02:00:52,193 WARN L837 $PredicateComparison]: unable to prove that (or (let ((.cse28 (mod |c_ULTIMATE.start_main_~i~0#1| 4294967296))) (let ((.cse27 (* .cse28 8)) (.cse12 (= |c_ULTIMATE.start_main_~i~0#1| 0)) (.cse23 (<= .cse28 2147483647))) (let ((.cse0 (not .cse23)) (.cse1 (not .cse12)) (.cse11 (+ .cse27 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse10 (select |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base|)) (.cse21 (+ .cse27 (- 34359738368) |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse5 (+ 16 |c_ULTIMATE.start_main_~c~0#1.offset|)) (.cse3 (+ 8 |c_ULTIMATE.start_main_~c~0#1.offset|))) (and (or .cse0 (and (or .cse1 (forall ((v_arrayElimArr_78 (Array Int Int)) (v_ArrVal_1052 Int) (|aux_div_ULTIMATE.start_main_~i~0#1_45| Int) (v_ArrVal_1048 Int) (|aux_mod_ULTIMATE.start_main_~i~0#1_45| Int)) (let ((.cse6 (* |aux_div_ULTIMATE.start_main_~i~0#1_45| 4294967296))) (or (= (select (store (store (let ((.cse4 (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| v_arrayElimArr_78))) (let ((.cse2 (store (select .cse4 |c_ULTIMATE.start_main_~c~0#1.base|) |c_ULTIMATE.start_main_~c~0#1.offset| 0))) (store .cse2 .cse3 (select (select (store .cse4 |c_ULTIMATE.start_main_~c~0#1.base| .cse2) |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset|)))) .cse5 v_ArrVal_1048) (+ (* (mod |aux_mod_ULTIMATE.start_main_~i~0#1_45| 4294967296) 8) |c_ULTIMATE.start_main_~c~0#1.offset| (- 34359738368)) v_ArrVal_1052) .cse3) 1) (<= 4294967296 |aux_mod_ULTIMATE.start_main_~i~0#1_45|) (<= c_~N~0 (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse6)) (<= |aux_mod_ULTIMATE.start_main_~i~0#1_45| 2147483647) (< (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse6 1) c_~N~0))))) (or (forall ((v_ArrVal_1041 Int) (v_ArrVal_1052 Int) (|v_ULTIMATE.start_main_~i~0#1_373| Int) (|aux_div_ULTIMATE.start_main_~i~0#1_45| Int) (v_ArrVal_1048 Int) (v_ArrVal_1038 Int) (|aux_mod_ULTIMATE.start_main_~i~0#1_45| Int)) (let ((.cse7 (* |aux_div_ULTIMATE.start_main_~i~0#1_45| 4294967296))) (or (not (< |v_ULTIMATE.start_main_~i~0#1_373| c_~N~0)) (<= 4294967296 |aux_mod_ULTIMATE.start_main_~i~0#1_45|) (< (+ |v_ULTIMATE.start_main_~i~0#1_373| 1) c_~N~0) (<= c_~N~0 (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse7)) (<= |aux_mod_ULTIMATE.start_main_~i~0#1_45| 2147483647) (= (select (store (store (let ((.cse9 (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| (store (store .cse10 .cse11 v_ArrVal_1038) (+ (* 8 (mod |v_ULTIMATE.start_main_~i~0#1_373| 4294967296)) (- 34359738368) |c_ULTIMATE.start_main_~b~0#1.offset|) v_ArrVal_1041)))) (let ((.cse8 (store (select .cse9 |c_ULTIMATE.start_main_~c~0#1.base|) |c_ULTIMATE.start_main_~c~0#1.offset| 0))) (store .cse8 .cse3 (select (select (store .cse9 |c_ULTIMATE.start_main_~c~0#1.base| .cse8) |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset|)))) .cse5 v_ArrVal_1048) (+ (* (mod |aux_mod_ULTIMATE.start_main_~i~0#1_45| 4294967296) 8) |c_ULTIMATE.start_main_~c~0#1.offset| (- 34359738368)) v_ArrVal_1052) .cse3) 1) (< (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse7 1) c_~N~0)))) .cse12))) (or .cse0 (and (or (forall ((v_arrayElimArr_77 (Array Int Int)) (v_ArrVal_1052 Int) (|aux_div_ULTIMATE.start_main_~i~0#1_45| Int) (v_ArrVal_1048 Int) (|aux_mod_ULTIMATE.start_main_~i~0#1_45| Int)) (let ((.cse15 (* |aux_div_ULTIMATE.start_main_~i~0#1_45| 