./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-tiling/pr3.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a 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_caff0959-c3a4-4e30-a77a-468d741d96ab/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caff0959-c3a4-4e30-a77a-468d741d96ab/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caff0959-c3a4-4e30-a77a-468d741d96ab/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caff0959-c3a4-4e30-a77a-468d741d96ab/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-tiling/pr3.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caff0959-c3a4-4e30-a77a-468d741d96ab/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caff0959-c3a4-4e30-a77a-468d741d96ab/bin/utaipan-7li7fVZpFI --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 73efddcda095c52d9900d13088d1ec70520de6007541f46343a568e878cf2ed4 --- 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-5e519f3 [2022-11-03 02:50:14,143 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 02:50:14,146 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 02:50:14,195 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 02:50:14,196 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 02:50:14,201 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 02:50:14,202 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 02:50:14,205 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 02:50:14,206 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 02:50:14,207 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 02:50:14,208 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 02:50:14,209 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 02:50:14,210 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 02:50:14,211 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 02:50:14,212 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 02:50:14,213 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 02:50:14,214 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 02:50:14,215 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 02:50:14,217 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 02:50:14,219 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 02:50:14,221 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 02:50:14,228 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 02:50:14,230 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 02:50:14,231 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 02:50:14,234 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 02:50:14,235 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 02:50:14,235 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 02:50:14,236 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 02:50:14,236 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 02:50:14,237 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 02:50:14,238 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 02:50:14,239 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 02:50:14,239 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 02:50:14,240 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 02:50:14,241 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 02:50:14,242 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 02:50:14,249 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 02:50:14,251 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 02:50:14,251 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 02:50:14,252 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 02:50:14,253 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 02:50:14,254 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caff0959-c3a4-4e30-a77a-468d741d96ab/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-03 02:50:14,299 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 02:50:14,299 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 02:50:14,300 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 02:50:14,300 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 02:50:14,301 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 02:50:14,301 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 02:50:14,301 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 02:50:14,302 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 02:50:14,302 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 02:50:14,302 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 02:50:14,303 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 02:50:14,303 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 02:50:14,304 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 02:50:14,304 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 02:50:14,304 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 02:50:14,304 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 02:50:14,304 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 02:50:14,304 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 02:50:14,305 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 02:50:14,305 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-03 02:50:14,306 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 02:50:14,306 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-03 02:50:14,306 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 02:50:14,306 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 02:50:14,306 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 02:50:14,307 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 02:50:14,307 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-03 02:50:14,307 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 02:50:14,307 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 02:50:14,307 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 02:50:14,308 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 02:50:14,308 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 02:50:14,308 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:50:14,308 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 02:50:14,309 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 02:50:14,309 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 02:50:14,309 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 02:50:14,309 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 02:50:14,309 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 02:50:14,310 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 02:50:14,310 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 02:50:14,310 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_caff0959-c3a4-4e30-a77a-468d741d96ab/bin/utaipan-7li7fVZpFI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caff0959-c3a4-4e30-a77a-468d741d96ab/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 73efddcda095c52d9900d13088d1ec70520de6007541f46343a568e878cf2ed4 [2022-11-03 02:50:14,608 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 02:50:14,632 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 02:50:14,635 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 02:50:14,636 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 02:50:14,637 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 02:50:14,639 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caff0959-c3a4-4e30-a77a-468d741d96ab/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/array-tiling/pr3.c [2022-11-03 02:50:14,720 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caff0959-c3a4-4e30-a77a-468d741d96ab/bin/utaipan-7li7fVZpFI/data/bce563574/dfe1d2dbb9f7438083e8294b54260c6c/FLAG64d9401d2 [2022-11-03 02:50:15,235 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 02:50:15,238 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caff0959-c3a4-4e30-a77a-468d741d96ab/sv-benchmarks/c/array-tiling/pr3.c [2022-11-03 02:50:15,251 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caff0959-c3a4-4e30-a77a-468d741d96ab/bin/utaipan-7li7fVZpFI/data/bce563574/dfe1d2dbb9f7438083e8294b54260c6c/FLAG64d9401d2 [2022-11-03 02:50:15,567 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caff0959-c3a4-4e30-a77a-468d741d96ab/bin/utaipan-7li7fVZpFI/data/bce563574/dfe1d2dbb9f7438083e8294b54260c6c [2022-11-03 02:50:15,570 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 02:50:15,571 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 02:50:15,573 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 02:50:15,573 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 02:50:15,577 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 02:50:15,578 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:50:15" (1/1) ... [2022-11-03 02:50:15,579 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56ab189e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:50:15, skipping insertion in model container [2022-11-03 02:50:15,579 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:50:15" (1/1) ... [2022-11-03 02:50:15,588 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 02:50:15,603 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 02:50:15,801 WARN L230 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_caff0959-c3a4-4e30-a77a-468d741d96ab/sv-benchmarks/c/array-tiling/pr3.c[394,407] [2022-11-03 02:50:15,832 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:50:15,841 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 02:50:15,852 WARN L230 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_caff0959-c3a4-4e30-a77a-468d741d96ab/sv-benchmarks/c/array-tiling/pr3.c[394,407] [2022-11-03 02:50:15,862 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:50:15,876 INFO L208 MainTranslator]: Completed translation [2022-11-03 02:50:15,876 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:50:15 WrapperNode [2022-11-03 02:50:15,876 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 02:50:15,877 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 02:50:15,877 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 02:50:15,878 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 02:50:15,886 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:50:15" (1/1) ... [2022-11-03 02:50:15,893 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:50:15" (1/1) ... [2022-11-03 02:50:15,915 INFO L138 Inliner]: procedures = 15, calls = 26, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 79 [2022-11-03 02:50:15,915 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 02:50:15,916 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 02:50:15,916 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 02:50:15,916 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 02:50:15,926 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:50:15" (1/1) ... [2022-11-03 02:50:15,927 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:50:15" (1/1) ... [2022-11-03 02:50:15,929 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:50:15" (1/1) ... [2022-11-03 02:50:15,929 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:50:15" (1/1) ... [2022-11-03 02:50:15,935 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:50:15" (1/1) ... [2022-11-03 02:50:15,939 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:50:15" (1/1) ... [2022-11-03 02:50:15,941 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:50:15" (1/1) ... [2022-11-03 02:50:15,942 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:50:15" (1/1) ... [2022-11-03 02:50:15,944 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 02:50:15,945 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 02:50:15,945 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 02:50:15,945 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 02:50:15,946 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:50:15" (1/1) ... [2022-11-03 02:50:15,955 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:50:15,968 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caff0959-c3a4-4e30-a77a-468d741d96ab/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:50:15,986 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caff0959-c3a4-4e30-a77a-468d741d96ab/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 02:50:16,021 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caff0959-c3a4-4e30-a77a-468d741d96ab/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 02:50:16,050 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 02:50:16,051 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 02:50:16,051 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-03 02:50:16,051 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-03 02:50:16,051 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 02:50:16,052 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 02:50:16,052 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-03 02:50:16,052 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-03 02:50:16,139 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 02:50:16,141 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 02:50:16,389 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 02:50:16,500 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 02:50:16,500 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-03 02:50:16,503 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:50:16 BoogieIcfgContainer [2022-11-03 02:50:16,503 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 02:50:16,505 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 02:50:16,506 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 02:50:16,510 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 02:50:16,510 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 02:50:15" (1/3) ... [2022-11-03 02:50:16,511 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28844d3c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:50:16, skipping insertion in model container [2022-11-03 02:50:16,511 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:50:15" (2/3) ... [2022-11-03 02:50:16,512 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28844d3c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:50:16, skipping insertion in model container [2022-11-03 02:50:16,512 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:50:16" (3/3) ... [2022-11-03 02:50:16,513 INFO L112 eAbstractionObserver]: Analyzing ICFG pr3.c [2022-11-03 02:50:16,533 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 02:50:16,534 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 02:50:16,589 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 02:50:16,597 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;@1a77ea9b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 02:50:16,598 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 02:50:16,602 INFO L276 IsEmpty]: Start isEmpty. Operand has 12 states, 10 states have (on average 1.6) internal successors, (16), 11 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) [2022-11-03 02:50:16,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-03 02:50:16,609 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:50:16,610 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:50:16,611 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:50:16,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:50:16,617 INFO L85 PathProgramCache]: Analyzing trace with hash -1521658220, now seen corresponding path program 1 times [2022-11-03 02:50:16,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:50:16,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262501147] [2022-11-03 02:50:16,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:50:16,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:50:16,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:50:17,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:50:17,155 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:50:17,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262501147] [2022-11-03 02:50:17,157 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1262501147] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:50:17,157 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:50:17,157 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 02:50:17,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072483035] [2022-11-03 02:50:17,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:50:17,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 02:50:17,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:50:17,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 02:50:17,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:50:17,195 INFO L87 Difference]: Start difference. First operand has 12 states, 10 states have (on average 1.6) internal successors, (16), 11 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) Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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) [2022-11-03 02:50:17,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:50:17,269 INFO L93 Difference]: Finished difference Result 24 states and 29 transitions. [2022-11-03 02:50:17,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 02:50:17,272 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-03 02:50:17,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:50:17,280 INFO L225 Difference]: With dead ends: 24 [2022-11-03 02:50:17,280 INFO L226 Difference]: Without dead ends: 10 [2022-11-03 02:50:17,283 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:50:17,287 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 12 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:50:17,288 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 12 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:50:17,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2022-11-03 02:50:17,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2022-11-03 02:50:17,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 9 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:50:17,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 11 transitions. [2022-11-03 02:50:17,323 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 11 transitions. Word has length 7 [2022-11-03 02:50:17,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:50:17,323 INFO L495 AbstractCegarLoop]: Abstraction has 10 states and 11 transitions. [2022-11-03 02:50:17,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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) [2022-11-03 02:50:17,324 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 11 transitions. [2022-11-03 02:50:17,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-03 02:50:17,324 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:50:17,324 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:50:17,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 02:50:17,325 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:50:17,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:50:17,326 INFO L85 PathProgramCache]: Analyzing trace with hash 76185712, now seen corresponding path program 1 times [2022-11-03 02:50:17,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:50:17,326 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259335282] [2022-11-03 02:50:17,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:50:17,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:50:17,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:50:18,249 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:50:18,250 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:50:18,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259335282] [2022-11-03 02:50:18,250 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1259335282] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:50:18,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [312714048] [2022-11-03 02:50:18,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:50:18,251 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:50:18,251 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caff0959-c3a4-4e30-a77a-468d741d96ab/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:50:18,253 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caff0959-c3a4-4e30-a77a-468d741d96ab/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:50:18,274 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caff0959-c3a4-4e30-a77a-468d741d96ab/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-03 02:50:18,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:50:18,368 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 28 conjunts are in the unsatisfiable core [2022-11-03 02:50:18,377 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:50:18,607 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:18,615 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 39 [2022-11-03 02:50:18,825 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:18,827 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:18,829 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 106 treesize of output 113 [2022-11-03 02:50:18,906 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-03 02:50:18,926 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 4 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 103 treesize of output 151 [2022-11-03 02:50:18,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:18,947 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:18,950 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 3 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 51 treesize of output 232 [2022-11-03 02:50:19,019 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 3 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 25 treesize of output 25 [2022-11-03 02:50:19,349 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 71 treesize of output 59 [2022-11-03 02:50:19,361 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-03 02:50:19,379 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 71 treesize of output 59 [2022-11-03 02:50:19,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:19,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:19,416 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 59 treesize of output 7 [2022-11-03 02:50:19,483 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 74 treesize of output 60 [2022-11-03 02:50:19,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:19,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:19,503 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 60 treesize of output 14 [2022-11-03 02:50:19,697 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 65 treesize of output 45 [2022-11-03 02:50:19,736 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:50:19,736 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:50:19,929 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:50:19,929 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 44 treesize of output 54 [2022-11-03 02:50:20,349 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:50:20,350 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:50:20,366 INFO L356 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2022-11-03 02:50:20,367 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 348 treesize of output 322 [2022-11-03 02:50:20,381 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 13 treesize of output 4 [2022-11-03 02:50:20,397 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:50:20,398 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [312714048] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:50:20,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [844266167] [2022-11-03 02:50:20,426 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-11-03 02:50:20,426 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 02:50:20,430 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 02:50:20,436 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 02:50:20,437 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 02:50:20,494 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:20,525 INFO L356 Elim1Store]: treesize reduction 24, result has 44.2 percent of original size [2022-11-03 02:50:20,526 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 24 treesize of output 40 [2022-11-03 02:50:20,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:20,580 INFO L356 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-11-03 02:50:20,581 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 32 treesize of output 49 [2022-11-03 02:50:20,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:20,710 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 8 select indices, 8 select index equivalence classes, 20 disjoint index pairs (out of 28 index pairs), introduced 10 new quantified variables, introduced 0 case distinctions, treesize of input 99 treesize of output 185 [2022-11-03 02:50:20,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:20,946 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:20,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:20,967 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 8 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 11 new quantified variables, introduced 0 case distinctions, treesize of input 562 treesize of output 802 [2022-11-03 02:50:21,057 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 376 treesize of output 384 [2022-11-03 02:50:21,165 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 378 treesize of output 386 [2022-11-03 02:50:21,257 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 380 treesize of output 388 [2022-11-03 02:50:21,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:21,360 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 382 treesize of output 390 [2022-11-03 02:50:21,436 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 362 treesize of output 355 [2022-11-03 02:50:21,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:21,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:21,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:21,537 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 4 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 95 treesize of output 598 [2022-11-03 02:50:22,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:22,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:22,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:22,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:22,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:22,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:22,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:22,922 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:22,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:22,928 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 10 stores, 3 select indices, 3 select index equivalence classes, 11 disjoint index pairs (out of 3 index pairs), introduced 10 new quantified variables, introduced 0 case distinctions, treesize of input 2070 treesize of output 2457 [2022-11-03 02:50:23,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:23,143 INFO L244 Elim1Store]: Index analysis took 109 ms [2022-11-03 02:50:23,157 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 7 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 2134 treesize of output 4601 [2022-11-03 02:50:23,357 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1595 treesize of output 1581 [2022-11-03 02:50:23,527 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1581 treesize of output 1567 [2022-11-03 02:50:24,120 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-11-03 02:50:24,490 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 21 [2022-11-03 02:50:25,430 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 2274 treesize of output 1826 [2022-11-03 02:50:27,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:27,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:27,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:27,310 INFO L244 Elim1Store]: Index analysis took 479 ms [2022-11-03 02:50:27,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:27,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:27,582 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:27,603 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:27,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:27,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:27,778 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 15 stores, 3 select indices, 3 select index equivalence classes, 12 disjoint index pairs (out of 3 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 4247 treesize of output 53137 [2022-11-03 02:50:34,345 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:50:34,346 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:50:34,358 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-11-03 02:50:34,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:34,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:34,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:34,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:34,425 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:34,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:34,430 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:34,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:34,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:34,437 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 7 stores, 3 select indices, 3 select index equivalence classes, 11 disjoint index pairs (out of 3 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 1348 treesize of output 1526 [2022-11-03 02:50:34,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:34,531 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 4 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 1338 treesize of output 1901 [2022-11-03 02:50:34,768 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 21 [2022-11-03 02:50:34,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:34,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:34,946 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:34,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:35,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:35,051 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:35,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:35,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:35,131 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:35,131 INFO L244 Elim1Store]: Index analysis took 217 ms [2022-11-03 02:50:35,152 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:35,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:35,188 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:35,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:35,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:35,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:35,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:35,292 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 6 stores, 2 select indices, 2 select index equivalence classes, 20 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 181 [2022-11-03 02:50:35,782 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 21 treesize of output 7 [2022-11-03 02:50:40,494 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:50:40,496 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:50:40,510 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-11-03 02:50:40,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:40,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:40,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:40,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:40,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:40,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:40,696 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:40,721 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:40,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:40,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:40,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:40,770 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:40,775 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:40,776 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 5 stores, 3 select indices, 3 select index equivalence classes, 15 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 136 treesize of output 95 [2022-11-03 02:50:40,788 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 21 treesize of output 7 [2022-11-03 02:50:42,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:42,639 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 49 [2022-11-03 02:50:42,683 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 5 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 283 treesize of output 353 [2022-11-03 02:50:42,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:42,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:42,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:42,898 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 4 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 95 treesize of output 598 [2022-11-03 02:50:42,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:43,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:43,045 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:43,046 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 4 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 357 treesize of output 331 [2022-11-03 02:50:43,105 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-11-03 02:50:43,130 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-11-03 02:50:43,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:43,311 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:43,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:43,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:43,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:43,326 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:50:43,328 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 3 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 267 treesize of output 410 [2022-11-03 02:50:43,352 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:43,356 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 6 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 523 treesize of output 3847 [2022-11-03 02:50:43,463 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:43,480 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 7 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 10 new quantified variables, introduced 0 case distinctions, treesize of input 2565 treesize of output 17587 [2022-11-03 02:50:43,560 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 16 [2022-11-03 02:50:43,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:43,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:43,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:43,589 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 4 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 139 treesize of output 238 [2022-11-03 02:50:43,612 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-11-03 02:50:43,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:43,631 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:43,633 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:43,634 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 3 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 70 treesize of output 64 [2022-11-03 02:50:43,646 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 19 [2022-11-03 02:50:43,675 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 19 [2022-11-03 02:50:43,709 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 34 [2022-11-03 02:50:43,741 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 32 [2022-11-03 02:50:43,754 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 19 [2022-11-03 02:50:43,787 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 19 [2022-11-03 02:50:43,797 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 19 [2022-11-03 02:50:43,815 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 22 [2022-11-03 02:50:43,847 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:43,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:43,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:43,852 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:43,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:43,855 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:50:43,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:43,858 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:50:43,859 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 3 stores, 3 select indices, 3 select index equivalence classes, 9 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 239 treesize of output 428 [2022-11-03 02:50:43,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:43,898 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:50:43,901 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 5 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 559 treesize of output 1394 [2022-11-03 02:50:43,920 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 3 [2022-11-03 02:50:44,044 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 02:50:45,120 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '120#(and (= |ULTIMATE.start_main_~i~0#1| 0) (= (select (select |#memory_int| |ULTIMATE.start_main_~#volArray~0#1.base|) (+ |ULTIMATE.start_main_~#volArray~0#1.offset| (* |ULTIMATE.start_main_~i~0#1| 4))) |ULTIMATE.start_main_#t~mem7#1|) (<= 7 |ULTIMATE.start_main_~CCCELVOL3~0#1|) (<= 0 |ULTIMATE.start_main_~#volArray~0#1.offset|) (<= |#NULL.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (= (ite |ULTIMATE.start_main_#t~short9#1| 1 0) |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (not (= |ULTIMATE.start_main_#t~mem8#1| 0)) (<= ~CELLCOUNT~0 2147483647) (<= 1 ~CELLCOUNT~0) (<= 0 |ULTIMATE.start_assume_abort_if_not_#in~cond#1|) (<= 0 |ULTIMATE.start_assume_abort_if_not_~cond#1|) (= |ULTIMATE.start_main_~CCCELVOL2~0#1| 3) (<= |ULTIMATE.start_main_~CCCELVOL1~0#1| 1) (<= |ULTIMATE.start_main_~#volArray~0#1.offset| 0) (<= |ULTIMATE.start_main_~CCCELVOL3~0#1| 7) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= (select (select |#memory_int| |ULTIMATE.start_main_~#volArray~0#1.base|) (+ |ULTIMATE.start_main_~#volArray~0#1.offset| (* |ULTIMATE.start_main_~i~0#1| 4))) |ULTIMATE.start_main_#t~mem8#1|) (<= 0 |ULTIMATE.start_main_~#volArray~0#1.base|) (<= 0 |#NULL.offset|) (<= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (<= 0 |#StackHeapBarrier|) (<= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (<= 1 |ULTIMATE.start_main_~CCCELVOL1~0#1|) (not (<= |ULTIMATE.start_main_~MINVAL~0#1| |ULTIMATE.start_main_#t~mem7#1|)) (= |#NULL.base| 0))' at error location [2022-11-03 02:50:45,121 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 02:50:45,121 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 02:50:45,121 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 15 [2022-11-03 02:50:45,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154154439] [2022-11-03 02:50:45,122 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 02:50:45,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-03 02:50:45,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:50:45,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-03 02:50:45,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=348, Unknown=0, NotChecked=0, Total=420 [2022-11-03 02:50:45,124 INFO L87 Difference]: Start difference. First operand 10 states and 11 transitions. Second operand has 15 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) [2022-11-03 02:50:45,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:50:45,569 INFO L93 Difference]: Finished difference Result 21 states and 23 transitions. [2022-11-03 02:50:45,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-03 02:50:45,569 INFO L78 Accepts]: Start accepts. Automaton has has 15 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) Word has length 8 [2022-11-03 02:50:45,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:50:45,570 INFO L225 Difference]: With dead ends: 21 [2022-11-03 02:50:45,570 INFO L226 Difference]: Without dead ends: 19 [2022-11-03 02:50:45,571 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 173 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=166, Invalid=646, Unknown=0, NotChecked=0, Total=812 [2022-11-03 02:50:45,572 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 30 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:50:45,572 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 14 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:50:45,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2022-11-03 02:50:45,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 12. [2022-11-03 02:50:45,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 11 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:50:45,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 13 transitions. [2022-11-03 02:50:45,576 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 13 transitions. Word has length 8 [2022-11-03 02:50:45,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:50:45,577 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 13 transitions. [2022-11-03 02:50:45,577 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 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) [2022-11-03 02:50:45,577 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 13 transitions. [2022-11-03 02:50:45,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-03 02:50:45,577 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:50:45,578 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:50:45,608 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caff0959-c3a4-4e30-a77a-468d741d96ab/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-03 02:50:45,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caff0959-c3a4-4e30-a77a-468d741d96ab/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:50:45,778 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:50:45,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:50:45,779 INFO L85 PathProgramCache]: Analyzing trace with hash 1911093830, now seen corresponding path program 1 times [2022-11-03 02:50:45,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:50:45,779 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583755812] [2022-11-03 02:50:45,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:50:45,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:50:45,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:50:46,382 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:50:46,383 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:50:46,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [583755812] [2022-11-03 02:50:46,383 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [583755812] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:50:46,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1199617209] [2022-11-03 02:50:46,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:50:46,383 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:50:46,383 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caff0959-c3a4-4e30-a77a-468d741d96ab/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:50:46,386 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caff0959-c3a4-4e30-a77a-468d741d96ab/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:50:46,418 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caff0959-c3a4-4e30-a77a-468d741d96ab/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-03 02:50:46,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:50:46,472 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-03 02:50:46,475 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:50:46,578 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:46,579 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 43 [2022-11-03 02:50:46,699 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 100 treesize of output 98 [2022-11-03 02:50:46,704 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 3 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 81 treesize of output 91 [2022-11-03 02:50:46,711 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 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 67 treesize of output 89 [2022-11-03 02:50:46,720 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 18 treesize of output 22 [2022-11-03 02:50:46,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:46,746 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 36 [2022-11-03 02:50:46,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:46,786 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 36 [2022-11-03 02:50:46,817 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 31 treesize of output 16 [2022-11-03 02:50:46,829 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 18 treesize of output 7 [2022-11-03 02:50:46,834 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-03 02:50:46,846 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-03 02:50:47,056 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 65 treesize of output 45 [2022-11-03 02:50:47,104 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:50:47,104 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:50:47,261 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:50:47,262 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 44 treesize of output 54 [2022-11-03 02:50:47,363 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 181 treesize of output 160 [2022-11-03 02:50:47,366 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:50:47,378 INFO L356 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2022-11-03 02:50:47,378 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 120 treesize of output 98 [2022-11-03 02:50:47,398 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 13 treesize of output 4 [2022-11-03 02:50:47,421 