4294967296))) (or (= (select (store (store (let ((.cse14 (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| v_arrayElimArr_77))) (let ((.cse13 (store (select .cse14 |c_ULTIMATE.start_main_~c~0#1.base|) |c_ULTIMATE.start_main_~c~0#1.offset| 0))) (store .cse13 .cse3 (select (select (store .cse14 |c_ULTIMATE.start_main_~c~0#1.base| .cse13) |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset|)))) .cse5 v_ArrVal_1048) (+ (* (mod |aux_mod_ULTIMATE.start_main_~i~0#1_45| 4294967296) 8) |c_ULTIMATE.start_main_~c~0#1.offset|) v_ArrVal_1052) .cse3) 1) (< 2147483647 |aux_mod_ULTIMATE.start_main_~i~0#1_45|) (<= c_~N~0 (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse15)) (< |aux_mod_ULTIMATE.start_main_~i~0#1_45| 0) (< (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse15 1) c_~N~0)))) .cse1) (or (forall ((v_ArrVal_1041 Int) (v_ArrVal_1052 Int) (|aux_div_ULTIMATE.start_main_~i~0#1_45| Int) (v_ArrVal_1048 Int) (|v_ULTIMATE.start_main_~i~0#1_372| Int) (v_ArrVal_1038 Int) (|aux_mod_ULTIMATE.start_main_~i~0#1_45| Int)) (let ((.cse18 (* |aux_div_ULTIMATE.start_main_~i~0#1_45| 4294967296))) (or (not (< |v_ULTIMATE.start_main_~i~0#1_372| c_~N~0)) (< 2147483647 |aux_mod_ULTIMATE.start_main_~i~0#1_45|) (= (select (store (store (let ((.cse17 (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| (store (store .cse10 .cse11 v_ArrVal_1038) (+ (* 8 (mod |v_ULTIMATE.start_main_~i~0#1_372| 4294967296)) |c_ULTIMATE.start_main_~b~0#1.offset|) v_ArrVal_1041)))) (let ((.cse16 (store (select .cse17 |c_ULTIMATE.start_main_~c~0#1.base|) |c_ULTIMATE.start_main_~c~0#1.offset| 0))) (store .cse16 .cse3 (select (select (store .cse17 |c_ULTIMATE.start_main_~c~0#1.base| .cse16) |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset|)))) .cse5 v_ArrVal_1048) (+ (* (mod |aux_mod_ULTIMATE.start_main_~i~0#1_45| 4294967296) 8) |c_ULTIMATE.start_main_~c~0#1.offset|) v_ArrVal_1052) .cse3) 1) (< (+ |v_ULTIMATE.start_main_~i~0#1_372| 1) c_~N~0) (<= c_~N~0 (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse18)) (< |aux_mod_ULTIMATE.start_main_~i~0#1_45| 0) (< (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse18 1) c_~N~0)))) .cse12))) (or (forall ((v_ArrVal_1041 Int) (v_ArrVal_1052 Int) (|aux_div_ULTIMATE.start_main_~i~0#1_45| Int) (v_ArrVal_1048 Int) (|v_ULTIMATE.start_main_~i~0#1_372| Int) (v_ArrVal_1038 Int) (|aux_mod_ULTIMATE.start_main_~i~0#1_45| Int)) (let ((.cse22 (* |aux_div_ULTIMATE.start_main_~i~0#1_45| 4294967296))) (or (not (< |v_ULTIMATE.start_main_~i~0#1_372| c_~N~0)) (< 2147483647 |aux_mod_ULTIMATE.start_main_~i~0#1_45|) (= (select (store (store (let ((.cse20 (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| (store (store .cse10 .cse21 v_ArrVal_1038) (+ (* 8 (mod |v_ULTIMATE.start_main_~i~0#1_372| 4294967296)) |c_ULTIMATE.start_main_~b~0#1.offset|) v_ArrVal_1041)))) (let ((.cse19 (store (select .cse20 |c_ULTIMATE.start_main_~c~0#1.base|) |c_ULTIMATE.start_main_~c~0#1.offset| 0))) (store .cse19 .cse3 (select (select (store .cse20 |c_ULTIMATE.start_main_~c~0#1.base| .cse19) |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset|)))) .cse5 v_ArrVal_1048) (+ (* (mod |aux_mod_ULTIMATE.start_main_~i~0#1_45| 4294967296) 8) |c_ULTIMATE.start_main_~c~0#1.offset|) v_ArrVal_1052) .cse3) 1) (< (+ |v_ULTIMATE.start_main_~i~0#1_372| 1) c_~N~0) (<= c_~N~0 (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse22)) (< |aux_mod_ULTIMATE.start_main_~i~0#1_45| 0) (< (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse22 1) c_~N~0)))) .cse23) (or (forall ((v_ArrVal_1041 Int) (v_ArrVal_1052 Int) (|v_ULTIMATE.start_main_~i~0#1_373| Int) (|aux_div_ULTIMATE.start_main_~i~0#1_45| Int) (v_ArrVal_1048 Int) (v_ArrVal_1038 Int) (|aux_mod_ULTIMATE.start_main_~i~0#1_45| Int)) (let ((.cse26 (* |aux_div_ULTIMATE.start_main_~i~0#1_45| 4294967296))) (or (not (< |v_ULTIMATE.start_main_~i~0#1_373| c_~N~0)) (= (select (store (store (let ((.cse25 (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| (store (store .cse10 .cse21 v_ArrVal_1038) (+ (* 8 (mod |v_ULTIMATE.start_main_~i~0#1_373| 4294967296)) (- 34359738368) |c_ULTIMATE.start_main_~b~0#1.offset|) v_ArrVal_1041)))) (let ((.cse24 (store (select .cse25 |c_ULTIMATE.start_main_~c~0#1.base|) |c_ULTIMATE.start_main_~c~0#1.offset| 0))) (store .cse24 .cse3 (select (select (store .cse25 |c_ULTIMATE.start_main_~c~0#1.base| .cse24) |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset|)))) .cse5 v_ArrVal_1048) (+ (* (mod |aux_mod_ULTIMATE.start_main_~i~0#1_45| 4294967296) 8) |c_ULTIMATE.start_main_~c~0#1.offset| (- 34359738368)) v_ArrVal_1052) .cse3) 1) (<= 4294967296 |aux_mod_ULTIMATE.start_main_~i~0#1_45|) (< (+ |v_ULTIMATE.start_main_~i~0#1_373| 1) c_~N~0) (<= c_~N~0 (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse26)) (<= |aux_mod_ULTIMATE.start_main_~i~0#1_45| 2147483647) (< (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse26 1) c_~N~0)))) .cse23))))) (not (< 1 c_~N~0))) is different from false [2022-11-22 02:00:53,829 INFO L321 Elim1Store]: treesize reduction 28, result has 60.0 percent of original size [2022-11-22 02:00:53,830 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 112 treesize of output 94 [2022-11-22 02:00:53,871 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-22 02:00:53,879 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-22 02:00:53,920 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-22 02:00:53,921 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 116 treesize of output 81 [2022-11-22 02:00:56,041 WARN L859 $PredicateComparison]: unable to prove that (or (let ((.cse50 (+ |c_ULTIMATE.start_main_~i~0#1| 1))) (let ((.cse53 (mod .cse50 4294967296))) (let ((.cse51 (mod |c_ULTIMATE.start_main_~i~0#1| 4294967296)) (.cse52 (* .cse53 8)) (.cse16 (<= .cse53 2147483647))) (let ((.cse20 (not .cse16)) (.cse23 (+ .cse52 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse12 (select |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base|)) (.cse14 (+ .cse52 (- 34359738368) |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse5 (+ 16 |c_ULTIMATE.start_main_~c~0#1.offset|)) (.cse3 (+ 8 |c_ULTIMATE.start_main_~c~0#1.offset|)) (.cse28 (* .cse51 8)) (.cse0 (<= .cse51 2147483647))) (and (or (not .cse0) (let ((.cse1 (= |c_ULTIMATE.start_main_~i~0#1| 0))) (and (or (not .cse1) (and (forall ((v_arrayElimArr_79 (Array Int Int)) (v_ArrVal_1052 Int) (|aux_div_ULTIMATE.start_main_~i~0#1_45| Int) (v_ArrVal_1048 Int) (|aux_mod_ULTIMATE.start_main_~i~0#1_45| Int)) (let ((.cse6 (* |aux_div_ULTIMATE.start_main_~i~0#1_45| 4294967296))) (or (< 2147483647 |aux_mod_ULTIMATE.start_main_~i~0#1_45|) (= (select (store (store (let ((.cse4 (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| v_arrayElimArr_79))) (let ((.cse2 (store (select .cse4 |c_ULTIMATE.start_main_~c~0#1.base|) |c_ULTIMATE.start_main_~c~0#1.offset| 0))) (store .cse2 .cse3 (select (select (store .cse4 |c_ULTIMATE.start_main_~c~0#1.base| .cse2) |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset|)))) .cse5 v_ArrVal_1048) (+ (* (mod |aux_mod_ULTIMATE.start_main_~i~0#1_45| 4294967296) 8) |c_ULTIMATE.start_main_~c~0#1.offset|) v_ArrVal_1052) .cse3) 1) (<= c_~N~0 (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse6)) (< |aux_mod_ULTIMATE.start_main_~i~0#1_45| 0) (< (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse6 1) c_~N~0)))) (forall ((v_ArrVal_1052 Int) (|aux_div_ULTIMATE.start_main_~i~0#1_45| Int) (v_arrayElimArr_80 (Array Int Int)) (v_ArrVal_1048 Int) (|aux_mod_ULTIMATE.start_main_~i~0#1_45| Int)) (let ((.cse9 (* |aux_div_ULTIMATE.start_main_~i~0#1_45| 4294967296))) (or (<= 4294967296 |aux_mod_ULTIMATE.start_main_~i~0#1_45|) (= (select (store (store (let ((.cse8 (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| v_arrayElimArr_80))) (let ((.cse7 (store (select .cse8 |c_ULTIMATE.start_main_~c~0#1.base|) |c_ULTIMATE.start_main_~c~0#1.offset| 0))) (store .cse7 .cse3 (select (select (store .cse8 |c_ULTIMATE.start_main_~c~0#1.base| .cse7) |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset|)))) .cse5 v_ArrVal_1048) (+ (* (mod |aux_mod_ULTIMATE.start_main_~i~0#1_45| 4294967296) 8) |c_ULTIMATE.start_main_~c~0#1.offset| (- 34359738368)) v_ArrVal_1052) .cse3) 1) (<= c_~N~0 (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse9)) (<= |aux_mod_ULTIMATE.start_main_~i~0#1_45| 2147483647) (< (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse9 1) c_~N~0)))))) (or (let ((.cse13 (+ .cse28 |c_ULTIMATE.start_main_~b~0#1.offset|))) (and (or (forall ((v_ArrVal_1041 Int) (v_ArrVal_1052 Int) (v_ArrVal_1033 Int) (|v_ULTIMATE.start_main_~i~0#1_373| Int) (|aux_div_ULTIMATE.start_main_~i~0#1_45| Int) (v_ArrVal_1048 Int) (v_ArrVal_1038 Int) (|aux_mod_ULTIMATE.start_main_~i~0#1_45| Int)) (let ((.cse15 (* |aux_div_ULTIMATE.start_main_~i~0#1_45| 4294967296))) (or (not (< |v_ULTIMATE.start_main_~i~0#1_373| c_~N~0)) (= (select (store (store (let ((.cse11 (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| (store (store (store .cse12 .cse13 v_ArrVal_1033) .cse14 v_ArrVal_1038) (+ (* 8 (mod |v_ULTIMATE.start_main_~i~0#1_373| 4294967296)) (- 34359738368) |c_ULTIMATE.start_main_~b~0#1.offset|) v_ArrVal_1041)))) (let ((.cse10 (store (select .cse11 |c_ULTIMATE.start_main_~c~0#1.base|) |c_ULTIMATE.start_main_~c~0#1.offset| 0))) (store .cse10 .cse3 (select (select (store .cse11 |c_ULTIMATE.start_main_~c~0#1.base| .cse10) |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset|)))) .cse5 v_ArrVal_1048) (+ (* (mod |aux_mod_ULTIMATE.start_main_~i~0#1_45| 4294967296) 8) |c_ULTIMATE.start_main_~c~0#1.offset| (- 34359738368)) v_ArrVal_1052) .cse3) 1) (<= 4294967296 |aux_mod_ULTIMATE.start_main_~i~0#1_45|) (< (+ |v_ULTIMATE.start_main_~i~0#1_373| 1) c_~N~0) (<= c_~N~0 (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse15)) (<= |aux_mod_ULTIMATE.start_main_~i~0#1_45| 2147483647) (< (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse15 1) c_~N~0)))) .cse16) (or .cse16 (forall ((v_ArrVal_1041 Int) (v_ArrVal_1052 Int) (v_ArrVal_1033 Int) (|aux_div_ULTIMATE.start_main_~i~0#1_45| Int) (v_ArrVal_1048 