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:50:47,421 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1199617209] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:50:47,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [221849690] [2022-11-03 02:50:47,423 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-11-03 02:50:47,423 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 02:50:47,424 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 02:50:47,424 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 02:50:47,424 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 02:50:47,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:47,481 INFO L356 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-11-03 02:50:47,482 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 32 treesize of output 49 [2022-11-03 02:50:47,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:47,496 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 32 [2022-11-03 02:50:47,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:47,547 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 8 select indices, 8 select index equivalence classes, 20 disjoint index pairs (out of 28 index pairs), introduced 10 new quantified variables, introduced 0 case distinctions, treesize of input 89 treesize of output 175 [2022-11-03 02:50:47,723 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:47,726 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:47,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:47,742 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 8 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 11 new quantified variables, introduced 0 case distinctions, treesize of input 421 treesize of output 679 [2022-11-03 02:50:47,787 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:47,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:47,828 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 275 treesize of output 283 [2022-11-03 02:50:47,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:47,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:47,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:47,908 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 277 treesize of output 285 [2022-11-03 02:50:47,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:47,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:47,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:47,988 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 279 treesize of output 287 [2022-11-03 02:50:48,036 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 265 treesize of output 263 [2022-11-03 02:50:48,075 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:48,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:48,105 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 279 treesize of output 287 [2022-11-03 02:50:48,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:48,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:48,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:48,155 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:48,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:48,198 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 4 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 410 [2022-11-03 02:50:50,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:50,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:50,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:50,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:50,119 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 15 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 16 new quantified variables, introduced 0 case distinctions, treesize of input 1954 treesize of output 2845 [2022-11-03 02:50:50,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:50,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:50,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:50,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:50,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:50,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:50,270 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 6 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 2046 treesize of output 3157 [2022-11-03 02:50:50,945 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-11-03 02:50:51,088 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-11-03 02:50:51,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:51,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:51,224 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:51,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:51,338 INFO L244 Elim1Store]: Index analysis took 137 ms [2022-11-03 02:50:51,343 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:51,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:51,352 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:51,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:51,386 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 5 stores, 3 select indices, 3 select index equivalence classes, 10 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 453 treesize of output 1853 [2022-11-03 02:50:51,458 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1438 treesize of output 1022 [2022-11-03 02:50:51,519 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1458 treesize of output 1074 [2022-11-03 02:50:52,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:52,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:52,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:52,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:52,184 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:52,188 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:52,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:52,203 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:52,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:52,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:52,213 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:52,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:52,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:52,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:52,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:52,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:52,249 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:52,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:52,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:52,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:52,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:52,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:52,359 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:52,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:52,380 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 7 stores, 3 select indices, 3 select index equivalence classes, 26 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 351 treesize of output 324 [2022-11-03 02:50:52,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:52,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:52,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:52,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:52,409 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:52,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:52,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:52,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:52,417 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:52,420 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:52,421 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 3 stores, 3 select indices, 3 select index equivalence classes, 11 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 167 treesize of output 316 [2022-11-03 02:50:52,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:52,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:52,529 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:52,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:52,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:52,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:52,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:52,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:52,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:52,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:52,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:52,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:52,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:52,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:52,568 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:52,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:52,580 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:52,616 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:52,621 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 6 stores, 3 select indices, 3 select index equivalence classes, 20 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 317 treesize of output 279 [2022-11-03 02:50:52,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:52,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:52,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:52,643 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:52,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:52,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:52,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:52,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:52,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:52,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:52,653 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 3 stores, 3 select indices, 3 select index equivalence classes, 11 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 157 treesize of output 310 [2022-11-03 02:50:53,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:53,312 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:53,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:53,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:53,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:53,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:53,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:53,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:53,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:53,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:53,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:53,422 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:53,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:53,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:53,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:53,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:53,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:53,472 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 13 stores, 3 select indices, 3 select index equivalence classes, 19 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 1661 treesize of output 1469 [2022-11-03 02:50:53,608 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:50:53,609 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:50:53,619 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-11-03 02:50:54,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:54,763 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 49 [2022-11-03 02:50:54,807 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 5 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 283 treesize of output 353 [2022-11-03 02:50:54,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:54,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:54,835 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:54,980 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 4 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 95 treesize of output 598 [2022-11-03 02:50:55,255 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-11-03 02:50:55,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:55,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:55,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:55,310 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 4 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 425 treesize of output 1300 [2022-11-03 02:50:55,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:55,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:55,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:55,435 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 4 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 403 treesize of output 981 [2022-11-03 02:50:55,482 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 5 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 3899 treesize of output 3791 [2022-11-03 02:50:55,718 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:55,723 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 5 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 991 treesize of output 4288 [2022-11-03 02:50:55,760 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 16 [2022-11-03 02:50:55,858 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 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 17 treesize of output 8 [2022-11-03 02:50:55,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:55,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:55,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:55,899 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 4 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 43 [2022-11-03 02:50:55,954 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:55,965 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 3 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 25 treesize of output 25 [2022-11-03 02:50:56,012 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:56,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:56,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:56,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:56,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:56,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:56,023 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 4 stores, 3 select indices, 3 select index equivalence classes, 9 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 382 treesize of output 850 [2022-11-03 02:50:56,097 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:56,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:56,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:56,101 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 4 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 139 treesize of output 238 [2022-11-03 02:50:56,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:56,158 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:56,159 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:56,160 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 3 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 123 treesize of output 102 [2022-11-03 02:50:56,172 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 86 treesize of output 44 [2022-11-03 02:50:56,184 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 34 [2022-11-03 02:50:56,201 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-11-03 02:50:56,231 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-11-03 02:50:56,252 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-11-03 02:50:56,269 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 22 [2022-11-03 02:50:56,305 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 3 [2022-11-03 02:50:56,348 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 3 [2022-11-03 02:50:56,377 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 3 [2022-11-03 02:50:56,623 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 02:50:57,373 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '263#(and (= |ULTIMATE.start_main_~CCCELVOL3~0#1| 7) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= ~CELLCOUNT~0 2147483647) (= |ULTIMATE.start_main_~CCCELVOL1~0#1| 1) (<= 1 ~CELLCOUNT~0) (= |ULTIMATE.start_main_~#volArray~0#1.offset| 0) (<= 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_~CCCELVOL2~0#1| 3) (<= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| 1) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (<= 0 |ULTIMATE.start_main_~#volArray~0#1.base|) (<= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (<= 0 |#StackHeapBarrier|) (<= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |#NULL.base| 0))' at error location [2022-11-03 02:50:57,373 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 02:50:57,373 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 02:50:57,373 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 18 [2022-11-03 02:50:57,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932238638] [2022-11-03 02:50:57,374 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 02:50:57,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-03 02:50:57,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:50:57,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-03 02:50:57,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=508, Unknown=0, NotChecked=0, Total=600 [2022-11-03 02:50:57,376 INFO L87 Difference]: Start difference. First operand 12 states and 13 transitions. Second operand has 18 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 18 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:50:58,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:50:58,108 INFO L93 Difference]: Finished difference Result 20 states and 22 transitions. [2022-11-03 02:50:58,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-03 02:50:58,109 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 18 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-03 02:50:58,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:50:58,109 INFO L225 Difference]: With dead ends: 20 [2022-11-03 02:50:58,110 INFO L226 Difference]: Without dead ends: 18 [2022-11-03 02:50:58,110 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=190, Invalid=866, Unknown=0, NotChecked=0, Total=1056 [2022-11-03 02:50:58,111 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 31 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:50:58,111 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 27 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 02:50:58,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2022-11-03 02:50:58,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 15. [2022-11-03 02:50:58,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.1428571428571428) internal successors, (16), 14 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) [2022-11-03 02:50:58,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2022-11-03 02:50:58,116 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 11 [2022-11-03 02:50:58,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:50:58,117 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2022-11-03 02:50:58,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 18 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:50:58,117 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2022-11-03 02:50:58,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-03 02:50:58,118 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:50:58,118 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:50:58,158 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caff0959-c3a4-4e30-a77a-468d741d96ab/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-03 02:50:58,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caff0959-c3a4-4e30-a77a-468d741d96ab/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:50:58,343 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:50:58,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:50:58,343 INFO L85 PathProgramCache]: Analyzing trace with hash -684906320, now seen corresponding path program 2 times [2022-11-03 02:50:58,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:50:58,344 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128574528] [2022-11-03 02:50:58,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:50:58,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:50:58,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:50:58,832 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:50:58,832 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:50:58,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128574528] [2022-11-03 02:50:58,832 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2128574528] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:50:58,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [145297545] [2022-11-03 02:50:58,833 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-03 02:50:58,833 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:50:58,833 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caff0959-c3a4-4e30-a77a-468d741d96ab/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:50:58,835 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caff0959-c3a4-4e30-a77a-468d741d96ab/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:50:58,862 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caff0959-c3a4-4e30-a77a-468d741d96ab/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-03 02:50:58,930 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-03 02:50:58,930 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 02:50:58,932 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-03 02:50:58,934 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:50:58,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:58,949 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 43 [2022-11-03 02:50:58,956 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-03 02:50:58,979 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 18 treesize of output 7 [2022-11-03 02:50:58,983 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-03 02:50:59,229 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 70 treesize of output 46 [2022-11-03 02:50:59,263 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:50:59,264 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:50:59,451 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:50:59,452 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 44 treesize of output 54 [2022-11-03 02:50:59,488 INFO L356 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2022-11-03 02:50:59,489 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 41 treesize of output 35 [2022-11-03 02:50:59,496 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 13 treesize of output 4 [2022-11-03 02:50:59,517 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:50:59,518 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [145297545] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:50:59,518 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1492361838] [2022-11-03 02:50:59,522 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-11-03 02:50:59,523 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 02:50:59,524 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 02:50:59,524 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 02:50:59,524 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 02:50:59,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:59,583 INFO L356 Elim1Store]: treesize reduction 24, result has 44.2 percent of original size [2022-11-03 02:50:59,584 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 24 treesize of output 40 [2022-11-03 02:50:59,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:59,627 INFO L356 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-11-03 02:50:59,628 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 32 treesize of output 49 [2022-11-03 02:50:59,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:59,682 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 8 select indices, 8 select index equivalence classes, 20 disjoint index pairs (out of 28 index pairs), introduced 10 new quantified variables, introduced 0 case distinctions, treesize of input 89 treesize of output 175 [2022-11-03 02:50:59,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:59,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:59,762 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 5 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 327 treesize of output 425 [2022-11-03 02:50:59,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:59,799 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:50:59,854 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 4 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 410 [2022-11-03 02:51:00,632 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:00,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:00,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:00,683 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 11 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 14 new quantified variables, introduced 0 case distinctions, treesize of input 2334 treesize of output 2789 [2022-11-03 02:51:00,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:00,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:00,816 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 3 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 2383 treesize of output 2564 [2022-11-03 02:51:00,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:00,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:00,921 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 3 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 2251 treesize of output 2436 [2022-11-03 02:51:01,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:01,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:01,145 INFO L244 Elim1Store]: Index analysis took 112 ms [2022-11-03 02:51:01,148 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 3 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 2127 treesize of output 2304 [2022-11-03 02:51:01,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:01,312 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:01,316 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 3 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 1987 treesize of output 2176 [2022-11-03 02:51:01,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:01,578 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:01,779 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 4 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 410 [2022-11-03 02:51:02,240 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:02,253 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:02,581 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:51:02,581 INFO L244 Elim1Store]: Index analysis took 368 ms [2022-11-03 02:51:02,720 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 184 treesize of output 176 [2022-11-03 02:51:02,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:02,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:03,167 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:51:03,167 INFO L244 Elim1Store]: Index analysis took 283 ms [2022-11-03 02:51:03,343 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 184 treesize of output 176 [2022-11-03 02:51:03,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:03,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:04,830 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:04,830 INFO L244 Elim1Store]: Index analysis took 1265 ms [2022-11-03 02:51:05,524 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 184 treesize of output 176 [2022-11-03 02:51:05,681 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-11-03 02:51:06,112 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 23 treesize of output 15 [2022-11-03 02:51:06,222 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 23 treesize of output 15 [2022-11-03 02:51:06,762 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 23 treesize of output 15 [2022-11-03 02:51:07,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:07,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:10,446 INFO L244 Elim1Store]: Index analysis took 3142 ms [2022-11-03 02:51:12,093 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 184 treesize of output 176 [2022-11-03 02:51:12,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:12,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:12,557 INFO L244 Elim1Store]: Index analysis took 344 ms [2022-11-03 02:51:12,780 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 184 treesize of output 176 [2022-11-03 02:51:13,239 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 23 treesize of output 15 [2022-11-03 02:51:13,860 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 23 treesize of output 15 [2022-11-03 02:51:14,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:14,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:14,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:14,780 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 4 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 280 treesize of output 1412 [2022-11-03 02:51:14,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:14,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:14,911 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 3 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 640 treesize of output 1888 [2022-11-03 02:51:15,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:15,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:15,026 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 16 [2022-11-03 02:51:15,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:15,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:15,493 INFO L244 Elim1Store]: Index analysis took 233 ms [2022-11-03 02:51:15,495 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 198 treesize of output 225 [2022-11-03 02:51:16,054 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 15 treesize of output 7 [2022-11-03 02:51:16,551 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 41 treesize of output 25 [2022-11-03 02:51:16,768 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 41 treesize of output 25 [2022-11-03 02:51:16,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:16,964 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:16,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:17,029 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 256 treesize of output 243 [2022-11-03 02:51:17,126 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:17,132 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:17,133 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:51:17,146 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 256 treesize of output 243 [2022-11-03 02:51:17,235 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:17,241 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:17,242 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:51:17,251 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 256 treesize of output 243 [2022-11-03 02:51:17,313 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 41 treesize of output 25 [2022-11-03 02:51:17,445 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 41 treesize of output 25 [2022-11-03 02:51:17,543 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 41 treesize of output 25 [2022-11-03 02:51:18,836 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:18,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:18,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:18,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:18,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:18,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:18,903 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 14 stores, 2 select indices, 2 select index equivalence classes, 8 disjoint index pairs (out of 1 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 1777 treesize of output 2491 [2022-11-03 02:51:21,177 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:21,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:21,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:21,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:21,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:21,345 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:21,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:21,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:21,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:21,954 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:22,096 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:22,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:22,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:22,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:22,188 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:22,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:22,258 INFO L244 Elim1Store]: Index analysis took 1089 ms [2022-11-03 02:51:22,272 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:22,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:22,303 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:22,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:22,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:22,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:22,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:22,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:22,578 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:22,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:22,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:22,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:22,750 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 10 stores, 2 select indices, 2 select index equivalence classes, 32 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 101 treesize of output 399 [2022-11-03 02:51:22,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:23,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:23,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:23,045 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:23,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:23,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:23,132 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:23,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:23,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:23,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:23,810 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:23,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:23,832 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:23,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:23,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:23,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:23,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:23,963 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:23,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:24,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:24,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:24,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:24,122 INFO L244 Elim1Store]: Index analysis took 1201 ms [2022-11-03 02:51:24,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:24,159 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:24,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:24,189 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:24,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:24,212 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:24,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:24,239 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:24,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:24,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:24,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:24,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:24,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:24,574 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:24,627 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 10 stores, 2 select indices, 2 select index equivalence classes, 40 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 101 treesize of output 401 [2022-11-03 02:51:29,844 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:51:29,845 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:51:29,867 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-11-03 02:51:29,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:29,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:29,966 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 284 treesize of output 255 [2022-11-03 02:51:29,982 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 37 treesize of output 21 [2022-11-03 02:51:31,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:31,020 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 49 [2022-11-03 02:51:31,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:31,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:31,065 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:31,066 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 4 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 265 treesize of output 692 [2022-11-03 02:51:31,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:31,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:31,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:31,282 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 5 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 360 treesize of output 2119 [2022-11-03 02:51:31,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:31,328 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 4 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 828 treesize of output 3403 [2022-11-03 02:51:31,354 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 16 [2022-11-03 02:51:31,382 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-11-03 02:51:31,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:31,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:31,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:31,407 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 4 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 404 treesize of output 1279 [2022-11-03 02:51:31,440 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 6 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 1630 treesize of output 1752 [2022-11-03 02:51:31,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:31,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:31,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:31,509 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 4 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 95 treesize of output 598 [2022-11-03 02:51:31,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:31,692 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:31,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:31,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:31,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:31,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:31,762 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 5 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 302 treesize of output 305 [2022-11-03 02:51:31,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:31,836 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:31,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:31,854 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 5 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 311 treesize of output 331 [2022-11-03 02:51:31,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:31,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:31,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:31,916 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 5 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 302 treesize of output 306 [2022-11-03 02:51:32,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:32,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:32,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:32,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:32,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:32,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:32,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:32,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:32,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:32,286 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 4 stores, 3 select indices, 3 select index equivalence classes, 12 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 354 treesize of output 942 [2022-11-03 02:51:32,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:32,327 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 4 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 540 treesize of output 2143 [2022-11-03 02:51:32,353 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 16 [2022-11-03 02:51:32,418 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-11-03 02:51:32,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:32,455 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 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 18 treesize of output 1 [2022-11-03 02:51:32,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:32,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:32,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:32,511 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:32,512 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:32,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:32,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:32,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:32,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:32,519 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 4 stores, 3 select indices, 3 select index equivalence classes, 12 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 374 treesize of output 1219 [2022-11-03 02:51:32,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:32,571 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:32,572 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:32,582 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 3 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 339 treesize of output 486 [2022-11-03 02:51:32,812 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 02:51:33,538 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '430#(and (= |ULTIMATE.start_main_~CCCELVOL3~0#1| 7) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= ~CELLCOUNT~0 2147483647) (= |ULTIMATE.start_main_~CCCELVOL1~0#1| 1) (<= 1 ~CELLCOUNT~0) (= |ULTIMATE.start_main_~#volArray~0#1.offset| 0) (<= 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_~CCCELVOL2~0#1| 3) (<= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| 1) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (<= 0 |ULTIMATE.start_main_~#volArray~0#1.base|) (<= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (<= 0 |#StackHeapBarrier|) (<= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |#NULL.base| 0))' at error location [2022-11-03 02:51:33,538 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 02:51:33,538 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 02:51:33,538 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 19 [2022-11-03 02:51:33,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014565691] [2022-11-03 02:51:33,539 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 02:51:33,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-03 02:51:33,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:51:33,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-03 02:51:33,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=566, Unknown=0, NotChecked=0, Total=650 [2022-11-03 02:51:33,540 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand has 19 states, 19 states have (on average 1.8421052631578947) internal successors, (35), 19 states have internal predecessors, (35), 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) [2022-11-03 02:51:34,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:51:34,748 INFO L93 Difference]: Finished difference Result 26 states and 31 transitions. [2022-11-03 02:51:34,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-03 02:51:34,749 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.8421052631578947) internal successors, (35), 19 states have internal predecessors, (35), 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 [2022-11-03 02:51:34,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:51:34,751 INFO L225 Difference]: With dead ends: 26 [2022-11-03 02:51:34,751 INFO L226 Difference]: Without dead ends: 24 [2022-11-03 02:51:34,752 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 266 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=230, Invalid=1252, Unknown=0, NotChecked=0, Total=1482 [2022-11-03 02:51:34,752 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 41 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:51:34,753 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 29 Invalid, 212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-03 02:51:34,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2022-11-03 02:51:34,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 18. [2022-11-03 02:51:34,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 17 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:51:34,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2022-11-03 02:51:34,759 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 14 [2022-11-03 02:51:34,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:51:34,759 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2022-11-03 02:51:34,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.8421052631578947) internal