Int) (|v_ULTIMATE.start_main_~i~0#1_372| Int) (v_ArrVal_1038 Int) (|aux_mod_ULTIMATE.start_main_~i~0#1_45| Int)) (let ((.cse19 (* |aux_div_ULTIMATE.start_main_~i~0#1_45| 4294967296))) (or (not (< |v_ULTIMATE.start_main_~i~0#1_372| c_~N~0)) (< 2147483647 |aux_mod_ULTIMATE.start_main_~i~0#1_45|) (= (select (store (store (let ((.cse18 (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| (store (store (store .cse12 .cse13 v_ArrVal_1033) .cse14 v_ArrVal_1038) (+ (* 8 (mod |v_ULTIMATE.start_main_~i~0#1_372| 4294967296)) |c_ULTIMATE.start_main_~b~0#1.offset|) v_ArrVal_1041)))) (let ((.cse17 (store (select .cse18 |c_ULTIMATE.start_main_~c~0#1.base|) |c_ULTIMATE.start_main_~c~0#1.offset| 0))) (store .cse17 .cse3 (select (select (store .cse18 |c_ULTIMATE.start_main_~c~0#1.base| .cse17) |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset|)))) .cse5 v_ArrVal_1048) (+ (* (mod |aux_mod_ULTIMATE.start_main_~i~0#1_45| 4294967296) 8) |c_ULTIMATE.start_main_~c~0#1.offset|) v_ArrVal_1052) .cse3) 1) (< (+ |v_ULTIMATE.start_main_~i~0#1_372| 1) c_~N~0) (<= c_~N~0 (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse19)) (< |aux_mod_ULTIMATE.start_main_~i~0#1_45| 0) (< (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse19 1) c_~N~0))))) (or .cse20 (forall ((v_ArrVal_1041 Int) (v_ArrVal_1052 Int) (v_ArrVal_1033 Int) (|aux_div_ULTIMATE.start_main_~i~0#1_45| Int) (v_ArrVal_1048 Int) (|v_ULTIMATE.start_main_~i~0#1_372| Int) (v_ArrVal_1038 Int) (|aux_mod_ULTIMATE.start_main_~i~0#1_45| Int)) (let ((.cse24 (* |aux_div_ULTIMATE.start_main_~i~0#1_45| 4294967296))) (or (not (< |v_ULTIMATE.start_main_~i~0#1_372| c_~N~0)) (< 2147483647 |aux_mod_ULTIMATE.start_main_~i~0#1_45|) (< (+ |v_ULTIMATE.start_main_~i~0#1_372| 1) c_~N~0) (= (select (store (store (let ((.cse22 (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| (store (store (store .cse12 .cse13 v_ArrVal_1033) .cse23 v_ArrVal_1038) (+ (* 8 (mod |v_ULTIMATE.start_main_~i~0#1_372| 4294967296)) |c_ULTIMATE.start_main_~b~0#1.offset|) v_ArrVal_1041)))) (let ((.cse21 (store (select .cse22 |c_ULTIMATE.start_main_~c~0#1.base|) |c_ULTIMATE.start_main_~c~0#1.offset| 0))) (store .cse21 .cse3 (select (select (store .cse22 |c_ULTIMATE.start_main_~c~0#1.base| .cse21) |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset|)))) .cse5 v_ArrVal_1048) (+ (* (mod |aux_mod_ULTIMATE.start_main_~i~0#1_45| 4294967296) 8) |c_ULTIMATE.start_main_~c~0#1.offset|) v_ArrVal_1052) .cse3) 1) (<= c_~N~0 (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse24)) (< |aux_mod_ULTIMATE.start_main_~i~0#1_45| 0) (< (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse24 1) c_~N~0))))) (or (forall ((v_ArrVal_1041 Int) (v_ArrVal_1052 Int) (v_ArrVal_1033 Int) (|v_ULTIMATE.start_main_~i~0#1_373| Int) (|aux_div_ULTIMATE.start_main_~i~0#1_45| Int) (v_ArrVal_1048 Int) (v_ArrVal_1038 Int) (|aux_mod_ULTIMATE.start_main_~i~0#1_45| Int)) (let ((.cse25 (* |aux_div_ULTIMATE.start_main_~i~0#1_45| 4294967296))) (or (not (< |v_ULTIMATE.start_main_~i~0#1_373| c_~N~0)) (<= 4294967296 |aux_mod_ULTIMATE.start_main_~i~0#1_45|) (< (+ |v_ULTIMATE.start_main_~i~0#1_373| 1) c_~N~0) (<= c_~N~0 (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse25)) (<= |aux_mod_ULTIMATE.start_main_~i~0#1_45| 2147483647) (< (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse25 1) c_~N~0) (= (select (store (store (let ((.cse27 (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| (store (store (store .cse12 .cse13 v_ArrVal_1033) .cse23 v_ArrVal_1038) (+ (* 8 (mod |v_ULTIMATE.start_main_~i~0#1_373| 4294967296)) (- 34359738368) |c_ULTIMATE.start_main_~b~0#1.offset|) v_ArrVal_1041)))) (let ((.cse26 (store (select .cse27 |c_ULTIMATE.start_main_~c~0#1.base|) |c_ULTIMATE.start_main_~c~0#1.offset| 0))) (store .cse26 .cse3 (select (select (store .cse27 |c_ULTIMATE.start_main_~c~0#1.base| .cse26) |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset|)))) .cse5 v_ArrVal_1048) (+ (* (mod |aux_mod_ULTIMATE.start_main_~i~0#1_45| 4294967296) 8) |c_ULTIMATE.start_main_~c~0#1.offset| (- 34359738368)) v_ArrVal_1052) .cse3) 1)))) .cse20))) .cse1)))) (or (let ((.cse37 (= .cse50 0))) (let ((.cse29 (not .cse37)) (.cse35 (+ .cse28 (- 34359738368) |c_ULTIMATE.start_main_~b~0#1.offset|))) (and (or .cse20 (and (or .cse29 (forall ((v_arrayElimArr_78 (Array Int Int)) (v_ArrVal_1052 Int) (|aux_div_ULTIMATE.start_main_~i~0#1_45| Int) (v_ArrVal_1048 Int) (|aux_mod_ULTIMATE.start_main_~i~0#1_45| Int)) (let ((.cse32 (* |aux_div_ULTIMATE.start_main_~i~0#1_45| 4294967296))) (or (= (select (store (store (let ((.cse31 (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| v_arrayElimArr_78))) (let ((.cse30 (store (select .cse31 |c_ULTIMATE.start_main_~c~0#1.base|) |c_ULTIMATE.start_main_~c~0#1.offset| 0))) (store .cse30 .cse3 (select (select (store .cse31 |c_ULTIMATE.start_main_~c~0#1.base| .cse30) |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset|)))) .cse5 v_ArrVal_1048) (+ (* (mod |aux_mod_ULTIMATE.start_main_~i~0#1_45| 4294967296) 8) |c_ULTIMATE.start_main_~c~0#1.offset| (- 34359738368)) v_ArrVal_1052) .cse3) 1) (<= 4294967296 |aux_mod_ULTIMATE.start_main_~i~0#1_45|) (<= c_~N~0 (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse32)) (<= |aux_mod_ULTIMATE.start_main_~i~0#1_45| 2147483647) (< (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse32 1) c_~N~0))))) (or (forall ((v_ArrVal_1041 Int) (v_ArrVal_1052 Int) (v_ArrVal_1033 Int) (|v_ULTIMATE.start_main_~i~0#1_373| Int) (|aux_div_ULTIMATE.start_main_~i~0#1_45| Int) (v_ArrVal_1048 Int) (v_ArrVal_1038 Int) (|aux_mod_ULTIMATE.start_main_~i~0#1_45| Int)) (let ((.cse36 (* |aux_div_ULTIMATE.start_main_~i~0#1_45| 4294967296))) (or (not (< |v_ULTIMATE.start_main_~i~0#1_373| c_~N~0)) (<= 4294967296 |aux_mod_ULTIMATE.start_main_~i~0#1_45|) (< (+ |v_ULTIMATE.start_main_~i~0#1_373| 1) c_~N~0) (= (select (store (store (let ((.cse34 (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| (store (store (store .cse12 .cse35 v_ArrVal_1033) .cse23 v_ArrVal_1038) (+ (* 8 (mod |v_ULTIMATE.start_main_~i~0#1_373| 4294967296)) (- 34359738368) |c_ULTIMATE.start_main_~b~0#1.offset|) v_ArrVal_1041)))) (let ((.cse33 (store (select .cse34 |c_ULTIMATE.start_main_~c~0#1.base|) |c_ULTIMATE.start_main_~c~0#1.offset| 0))) (store .cse33 .cse3 (select (select (store .cse34 |c_ULTIMATE.start_main_~c~0#1.base| .cse33) |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset|)))) .cse5 v_ArrVal_1048) (+ (* (mod |aux_mod_ULTIMATE.start_main_~i~0#1_45| 4294967296) 8) |c_ULTIMATE.start_main_~c~0#1.offset| (- 34359738368)) v_ArrVal_1052) .cse3) 1) (<= c_~N~0 (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse36)) (<= |aux_mod_ULTIMATE.start_main_~i~0#1_45| 2147483647) (< (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse36 