successors, (35), 19 states have internal predecessors, (35), 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) [2022-11-03 02:51:34,760 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2022-11-03 02:51:34,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-03 02:51:34,760 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:51:34,761 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:51:34,782 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caff0959-c3a4-4e30-a77a-468d741d96ab/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-03 02:51:34,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caff0959-c3a4-4e30-a77a-468d741d96ab/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:51:34,963 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:51:34,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:51:34,963 INFO L85 PathProgramCache]: Analyzing trace with hash 1350724102, now seen corresponding path program 3 times [2022-11-03 02:51:34,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:51:34,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113357308] [2022-11-03 02:51:34,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:51:34,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:51:34,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:51:35,235 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:51:35,236 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:51:35,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113357308] [2022-11-03 02:51:35,236 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [113357308] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:51:35,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1039290374] [2022-11-03 02:51:35,236 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-03 02:51:35,236 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:51:35,237 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caff0959-c3a4-4e30-a77a-468d741d96ab/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:51:35,238 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caff0959-c3a4-4e30-a77a-468d741d96ab/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:51:35,247 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caff0959-c3a4-4e30-a77a-468d741d96ab/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-03 02:51:35,330 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-03 02:51:35,330 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 02:51:35,332 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-03 02:51:35,334 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:51:35,579 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:51:35,579 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:51:35,727 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:51:35,727 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1039290374] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:51:35,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1754022352] [2022-11-03 02:51:35,729 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-11-03 02:51:35,729 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 02:51:35,732 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 02:51:35,732 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 02:51:35,732 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 02:51:35,753 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:35,786 INFO L356 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-11-03 02:51:35,786 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 32 treesize of output 49 [2022-11-03 02:51:35,798 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:35,799 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 32 [2022-11-03 02:51:35,855 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:35,856 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 8 select indices, 8 select index equivalence classes, 20 disjoint index pairs (out of 28 index pairs), introduced 10 new quantified variables, introduced 0 case distinctions, treesize of input 89 treesize of output 175 [2022-11-03 02:51:35,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:35,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:36,003 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:36,005 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 8 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 11 new quantified variables, introduced 0 case distinctions, treesize of input 442 treesize of output 694 [2022-11-03 02:51:36,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:36,055 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:36,092 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 310 treesize of output 318 [2022-11-03 02:51:36,141 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:36,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:36,197 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 312 treesize of output 320 [2022-11-03 02:51:36,239 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:36,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:36,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:36,300 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 314 treesize of output 322 [2022-11-03 02:51:36,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:36,354 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:36,358 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:36,397 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 316 treesize of output 324 [2022-11-03 02:51:36,454 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 302 treesize of output 300 [2022-11-03 02:51:36,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:36,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:36,494 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:36,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:36,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:36,537 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 4 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 410 [2022-11-03 02:51:37,377 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-11-03 02:51:37,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:37,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:37,421 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:37,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:37,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:37,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:37,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:37,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:37,447 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:37,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:37,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:37,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:37,461 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:37,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:37,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:37,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:37,586 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 8 stores, 3 select indices, 3 select index equivalence classes, 18 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 309 treesize of output 481 [2022-11-03 02:51:37,612 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 15 treesize of output 7 [2022-11-03 02:51:37,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:37,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:37,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:37,968 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:37,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:37,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:37,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:37,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:37,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:37,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:37,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:37,981 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 14 stores, 3 select indices, 3 select index equivalence classes, 13 disjoint index pairs (out of 3 index pairs), introduced 14 new quantified variables, introduced 0 case distinctions, treesize of input 1587 treesize of output 2394 [2022-11-03 02:51:39,039 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-11-03 02:51:39,295 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 15 treesize of output 7 [2022-11-03 02:51:44,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:44,722 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 49 [2022-11-03 02:51:44,754 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 5 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 283 treesize of output 353 [2022-11-03 02:51:44,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:44,781 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:44,783 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:44,937 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 4 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 95 treesize of output 598 [2022-11-03 02:51:44,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:44,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:44,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:44,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:44,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:44,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:45,000 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 4 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 303 treesize of output 299 [2022-11-03 02:51:45,049 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-11-03 02:51:45,067 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-11-03 02:51:45,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:45,235 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:45,238 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:45,239 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:51:45,241 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 4 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 362 treesize of output 864 [2022-11-03 02:51:45,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:45,273 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 3 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 345 treesize of output 1081 [2022-11-03 02:51:45,297 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 16 [2022-11-03 02:51:45,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:45,317 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:45,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:45,323 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 4 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 139 treesize of output 238 [2022-11-03 02:51:45,361 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 10 [2022-11-03 02:51:45,383 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 10 [2022-11-03 02:51:45,434 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 4 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 197 treesize of output 237 [2022-11-03 02:51:45,448 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 10 [2022-11-03 02:51:45,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:45,473 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 3 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 32 treesize of output 30 [2022-11-03 02:51:45,508 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 10 [2022-11-03 02:51:45,535 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-11-03 02:51:45,558 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 10 [2022-11-03 02:51:45,567 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 10 [2022-11-03 02:51:45,585 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 10 [2022-11-03 02:51:45,601 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 10 [2022-11-03 02:51:45,620 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 3 [2022-11-03 02:51:45,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:45,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:45,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:45,644 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 4 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 360 treesize of output 977 [2022-11-03 02:51:45,847 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 02:51:46,549 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '642#(and (= |ULTIMATE.start_main_~CCCELVOL3~0#1| 7) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= ~CELLCOUNT~0 2147483647) (= |ULTIMATE.start_main_~CCCELVOL1~0#1| 1) (<= 1 ~CELLCOUNT~0) (= |ULTIMATE.start_main_~#volArray~0#1.offset| 0) (<= 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_~CCCELVOL2~0#1| 3) (<= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| 1) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (<= 0 |ULTIMATE.start_main_~#volArray~0#1.base|) (<= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (<= 0 |#StackHeapBarrier|) (<= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |#NULL.base| 0))' at error location [2022-11-03 02:51:46,550 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 02:51:46,550 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 02:51:46,550 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 22 [2022-11-03 02:51:46,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681218134] [2022-11-03 02:51:46,550 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 02:51:46,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-03 02:51:46,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:51:46,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-03 02:51:46,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=667, Unknown=0, NotChecked=0, Total=812 [2022-11-03 02:51:46,552 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand has 22 states, 22 states have (on average 2.0454545454545454) internal successors, (45), 22 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) [2022-11-03 02:51:46,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:51:46,818 INFO L93 Difference]: Finished difference Result 34 states and 36 transitions. [2022-11-03 02:51:46,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-03 02:51:46,823 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.0454545454545454) internal successors, (45), 22 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-11-03 02:51:46,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:51:46,824 INFO L225 Difference]: With dead ends: 34 [2022-11-03 02:51:46,824 INFO L226 Difference]: Without dead ends: 19 [2022-11-03 02:51:46,825 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 344 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=230, Invalid=960, Unknown=0, NotChecked=0, Total=1190 [2022-11-03 02:51:46,825 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 40 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:51:46,826 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 37 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:51:46,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2022-11-03 02:51:46,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2022-11-03 02:51:46,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 18 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) [2022-11-03 02:51:46,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2022-11-03 02:51:46,840 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 17 [2022-11-03 02:51:46,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:51:46,841 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2022-11-03 02:51:46,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 2.0454545454545454) internal successors, (45), 22 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) [2022-11-03 02:51:46,841 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2022-11-03 02:51:46,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-03 02:51:46,841 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:51:46,842 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 2, 1, 1, 1, 1, 1, 1] [2022-11-03 02:51:46,863 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caff0959-c3a4-4e30-a77a-468d741d96ab/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-03 02:51:47,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caff0959-c3a4-4e30-a77a-468d741d96ab/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:51:47,042 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:51:47,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:51:47,043 INFO L85 PathProgramCache]: Analyzing trace with hash 480899298, now seen corresponding path program 4 times [2022-11-03 02:51:47,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:51:47,043 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213389595] [2022-11-03 02:51:47,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:51:47,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:51:47,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:51:47,954 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:51:47,955 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:51:47,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213389595] [2022-11-03 02:51:47,955 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1213389595] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:51:47,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [502388622] [2022-11-03 02:51:47,955 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-03 02:51:47,955 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:51:47,955 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caff0959-c3a4-4e30-a77a-468d741d96ab/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:51:47,959 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caff0959-c3a4-4e30-a77a-468d741d96ab/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:51:47,974 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caff0959-c3a4-4e30-a77a-468d741d96ab/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-03 02:51:48,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:51:48,048 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 34 conjunts are in the unsatisfiable core [2022-11-03 02:51:48,052 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:51:48,159 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:48,160 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 43 [2022-11-03 02:51:48,275 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 120 treesize of output 118 [2022-11-03 02:51:48,284 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 31 [2022-11-03 02:51:48,329 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-03 02:51:48,358 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 4 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 111 treesize of output 159 [2022-11-03 02:51:48,372 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 3 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 53 treesize of output 238 [2022-11-03 02:51:48,580 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 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 134 treesize of output 160 [2022-11-03 02:51:48,592 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 75 [2022-11-03 02:51:48,608 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 120 treesize of output 19 [2022-11-03 02:51:48,614 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 60 treesize of output 41 [2022-11-03 02:51:48,627 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 58 treesize of output 39 [2022-11-03 02:51:48,633 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-03 02:51:48,914 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 75 treesize of output 45 [2022-11-03 02:51:48,948 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:51:48,948 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:51:49,182 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:51:49,183 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 44 treesize of output 54 [2022-11-03 02:51:49,436 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 615 treesize of output 588 [2022-11-03 02:51:49,442 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:51:49,443 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:51:49,458 INFO L356 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2022-11-03 02:51:49,458 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 460 treesize of output 426 [2022-11-03 02:51:49,505 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 13 treesize of output 4 [2022-11-03 02:51:49,553 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:51:49,554 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [502388622] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:51:49,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1854500243] [2022-11-03 02:51:49,555 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-11-03 02:51:49,556 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 02:51:49,556 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 02:51:49,556 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 02:51:49,556 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 02:51:49,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:49,609 INFO L356 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-11-03 02:51:49,609 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 32 treesize of output 49 [2022-11-03 02:51:49,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:49,627 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 32 [2022-11-03 02:51:49,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:49,677 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 8 select indices, 8 select index equivalence classes, 20 disjoint index pairs (out of 28 index pairs), introduced 10 new quantified variables, introduced 0 case distinctions, treesize of input 89 treesize of output 175 [2022-11-03 02:51:49,822 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:49,825 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:49,836 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:49,838 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 8 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 11 new quantified variables, introduced 0 case distinctions, treesize of input 491 treesize of output 729 [2022-11-03 02:51:49,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:49,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:49,905 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 345 treesize of output 353 [2022-11-03 02:51:49,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:49,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:49,996 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 347 treesize of output 355 [2022-11-03 02:51:50,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:50,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:50,047 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:50,086 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 349 treesize of output 357 [2022-11-03 02:51:50,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:50,131 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:50,133 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:50,162 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 351 treesize of output 359 [2022-11-03 02:51:50,195 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 337 treesize of output 335 [2022-11-03 02:51:50,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:50,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:50,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:50,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:50,233 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:50,265 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 4 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 410 [2022-11-03 02:51:50,723 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:50,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:50,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:50,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:50,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:50,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:50,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:50,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:50,775 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:50,787 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:50,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:50,799 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:50,804 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:50,809 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:50,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:50,829 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:50,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:50,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:50,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:50,843 INFO L244 Elim1Store]: Index analysis took 123 ms [2022-11-03 02:51:50,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:50,869 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:50,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:50,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:50,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:50,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:50,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:50,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:50,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:50,964 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:50,965 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 7 stores, 3 select indices, 3 select index equivalence classes, 33 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 231 treesize of output 354 [2022-11-03 02:51:51,037 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-11-03 02:51:51,089 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-11-03 02:51:56,631 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 02:51:57,088 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '862#(and (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 ~CELLCOUNT~0) (<= 0 |ULTIMATE.start_main_~i~0#1|) (<= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| 1) (<= 0 |ULTIMATE.start___VERIFIER_assert_#in~cond#1|))' at error location [2022-11-03 02:51:57,088 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 02:51:57,089 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 02:51:57,089 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 10] total 27 [2022-11-03 02:51:57,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677742485] [2022-11-03 02:51:57,089 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 02:51:57,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-11-03 02:51:57,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:51:57,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-11-03 02:51:57,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=939, Unknown=0, NotChecked=0, Total=1056 [2022-11-03 02:51:57,092 INFO L87 Difference]: Start difference. First operand 19 states and 20 transitions. Second operand has 27 states, 27 states have (on average 1.8148148148148149) internal successors, (49), 27 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) [2022-11-03 02:51:59,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:51:59,196 INFO L93 Difference]: Finished difference Result 31 states and 37 transitions. [2022-11-03 02:51:59,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-03 02:51:59,196 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8148148148148149) internal successors, (49), 27 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) Word has length 18 [2022-11-03 02:51:59,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:51:59,197 INFO L225 Difference]: With dead ends: 31 [2022-11-03 02:51:59,197 INFO L226 Difference]: Without dead ends: 29 [2022-11-03 02:51:59,198 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 578 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=336, Invalid=2114, Unknown=0, NotChecked=0, Total=2450 [2022-11-03 02:51:59,199 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 38 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 340 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-03 02:51:59,199 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 60 Invalid, 340 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-03 02:51:59,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-11-03 02:51:59,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 22. [2022-11-03 02:51:59,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.0952380952380953) internal successors, (23), 21 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) [2022-11-03 02:51:59,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2022-11-03 02:51:59,208 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 18 [2022-11-03 02:51:59,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:51:59,208 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2022-11-03 02:51:59,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8148148148148149) internal successors, (49), 27 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) [2022-11-03 02:51:59,209 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2022-11-03 02:51:59,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-03 02:51:59,209 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:51:59,209 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 2, 1, 1, 1, 1, 1, 1] [2022-11-03 02:51:59,235 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caff0959-c3a4-4e30-a77a-468d741d96ab/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-03 02:51:59,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caff0959-c3a4-4e30-a77a-468d741d96ab/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:51:59,419 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:51:59,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:51:59,420 INFO L85 PathProgramCache]: Analyzing trace with hash -1534632812, now seen corresponding path program 5 times [2022-11-03 02:51:59,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:51:59,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352002827] [2022-11-03 02:51:59,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:51:59,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:51:59,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:52:00,167 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:52:00,167 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:52:00,167 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352002827] [2022-11-03 02:52:00,167 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [352002827] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:52:00,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1831543443] [2022-11-03 02:52:00,168 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-03 02:52:00,168 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:52:00,168 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caff0959-c3a4-4e30-a77a-468d741d96ab/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:52:00,169 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caff0959-c3a4-4e30-a77a-468d741d96ab/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:52:00,170 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caff0959-c3a4-4e30-a77a-468d741d96ab/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-03 02:52:00,367 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-11-03 02:52:00,368 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 02:52:00,370 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 39 conjunts are in the unsatisfiable core [2022-11-03 02:52:00,373 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:52:00,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:00,487 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 43 [2022-11-03 02:52:00,617 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 120 treesize of output 118 [2022-11-03 02:52:00,632 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 31 [2022-11-03 02:52:00,671 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 27 treesize of output 15 [2022-11-03 02:52:00,676 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 15 treesize of output 7 [2022-11-03 02:52:00,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:00,715 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 3 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 84 treesize of output 138 [2022-11-03 02:52:00,780 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 21 treesize of output 13 [2022-11-03 02:52:00,795 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 21 treesize of output 13 [2022-11-03 02:52:00,805 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 21 treesize of output 13 [2022-11-03 02:52:00,828 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 42 treesize of output 28 [2022-11-03 02:52:00,832 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 28 treesize of output 16 [2022-11-03 02:52:00,849 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 42 treesize of output 28 [2022-11-03 02:52:00,854 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 28 treesize of output 16 [2022-11-03 02:52:00,869 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-03 02:52:01,709 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:52:01,709 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 119 treesize of output 65 [2022-11-03 02:52:01,748 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:52:01,748 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:52:02,077 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:52:02,077 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 44 treesize of output 54 [2022-11-03 02:52:02,403 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:52:02,406 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:52:02,407 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 582 treesize of output 527 [2022-11-03 02:52:02,481 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 110 treesize of output 102 [2022-11-03 02:52:02,489 INFO L356 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2022-11-03 02:52:02,490 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 216 treesize of output 197 [2022-11-03 02:52:02,572 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:52:02,573 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1831543443] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:52:02,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1073187289] [2022-11-03 02:52:02,575 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-11-03 02:52:02,575 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 02:52:02,575 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 02:52:02,575 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 02:52:02,575 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 02:52:02,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:02,624 INFO L356 Elim1Store]: treesize reduction 24, result has 44.2 percent of original size [2022-11-03 02:52:02,624 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 24 treesize of output 40 [2022-11-03 02:52:02,639 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:02,671 INFO L356 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-11-03 02:52:02,672 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 32 treesize of output 49 [2022-11-03 02:52:02,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:02,721 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 8 select indices, 8 select index equivalence classes, 20 disjoint index pairs (out of 28 index pairs), introduced 10 new quantified variables, introduced 0 case distinctions, treesize of input 99 treesize of output 185 [2022-11-03 02:52:02,844 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:02,848 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:02,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:02,858 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 8 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 11 new quantified variables, introduced 0 case distinctions, treesize of input 555 treesize of output 797 [2022-11-03 02:52:02,953 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 376 treesize of output 384 [2022-11-03 02:52:02,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:03,050 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 378 treesize of output 386 [2022-11-03 02:52:03,113 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 380 treesize of output 388 [2022-11-03 02:52:03,147 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 360 treesize of output 353 [2022-11-03 02:52:03,177 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:03,216 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 375 treesize of output 383 [2022-11-03 02:52:03,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:03,253 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:03,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:03,290 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 4 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 95 treesize of output 598 [2022-11-03 02:52:03,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:03,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:03,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:03,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:03,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:03,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:03,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:03,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:03,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:03,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:03,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:03,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:03,689 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:03,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:03,698 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:03,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:03,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:03,709 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 11 stores, 3 select indices, 3 select index equivalence classes, 19 disjoint index pairs (out of 3 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 1573 treesize of output 1992 [2022-11-03 02:52:04,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:04,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:04,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:04,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:04,540 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:04,543 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:04,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:04,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:04,577 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:04,582 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:04,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:04,623 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:04,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:04,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:04,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:04,660 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 13 stores, 2 select indices, 2 select index equivalence classes, 19 disjoint index pairs (out of 1 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 1447 treesize of output 2151 [2022-11-03 02:52:06,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:06,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:06,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:06,946 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:06,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:06,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:06,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:06,963 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:06,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:06,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:06,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:06,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:06,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:06,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:06,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:06,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:07,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:07,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:07,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:07,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:07,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:07,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:07,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:07,041 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:07,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:07,052 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:07,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:07,065 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:07,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:07,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:07,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:07,085 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 7 stores, 3 select indices, 3 select index equivalence classes, 33 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 359 treesize of output 446 [2022-11-03 02:52:07,174 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:07,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:07,185 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:07,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:07,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:07,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:07,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:07,218 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:07,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:07,229 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:07,233 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:07,236 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:07,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:07,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:07,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:07,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:07,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:07,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:07,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:07,279 INFO L244 Elim1Store]: Index analysis took 111 ms [2022-11-03 02:52:07,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:07,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:07,312 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:07,320 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:07,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:07,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:07,345 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:07,352 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:07,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:07,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:07,368 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 7 stores, 3 select indices, 3 select index equivalence classes, 33 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 342 treesize of output 456 [2022-11-03 02:52:15,291 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 02:52:15,867 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1127#(and (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 ~CELLCOUNT~0) (<= 0 |ULTIMATE.start_main_~i~0#1|) (<= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| 1) (<= 0 |ULTIMATE.start___VERIFIER_assert_#in~cond#1|))' at error location [2022-11-03 02:52:15,867 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 02:52:15,867 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 02:52:15,867 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 11] total 30 [2022-11-03 02:52:15,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188687730] [2022-11-03 02:52:15,868 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 02:52:15,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-11-03 02:52:15,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:52:15,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-11-03 02:52:15,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=1142, Unknown=0, NotChecked=0, Total=1260 [2022-11-03 02:52:15,870 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand has 30 states, 30 states have (on average 1.9333333333333333) internal successors, (58), 30 states have internal predecessors, (58), 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) [2022-11-03 02:52:19,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:52:19,610 INFO L93 Difference]: Finished difference Result 36 states and 44 transitions. [2022-11-03 02:52:19,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-03 02:52:19,611 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 1.9333333333333333) internal successors, (58), 30 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-11-03 02:52:19,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:52:19,611 INFO L225 Difference]: With dead ends: 36 [2022-11-03 02:52:19,612 INFO L226 Difference]: Without dead ends: 34 [2022-11-03 02:52:19,613 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 38 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 591 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=435, Invalid=2871, Unknown=0, NotChecked=0, Total=3306 [2022-11-03 02:52:19,613 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 59 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 327 mSolverCounterSat, 170 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 497 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 170 IncrementalHoareTripleChecker+Valid, 327 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:52:19,613 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 57 Invalid, 497 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [170 Valid, 327 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-03 02:52:19,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2022-11-03 02:52:19,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 25. [2022-11-03 02:52:19,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 24 states have (on average 1.0833333333333333) internal successors, (26), 24 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:52:19,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 26 transitions. [2022-11-03 02:52:19,623 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 26 transitions. Word has length 21 [2022-11-03 02:52:19,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:52:19,623 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 26 transitions. [2022-11-03 02:52:19,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 1.9333333333333333) internal successors, (58), 30 states have internal predecessors, (58), 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) [2022-11-03 02:52:19,623 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 26 transitions. [2022-11-03 02:52:19,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-03 02:52:19,624 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:52:19,624 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 2, 1, 1, 1, 1, 1, 1] [2022-11-03 02:52:19,645 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caff0959-c3a4-4e30-a77a-468d741d96ab/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-11-03 02:52:19,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caff0959-c3a4-4e30-a77a-468d741d96ab/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:52:19,827 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:52:19,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:52:19,827 INFO L85 PathProgramCache]: Analyzing trace with hash 1686043554, now seen corresponding path program 6 times [2022-11-03 02:52:19,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:52:19,827 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483241491] [2022-11-03 02:52:19,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:52:19,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:52:19,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:52:20,433 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:52:20,433 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:52:20,434 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483241491] [2022-11-03 02:52:20,434 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1483241491] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:52:20,434 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [461760152] [2022-11-03 02:52:20,434 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-03 02:52:20,434 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:52:20,434 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caff0959-c3a4-4e30-a77a-468d741d96ab/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:52:20,436 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caff0959-c3a4-4e30-a77a-468d741d96ab/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:52:20,438 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caff0959-c3a4-4e30-a77a-468d741d96ab/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-03 02:52:20,537 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-03 02:52:20,537 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 02:52:20,539 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 28 conjunts are in the unsatisfiable core [2022-11-03 02:52:20,541 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:52:20,588 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 43 [2022-11-03 02:52:20,596 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 18 treesize of output 7 [2022-11-03 02:52:20,600 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-03 02:52:20,944 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 61 treesize of output 37 [2022-11-03 02:52:20,988 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:52:20,988 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:52:21,344 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:52:21,344 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 44 treesize of output 54 [2022-11-03 02:52:21,374 INFO L356 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2022-11-03 02:52:21,374 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 39 treesize of output 29 [2022-11-03 02:52:21,382 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 13 treesize of output 4 [2022-11-03 02:52:21,397 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:52:21,398 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [461760152] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:52:21,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1758350643] [2022-11-03 02:52:21,400 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-11-03 02:52:21,400 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 02:52:21,400 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 02:52:21,400 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 02:52:21,401 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 02:52:21,417 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:21,445 INFO L356 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-11-03 02:52:21,445 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 32 treesize of output 49 [2022-11-03 02:52:21,456 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:21,457 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 32 [2022-11-03 02:52:21,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:21,497 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 8 select indices, 8 select index equivalence classes, 20 disjoint index pairs (out of 28 index pairs), introduced 10 new quantified variables, introduced 0 case distinctions, treesize of input 99 treesize of output 185 [2022-11-03 02:52:21,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:21,555 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:21,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:21,557 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 5 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 355 treesize of output 459 [2022-11-03 02:52:21,641 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 4 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 95 treesize of output 598 [2022-11-03 02:52:21,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:21,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:21,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:21,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:21,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:21,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:21,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:21,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:21,898 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 3 select indices, 3 select index equivalence classes, 10 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 366 treesize of output 314 [2022-11-03 02:52:21,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:21,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:21,941 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:21,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:21,946 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:21,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:21,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:21,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:21,954 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 4 stores, 3 select indices, 3 select index equivalence classes, 11 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 367 treesize of output 1190 [2022-11-03 02:52:21,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:21,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:21,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:22,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:22,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:22,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:22,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:22,008 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:22,009 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 4 stores, 3 select indices, 3 select index equivalence classes, 10 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 1189 treesize of output 1172 [2022-11-03 02:52:22,208 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:52:22,209 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:52:22,217 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-11-03 02:52:22,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:22,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:22,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:22,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:22,417 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:22,419 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:22,421 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:22,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:22,426 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 4 stores, 9 select indices, 9 select index equivalence classes, 22 disjoint index pairs (out of 36 index pairs), introduced 13 new quantified variables, introduced 0 case distinctions, treesize of input 195 treesize of output 486 [2022-11-03 02:52:22,450 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 4 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 444 treesize of output 1963 [2022-11-03 02:52:22,471 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 16 [2022-11-03 02:52:22,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:22,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:22,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:22,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:22,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:22,946 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:22,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:22,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:22,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:22,954 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 3 stores, 3 select indices, 3 select index equivalence classes, 11 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 279 treesize of output 255 [2022-11-03 02:52:22,972 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 84 treesize of output 42 [2022-11-03 02:52:22,999 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:52:23,000 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:52:23,006 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-11-03 02:52:23,185 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:23,185 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 49 [2022-11-03 02:52:23,221 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 5 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 283 treesize of output 353 [2022-11-03 02:52:23,240 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:23,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:23,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:23,391 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 4 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 95 treesize of output 598 [2022-11-03 02:52:23,763 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:23,764 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 3 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 300 treesize of output 258 [2022-11-03 02:52:23,782 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:23,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:23,788 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:23,809 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 3 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 258 treesize of output 407 [2022-11-03 02:52:23,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:23,842 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 6 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 523 treesize of output 3847 [2022-11-03 02:52:23,903 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 6 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 1634 treesize of output 10156 [2022-11-03 02:52:23,937 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 16 [2022-11-03 02:52:23,964 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 4 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 976 treesize of output 988 [2022-11-03 02:52:24,009 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 4 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 981 treesize of output 1508 [2022-11-03 02:52:24,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:24,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:24,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:24,152 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:24,155 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:24,158 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:24,160 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:24,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:24,164 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 3 stores, 3 select indices, 3 select index equivalence classes, 11 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 441 treesize of output 950 [2022-11-03 02:52:24,240 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 535 treesize of output 367 [2022-11-03 02:52:24,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:24,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:24,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:24,306 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 4 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 344 treesize of output 309 [2022-11-03 02:52:24,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:24,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:24,337 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:24,376 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 3 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 283 treesize of output 447 [2022-11-03 02:52:24,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:24,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:24,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:24,416 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 4 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 139 treesize of output 238 [2022-11-03 02:52:24,479 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-11-03 02:52:24,498 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 86 treesize of output 44 [2022-11-03 02:52:24,509 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 19 [2022-11-03 02:52:24,540 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 22 [2022-11-03 02:52:24,557 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-11-03 02:52:24,567 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-11-03 02:52:24,598 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 3 [2022-11-03 02:52:24,624 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:24,625 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:24,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:24,632 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 4 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 626 treesize of output 1763 [2022-11-03 02:52:24,669 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-11-03 02:52:24,690 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 0 case distinctions, treesize of input 2400 treesize of output 2405 [2022-11-03 02:52:24,789 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 3 [2022-11-03 02:52:25,008 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 02:52:25,858 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1431#(and (= |ULTIMATE.start_main_~CCCELVOL3~0#1| 7) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= ~CELLCOUNT~0 2147483647) (= |ULTIMATE.start_main_~CCCELVOL1~0#1| 1) (<= 1 ~CELLCOUNT~0) (= |ULTIMATE.start_main_~#volArray~0#1.offset| 0) (<= 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_~CCCELVOL2~0#1| 3) (<= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| 1) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (<= 0 |ULTIMATE.start_main_~#volArray~0#1.base|) (<= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (<= 0 |#StackHeapBarrier|) (<= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |#NULL.base| 0))' at error location [2022-11-03 02:52:25,858 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 02:52:25,858 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 02:52:25,858 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 12] total 29 [2022-11-03 02:52:25,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20382639] [2022-11-03 02:52:25,859 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 02:52:25,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-11-03 02:52:25,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:52:25,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-11-03 02:52:25,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=1147, Unknown=0, NotChecked=0, Total=1260 [2022-11-03 02:52:25,860 INFO L87 Difference]: Start difference. First operand 25 states and 26 transitions. Second operand has 29 states, 29 states have (on average 2.1724137931034484) internal successors, (63), 29 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:52:29,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:52:29,697 INFO L93 Difference]: Finished difference Result 69 states and 78 transitions. [2022-11-03 02:52:29,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-11-03 02:52:29,697 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 2.1724137931034484) internal successors, (63), 29 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-11-03 02:52:29,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:52:29,698 INFO L225 Difference]: With dead ends: 69 [2022-11-03 02:52:29,698 INFO L226 Difference]: Without dead ends: 67 [2022-11-03 02:52:29,700 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 46 SyntacticMatches, 3 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1453 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=684, Invalid=5322, Unknown=0, NotChecked=0, Total=6006 [2022-11-03 02:52:29,700 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 62 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 367 mSolverCounterSat, 188 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 555 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 188 IncrementalHoareTripleChecker+Valid, 367 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:52:29,701 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 66 Invalid, 555 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [188 Valid, 367 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-03 02:52:29,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2022-11-03 02:52:29,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 28. [2022-11-03 02:52:29,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.0740740740740742) internal successors, (29), 27 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:52:29,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 29 transitions. [2022-11-03 02:52:29,713 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 29 transitions. Word has length 24 [2022-11-03 02:52:29,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:52:29,713 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 29 transitions. [2022-11-03 02:52:29,713 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 2.1724137931034484) internal successors, (63), 29 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:52:29,713 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 29 transitions. [2022-11-03 02:52:29,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-03 02:52:29,714 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:52:29,714 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 2, 1, 1, 1, 1, 1, 1] [2022-11-03 02:52:29,754 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caff0959-c3a4-4e30-a77a-468d741d96ab/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-03 02:52:29,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caff0959-c3a4-4e30-a77a-468d741d96ab/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-11-03 02:52:29,939 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:52:29,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:52:29,939 INFO L85 PathProgramCache]: Analyzing trace with hash -713729580, now seen corresponding path program 7 times [2022-11-03 02:52:29,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:52:29,939 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538857080] [2022-11-03 02:52:29,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:52:29,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:52:29,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:52:30,391 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 41 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:52:30,391 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:52:30,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538857080] [2022-11-03 02:52:30,391 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1538857080] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:52:30,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [945291437] [2022-11-03 02:52:30,391 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-03 02:52:30,392 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:52:30,392 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caff0959-c3a4-4e30-a77a-468d741d96ab/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:52:30,393 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caff0959-c3a4-4e30-a77a-468d741d96ab/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:52:30,413 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caff0959-c3a4-4e30-a77a-468d741d96ab/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-03 02:52:30,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:52:30,497 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-03 02:52:30,500 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:52:30,993 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 57 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:52:30,993 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:52:31,223 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 57 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:52:31,224 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [945291437] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:52:31,224 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [591334305] [2022-11-03 02:52:31,226 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-11-03 02:52:31,226 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 02:52:31,227 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 02:52:31,227 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 02:52:31,227 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 02:52:31,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:31,272 INFO L356 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-11-03 02:52:31,273 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 32 treesize of output 49 [2022-11-03 02:52:31,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:31,286 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 32 [2022-11-03 02:52:31,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:31,327 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 8 select indices, 8 select index equivalence classes, 20 disjoint index pairs (out of 28 index pairs), introduced 10 new quantified variables, introduced 0 case distinctions, treesize of input 89 treesize of output 175 [2022-11-03 02:52:31,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:31,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:31,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:31,464 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 8 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 11 new quantified variables, introduced 0 case distinctions, treesize of input 449 treesize of output 699 [2022-11-03 02:52:31,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:31,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:31,547 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 310 treesize of output 318 [2022-11-03 02:52:31,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:31,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:31,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:31,631 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 312 treesize of output 320 [2022-11-03 02:52:31,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:31,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:31,713 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 314 treesize of output 322 [2022-11-03 02:52:31,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:31,752 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:31,775 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 316 treesize of output 324 [2022-11-03 02:52:31,808 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 302 treesize of output 300 [2022-11-03 02:52:31,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:31,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:31,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:31,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:31,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:31,880 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 4 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 410 [2022-11-03 02:52:32,286 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:52:32,287 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:52:32,296 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-11-03 02:52:32,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:32,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:32,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:32,375 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:32,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:32,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:32,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:32,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:32,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:32,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:32,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:32,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:32,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:32,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:32,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:32,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:32,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:32,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:32,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:32,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:32,500 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:32,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:32,505 INFO L244 Elim1Store]: Index analysis took 139 ms [2022-11-03 02:52:32,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:32,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:32,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:32,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:32,568 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:32,574 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:32,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:32,606 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:32,615 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:32,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:32,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:32,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:32,638 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 7 stores, 3 select indices, 3 select index equivalence classes, 36 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 127 treesize of output 248 [2022-11-03 02:52:32,664 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 15 treesize of output 7 [2022-11-03 02:52:32,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:32,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:32,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:32,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:32,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:32,754 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:32,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:32,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:32,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:32,782 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:32,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:32,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:32,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:32,798 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:32,806 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:32,810 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:32,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:32,822 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:32,829 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:32,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:32,844 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:32,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:32,859 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:32,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:32,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:32,884 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 9 stores, 3 select indices, 3 select index equivalence classes, 27 disjoint index pairs (out of 3 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 791 treesize of output 1078 [2022-11-03 02:52:32,914 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 15 treesize of output 7 [2022-11-03 02:52:35,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:35,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:35,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:35,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:35,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:35,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:35,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:35,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:35,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:35,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:35,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:35,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:35,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:35,690 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:35,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:35,697 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:35,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:35,702 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 6 stores, 3 select indices, 3 select index equivalence classes, 19 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 272 treesize of output 249 [2022-11-03 02:52:35,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:35,728 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:35,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:35,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:35,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:35,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:35,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:35,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:35,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:35,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:35,744 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 3 stores, 3 select indices, 3 select index equivalence classes, 11 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 149 treesize of output 269 [2022-11-03 02:52:35,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:35,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:35,775 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:35,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:35,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:35,790 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 4 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 292 treesize of output 780 [2022-11-03 02:52:35,870 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:52:35,871 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:52:35,880 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-11-03 02:52:40,105 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 02:52:40,576 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1848#(and (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 ~CELLCOUNT~0) (<= 0 |ULTIMATE.start_main_~i~0#1|) (<= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| 1) (<= 0 |ULTIMATE.start___VERIFIER_assert_#in~cond#1|))' at error location [2022-11-03 02:52:40,576 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 02:52:40,576 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 02:52:40,576 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 12] total 33 [2022-11-03 02:52:40,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825280970] [2022-11-03 02:52:40,577 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 02:52:40,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-11-03 02:52:40,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:52:40,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-11-03 02:52:40,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=277, Invalid=1205, Unknown=0, NotChecked=0, Total=1482 [2022-11-03 02:52:40,578 INFO L87 Difference]: Start difference. First operand 28 states and 29 transitions. Second operand has 33 states, 33 states have (on average 2.242424242424242) internal successors, (74), 33 states have internal predecessors, (74), 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) [2022-11-03 02:52:40,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:52:40,955 INFO L93 Difference]: Finished difference Result 53 states and 55 transitions. [2022-11-03 02:52:40,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-03 02:52:40,956 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 2.242424242424242) internal successors, (74), 33 states have internal predecessors, (74), 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 27 [2022-11-03 02:52:40,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:52:40,956 INFO L225 Difference]: With dead ends: 53 [2022-11-03 02:52:40,957 INFO L226 Difference]: Without dead ends: 29 [2022-11-03 02:52:40,957 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 54 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 757 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=419, Invalid=1743, Unknown=0, NotChecked=0, Total=2162 [2022-11-03 02:52:40,958 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 47 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:52:40,958 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 60 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 02:52:40,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-11-03 02:52:40,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2022-11-03 02:52:40,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 28 states have (on average 1.0714285714285714) internal successors, (30), 28 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:52:40,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 30 transitions. [2022-11-03 02:52:40,972 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 30 transitions. Word has length 27 [2022-11-03 02:52:40,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:52:40,972 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 30 transitions. [2022-11-03 02:52:40,973 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 2.242424242424242) internal successors, (74), 33 states have internal predecessors, (74), 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) [2022-11-03 02:52:40,973 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 30 transitions. [2022-11-03 02:52:40,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-03 02:52:40,973 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:52:40,974 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 3, 1, 1, 1, 1, 1, 1] [2022-11-03 02:52:40,999 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caff0959-c3a4-4e30-a77a-468d741d96ab/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-03 02:52:41,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caff0959-c3a4-4e30-a77a-468d741d96ab/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-11-03 02:52:41,179 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:52:41,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:52:41,179 INFO L85 PathProgramCache]: Analyzing trace with hash -2030633552, now seen corresponding path program 8 times [2022-11-03 02:52:41,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:52:41,179 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981483130] [2022-11-03 02:52:41,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:52:41,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:52:41,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:52:42,227 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:52:42,227 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:52:42,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981483130] [2022-11-03 02:52:42,228 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1981483130] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:52:42,228 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1553628116] [2022-11-03 02:52:42,228 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-03 02:52:42,228 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:52:42,228 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caff0959-c3a4-4e30-a77a-468d741d96ab/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:52:42,230 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caff0959-c3a4-4e30-a77a-468d741d96ab/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:52:42,231 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caff0959-c3a4-4e30-a77a-468d741d96ab/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-03 02:52:42,562 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2022-11-03 02:52:42,562 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 02:52:42,566 INFO L263 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 42 conjunts are in the unsatisfiable core [2022-11-03 02:52:42,571 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:52:42,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:42,703 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 43 [2022-11-03 02:52:42,765 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 77 treesize of output 75 [2022-11-03 02:52:42,774 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 18 treesize of output 22 [2022-11-03 02:52:42,825 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-03 02:52:42,858 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 3 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 73 treesize of output 97 [2022-11-03 02:52:42,864 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 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 28 treesize of output 58 [2022-11-03 02:52:42,872 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 14 [2022-11-03 02:52:42,910 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 42 treesize of output 30 [2022-11-03 02:52:42,914 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 30 treesize of output 9 [2022-11-03 02:52:42,931 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 42 treesize of output 30 [2022-11-03 02:52:42,940 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 30 treesize of output 9 [2022-11-03 02:52:42,957 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-03 02:52:43,011 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 0 case distinctions, treesize of input 82 treesize of output 82 [2022-11-03 02:52:43,029 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 36 [2022-11-03 02:52:43,618 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 75 treesize of output 45 [2022-11-03 02:52:43,670 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:52:43,670 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:52:43,900 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:52:43,900 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 44 treesize of output 54 [2022-11-03 02:52:44,028 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:52:44,029 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 3 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 121 treesize of output 139 [2022-11-03 02:52:44,060 INFO L356 Elim1Store]: treesize reduction 13, result has 75.5 percent of original size [2022-11-03 02:52:44,061 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 40 treesize of output 69 [2022-11-03 02:52:44,193 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:52:44,193 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 35 treesize of output 18 [2022-11-03 02:52:44,239 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 4 [2022-11-03 02:52:44,256 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:52:44,256 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 3 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 119 treesize of output 144 [2022-11-03 02:52:44,279 INFO L356 Elim1Store]: treesize reduction 13, result has 75.5 percent of original size [2022-11-03 02:52:44,279 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 40 treesize of output 69 [2022-11-03 02:52:44,352 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 18 treesize of output 6 [2022-11-03 02:52:44,369 INFO L356 Elim1Store]: treesize reduction 12, result has 7.7 percent of original size [2022-11-03 02:52:44,370 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 35 treesize of output 1 [2022-11-03 02:52:44,381 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 4 [2022-11-03 02:52:44,385 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 115 treesize of output 103 [2022-11-03 02:52:44,394 INFO L356 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2022-11-03 02:52:44,394 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 135 treesize of output 110 [2022-11-03 02:52:44,482 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:52:44,482 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1553628116] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:52:44,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [934671867] [2022-11-03 02:52:44,484 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-11-03 02:52:44,484 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 02:52:44,484 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 02:52:44,484 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 02:52:44,485 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 02:52:44,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:44,529 INFO L356 Elim1Store]: treesize reduction 24, result has 44.2 percent of original size [2022-11-03 02:52:44,529 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 24 treesize of output 40 [2022-11-03 02:52:44,540 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:44,567 INFO L356 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-11-03 02:52:44,567 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 32 treesize of output 49 [2022-11-03 02:52:44,604 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:44,605 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 8 select indices, 8 select index equivalence classes, 20 disjoint index pairs (out of 28 index pairs), introduced 10 new quantified variables, introduced 0 case distinctions, treesize of input 89 treesize of output 175 [2022-11-03 02:52:44,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:44,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:44,668 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 5 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 331 treesize of output 429 [2022-11-03 02:52:44,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:44,697 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:44,754 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 4 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 410 [2022-11-03 02:52:44,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:44,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:44,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:44,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:44,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:44,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:44,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:44,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:44,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:44,908 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 3 stores, 3 select indices, 3 select index equivalence classes, 11 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 338 treesize of output 292 [2022-11-03 02:52:44,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:44,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:44,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:44,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:44,948 