1) c_~N~0)))) .cse37))) (or .cse16 (forall ((v_ArrVal_1041 Int) (v_ArrVal_1052 Int) (v_ArrVal_1033 Int) (|aux_div_ULTIMATE.start_main_~i~0#1_45| Int) (v_ArrVal_1048 Int) (|v_ULTIMATE.start_main_~i~0#1_372| Int) (v_ArrVal_1038 Int) (|aux_mod_ULTIMATE.start_main_~i~0#1_45| Int)) (let ((.cse40 (* |aux_div_ULTIMATE.start_main_~i~0#1_45| 4294967296))) (or (= (select (store (store (let ((.cse39 (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| (store (store (store .cse12 .cse35 v_ArrVal_1033) .cse14 v_ArrVal_1038) (+ (* 8 (mod |v_ULTIMATE.start_main_~i~0#1_372| 4294967296)) |c_ULTIMATE.start_main_~b~0#1.offset|) v_ArrVal_1041)))) (let ((.cse38 (store (select .cse39 |c_ULTIMATE.start_main_~c~0#1.base|) |c_ULTIMATE.start_main_~c~0#1.offset| 0))) (store .cse38 .cse3 (select (select (store .cse39 |c_ULTIMATE.start_main_~c~0#1.base| .cse38) |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset|)))) .cse5 v_ArrVal_1048) (+ (* (mod |aux_mod_ULTIMATE.start_main_~i~0#1_45| 4294967296) 8) |c_ULTIMATE.start_main_~c~0#1.offset|) v_ArrVal_1052) .cse3) 1) (not (< |v_ULTIMATE.start_main_~i~0#1_372| c_~N~0)) (< 2147483647 |aux_mod_ULTIMATE.start_main_~i~0#1_45|) (< (+ |v_ULTIMATE.start_main_~i~0#1_372| 1) c_~N~0) (<= c_~N~0 (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse40)) (< |aux_mod_ULTIMATE.start_main_~i~0#1_45| 0) (< (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse40 1) c_~N~0))))) (or .cse20 (and (or .cse37 (forall ((v_ArrVal_1041 Int) (v_ArrVal_1052 Int) (v_ArrVal_1033 Int) (|aux_div_ULTIMATE.start_main_~i~0#1_45| Int) (v_ArrVal_1048 Int) (|v_ULTIMATE.start_main_~i~0#1_372| Int) (v_ArrVal_1038 Int) (|aux_mod_ULTIMATE.start_main_~i~0#1_45| Int)) (let ((.cse43 (* |aux_div_ULTIMATE.start_main_~i~0#1_45| 4294967296))) (or (not (< |v_ULTIMATE.start_main_~i~0#1_372| c_~N~0)) (< 2147483647 |aux_mod_ULTIMATE.start_main_~i~0#1_45|) (= 1 (select (store (store (let ((.cse42 (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| (store (store (store .cse12 .cse35 v_ArrVal_1033) .cse23 v_ArrVal_1038) (+ (* 8 (mod |v_ULTIMATE.start_main_~i~0#1_372| 4294967296)) |c_ULTIMATE.start_main_~b~0#1.offset|) v_ArrVal_1041)))) (let ((.cse41 (store (select .cse42 |c_ULTIMATE.start_main_~c~0#1.base|) |c_ULTIMATE.start_main_~c~0#1.offset| 0))) (store .cse41 .cse3 (select (select (store .cse42 |c_ULTIMATE.start_main_~c~0#1.base| .cse41) |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset|)))) .cse5 v_ArrVal_1048) (+ (* (mod |aux_mod_ULTIMATE.start_main_~i~0#1_45| 4294967296) 8) |c_ULTIMATE.start_main_~c~0#1.offset|) v_ArrVal_1052) .cse3)) (< (+ |v_ULTIMATE.start_main_~i~0#1_372| 1) c_~N~0) (<= c_~N~0 (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse43)) (< |aux_mod_ULTIMATE.start_main_~i~0#1_45| 0) (< (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse43 1) c_~N~0))))) (or (forall ((v_arrayElimArr_77 (Array Int Int)) (v_ArrVal_1052 Int) (|aux_div_ULTIMATE.start_main_~i~0#1_45| Int) (v_ArrVal_1048 Int) (|aux_mod_ULTIMATE.start_main_~i~0#1_45| Int)) (let ((.cse46 (* |aux_div_ULTIMATE.start_main_~i~0#1_45| 4294967296))) (or (= (select (store (store (let ((.cse45 (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| v_arrayElimArr_77))) (let ((.cse44 (store (select .cse45 |c_ULTIMATE.start_main_~c~0#1.base|) |c_ULTIMATE.start_main_~c~0#1.offset| 0))) (store .cse44 .cse3 (select (select (store .cse45 |c_ULTIMATE.start_main_~c~0#1.base| .cse44) |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset|)))) .cse5 v_ArrVal_1048) (+ (* (mod |aux_mod_ULTIMATE.start_main_~i~0#1_45| 4294967296) 8) |c_ULTIMATE.start_main_~c~0#1.offset|) v_ArrVal_1052) .cse3) 1) (< 2147483647 |aux_mod_ULTIMATE.start_main_~i~0#1_45|) (<= c_~N~0 (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse46)) (< |aux_mod_ULTIMATE.start_main_~i~0#1_45| 0) (< (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse46 1) c_~N~0)))) .cse29))) (or .cse16 (forall ((v_ArrVal_1041 Int) (v_ArrVal_1052 Int) (v_ArrVal_1033 Int) (|v_ULTIMATE.start_main_~i~0#1_373| Int) (|aux_div_ULTIMATE.start_main_~i~0#1_45| Int) (v_ArrVal_1048 Int) (v_ArrVal_1038 Int) (|aux_mod_ULTIMATE.start_main_~i~0#1_45| Int)) (let ((.cse49 (* |aux_div_ULTIMATE.start_main_~i~0#1_45| 4294967296))) (or (= (select (store (store (let ((.cse48 (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| (store (store (store .cse12 .cse35 v_ArrVal_1033) .cse14 v_ArrVal_1038) (+ (* 8 (mod |v_ULTIMATE.start_main_~i~0#1_373| 4294967296)) (- 34359738368) |c_ULTIMATE.start_main_~b~0#1.offset|) v_ArrVal_1041)))) (let ((.cse47 (store (select .cse48 |c_ULTIMATE.start_main_~c~0#1.base|) |c_ULTIMATE.start_main_~c~0#1.offset| 0))) (store .cse47 .cse3 (select (select (store .cse48 |c_ULTIMATE.start_main_~c~0#1.base| .cse47) |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset|)))) .cse5 v_ArrVal_1048) (+ (* (mod |aux_mod_ULTIMATE.start_main_~i~0#1_45| 4294967296) 8) |c_ULTIMATE.start_main_~c~0#1.offset| (- 34359738368)) v_ArrVal_1052) .cse3) 1) (not (< |v_ULTIMATE.start_main_~i~0#1_373| c_~N~0)) (<= 4294967296 |aux_mod_ULTIMATE.start_main_~i~0#1_45|) (< (+ |v_ULTIMATE.start_main_~i~0#1_373| 1) c_~N~0) (<= c_~N~0 (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse49)) (<= |aux_mod_ULTIMATE.start_main_~i~0#1_45| 2147483647) (< (+ |aux_mod_ULTIMATE.start_main_~i~0#1_45| .cse49 1) c_~N~0)))))))) .cse0)))))) (not (< 1 c_~N~0))) is different from true [2022-11-22 02:00:56,370 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-22 02:00:56,370 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 37 treesize of output 51 [2022-11-22 02:00:56,400 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-22 02:00:56,401 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 8 [2022-11-22 02:03:28,736 WARN L233 SmtUtils]: Spent 2.51m on a formula simplification. DAG size of input: 204 DAG size of output: 144 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-11-22 02:03:28,737 INFO L321 Elim1Store]: treesize reduction 440, result has 42.7 percent of original size [2022-11-22 02:03:28,738 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 9 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 10 new quantified variables, introduced 26 case distinctions, treesize of input 33140 treesize of output 20536 [2022-11-22 02:03:33,275 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31623 treesize of output 31617 [2022-11-22 02:03:34,108 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31608 treesize of output 31602 [2022-11-22 02:03:36,580 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31873 treesize of output 31867 [2022-11-22 02:03:38,068 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32176 treesize of output 32170