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 4 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 250 treesize of output 738 [2022-11-03 02:52:45,002 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-11-03 02:52:45,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:45,029 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:45,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:45,051 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:45,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:45,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:45,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:45,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:45,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:45,100 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 3 stores, 3 select indices, 3 select index equivalence classes, 11 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 338 treesize of output 292 [2022-11-03 02:52:45,152 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:45,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:45,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:45,167 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:45,214 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 4 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 250 treesize of output 618 [2022-11-03 02:52:45,416 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:45,423 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:45,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:45,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:45,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:45,444 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 576 treesize of output 512 [2022-11-03 02:52:45,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:45,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:45,491 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 6 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 386 treesize of output 2887 [2022-11-03 02:52:45,574 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:45,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:45,604 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 7 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 10 new quantified variables, introduced 0 case distinctions, treesize of input 2452 treesize of output 17510 [2022-11-03 02:52:45,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:45,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:45,683 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 16 [2022-11-03 02:52:45,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:45,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:45,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:45,718 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 4 stores, 9 select indices, 9 select index equivalence classes, 22 disjoint index pairs (out of 36 index pairs), introduced 13 new quantified variables, introduced 0 case distinctions, treesize of input 166 treesize of output 442 [2022-11-03 02:52:45,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:45,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:45,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:45,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:45,932 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:45,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:45,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:45,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:45,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:45,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:45,941 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 3 stores, 3 select indices, 3 select index equivalence classes, 14 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 137 treesize of output 131 [2022-11-03 02:52:45,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:45,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:45,958 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 14 [2022-11-03 02:52:46,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:46,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:46,041 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 4 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 721 treesize of output 774 [2022-11-03 02:52:46,052 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:46,053 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:46,054 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 14 [2022-11-03 02:52:46,549 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:46,550 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 49 [2022-11-03 02:52:46,582 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 5 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 283 treesize of output 353 [2022-11-03 02:52:46,605 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:46,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:46,612 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:46,765 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 4 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 95 treesize of output 598 [2022-11-03 02:52:46,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:46,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:46,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:46,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:46,963 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:46,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:46,967 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 4 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 285 treesize of output 256 [2022-11-03 02:52:47,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:47,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:47,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:47,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:47,032 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:52:47,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:47,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:47,043 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:52:47,044 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 3 stores, 3 select indices, 3 select index equivalence classes, 9 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 230 treesize of output 447 [2022-11-03 02:52:47,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:47,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:47,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:47,097 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:47,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:47,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:47,103 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 4 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 285 treesize of output 256 [2022-11-03 02:52:47,126 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:47,131 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:47,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:47,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:47,140 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:52:47,140 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:52:47,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:47,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:47,150 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 3 stores, 3 select indices, 3 select index equivalence classes, 9 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 230 treesize of output 431 [2022-11-03 02:52:47,201 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-11-03 02:52:47,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:47,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:47,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:47,269 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 6 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 459 treesize of output 3547 [2022-11-03 02:52:47,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:47,323 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 4 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 828 treesize of output 3403 [2022-11-03 02:52:47,348 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 16 [2022-11-03 02:52:47,429 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-11-03 02:52:47,446 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 3 [2022-11-03 02:52:47,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:47,461 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:47,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:47,463 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:52:47,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:47,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:47,467 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 4 stores, 3 select indices, 3 select index equivalence classes, 8 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 467 treesize of output 981 [2022-11-03 02:52:47,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:47,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:47,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:47,493 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 4 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 139 treesize of output 238 [2022-11-03 02:52:47,512 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:47,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:47,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:47,515 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 3 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 70 treesize of output 64 [2022-11-03 02:52:47,527 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 19 [2022-11-03 02:52:47,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:47,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:47,549 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:47,550 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 3 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 70 treesize of output 64 [2022-11-03 02:52:47,562 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 19 [2022-11-03 02:52:47,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:47,611 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 48 [2022-11-03 02:52:47,622 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 19 [2022-11-03 02:52:47,642 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 19 [2022-11-03 02:52:47,659 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-11-03 02:52:47,683 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 32 [2022-11-03 02:52:47,694 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 22 [2022-11-03 02:52:47,715 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 22 [2022-11-03 02:52:47,734 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 32 [2022-11-03 02:52:47,745 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 10 [2022-11-03 02:52:47,942 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 02:52:48,819 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2176#(and (= |ULTIMATE.start_main_~CCCELVOL3~0#1| 7) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= ~CELLCOUNT~0 2147483647) (= |ULTIMATE.start_main_~CCCELVOL1~0#1| 1) (<= 1 ~CELLCOUNT~0) (= |ULTIMATE.start_main_~#volArray~0#1.offset| 0) (<= 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_~CCCELVOL2~0#1| 3) (<= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| 1) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (<= 0 |ULTIMATE.start_main_~#volArray~0#1.base|) (<= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (<= 0 |#StackHeapBarrier|) (<= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |#NULL.base| 0))' at error location [2022-11-03 02:52:48,819 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 02:52:48,819 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 02:52:48,820 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 14] total 32 [2022-11-03 02:52:48,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818928611] [2022-11-03 02:52:48,820 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 02:52:48,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-03 02:52:48,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:52:48,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-03 02:52:48,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=1338, Unknown=0, NotChecked=0, Total=1482 [2022-11-03 02:52:48,821 INFO L87 Difference]: Start difference. First operand 29 states and 30 transitions. Second operand has 32 states, 32 states have (on average 2.0) internal successors, (64), 32 states have internal predecessors, (64), 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) [2022-11-03 02:52:53,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:52:53,105 INFO L93 Difference]: Finished difference Result 80 states and 90 transitions. [2022-11-03 02:52:53,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-11-03 02:52:53,106 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 2.0) internal successors, (64), 32 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-11-03 02:52:53,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:52:53,107 INFO L225 Difference]: With dead ends: 80 [2022-11-03 02:52:53,107 INFO L226 Difference]: Without dead ends: 78 [2022-11-03 02:52:53,109 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 58 SyntacticMatches, 2 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2078 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=872, Invalid=6960, Unknown=0, NotChecked=0, Total=7832 [2022-11-03 02:52:53,110 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 72 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 433 mSolverCounterSat, 223 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 656 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 223 IncrementalHoareTripleChecker+Valid, 433 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:52:53,112 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 93 Invalid, 656 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [223 Valid, 433 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-03 02:52:53,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2022-11-03 02:52:53,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 32. [2022-11-03 02:52:53,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 31 states have (on average 1.064516129032258) internal successors, (33), 31 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:52:53,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 33 transitions. [2022-11-03 02:52:53,135 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 33 transitions. Word has length 28 [2022-11-03 02:52:53,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:52:53,135 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 33 transitions. [2022-11-03 02:52:53,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 2.0) internal successors, (64), 32 states have internal predecessors, (64), 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) [2022-11-03 02:52:53,136 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 33 transitions. [2022-11-03 02:52:53,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-11-03 02:52:53,139 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:52:53,139 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 3, 1, 1, 1, 1, 1, 1] [2022-11-03 02:52:53,180 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caff0959-c3a4-4e30-a77a-468d741d96ab/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-03 02:52:53,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caff0959-c3a4-4e30-a77a-468d741d96ab/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-03 02:52:53,363 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:52:53,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:52:53,363 INFO L85 PathProgramCache]: Analyzing trace with hash 15496454, now seen corresponding path program 9 times [2022-11-03 02:52:53,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:52:53,364 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204486026] [2022-11-03 02:52:53,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:52:53,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:52:53,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:52:54,362 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 0 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:52:54,362 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:52:54,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204486026] [2022-11-03 02:52:54,362 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [204486026] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:52:54,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1751088980] [2022-11-03 02:52:54,362 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-03 02:52:54,363 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:52:54,363 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caff0959-c3a4-4e30-a77a-468d741d96ab/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:52:54,364 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caff0959-c3a4-4e30-a77a-468d741d96ab/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:52:54,393 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caff0959-c3a4-4e30-a77a-468d741d96ab/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-03 02:52:54,507 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-03 02:52:54,507 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 02:52:54,509 INFO L263 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 39 conjunts are in the unsatisfiable core [2022-11-03 02:52:54,517 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:52:54,656 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:54,657 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 43 [2022-11-03 02:52:54,712 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 0 case distinctions, treesize of input 65 treesize of output 70 [2022-11-03 02:52:54,737 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-03 02:52:54,761 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 3 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 93 [2022-11-03 02:52:54,769 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 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 28 treesize of output 58 [2022-11-03 02:52:54,848 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-03 02:52:54,857 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 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 78 treesize of output 80 [2022-11-03 02:52:54,895 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 27 treesize of output 16 [2022-11-03 02:52:54,899 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 0 case distinctions, treesize of input 16 treesize of output 1 [2022-11-03 02:52:55,724 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 75 treesize of output 45 [2022-11-03 02:52:55,772 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 0 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:52:55,772 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:52:56,299 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:52:56,299 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 44 treesize of output 54 [2022-11-03 02:52:56,370 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 181 treesize of output 160 [2022-11-03 02:52:56,373 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:52:56,382 INFO L356 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2022-11-03 02:52:56,382 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 120 treesize of output 98 [2022-11-03 02:52:56,390 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 13 treesize of output 4 [2022-11-03 02:52:56,482 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 0 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:52:56,482 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1751088980] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:52:56,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1957131276] [2022-11-03 02:52:56,484 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-11-03 02:52:56,484 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 02:52:56,484 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 02:52:56,485 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 02:52:56,485 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 02:52:56,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:56,529 INFO L356 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-11-03 02:52:56,529 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 32 treesize of output 49 [2022-11-03 02:52:56,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:56,542 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 32 [2022-11-03 02:52:56,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:56,577 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 8 select indices, 8 select index equivalence classes, 20 disjoint index pairs (out of 28 index pairs), introduced 10 new quantified variables, introduced 0 case distinctions, treesize of input 99 treesize of output 185 [2022-11-03 02:52:56,625 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:56,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:56,628 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:56,629 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 5 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 380 treesize of output 478 [2022-11-03 02:52:56,712 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 4 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 95 treesize of output 598 [2022-11-03 02:52:56,852 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:56,860 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:56,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:56,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:56,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:56,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:56,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:56,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:56,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:56,923 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:56,932 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:56,941 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:56,947 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:56,954 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:56,961 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:56,962 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 4 stores, 3 select indices, 3 select index equivalence classes, 19 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 356 treesize of output 324 [2022-11-03 02:52:57,043 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:57,050 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:57,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:57,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:57,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:57,062 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:57,065 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:57,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:57,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:57,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:57,075 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:57,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:57,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:57,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:57,087 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:57,088 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 4 stores, 3 select indices, 3 select index equivalence classes, 19 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 356 treesize of output 337 [2022-11-03 02:52:57,131 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-11-03 02:52:57,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:57,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:57,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:57,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:57,410 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:57,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:57,416 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 3 select indices, 3 select index equivalence classes, 8 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 162 treesize of output 122 [2022-11-03 02:52:57,427 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 3 [2022-11-03 02:52:57,449 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:57,451 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:57,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:57,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:57,456 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:57,457 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:52:57,458 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 3 stores, 3 select indices, 3 select index equivalence classes, 8 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 312 treesize of output 515 [2022-11-03 02:52:57,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:57,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:57,534 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:57,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:57,538 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:57,540 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:57,542 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:57,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:57,546 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 4 stores, 9 select indices, 9 select index equivalence classes, 22 disjoint index pairs (out of 36 index pairs), introduced 13 new quantified variables, introduced 0 case distinctions, treesize of input 195 treesize of output 486 [2022-11-03 02:52:57,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:57,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:57,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:57,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:57,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:57,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:57,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:57,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:57,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:57,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:57,667 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 3 stores, 3 select indices, 3 select index equivalence classes, 14 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 179 treesize of output 181 [2022-11-03 02:52:57,687 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 19 [2022-11-03 02:52:57,725 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:57,726 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:57,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:57,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:57,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:57,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:57,741 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 3 select indices, 3 select index equivalence classes, 8 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 196 treesize of output 174 [2022-11-03 02:52:57,756 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 19 [2022-11-03 02:52:57,772 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 19 [2022-11-03 02:52:57,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:57,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:57,814 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 181 treesize of output 139 [2022-11-03 02:52:57,829 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 22 [2022-11-03 02:52:58,029 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:58,030 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:58,032 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:58,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:58,034 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:52:58,035 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 3 stores, 3 select indices, 3 select index equivalence classes, 8 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 231 treesize of output 348 [2022-11-03 02:52:58,053 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:52:58,054 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 4 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 390 treesize of output 1083 [2022-11-03 02:52:58,076 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 4 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 444 treesize of output 1963 [2022-11-03 02:52:58,094 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 16 [2022-11-03 02:52:58,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:58,164 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 49 [2022-11-03 02:52:58,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:58,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:58,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:58,210 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 4 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 265 treesize of output 692 [2022-11-03 02:52:58,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:58,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:58,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:58,415 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 5 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 424 treesize of output 2359 [2022-11-03 02:52:58,471 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:58,477 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 4 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 1020 treesize of output 3763 [2022-11-03 02:52:58,506 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 16 [2022-11-03 02:52:58,533 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-11-03 02:52:58,549 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:58,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:58,552 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:58,556 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 9 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 12 new quantified variables, introduced 0 case distinctions, treesize of input 845 treesize of output 7838 [2022-11-03 02:52:58,628 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 103 treesize of output 61 [2022-11-03 02:52:59,282 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 3232 treesize of output 2126 [2022-11-03 02:52:59,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:59,643 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:59,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:59,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:59,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:59,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:59,778 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 25 stores, 3 select indices, 3 select index equivalence classes, 9 disjoint index pairs (out of 3 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 10167 treesize of output 147596 [2022-11-03 02:53:05,064 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 7 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 168147 treesize of output 168319 [2022-11-03 02:53:15,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:53:15,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:53:15,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:53:16,012 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 4 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 95 treesize of output 598 [2022-11-03 02:53:53,672 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-11-03 02:53:56,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:53:56,763 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:53:56,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:53:56,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:53:56,769 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:53:56,770 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:53:56,771 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 4 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 367 treesize of output 981 [2022-11-03 02:53:57,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:53:57,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:53:57,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:53:57,110 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:53:57,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:53:57,113 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:53:57,114 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 4 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 367 treesize of output 1021 [2022-11-03 02:54:00,945 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 16 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 17 new quantified variables, introduced 0 case distinctions, treesize of input 178594 treesize of output 179339 [2022-11-03 02:54:47,711 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 3 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 569 treesize of output 1561 [2022-11-03 02:54:47,759 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 16 [2022-11-03 02:54:50,066 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 5 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 991 treesize of output 4288 [2022-11-03 02:54:50,123 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 16 [2022-11-03 02:55:12,375 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 27 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 20 new quantified variables, introduced 0 case distinctions, treesize of input 2469 treesize of output 5128 [2022-11-03 02:55:24,441 INFO L244 Elim1Store]: Index analysis took 340 ms [2022-11-03 02:55:24,451 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 15 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 236 treesize of output 549 [2022-11-03 02:55:26,728 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:26,753 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:27,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:27,622 INFO L244 Elim1Store]: Index analysis took 1355 ms [2022-11-03 02:55:27,633 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 15 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 236 treesize of output 549 [2022-11-03 02:56:09,132 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:56:09,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:56:09,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:56:09,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:56:09,146 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:56:09,147 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 5 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 415 treesize of output 2273 [2022-11-03 02:56:09,241 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:56:09,253 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 5 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 991 treesize of output 5008 [2022-11-03 02:56:09,349 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 16 [2022-11-03 02:56:09,513 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 14 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 126 treesize of output 1 [2022-11-03 02:56:09,650 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-11-03 02:56:09,698 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:56:09,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:56:09,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:56:09,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:56:09,702 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:56:09,703 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 5 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 445 treesize of output 2451 [2022-11-03 02:56:09,958 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 02:56:10,872 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2664#(and (= |ULTIMATE.start_main_~CCCELVOL3~0#1| 7) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= ~CELLCOUNT~0 2147483647) (= |ULTIMATE.start_main_~CCCELVOL1~0#1| 1) (<= 1 ~CELLCOUNT~0) (= |ULTIMATE.start_main_~#volArray~0#1.offset| 0) (<= 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_~CCCELVOL2~0#1| 3) (<= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| 1) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (<= 0 |ULTIMATE.start_main_~#volArray~0#1.base|) (<= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (<= 0 |#StackHeapBarrier|) (<= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |#NULL.base| 0))' at error location [2022-11-03 02:56:10,872 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 02:56:10,872 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 02:56:10,873 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 15] total 42 [2022-11-03 02:56:10,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357025156] [2022-11-03 02:56:10,873 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 02:56:10,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-11-03 02:56:10,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:56:10,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-11-03 02:56:10,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=178, Invalid=2174, Unknown=0, NotChecked=0, Total=2352 [2022-11-03 02:56:10,875 INFO L87 Difference]: Start difference. First operand 32 states and 33 transitions. Second operand has 42 states, 42 states have (on average 2.0952380952380953) internal successors, (88), 42 states have internal predecessors, (88), 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) [2022-11-03 02:56:19,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:56:19,511 INFO L93 Difference]: Finished difference Result 106 states and 117 transitions. [2022-11-03 02:56:19,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2022-11-03 02:56:19,512 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 2.0952380952380953) internal successors, (88), 42 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2022-11-03 02:56:19,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:56:19,513 INFO L225 Difference]: With dead ends: 106 [2022-11-03 02:56:19,513 INFO L226 Difference]: Without dead ends: 104 [2022-11-03 02:56:19,516 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 59 SyntacticMatches, 1 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3211 ImplicationChecksByTransitivity, 8.3s TimeCoverageRelationStatistics Valid=1348, Invalid=11992, Unknown=0, NotChecked=0, Total=13340 [2022-11-03 02:56:19,516 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 144 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 748 mSolverCounterSat, 411 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 1159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 411 IncrementalHoareTripleChecker+Valid, 748 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:56:19,516 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 140 Invalid, 1159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [411 Valid, 748 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-11-03 02:56:19,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2022-11-03 02:56:19,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 35. [2022-11-03 02:56:19,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 34 states have (on average 1.0588235294117647) internal successors, (36), 34 states have internal predecessors, (36), 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) [2022-11-03 02:56:19,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 36 transitions. [2022-11-03 02:56:19,533 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 36 transitions. Word has length 31 [2022-11-03 02:56:19,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:56:19,533 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 36 transitions. [2022-11-03 02:56:19,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 2.0952380952380953) internal successors, (88), 42 states have internal predecessors, (88), 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) [2022-11-03 02:56:19,533 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 36 transitions. [2022-11-03 02:56:19,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-11-03 02:56:19,534 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:56:19,534 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 8, 3, 1, 1, 1, 1, 1, 1] [2022-11-03 02:56:19,555 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caff0959-c3a4-4e30-a77a-468d741d96ab/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-03 02:56:19,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caff0959-c3a4-4e30-a77a-468d741d96ab/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:56:19,734 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:56:19,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:56:19,735 INFO L85 PathProgramCache]: Analyzing trace with hash 2098640368, now seen corresponding path program 10 times [2022-11-03 02:56:19,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:56:19,735 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095178496] [2022-11-03 02:56:19,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:56:19,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:56:19,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:56:20,652 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 106 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:56:20,652 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:56:20,652 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095178496] [2022-11-03 02:56:20,652 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1095178496] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:56:20,652 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1498377222] [2022-11-03 02:56:20,652 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-03 02:56:20,653 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:56:20,653 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caff0959-c3a4-4e30-a77a-468d741d96ab/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:56:20,654 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caff0959-c3a4-4e30-a77a-468d741d96ab/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:56:20,674 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caff0959-c3a4-4e30-a77a-468d741d96ab/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-03 02:56:20,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:56:20,796 INFO L263 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 36 conjunts are in the unsatisfiable core [2022-11-03 02:56:20,800 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:56:20,883 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 43 [2022-11-03 02:56:20,891 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-03 02:56:20,912 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 8 treesize of output 1 [2022-11-03 02:56:21,547 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 61 treesize of output 37 [2022-11-03 02:56:21,600 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 106 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:56:21,600 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:56:22,179 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:56:22,180 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 44 treesize of output 54 [2022-11-03 02:56:22,212 INFO L356 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2022-11-03 02:56:22,212 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 41 treesize of output 35 [2022-11-03 02:56:22,242 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 106 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:56:22,242 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1498377222] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:56:22,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1423201203] [2022-11-03 02:56:22,244 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-11-03 02:56:22,244 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 02:56:22,244 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 02:56:22,245 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 02:56:22,245 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 02:56:22,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:56:22,291 INFO L356 Elim1Store]: treesize reduction 24, result has 44.2 percent of original size [2022-11-03 02:56:22,291 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 24 treesize of output 40 [2022-11-03 02:56:22,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:56:22,333 INFO L356 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-11-03 02:56:22,333 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 32 treesize of output 49 [2022-11-03 02:56:22,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:56:22,372 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 8 select indices, 8 select index equivalence classes, 20 disjoint index pairs (out of 28 index pairs), introduced 10 new quantified variables, introduced 0 case distinctions, treesize of input 89 treesize of output 175 [2022-11-03 02:56:22,420 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:56:22,423 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:56:22,424 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 5 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 327 treesize of output 425 [2022-11-03 02:56:22,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:56:22,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:56:22,513 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 4 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 410 [2022-11-03 02:56:23,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:56:23,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:56:23,116 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:56:23,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:56:23,123 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 303 treesize of output 243 [2022-11-03 02:56:23,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:56:23,156 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:56:23,158 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:56:23,161 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:56:23,182 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 4 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 230 treesize of output 575 [2022-11-03 02:56:23,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:56:23,216 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:56:23,218 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 177 treesize of output 312 [2022-11-03 02:56:23,238 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:56:23,239 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:56:23,240 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 16 [2022-11-03 02:56:23,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:56:23,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:56:23,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:56:23,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:56:23,284 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 4 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 1066 treesize of output 1067 [2022-11-03 02:56:23,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:56:23,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:56:23,600 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:56:23,603 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:56:23,607 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:56:23,611 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:56:23,614 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:56:23,615 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 3 stores, 3 select indices, 3 select index equivalence classes, 9 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 366 treesize of output 298 [2022-11-03 02:56:23,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:56:23,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:56:23,842 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:56:23,844 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 4 stores, 9 select indices, 9 select index equivalence classes, 22 disjoint index pairs (out of 36 index pairs), introduced 13 new quantified variables, introduced 0 case distinctions, treesize of input 166 treesize of output 442 [2022-11-03 02:56:23,938 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-11-03 02:56:23,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:56:23,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:56:23,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:56:23,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:56:23,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:56:23,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:56:23,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:56:23,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:56:23,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:56:23,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:56:23,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:56:23,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:56:23,988 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 3 stores, 3 select indices, 3 select index equivalence classes, 14 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 178 treesize of output 175 [2022-11-03 02:56:24,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:56:24,006 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:56:24,007 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 12 [2022-11-03 02:56:24,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:56:24,258 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 49 [2022-11-03 02:56:24,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:56:24,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:56:24,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:56:24,301 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 4 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 265 treesize of output 692 [2022-11-03 02:56:24,429 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-11-03 02:56:24,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:56:24,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:56:24,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:56:24,448 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:56:24,448 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:56:24,450 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 6 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 780 treesize of output 3021 [2022-11-03 02:56:24,619 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-11-03 02:56:24,640 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 21 [2022-11-03 02:56:24,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:56:24,687 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:56:24,689 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:56:24,697 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:56:24,698 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:56:24,699 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 5 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 415 treesize of output 2273 [2022-11-03 02:56:24,770 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 5 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 1119 treesize of output 5248 [2022-11-03 02:56:24,804 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 16 [2022-11-03 02:56:24,895 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 6 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 3132 treesize of output 3254 [2022-11-03 02:56:24,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:56:25,001 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:56:25,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:56:25,039 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 4 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 95 treesize of output 598 [2022-11-03 02:56:25,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:56:25,611 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:56:25,612 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:56:25,613 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 3 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 985 treesize of output 1278 [2022-11-03 02:56:25,705 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-11-03 02:56:25,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:56:25,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:56:25,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:56:25,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:56:25,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:56:25,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:56:25,774 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:56:25,775 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 3 stores, 3 select indices, 3 select index equivalence classes, 10 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 241 treesize of output 410 [2022-11-03 02:56:25,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:56:25,852 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:56:25,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:56:25,864 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 4 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 403 treesize of output 1222 [2022-11-03 02:56:25,938 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 0 case distinctions, treesize of input 4747 treesize of output 4636 [2022-11-03 02:56:25,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:56:25,957 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 3 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 505 treesize of output 1441 [2022-11-03 02:56:25,972 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 16 [2022-11-03 02:56:26,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:56:26,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:56:26,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:56:26,091 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 5 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 309 treesize of output 229 [2022-11-03 02:56:26,125 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:56:26,126 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:56:26,127 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:56:26,134 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 4 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 403 treesize of output 981 [2022-11-03 02:56:26,165 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 3 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 572 treesize of output 484 [2022-11-03 02:56:26,381 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 02:56:27,340 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3242#(and (= |ULTIMATE.start_main_~CCCELVOL3~0#1| 7) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= ~CELLCOUNT~0 2147483647) (= |ULTIMATE.start_main_~CCCELVOL1~0#1| 1) (<= 1 ~CELLCOUNT~0) (= |ULTIMATE.start_main_~#volArray~0#1.offset| 0) (<= 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_~CCCELVOL2~0#1| 3) (<= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| 1) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (<= 0 |ULTIMATE.start_main_~#volArray~0#1.base|) (<= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (<= 0 |#StackHeapBarrier|) (<= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |#NULL.base| 0))' at error location [2022-11-03 02:56:27,340 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 02:56:27,340 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 02:56:27,340 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16, 16] total 40 [2022-11-03 02:56:27,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483997339] [2022-11-03 02:56:27,340 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 02:56:27,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-11-03 02:56:27,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:56:27,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-11-03 02:56:27,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=2015, Unknown=0, NotChecked=0, Total=2162 [2022-11-03 02:56:27,341 INFO L87 Difference]: Start difference. First operand 35 states and 36 transitions. Second operand has 40 states, 40 states have (on average 2.3) internal successors, (92), 40 states have internal predecessors, (92), 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) [2022-11-03 02:56:37,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:56:37,615 INFO L93 Difference]: Finished difference Result 136 states and 149 transitions. [2022-11-03 02:56:37,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2022-11-03 02:56:37,616 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 2.3) internal successors, (92), 40 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2022-11-03 02:56:37,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:56:37,616 INFO L225 Difference]: With dead ends: 136 [2022-11-03 02:56:37,617 INFO L226 Difference]: Without dead ends: 134 [2022-11-03 02:56:37,621 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 69 SyntacticMatches, 3 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4913 ImplicationChecksByTransitivity, 9.5s TimeCoverageRelationStatistics Valid=1579, Invalid=16243, Unknown=0, NotChecked=0, Total=17822 [2022-11-03 02:56:37,621 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 128 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 930 mSolverCounterSat, 416 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 1346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 416 IncrementalHoareTripleChecker+Valid, 930 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-11-03 02:56:37,621 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 157 Invalid, 1346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [416 Valid, 930 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-11-03 02:56:37,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2022-11-03 02:56:37,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 38. [2022-11-03 02:56:37,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 37 states have (on average 1.054054054054054) internal successors, (39), 37 states have internal predecessors, (39), 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) [2022-11-03 02:56:37,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 39 transitions. [2022-11-03 02:56:37,643 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 39 transitions. Word has length 34 [2022-11-03 02:56:37,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:56:37,643 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 39 transitions. [2022-11-03 02:56:37,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 2.3) internal successors, (92), 40 states have internal predecessors, (92), 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) [2022-11-03 02:56:37,643 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 39 transitions. [2022-11-03 02:56:37,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-11-03 02:56:37,644 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:56:37,644 INFO L195 NwaCegarLoop]: trace histogram [10, 9, 9, 3, 1, 1, 1, 1, 1, 1] [2022-11-03 02:56:37,669 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caff0959-c3a4-4e30-a77a-468d741d96ab/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-03 02:56:37,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caff0959-c3a4-4e30-a77a-468d741d96ab/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-03 02:56:37,847 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:56:37,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:56:37,847 INFO L85 PathProgramCache]: Analyzing trace with hash -1238444858, now seen corresponding path program 11 times [2022-11-03 02:56:37,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:56:37,848 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770554957] [2022-11-03 02:56:37,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:56:37,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:56:37,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:56:38,496 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 101 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:56:38,496 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:56:38,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770554957] [2022-11-03 02:56:38,496 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [770554957] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:56:38,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2046156436] [2022-11-03 02:56:38,496 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-03 02:56:38,497 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:56:38,497 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caff0959-c3a4-4e30-a77a-468d741d96ab/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:56:38,511 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caff0959-c3a4-4e30-a77a-468d741d96ab/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:56:38,530 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caff0959-c3a4-4e30-a77a-468d741d96ab/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-03 02:56:39,154 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2022-11-03 02:56:39,154 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 02:56:39,157 INFO L263 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-03 02:56:39,159 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:56:39,790 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 126 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:56:39,791 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:56:40,128 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 126 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:56:40,128 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2046156436] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:56:40,128 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2134259033] [2022-11-03 02:56:40,130 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-11-03 02:56:40,130 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 02:56:40,130 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 02:56:40,130 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 02:56:40,130 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 02:56:40,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:56:40,176 INFO L356 Elim1Store]: treesize reduction 24, result has 44.2 percent of original size [2022-11-03 02:56:40,177 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 24 treesize of output 40 [2022-11-03 02:56:40,187 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:56:40,213 INFO L356 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-11-03 02:56:40,213 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 32 treesize of output 49 [2022-11-03 02:56:40,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:56:40,249 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 8 select indices, 8 select index equivalence classes, 20 disjoint index pairs (out of 28 index pairs), introduced 10 new quantified variables, introduced 0 case distinctions, treesize of input 89 treesize of output 175 [2022-11-03 02:56:40,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:56:40,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:56:40,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:56:40,359 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 8 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 11 new quantified variables, introduced 0 case distinctions, treesize of input 421 treesize of output 679 [2022-11-03 02:56:40,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:56:40,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:56:40,417 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 275 treesize of output 283 [2022-11-03 02:56:40,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:56:40,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:56:40,494 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 277 treesize of output 285 [2022-11-03 02:56:40,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:56:40,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:56:40,563 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 279 treesize of output 287 [2022-11-03 02:56:40,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:56:40,601 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:56:40,603 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:56:40,637 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 281 treesize of output 289 [2022-11-03 02:56:40,672 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 267 treesize of output 265 [2022-11-03 02:56:40,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:56:40,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:56:40,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:56:40,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:56:40,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:56:40,738 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 4 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 410 [2022-11-03 02:56:43,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:56:43,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:56:43,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:56:43,334 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:56:43,336 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:56:43,338 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:56:43,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:56:43,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:56:43,352 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 4 stores, 3 select indices, 3 select index equivalence classes, 10 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 302 treesize of output 239 [2022-11-03 02:56:43,362 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 15 treesize of output 7 [2022-11-03 02:56:43,407 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 15 treesize of output 7 [2022-11-03 02:56:43,422 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:56:43,426 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:56:43,435 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-11-03 02:56:43,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:56:43,463 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:56:43,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:56:43,505 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 11 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 14 new quantified variables, introduced 0 case distinctions, treesize of input 2153 treesize of output 2488 [2022-11-03 02:56:43,571 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:56:43,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:56:43,574 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:56:43,576 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 3 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 2100 treesize of output 2289 [2022-11-03 02:56:43,636 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1984 treesize of output 1976 [2022-11-03 02:56:43,685 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1976 treesize of output 1968 [2022-11-03 02:56:43,737 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1968 treesize of output 1960 [2022-11-03 02:56:43,820 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1960 treesize of output 1952 [2022-11-03 02:56:43,886 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1952 treesize of output 1944 [2022-11-03 02:56:43,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:56:43,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:56:43,960 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:56:43,962 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 3 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 1944 treesize of output 2133 [2022-11-03 02:56:44,060 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1828 treesize of output 1820 [2022-11-03 02:56:44,537 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 23 treesize of output 15 [2022-11-03 02:56:44,673 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 23 treesize of output 15 [2022-11-03 02:56:44,754 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 23 treesize of output 15 [2022-11-03 02:56:44,891 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 23 treesize of output 15 [2022-11-03 02:56:44,998 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 23 treesize of output 15 [2022-11-03 02:56:45,067 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 23 treesize of output 15 [2022-11-03 02:56:45,426 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 23 treesize of output 15 [2022-11-03 02:56:45,497 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 23 treesize of output 15 [2022-11-03 02:56:45,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:56:45,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:56:45,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:56:45,921 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 166 treesize of output 129 [2022-11-03 02:56:45,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:56:45,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:56:45,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:56:45,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:56:45,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:56:45,996 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 4 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 324 treesize of output 980 [2022-11-03 02:56:46,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:56:46,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:56:46,127 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:56:46,160 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 166 treesize of output 129 [2022-11-03 02:56:46,256 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 146 treesize of output 265 [2022-11-03 02:56:46,308 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 15 treesize of output 7 [2022-11-03 02:56:46,414 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 146 treesize of output 265 [2022-11-03 02:56:46,470 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 15 treesize of output 7 [2022-11-03 02:56:46,777 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 146 treesize of output 265 [2022-11-03 02:56:46,821 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 15 treesize of output 7 [2022-11-03 02:56:46,906 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 146 treesize of output 265 [2022-11-03 02:56:46,965 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 15 treesize of output 7 [2022-11-03 02:56:47,858 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-11-03 02:56:47,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:56:47,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:56:47,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:56:47,939 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 13 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 2093 treesize of output 2725 [2022-11-03 02:56:48,726 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:56:48,877 INFO L244 Elim1Store]: Index analysis took 152 ms [2022-11-03 02:56:48,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:56:48,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:56:48,935 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 12 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 118 treesize of output 504 [2022-11-03 02:56:50,571 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:56:50,572 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:56:50,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:56:50,574 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 137 treesize of output 240 [2022-11-03 02:56:50,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:56:50,588 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:56:50,589 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 16 [2022-11-03 02:56:50,813 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:56:50,814 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 49 [2022-11-03 02:56:50,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:56:50,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:56:50,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:56:50,869 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 4 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 265 treesize of output 692 [2022-11-03 02:56:51,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:56:51,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:56:51,075 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:56:51,078 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 5 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 360 treesize of output 2119 [2022-11-03 02:56:51,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:56:51,121 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 3 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 441 treesize of output 1321 [2022-11-03 02:56:51,142 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 16 [2022-11-03 02:56:51,161 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-11-03 02:56:51,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:56:51,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:56:51,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:56:51,185 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 9 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 12 new quantified variables, introduced 0 case distinctions, treesize of input 813 treesize of output 7358 [2022-11-03 02:56:51,381 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 3240 treesize of output 1770 [2022-11-03 02:56:51,512 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-11-03 02:56:51,746 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 6 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 12657 treesize of output 12779 [2022-11-03 02:56:52,055 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:56:52,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:56:52,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:56:52,304 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 4 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 95 treesize of output 598 [2022-11-03 02:56:53,234 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:56:53,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:56:53,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:56:53,263 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 5 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 301 treesize of output 291 [2022-11-03 02:56:53,302 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 5 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 1172 treesize of output 1182 [2022-11-03 02:56:53,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:56:53,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:56:53,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:56:53,492 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 4 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 330 treesize of output 285 [2022-11-03 02:56:53,666 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-11-03 02:56:53,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:56:53,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:56:53,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:56:53,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:56:53,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:56:53,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:56:53,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:56:53,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:56:53,715 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 3 stores, 3 select indices, 3 select index equivalence classes, 11 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 245 treesize of output 446 [2022-11-03 02:56:53,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:56:53,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:56:53,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:56:53,769 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 4 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 403 treesize of output 1021 [2022-11-03 02:56:54,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:56:54,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:56:54,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:56:54,057 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 5 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 432 treesize of output 2273 [2022-11-03 02:56:54,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:56:54,109 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 4 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 1020 treesize of output 3763 [2022-11-03 02:56:54,140 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 16 [2022-11-03 02:56:54,342 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 02:56:55,172 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3930#(and (= |ULTIMATE.start_main_~CCCELVOL3~0#1| 7) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= ~CELLCOUNT~0 2147483647) (= |ULTIMATE.start_main_~CCCELVOL1~0#1| 1) (<= 1 ~CELLCOUNT~0) (= |ULTIMATE.start_main_~#volArray~0#1.offset| 0) (<= 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_~CCCELVOL2~0#1| 3) (<= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| 1) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (<= 0 |ULTIMATE.start_main_~#volArray~0#1.base|) (<= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (<= 0 |#StackHeapBarrier|) (<= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |#NULL.base| 0))' at error location [2022-11-03 02:56:55,172 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 02:56:55,172 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 02:56:55,172 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 16] total 46 [2022-11-03 02:56:55,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777636016] [2022-11-03 02:56:55,172 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 02:56:55,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-11-03 02:56:55,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:56:55,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-11-03 02:56:55,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=521, Invalid=2235, Unknown=0, NotChecked=0, Total=2756 [2022-11-03 02:56:55,174 INFO L87 Difference]: Start difference. First operand 38 states and 39 transitions. Second operand has 46 states, 46 states have (on average 2.282608695652174) internal successors, (105), 46 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:56:55,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:56:55,684 INFO L93 Difference]: Finished difference Result 72 states and 74 transitions. [2022-11-03 02:56:55,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-03 02:56:55,684 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 2.282608695652174) internal successors, (105), 46 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2022-11-03 02:56:55,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:56:55,685 INFO L225 Difference]: With dead ends: 72 [2022-11-03 02:56:55,685 INFO L226 Difference]: Without dead ends: 39 [2022-11-03 02:56:55,686 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1473 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=752, Invalid=3154, Unknown=0, NotChecked=0, Total=3906 [2022-11-03 02:56:55,686 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 45 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 261 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:56:55,687 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 124 Invalid, 297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 261 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 02:56:55,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2022-11-03 02:56:55,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2022-11-03 02:56:55,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 38 states have (on average 1.0526315789473684) internal successors, (40), 38 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) [2022-11-03 02:56:55,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 40 transitions. [2022-11-03 02:56:55,710 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 40 transitions. Word has length 37 [2022-11-03 02:56:55,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:56:55,710 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 40 transitions. [2022-11-03 02:56:55,710 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 2.282608695652174) internal successors, (105), 46 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:56:55,710 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 40 transitions. [2022-11-03 02:56:55,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-11-03 02:56:55,711 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:56:55,711 INFO L195 NwaCegarLoop]: trace histogram [10, 9, 9, 4, 1, 1, 1, 1, 1, 1] [2022-11-03 02:56:55,743 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caff0959-c3a4-4e30-a77a-468d741d96ab/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-03 02:56:55,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caff0959-c3a4-4e30-a77a-468d741d96ab/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-03 02:56:55,911 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:56:55,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:56:55,912 INFO L85 PathProgramCache]: Analyzing trace with hash -859155038, now seen corresponding path program 12 times [2022-11-03 02:56:55,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:56:55,912 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666205357] [2022-11-03 02:56:55,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:56:55,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:56:55,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:56:57,211 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:56:57,212 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:56:57,212 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666205357] [2022-11-03 02:56:57,212 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [666205357] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:56:57,212 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1748264620] [2022-11-03 02:56:57,212 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-03 02:56:57,212 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:56:57,212 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caff0959-c3a4-4e30-a77a-468d741d96ab/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:56:57,213 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caff0959-c3a4-4e30-a77a-468d741d96ab/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:56:57,214 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caff0959-c3a4-4e30-a77a-468d741d96ab/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-03 02:56:57,362 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-03 02:56:57,362 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 02:56:57,364 INFO L263 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 51 conjunts are in the unsatisfiable core [2022-11-03 02:56:57,367 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:56:57,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:56:57,554 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 43 [2022-11-03 02:56:57,650 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 120 treesize of output 118 [2022-11-03 02:56:57,658 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 31 [2022-11-03 02:56:57,700 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 18 treesize of output 7 [2022-11-03 02:56:57,703 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-03 02:56:57,729 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 3 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 84 treesize of output 138 [2022-11-03 02:56:57,741 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 22 [2022-11-03 02:56:57,745 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-03 02:56:57,755 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 22 [2022-11-03 02:56:57,759 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-03 02:56:57,793 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-03 02:56:57,806 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-03 02:56:57,817 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2022-11-03 02:56:57,823 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 33 treesize of output 21 [2022-11-03 02:56:57,826 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2022-11-03 02:56:57,839 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-03 02:56:58,655 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 91 treesize of output 55 [2022-11-03 02:56:58,696 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:56:58,697 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:56:58,923 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:56:58,923 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 44 treesize of output 54 [2022-11-03 02:56:59,154 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 615 treesize of output 588 [2022-11-03 02:56:59,162 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:56:59,162 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:56:59,173 INFO L356 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2022-11-03 02:56:59,174 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 460 treesize of output 426 [2022-11-03 02:56:59,192 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 13 treesize of output 4 [2022-11-03 02:56:59,307 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:56:59,307 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1748264620] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:56:59,308 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1911329190] [2022-11-03 02:56:59,309 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-11-03 02:56:59,309 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 02:56:59,309 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 02:56:59,309 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 02:56:59,310 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 02:56:59,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:56:59,350 INFO L356 Elim1Store]: treesize reduction 24, result has 44.2 percent of original size [2022-11-03 02:56:59,350 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 24 treesize of output 40 [2022-11-03 02:56:59,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:56:59,386 INFO L356 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-11-03 02:56:59,386 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 32 treesize of output 49 [2022-11-03 02:56:59,421 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:56:59,422 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 8 select indices, 8 select index equivalence classes, 20 disjoint index pairs (out of 28 index pairs), introduced 10 new quantified variables, introduced 0 case distinctions, treesize of input 89 treesize of output 175 [2022-11-03 02:56:59,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:56:59,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:56:59,533 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:56:59,535 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 8 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 11 new quantified variables, introduced 0 case distinctions, treesize of input 477 treesize of output 719 [2022-11-03 02:56:59,571 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:56:59,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:56:59,601 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 345 treesize of output 353 [2022-11-03 02:56:59,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:56:59,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:56:59,677 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 347 treesize of output 355 [2022-11-03 02:56:59,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:56:59,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:56:59,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:56:59,753 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 349 treesize of output 357 [2022-11-03 02:56:59,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:56:59,788 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:56:59,791 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:56:59,827 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 351 treesize of output 359 [2022-11-03 02:56:59,865 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 337 treesize of output 335 [2022-11-03 02:56:59,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:56:59,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:56:59,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:56:59,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:56:59,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:56:59,930 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 4 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 410 [2022-11-03 02:57:02,462 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:57:02,464 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:57:02,477 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-11-03 02:57:02,534 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:57:02,534 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:57:02,541 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-11-03 02:57:02,564 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:02,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:02,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:02,613 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 15 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 18 new quantified variables, introduced 0 case distinctions, treesize of input 2081 treesize of output 2990 [2022-11-03 02:57:02,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:02,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:02,717 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 3 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 2246 treesize of output 2425 [2022-11-03 02:57:02,820 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 2122 treesize of output 2114 [2022-11-03 02:57:02,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:02,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:02,936 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 3 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 2114 treesize of output 2289 [2022-11-03 02:57:03,038 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1982 treesize of output 1974 [2022-11-03 02:57:03,135 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1974 treesize of output 1966 [2022-11-03 02:57:03,239 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1966 treesize of output 1958 [2022-11-03 02:57:03,774 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 23 treesize of output 15 [2022-11-03 02:57:04,251 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 23 treesize of output 15 [2022-11-03 02:57:04,416 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-11-03 02:57:04,682 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 23 treesize of output 15 [2022-11-03 02:57:04,787 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:04,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:04,836 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 4 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 1992 treesize of output 2477 [2022-11-03 02:57:05,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:05,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:05,497 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 284 treesize of output 287 [2022-11-03 02:57:05,507 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 267 treesize of output 275 [2022-11-03 02:57:05,517 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 41 treesize of output 25 [2022-11-03 02:57:06,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:07,513 INFO L244 Elim1Store]: Index analysis took 1346 ms [2022-11-03 02:57:07,518 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 5 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 1634 treesize of output 4082 [2022-11-03 02:57:08,527 INFO L244 Elim1Store]: Index analysis took 412 ms [2022-11-03 02:57:08,540 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 6 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 4896 treesize of output 15001 [2022-11-03 02:57:08,935 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 41 treesize of output 25 [2022-11-03 02:57:09,755 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:09,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:09,777 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:09,783 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:09,799 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:09,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:09,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:09,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:09,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:10,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:10,189 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:10,449 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:10,533 INFO L244 Elim1Store]: Index analysis took 759 ms [2022-11-03 02:57:10,838 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 14 stores, 2 select indices, 2 select index equivalence classes, 14 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 436 treesize of output 873 [2022-11-03 02:57:11,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:11,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:11,097 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:11,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:11,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:11,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:11,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:11,565 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:11,662 INFO L244 Elim1Store]: Index analysis took 569 ms [2022-11-03 02:57:11,896 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 13 stores, 2 select indices, 2 select index equivalence classes, 10 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 422 treesize of output 823 [2022-11-03 02:57:14,891 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 15 treesize of output 7 [2022-11-03 02:57:15,410 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:15,411 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 49 [2022-11-03 02:57:15,449 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:15,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:15,451 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:15,452 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 4 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 265 treesize of output 692 [2022-11-03 02:57:15,585 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-11-03 02:57:15,603 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:15,604 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:15,605 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:15,610 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 7 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 838 treesize of output 4228 [2022-11-03 02:57:15,648 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-11-03 02:57:15,693 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 69 treesize of output 41 [2022-11-03 02:57:15,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:15,783 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:15,787 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:15,804 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 5 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 400 treesize of output 1850 [2022-11-03 02:57:15,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:15,911 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 4 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 732 treesize of output 2863 [2022-11-03 02:57:15,939 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 16 [2022-11-03 02:57:15,967 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 6 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 4633 treesize of output 4755 [2022-11-03 02:57:16,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:16,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:16,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:16,224 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 4 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 95 treesize of output 598 [2022-11-03 02:57:16,766 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-11-03 02:57:16,798 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:16,799 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:16,800 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:16,812 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 3 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 295 treesize of output 453 [2022-11-03 02:57:16,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:16,842 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:16,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:16,861 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 3 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 307 treesize of output 475 [2022-11-03 02:57:16,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:16,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:16,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:16,955 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 5 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 659 treesize of output 2340 [2022-11-03 02:57:17,030 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 6 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 1361 treesize of output 1426 [2022-11-03 02:57:17,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:17,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:17,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:17,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:17,095 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 4 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 431 treesize of output 1053 [2022-11-03 02:57:17,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:17,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:17,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:17,191 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 5 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 81 [2022-11-03 02:57:17,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:17,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:17,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:17,374 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 4 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 770 treesize of output 1763 [2022-11-03 02:57:17,401 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-11-03 02:57:17,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:17,432 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:17,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:17,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:17,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:17,447 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:17,449 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 5 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 299 treesize of output 227 [2022-11-03 02:57:17,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:17,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:17,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:17,496 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 3 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 325 treesize of output 418 [2022-11-03 02:57:17,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:17,544 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 4 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 400 treesize of output 596 [2022-11-03 02:57:17,572 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:17,574 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 4 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 444 treesize of output 1963 [2022-11-03 02:57:17,601 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 16 [2022-11-03 02:57:17,804 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 02:57:18,773 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '4372#(and (= |ULTIMATE.start_main_~CCCELVOL3~0#1| 7) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= ~CELLCOUNT~0 2147483647) (= |ULTIMATE.start_main_~CCCELVOL1~0#1| 1) (<= 1 ~CELLCOUNT~0) (= |ULTIMATE.start_main_~#volArray~0#1.offset| 0) (<= 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_~CCCELVOL2~0#1| 3) (<= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| 1) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (<= 0 |ULTIMATE.start_main_~#volArray~0#1.base|) (<= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (<= 0 |#StackHeapBarrier|) (<= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |#NULL.base| 0))' at error location [2022-11-03 02:57:18,773 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 02:57:18,773 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 02:57:18,773 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 18] total 41 [2022-11-03 02:57:18,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476560356] [2022-11-03 02:57:18,773 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 02:57:18,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-11-03 02:57:18,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:57:18,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-11-03 02:57:18,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=178, Invalid=2078, Unknown=0, NotChecked=0, Total=2256 [2022-11-03 02:57:18,775 INFO L87 Difference]: Start difference. First operand 39 states and 40 transitions. Second operand has 41 states, 41 states have (on average 2.073170731707317) internal successors, (85), 41 states have internal predecessors, (85), 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) [2022-11-03 02:57:28,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:57:28,962 INFO L93 Difference]: Finished difference Result 152 states and 165 transitions. [2022-11-03 02:57:28,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2022-11-03 02:57:28,962 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 2.073170731707317) internal successors, (85), 41 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2022-11-03 02:57:28,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:57:28,963 INFO L225 Difference]: With dead ends: 152 [2022-11-03 02:57:28,963 INFO L226 Difference]: Without dead ends: 150 [2022-11-03 02:57:28,964 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 84 SyntacticMatches, 1 SemanticMatches, 144 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6415 ImplicationChecksByTransitivity, 9.5s TimeCoverageRelationStatistics Valid=1838, Invalid=19332, Unknown=0, NotChecked=0, Total=21170 [2022-11-03 02:57:28,965 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 153 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 869 mSolverCounterSat, 471 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 1340 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 471 IncrementalHoareTripleChecker+Valid, 869 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-11-03 02:57:28,965 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [153 Valid, 158 Invalid, 1340 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [471 Valid, 869 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-11-03 02:57:28,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2022-11-03 02:57:28,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 42. [2022-11-03 02:57:28,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 41 states have (on average 1.048780487804878) internal successors, (43), 41 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:57:28,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 43 transitions. [2022-11-03 02:57:28,985 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 43 transitions. Word has length 38 [2022-11-03 02:57:28,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:57:28,985 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 43 transitions. [2022-11-03 02:57:28,985 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 2.073170731707317) internal successors, (85), 41 states have internal predecessors, (85), 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) [2022-11-03 02:57:28,986 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 43 transitions. [2022-11-03 02:57:28,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-11-03 02:57:28,986 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:57:28,986 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 4, 1, 1, 1, 1, 1, 1] [2022-11-03 02:57:29,009 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caff0959-c3a4-4e30-a77a-468d741d96ab/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-03 02:57:29,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caff0959-c3a4-4e30-a77a-468d741d96ab/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:57:29,191 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:57:29,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:57:29,191 INFO L85 PathProgramCache]: Analyzing trace with hash -1372340268, now seen corresponding path program 13 times [2022-11-03 02:57:29,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:57:29,191 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655320198] [2022-11-03 02:57:29,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:57:29,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:57:29,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:57:30,433 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 165 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:57:30,433 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:57:30,433 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655320198] [2022-11-03 02:57:30,433 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [655320198] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:57:30,434 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2118780720] [2022-11-03 02:57:30,434 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-03 02:57:30,434 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:57:30,434 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caff0959-c3a4-4e30-a77a-468d741d96ab/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:57:30,435 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caff0959-c3a4-4e30-a77a-468d741d96ab/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:57:30,436 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caff0959-c3a4-4e30-a77a-468d741d96ab/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-03 02:57:30,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:57:30,614 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 48 conjunts are in the unsatisfiable core [2022-11-03 02:57:30,617 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:57:30,787 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:30,787 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 43 [2022-11-03 02:57:30,830 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 0 case distinctions, treesize of input 65 treesize of output 70 [2022-11-03 02:57:30,866 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-03 02:57:30,869 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 3 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 93 [2022-11-03 02:57:30,876 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 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 28 treesize of output 58 [2022-11-03 02:57:30,938 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 0 case distinctions, treesize of input 16 treesize of output 1 [2022-11-03 02:57:30,956 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 0 case distinctions, treesize of input 16 treesize of output 1 [2022-11-03 02:57:30,969 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 45 treesize of output 29 [2022-11-03 02:57:30,980 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 18 treesize of output 7 [2022-11-03 02:57:30,982 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-03 02:57:31,886 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 91 treesize of output 55 [2022-11-03 02:57:31,931 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 165 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:57:31,931 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:57:32,593 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:57:32,593 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 44 treesize of output 54 [2022-11-03 02:57:32,663 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 181 treesize of output 164 [2022-11-03 02:57:32,665 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:57:32,674 INFO L356 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2022-11-03 02:57:32,674 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 140 treesize of output 126 [2022-11-03 02:57:32,680 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 13 treesize of output 4 [2022-11-03 02:57:32,827 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 165 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:57:32,828 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2118780720] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:57:32,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [255478471] [2022-11-03 02:57:32,829 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-11-03 02:57:32,829 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 02:57:32,829 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 02:57:32,829 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 02:57:32,829 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 02:57:32,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:32,874 INFO L356 Elim1Store]: treesize reduction 24, result has 44.2 percent of original size [2022-11-03 02:57:32,874 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 24 treesize of output 40 [2022-11-03 02:57:32,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:32,911 INFO L356 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-11-03 02:57:32,911 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 32 treesize of output 49 [2022-11-03 02:57:32,946 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:32,948 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 8 select indices, 8 select index equivalence classes, 20 disjoint index pairs (out of 28 index pairs), introduced 10 new quantified variables, introduced 0 case distinctions, treesize of input 89 treesize of output 175 [2022-11-03 02:57:33,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:33,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:33,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:33,049 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 8 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 11 new quantified variables, introduced 0 case distinctions, treesize of input 365 treesize of output 639 [2022-11-03 02:57:33,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:33,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:33,125 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 205 treesize of output 213 [2022-11-03 02:57:33,160 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:33,167 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:33,198 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 207 treesize of output 215 [2022-11-03 02:57:33,241 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:33,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:33,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:33,281 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 209 treesize of output 217 [2022-11-03 02:57:33,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:33,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:33,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:33,359 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 211 treesize of output 219 [2022-11-03 02:57:33,409 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 197 treesize of output 195 [2022-11-03 02:57:33,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:33,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:33,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:33,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:33,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:33,473 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 4 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 410 [2022-11-03 02:57:36,024 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:36,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:36,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:36,074 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 8 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 11 new quantified variables, introduced 0 case distinctions, treesize of input 2046 treesize of output 2139 [2022-11-03 02:57:36,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:36,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:36,111 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:36,114 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 3 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 1926 treesize of output 2115 [2022-11-03 02:57:36,162 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1810 treesize of output 1802 [2022-11-03 02:57:36,203 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1802 treesize of output 1794 [2022-11-03 02:57:36,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:36,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:36,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:36,269 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 3 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 1794 treesize of output 1979 [2022-11-03 02:57:36,346 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1670 treesize of output 1662 [2022-11-03 02:57:36,412 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1662 treesize of output 1654 [2022-11-03 02:57:36,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:36,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:36,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:36,489 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 3 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 1654 treesize of output 1843 [2022-11-03 02:57:36,584 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1538 treesize of output 1530 [2022-11-03 02:57:36,681 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1530 treesize of output 1522 [2022-11-03 02:57:36,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:36,770 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:36,775 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:36,777 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 3 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 1522 treesize of output 1711 [2022-11-03 02:57:37,388 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 23 treesize of output 15 [2022-11-03 02:57:37,441 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-11-03 02:57:37,575 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:37,577 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:37,612 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 1216 treesize of output 1200 [2022-11-03 02:57:37,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:37,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:37,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:37,820 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 6 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 1065 treesize of output 1188 [2022-11-03 02:57:37,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:38,000 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 210 treesize of output 281 [2022-11-03 02:57:38,060 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 23 treesize of output 15 [2022-11-03 02:57:38,130 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 267 treesize of output 275 [2022-11-03 02:57:38,208 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 41 treesize of output 25 [2022-11-03 02:57:38,391 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-11-03 02:57:38,445 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 155 treesize of output 123 [2022-11-03 02:57:38,462 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 146 treesize of output 265 [2022-11-03 02:57:38,475 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 15 treesize of output 7 [2022-11-03 02:57:38,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:38,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:38,511 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 4 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 200 treesize of output 980 [2022-11-03 02:57:38,543 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:38,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:38,549 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 4 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 483 treesize of output 1847 [2022-11-03 02:57:38,568 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:38,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:38,569 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 16 [2022-11-03 02:57:38,644 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 37 treesize of output 21 [2022-11-03 02:57:38,690 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:38,692 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:38,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:38,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:38,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:38,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:38,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:38,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:38,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:38,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:38,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:38,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:38,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:38,721 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:38,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:38,723 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:38,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:38,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:38,745 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 6 stores, 3 select indices, 3 select index equivalence classes, 20 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 319 treesize of output 261 [2022-11-03 02:57:38,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:38,847 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:38,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:38,867 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 10 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 13 new quantified variables, introduced 0 case distinctions, treesize of input 1140 treesize of output 1515 [2022-11-03 02:57:38,906 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1112 treesize of output 1104 [2022-11-03 02:57:38,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:38,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:38,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:38,952 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 3 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 1104 treesize of output 1289 [2022-11-03 02:57:39,279 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 23 treesize of output 15 [2022-11-03 02:57:39,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:39,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:39,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:39,405 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:57:39,451 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 262 treesize of output 273 [2022-11-03 02:57:39,562 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 290 treesize of output 289 [2022-11-03 02:57:39,624 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 41 treesize of output 25 [2022-11-03 02:57:40,243 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:57:40,244 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:57:40,252 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-11-03 02:57:40,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:40,393 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 49 [2022-11-03 02:57:40,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:40,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:40,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:40,436 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 4 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 265 treesize of output 692 [2022-11-03 02:57:40,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:40,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:40,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:40,471 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:40,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:40,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:40,477 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:40,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:40,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:40,482 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 3 stores, 3 select indices, 3 select index equivalence classes, 12 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 227 treesize of output 406 [2022-11-03 02:57:40,502 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-11-03 02:57:40,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:40,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:40,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:40,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:40,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:40,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:40,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:40,534 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:40,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:40,536 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 3 stores, 3 select indices, 3 select index equivalence classes, 12 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 227 treesize of output 406 [2022-11-03 02:57:40,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:40,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:40,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:40,746 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 5 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 508 treesize of output 3085 [2022-11-03 02:57:40,809 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:40,815 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 6 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 1314 treesize of output 8356 [2022-11-03 02:57:40,855 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 16 [2022-11-03 02:57:40,878 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 7 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 2026 treesize of output 2198 [2022-11-03 02:57:40,932 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:40,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:40,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:40,965 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 4 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 95 treesize of output 598 [2022-11-03 02:57:41,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:41,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:41,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:41,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:41,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:41,719 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:57:41,721 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:41,722 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:57:41,723 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 3 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 245 treesize of output 486 [2022-11-03 02:57:41,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:41,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:41,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:41,763 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:57:41,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:41,766 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:57:41,767 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 4 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 340 treesize of output 943 [2022-11-03 02:57:41,833 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-11-03 02:57:41,882 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-11-03 02:57:41,897 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-11-03 02:57:41,924 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 9 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 10 new quantified variables, introduced 0 case distinctions, treesize of input 3634 treesize of output 3854 [2022-11-03 02:57:42,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:42,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:42,661 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:42,678 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 4 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 562 treesize of output 865 [2022-11-03 02:57:42,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:42,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:42,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:42,848 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 8 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 97 treesize of output 114 [2022-11-03 02:57:42,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:42,924 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 8 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 97 treesize of output 114 [2022-11-03 02:57:42,997 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 16 [2022-11-03 02:57:43,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:43,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:43,062 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:43,071 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 5 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 432 treesize of output 2273 [2022-11-03 02:57:43,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:43,119 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 5 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 991 treesize of output 5008 [2022-11-03 02:57:43,147 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 16 [2022-11-03 02:57:43,193 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:43,195 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:43,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:43,206 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 5 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 432 treesize of output 2273 [2022-11-03 02:57:43,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:43,255 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 5 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 991 treesize of output 5008 [2022-11-03 02:57:43,285 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 16 [2022-11-03 02:57:43,465 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 02:57:44,511 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '5142#(and (= |ULTIMATE.start_main_~CCCELVOL3~0#1| 7) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= ~CELLCOUNT~0 2147483647) (= |ULTIMATE.start_main_~CCCELVOL1~0#1| 1) (<= 1 ~CELLCOUNT~0) (= |ULTIMATE.start_main_~#volArray~0#1.offset| 0) (<= 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_~CCCELVOL2~0#1| 3) (<= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| 1) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (<= 0 |ULTIMATE.start_main_~#volArray~0#1.base|) (<= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (<= 0 |#StackHeapBarrier|) (<= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |#NULL.base| 0))' at error location [2022-11-03 02:57:44,511 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 02:57:44,511 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 02:57:44,511 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 19] total 54 [2022-11-03 02:57:44,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852245455] [2022-11-03 02:57:44,512 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 02:57:44,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2022-11-03 02:57:44,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:57:44,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2022-11-03 02:57:44,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=218, Invalid=3442, Unknown=0, NotChecked=0, Total=3660 [2022-11-03 02:57:44,513 INFO L87 Difference]: Start difference. First operand 42 states and 43 transitions. Second operand has 54 states, 54 states have (on average 2.185185185185185) internal successors, (118), 54 states have internal predecessors, (118), 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) [2022-11-03 02:58:05,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:58:05,227 INFO L93 Difference]: Finished difference Result 188 states and 203 transitions. [2022-11-03 02:58:05,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 126 states. [2022-11-03 02:58:05,227 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 2.185185185185185) internal successors, (118), 54 states have internal predecessors, (118), 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 41 [2022-11-03 02:58:05,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:58:05,228 INFO L225 Difference]: With dead ends: 188 [2022-11-03 02:58:05,229 INFO L226 Difference]: Without dead ends: 186 [2022-11-03 02:58:05,231 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 81 SyntacticMatches, 1 SemanticMatches, 181 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8931 ImplicationChecksByTransitivity, 19.1s TimeCoverageRelationStatistics Valid=2683, Invalid=30623, Unknown=0, NotChecked=0, Total=33306 [2022-11-03 02:58:05,232 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 250 mSDsluCounter, 214 mSDsCounter, 0 mSdLazyCounter, 1338 mSolverCounterSat, 747 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 250 SdHoareTripleChecker+Valid, 217 SdHoareTripleChecker+Invalid, 2085 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 747 IncrementalHoareTripleChecker+Valid, 1338 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-11-03 02:58:05,232 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [250 Valid, 217 Invalid, 2085 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [747 Valid, 1338 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2022-11-03 02:58:05,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2022-11-03 02:58:05,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 45. [2022-11-03 02:58:05,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 44 states have (on average 1.0454545454545454) internal successors, (46), 44 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:58:05,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 46 transitions. [2022-11-03 02:58:05,263 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 46 transitions. Word has length 41 [2022-11-03 02:58:05,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:58:05,264 INFO L495 AbstractCegarLoop]: Abstraction has 45 states and 46 transitions. [2022-11-03 02:58:05,264 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 2.185185185185185) internal successors, (118), 54 states have internal predecessors, (118), 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) [2022-11-03 02:58:05,264 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 46 transitions. [2022-11-03 02:58:05,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-11-03 02:58:05,265 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:58:05,265 INFO L195 NwaCegarLoop]: trace histogram [12, 11, 11, 4, 1, 1, 1, 1, 1, 1] [2022-11-03 02:58:05,286 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caff0959-c3a4-4e30-a77a-468d741d96ab/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-03 02:58:05,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caff0959-c3a4-4e30-a77a-468d741d96ab/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-03 02:58:05,467 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:58:05,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:58:05,467 INFO L85 PathProgramCache]: Analyzing trace with hash 410046562, now seen corresponding path program 14 times [2022-11-03 02:58:05,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:58:05,467 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769921256] [2022-11-03 02:58:05,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:58:05,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:58:05,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:58:06,696 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 0 proven. 197 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:58:06,696 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:58:06,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769921256] [2022-11-03 02:58:06,696 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [769921256] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:58:06,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [393264768] [2022-11-03 02:58:06,697 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-03 02:58:06,697 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:58:06,697 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caff0959-c3a4-4e30-a77a-468d741d96ab/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:58:06,699 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caff0959-c3a4-4e30-a77a-468d741d96ab/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:58:06,707 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caff0959-c3a4-4e30-a77a-468d741d96ab/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-03 02:58:08,103 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2022-11-03 02:58:08,103 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 02:58:08,108 INFO L263 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 46 conjunts are in the unsatisfiable core [2022-11-03 02:58:08,111 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:58:08,148 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:58:08,148 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 49 [2022-11-03 02:58:08,157 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 10 [2022-11-03 02:58:08,160 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 3 [2022-11-03 02:58:08,175 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 3 [2022-11-03 02:58:10,016 INFO L356 Elim1Store]: treesize reduction 12, result has 63.6 percent of original size [2022-11-03 02:58:10,016 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 88 treesize of output 78 [2022-11-03 02:58:10,079 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 0 proven. 197 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:58:10,080 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:58:10,918 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:58:10,918 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 44 treesize of output 54 [2022-11-03 02:58:10,939 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 54 treesize of output 39 [2022-11-03 02:58:10,947 INFO L356 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2022-11-03 02:58:10,947 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 39 treesize of output 29 [2022-11-03 02:58:10,953 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 13 treesize of output 4 [2022-11-03 02:58:11,124 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 0 proven. 197 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:58:11,125 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [393264768] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:58:11,125 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1356097304] [2022-11-03 02:58:11,126 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-11-03 02:58:11,126 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 02:58:11,126 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 02:58:11,126 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 02:58:11,126 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 02:58:11,144 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:58:11,173 INFO L356 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-11-03 02:58:11,173 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 32 treesize of output 49 [2022-11-03 02:58:11,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:58:11,183 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 32 [2022-11-03 02:58:11,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:58:11,229 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 8 select indices, 8 select index equivalence classes, 20 disjoint index pairs (out of 28 index pairs), introduced 10 new quantified variables, introduced 0 case distinctions, treesize of input 99 treesize of output 185 [2022-11-03 02:58:11,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:58:11,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:58:11,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:58:11,371 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 8 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 11 new quantified variables, introduced 0 case distinctions, treesize of input 513 treesize of output 767 [2022-11-03 02:58:11,440 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 341 treesize of output 349 [2022-11-03 02:58:11,517 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 343 treesize of output 351 [2022-11-03 02:58:11,596 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 345 treesize of output 353 [2022-11-03 02:58:11,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:58:11,678 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 347 treesize of output 355 [2022-11-03 02:58:11,724 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 327 treesize of output 320 [2022-11-03 02:58:11,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:58:11,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:58:11,763 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:58:11,801 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 4 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 95 treesize of output 598 [2022-11-03 02:58:12,685 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:58:12,686 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:58:12,695 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-11-03 02:58:12,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:58:12,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:58:12,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:58:12,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:58:12,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:58:12,753 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:58:12,755 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:58:12,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:58:12,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:58:12,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:58:12,763 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:58:12,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:58:12,770 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:58:12,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:58:12,777 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:58:12,779 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:58:12,784 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:58:12,787 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:58:12,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:58:12,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:58:12,794 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:58:12,798 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:58:12,800 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:58:12,806 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:58:12,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:58:12,813 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 6 stores, 3 select indices, 3 select index equivalence classes, 27 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 362 treesize of output 388 [2022-11-03 02:58:12,937 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 21 treesize of output 7 [2022-11-03 02:58:12,968 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:58:12,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:58:12,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:58:12,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:58:12,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:58:12,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:58:12,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:58:13,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:58:13,003 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 12 stores, 3 select indices, 3 select index equivalence classes, 10 disjoint index pairs (out of 3 index pairs), introduced 12 new quantified variables, introduced 0 case distinctions, treesize of input 1928 treesize of output 2476 [2022-11-03 02:58:13,134 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1921 treesize of output 1907 [2022-11-03 02:58:13,184 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1907 treesize of output 1893 [2022-11-03 02:58:21,253 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 02:58:21,943 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '6030#(and (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 ~CELLCOUNT~0) (<= 0 |ULTIMATE.start_main_~i~0#1|) (<= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| 1) (<= 0 |ULTIMATE.start___VERIFIER_assert_#in~cond#1|))' at error location [2022-11-03 02:58:21,943 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 02:58:21,944 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 02:58:21,944 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 20] total 52 [2022-11-03 02:58:21,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702949258] [2022-11-03 02:58:21,944 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 02:58:21,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-11-03 02:58:21,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:58:21,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-11-03 02:58:21,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=187, Invalid=3119, Unknown=0, NotChecked=0, Total=3306 [2022-11-03 02:58:21,946 INFO L87 Difference]: Start difference. First operand 45 states and 46 transitions. Second operand has 52 states, 52 states have (on average 2.3461538461538463) internal successors, (122), 52 states have internal predecessors, (122), 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) [2022-11-03 02:58:25,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:58:25,062 INFO L93 Difference]: Finished difference Result 84 states and 86 transitions. [2022-11-03 02:58:25,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-03 02:58:25,062 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 2.3461538461538463) internal successors, (122), 52 states have internal predecessors, (122), 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 44 [2022-11-03 02:58:25,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:58:25,063 INFO L225 Difference]: With dead ends: 84 [2022-11-03 02:58:25,063 INFO L226 Difference]: Without dead ends: 82 [2022-11-03 02:58:25,064 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 94 SyntacticMatches, 12 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1251 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=332, Invalid=5070, Unknown=0, NotChecked=0, Total=5402 [2022-11-03 02:58:25,065 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 40 mSDsluCounter, 374 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 385 SdHoareTripleChecker+Invalid, 280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 52 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-03 02:58:25,066 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 385 Invalid, 280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 204 Invalid, 0 Unknown, 52 Unchecked, 0.8s Time] [2022-11-03 02:58:25,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2022-11-03 02:58:25,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 49. [2022-11-03 02:58:25,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 48 states have (on average 1.0625) internal successors, (51), 48 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:58:25,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 51 transitions. [2022-11-03 02:58:25,093 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 51 transitions. Word has length 44 [2022-11-03 02:58:25,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:58:25,093 INFO L495 AbstractCegarLoop]: Abstraction has 49 states and 51 transitions. [2022-11-03 02:58:25,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 2.3461538461538463) internal successors, (122), 52 states have internal predecessors, (122), 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) [2022-11-03 02:58:25,093 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 51 transitions. [2022-11-03 02:58:25,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-11-03 02:58:25,094 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:58:25,094 INFO L195 NwaCegarLoop]: trace histogram [12, 11, 11, 5, 1, 1, 1, 1, 1, 1] [2022-11-03 02:58:25,116 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caff0959-c3a4-4e30-a77a-468d741d96ab/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2022-11-03 02:58:25,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caff0959-c3a4-4e30-a77a-468d741d96ab/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-03 02:58:25,299 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:58:25,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:58:25,299 INFO L85 PathProgramCache]: Analyzing trace with hash 1231544326, now seen corresponding path program 15 times [2022-11-03 02:58:25,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:58:25,299 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501652660] [2022-11-03 02:58:25,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:58:25,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:58:25,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:58:25,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-03 02:58:25,971 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.InterpolantChecker.checkInductivity(InterpolantChecker.java:409) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.walkLeafNode(Interpolator.java:383) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator$ProofTreeWalker.walk(Interpolator.java:154) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:115) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:106) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.interpolate(Interpolator.java:260) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.getInterpolants(Interpolator.java:237) at de.uni_freiburg.informatik.ultimate.smtinterpol.smtlib2.SMTInterpol.getInterpolants(SMTInterpol.java:848) at de.uni_freiburg.informatik.ultimate.smtinterpol.smtlib2.SMTInterpol.getInterpolants(SMTInterpol.java:773) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:343) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:343) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.getInterpolants(ManagedScript.java:198) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.computeCraigInterpolants(NestedInterpolantsBuilder.java:282) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.(NestedInterpolantsBuilder.java:165) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsTree(InterpolatingTraceCheckCraig.java:296) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolants(InterpolatingTraceCheckCraig.java:232) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:97) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:79) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:209) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:121) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:336) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:262) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-11-03 02:58:25,979 INFO L158 Benchmark]: Toolchain (without parser) took 490408.60ms. Allocated memory was 111.1MB in the beginning and 775.9MB in the end (delta: 664.8MB). Free memory was 74.5MB in the beginning and 553.3MB in the end (delta: -478.8MB). Peak memory consumption was 482.5MB. Max. memory is 16.1GB. [2022-11-03 02:58:25,980 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 111.1MB. Free memory is still 90.6MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-03 02:58:25,980 INFO L158 Benchmark]: CACSL2BoogieTranslator took 303.75ms. Allocated memory is still 111.1MB. Free memory was 74.3MB in the beginning and 87.3MB in the end (delta: -13.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-03 02:58:25,980 INFO L158 Benchmark]: Boogie Procedure Inliner took 38.12ms. Allocated memory is still 111.1MB. Free memory was 87.3MB in the beginning and 85.6MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-03 02:58:25,980 INFO L158 Benchmark]: Boogie Preprocessor took 27.93ms. Allocated memory is still 111.1MB. Free memory was 85.6MB in the beginning and 84.2MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-03 02:58:25,980 INFO L158 Benchmark]: RCFGBuilder took 558.92ms. Allocated memory is still 111.1MB. Free memory was 84.2MB in the beginning and 67.8MB in the end (delta: 16.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-11-03 02:58:25,980 INFO L158 Benchmark]: TraceAbstraction took 489473.75ms. Allocated memory was 111.1MB in the beginning and 775.9MB in the end (delta: 664.8MB). Free memory was 67.1MB in the beginning and 553.3MB in the end (delta: -486.1MB). Peak memory consumption was 476.7MB. Max. memory is 16.1GB. [2022-11-03 02:58:25,981 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 111.1MB. Free memory is still 90.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 303.75ms. Allocated memory is still 111.1MB. Free memory was 74.3MB in the beginning and 87.3MB in the end (delta: -13.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 38.12ms. Allocated memory is still 111.1MB. Free memory was 87.3MB in the beginning and 85.6MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 27.93ms. Allocated memory is still 111.1MB. Free memory was 85.6MB in the beginning and 84.2MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 558.92ms. Allocated memory is still 111.1MB. Free memory was 84.2MB in the beginning and 67.8MB in the end (delta: 16.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 489473.75ms. Allocated memory was 111.1MB in the beginning and 775.9MB in the end (delta: 664.8MB). Free memory was 67.1MB in the beginning and 553.3MB in the end (delta: -486.1MB). Peak memory consumption was 476.7MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: null de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: null: de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.InterpolantChecker.checkInductivity(InterpolantChecker.java:409) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2022-11-03 02:58:26,005 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caff0959-c3a4-4e30-a77a-468d741d96ab/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### 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_caff0959-c3a4-4e30-a77a-468d741d96ab/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caff0959-c3a4-4e30-a77a-468d741d96ab/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caff0959-c3a4-4e30-a77a-468d741d96ab/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caff0959-c3a4-4e30-a77a-468d741d96ab/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-tiling/pr3.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caff0959-c3a4-4e30-a77a-468d741d96ab/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caff0959-c3a4-4e30-a77a-468d741d96ab/bin/utaipan-7li7fVZpFI --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 73efddcda095c52d9900d13088d1ec70520de6007541f46343a568e878cf2ed4 --- 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-5e519f3 [2022-11-03 02:58:28,367 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 02:58:28,370 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 02:58:28,431 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 02:58:28,431 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 02:58:28,432 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 02:58:28,434 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 02:58:28,435 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 02:58:28,437 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 02:58:28,438 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 02:58:28,439 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 02:58:28,440 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 02:58:28,441 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 02:58:28,442 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 02:58:28,443 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 02:58:28,444 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 02:58:28,445 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 02:58:28,446 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 02:58:28,447 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 02:58:28,449 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 02:58:28,451 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 02:58:28,452 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 02:58:28,453 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 02:58:28,454 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 02:58:28,458 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 02:58:28,459 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 02:58:28,459 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 02:58:28,460 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 02:58:28,460 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 02:58:28,461 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 02:58:28,462 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 02:58:28,463 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 02:58:28,463 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 02:58:28,464 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 02:58:28,465 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 02:58:28,466 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 02:58:28,466 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 02:58:28,467 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 02:58:28,467 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 02:58:28,468 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 02:58:28,468 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 02:58:28,469 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caff0959-c3a4-4e30-a77a-468d741d96ab/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2022-11-03 02:58:28,495 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 02:58:28,495 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 02:58:28,496 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 02:58:28,496 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 02:58:28,497 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 02:58:28,497 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 02:58:28,497 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 02:58:28,497 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 02:58:28,498 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 02:58:28,498 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 02:58:28,498 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 02:58:28,498 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 02:58:28,499 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 02:58:28,499 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-03 02:58:28,499 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-03 02:58:28,499 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 02:58:28,500 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 02:58:28,500 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 02:58:28,500 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 02:58:28,500 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-03 02:58:28,501 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-03 02:58:28,501 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-03 02:58:28,501 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-03 02:58:28,501 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 02:58:28,501 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 02:58:28,502 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 02:58:28,502 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 02:58:28,502 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-03 02:58:28,502 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 02:58:28,502 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:58:28,503 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 02:58:28,503 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 02:58:28,503 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 02:58:28,503 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-03 02:58:28,504 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-03 02:58:28,504 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 02:58:28,504 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 02:58:28,504 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-03 02:58:28,504 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_caff0959-c3a4-4e30-a77a-468d741d96ab/bin/utaipan-7li7fVZpFI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caff0959-c3a4-4e30-a77a-468d741d96ab/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 73efddcda095c52d9900d13088d1ec70520de6007541f46343a568e878cf2ed4 [2022-11-03 02:58:28,869 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 02:58:28,888 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 02:58:28,891 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 02:58:28,892 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 02:58:28,893 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 02:58:28,895 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caff0959-c3a4-4e30-a77a-468d741d96ab/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/array-tiling/pr3.c [2022-11-03 02:58:28,965 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caff0959-c3a4-4e30-a77a-468d741d96ab/bin/utaipan-7li7fVZpFI/data/5dadf2132/42821ab3b6e74a4f92d961add6207ca3/FLAGeb7813d4a [2022-11-03 02:58:29,420 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 02:58:29,423 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caff0959-c3a4-4e30-a77a-468d741d96ab/sv-benchmarks/c/array-tiling/pr3.c [2022-11-03 02:58:29,429 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caff0959-c3a4-4e30-a77a-468d741d96ab/bin/utaipan-7li7fVZpFI/data/5dadf2132/42821ab3b6e74a4f92d961add6207ca3/FLAGeb7813d4a [2022-11-03 02:58:29,802 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caff0959-c3a4-4e30-a77a-468d741d96ab/bin/utaipan-7li7fVZpFI/data/5dadf2132/42821ab3b6e74a4f92d961add6207ca3 [2022-11-03 02:58:29,805 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 02:58:29,806 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 02:58:29,810 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 02:58:29,811 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 02:58:29,814 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 02:58:29,816 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:58:29" (1/1) ... [2022-11-03 02:58:29,817 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50fd55ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:58:29, skipping insertion in model container [2022-11-03 02:58:29,817 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:58:29" (1/1) ... [2022-11-03 02:58:29,824 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 02:58:29,846 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 02:58:29,981 WARN L230 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_caff0959-c3a4-4e30-a77a-468d741d96ab/sv-benchmarks/c/array-tiling/pr3.c[394,407] [2022-11-03 02:58:30,009 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:58:30,021 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 02:58:30,070 WARN L230 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_caff0959-c3a4-4e30-a77a-468d741d96ab/sv-benchmarks/c/array-tiling/pr3.c[394,407] [2022-11-03 02:58:30,082 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:58:30,095 INFO L208 MainTranslator]: Completed translation [2022-11-03 02:58:30,096 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:58:30 WrapperNode [2022-11-03 02:58:30,096 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 02:58:30,097 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 02:58:30,097 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 02:58:30,097 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 02:58:30,104 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:58:30" (1/1) ... [2022-11-03 02:58:30,113 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:58:30" (1/1) ... [2022-11-03 02:58:30,132 INFO L138 Inliner]: procedures = 17, calls = 26, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 78 [2022-11-03 02:58:30,132 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 02:58:30,133 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 02:58:30,133 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 02:58:30,133 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 02:58:30,142 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:58:30" (1/1) ... [2022-11-03 02:58:30,142 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:58:30" (1/1) ... [2022-11-03 02:58:30,145 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:58:30" (1/1) ... [2022-11-03 02:58:30,145 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:58:30" (1/1) ... [2022-11-03 02:58:30,151 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:58:30" (1/1) ... [2022-11-03 02:58:30,155 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:58:30" (1/1) ... [2022-11-03 02:58:30,156 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:58:30" (1/1) ... [2022-11-03 02:58:30,157 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:58:30" (1/1) ... [2022-11-03 02:58:30,159 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 02:58:30,160 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 02:58:30,160 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 02:58:30,161 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 02:58:30,161 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:58:30" (1/1) ... [2022-11-03 02:58:30,167 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:58:30,179 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caff0959-c3a4-4e30-a77a-468d741d96ab/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:58:30,192 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caff0959-c3a4-4e30-a77a-468d741d96ab/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 02:58:30,200 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caff0959-c3a4-4e30-a77a-468d741d96ab/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 02:58:30,236 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 02:58:30,236 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-03 02:58:30,237 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-03 02:58:30,237 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-03 02:58:30,237 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 02:58:30,237 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 02:58:30,237 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-03 02:58:30,237 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-03 02:58:30,327 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 02:58:30,329 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 02:58:30,740 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 02:58:30,746 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 02:58:30,746 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-03 02:58:30,748 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:58:30 BoogieIcfgContainer [2022-11-03 02:58:30,749 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 02:58:30,751 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 02:58:30,751 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 02:58:30,754 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 02:58:30,754 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 02:58:29" (1/3) ... [2022-11-03 02:58:30,755 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3efc5354 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:58:30, skipping insertion in model container [2022-11-03 02:58:30,766 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:58:30" (2/3) ... [2022-11-03 02:58:30,767 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3efc5354 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:58:30, skipping insertion in model container [2022-11-03 02:58:30,767 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:58:30" (3/3) ... [2022-11-03 02:58:30,779 INFO L112 eAbstractionObserver]: Analyzing ICFG pr3.c [2022-11-03 02:58:30,797 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 02:58:30,797 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 02:58:30,862 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 02:58:30,869 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;@60df5fd6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 02:58:30,869 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 02:58:30,874 INFO L276 IsEmpty]: Start isEmpty. Operand has 25 states, 23 states have (on average 1.565217391304348) internal successors, (36), 24 states have internal predecessors, (36), 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) [2022-11-03 02:58:30,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-03 02:58:30,880 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:58:30,881 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:58:30,881 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:58:30,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:58:30,887 INFO L85 PathProgramCache]: Analyzing trace with hash -405965127, now seen corresponding path program 1 times [2022-11-03 02:58:30,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:58:30,900 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [567311038] [2022-11-03 02:58:30,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:58:30,900 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:58:30,901 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caff0959-c3a4-4e30-a77a-468d741d96ab/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:58:30,907 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caff0959-c3a4-4e30-a77a-468d741d96ab/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:58:30,927 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caff0959-c3a4-4e30-a77a-468d741d96ab/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-03 02:58:31,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:58:31,056 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-03 02:58:31,060 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:58:31,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:58:31,086 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:58:31,087 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:58:31,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [567311038] [2022-11-03 02:58:31,089 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [567311038] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:58:31,089 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:58:31,090 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 02:58:31,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814395163] [2022-11-03 02:58:31,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:58:31,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-03 02:58:31,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:58:31,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-03 02:58:31,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-03 02:58:31,144 INFO L87 Difference]: Start difference. First operand has 25 states, 23 states have (on average 1.565217391304348) internal successors, (36), 24 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:58:31,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:58:31,161 INFO L93 Difference]: Finished difference Result 45 states and 64 transitions. [2022-11-03 02:58:31,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-03 02:58:31,163 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-03 02:58:31,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:58:31,170 INFO L225 Difference]: With dead ends: 45 [2022-11-03 02:58:31,170 INFO L226 Difference]: Without dead ends: 20 [2022-11-03 02:58:31,173 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-03 02:58:31,179 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 02:58:31,180 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 02:58:31,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2022-11-03 02:58:31,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2022-11-03 02:58:31,210 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) [2022-11-03 02:58:31,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 25 transitions. [2022-11-03 02:58:31,214 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 25 transitions. Word has length 13 [2022-11-03 02:58:31,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:58:31,218 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 25 transitions. [2022-11-03 02:58:31,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:58:31,219 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 25 transitions. [2022-11-03 02:58:31,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-03 02:58:31,220 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:58:31,220 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:58:31,238 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caff0959-c3a4-4e30-a77a-468d741d96ab/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-03 02:58:31,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caff0959-c3a4-4e30-a77a-468d741d96ab/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:58:31,434 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:58:31,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:58:31,435 INFO L85 PathProgramCache]: Analyzing trace with hash 274093243, now seen corresponding path program 1 times [2022-11-03 02:58:31,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:58:31,436 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [79719636] [2022-11-03 02:58:31,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:58:31,436 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:58:31,436 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caff0959-c3a4-4e30-a77a-468d741d96ab/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:58:31,437 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caff0959-c3a4-4e30-a77a-468d741d96ab/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:58:31,449 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caff0959-c3a4-4e30-a77a-468d741d96ab/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-03 02:58:31,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:58:31,534 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 02:58:31,536 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:58:32,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:58:32,221 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:58:32,221 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:58:32,221 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [79719636] [2022-11-03 02:58:32,221 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [79719636] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:58:32,222 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:58:32,222 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:58:32,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792242976] [2022-11-03 02:58:32,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:58:32,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:58:32,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:58:32,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:58:32,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:58:32,225 INFO L87 Difference]: Start difference. First operand 20 states and 25 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:58:32,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:58:32,868 INFO L93 Difference]: Finished difference Result 34 states and 44 transitions. [2022-11-03 02:58:32,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 02:58:32,872 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-03 02:58:32,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:58:32,873 INFO L225 Difference]: With dead ends: 34 [2022-11-03 02:58:32,873 INFO L226 Difference]: Without dead ends: 25 [2022-11-03 02:58:32,873 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:58:32,875 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 36 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-03 02:58:32,875 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 21 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-03 02:58:32,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2022-11-03 02:58:32,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 21. [2022-11-03 02:58:32,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 20 states have (on average 1.3) internal successors, (26), 20 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:58:32,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 26 transitions. [2022-11-03 02:58:32,881 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 26 transitions. Word has length 13 [2022-11-03 02:58:32,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:58:32,881 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 26 transitions. [2022-11-03 02:58:32,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:58:32,881 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 26 transitions. [2022-11-03 02:58:32,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-03 02:58:32,882 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:58:32,882 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:58:32,892 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caff0959-c3a4-4e30-a77a-468d741d96ab/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-03 02:58:33,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caff0959-c3a4-4e30-a77a-468d741d96ab/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:58:33,083 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:58:33,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:58:33,084 INFO L85 PathProgramCache]: Analyzing trace with hash 40336396, now seen corresponding path program 1 times [2022-11-03 02:58:33,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:58:33,085 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [529668963] [2022-11-03 02:58:33,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:58:33,085 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:58:33,085 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caff0959-c3a4-4e30-a77a-468d741d96ab/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:58:33,086 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caff0959-c3a4-4e30-a77a-468d741d96ab/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:58:33,090 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caff0959-c3a4-4e30-a77a-468d741d96ab/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-03 02:58:33,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:58:33,175 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 02:58:33,177 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:58:33,199 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-03 02:58:33,200 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:58:33,200 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:58:33,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [529668963] [2022-11-03 02:58:33,201 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [529668963] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:58:33,201 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:58:33,201 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 02:58:33,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970561875] [2022-11-03 02:58:33,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:58:33,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 02:58:33,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:58:33,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 02:58:33,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:58:33,203 INFO L87 Difference]: Start difference. First operand 21 states and 26 transitions. Second operand has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:58:33,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:58:33,242 INFO L93 Difference]: Finished difference Result 31 states and 37 transitions. [2022-11-03 02:58:33,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 02:58:33,243 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-11-03 02:58:33,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:58:33,244 INFO L225 Difference]: With dead ends: 31 [2022-11-03 02:58:33,244 INFO L226 Difference]: Without dead ends: 29 [2022-11-03 02:58:33,244 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:58:33,246 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 8 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 02:58:33,246 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 67 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 02:58:33,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-11-03 02:58:33,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 23. [2022-11-03 02:58:33,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.2727272727272727) internal successors, (28), 22 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:58:33,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 28 transitions. [2022-11-03 02:58:33,252 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 28 transitions. Word has length 18 [2022-11-03 02:58:33,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:58:33,252 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 28 transitions. [2022-11-03 02:58:33,253 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:58:33,253 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 28 transitions. [2022-11-03 02:58:33,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-03 02:58:33,254 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:58:33,254 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:58:33,267 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caff0959-c3a4-4e30-a77a-468d741d96ab/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2022-11-03 02:58:33,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caff0959-c3a4-4e30-a77a-468d741d96ab/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:58:33,466 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:58:33,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:58:33,466 INFO L85 PathProgramCache]: Analyzing trace with hash 40395978, now seen corresponding path program 1 times [2022-11-03 02:58:33,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:58:33,467 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [899973020] [2022-11-03 02:58:33,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:58:33,467 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:58:33,467 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caff0959-c3a4-4e30-a77a-468d741d96ab/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:58:33,469 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caff0959-c3a4-4e30-a77a-468d741d96ab/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:58:33,475 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caff0959-c3a4-4e30-a77a-468d741d96ab/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-03 02:58:33,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:58:33,592 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-03 02:58:33,595 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:58:33,746 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 16 treesize of output 12 [2022-11-03 02:58:33,816 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 28 [2022-11-03 02:58:33,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:58:33,883 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-03 02:58:34,027 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 29 treesize of output 17 [2022-11-03 02:58:34,061 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:58:34,061 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:58:34,369 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 63 treesize of output 59 [2022-11-03 02:58:34,387 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1075 treesize of output 1059 [2022-11-03 02:58:38,870 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:58:38,870 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:58:38,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [899973020] [2022-11-03 02:58:38,871 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [899973020] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:58:38,871 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [935556416] [2022-11-03 02:58:38,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:58:38,871 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 02:58:38,871 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caff0959-c3a4-4e30-a77a-468d741d96ab/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 02:58:38,875 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caff0959-c3a4-4e30-a77a-468d741d96ab/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 02:58:38,880 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caff0959-c3a4-4e30-a77a-468d741d96ab/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process [2022-11-03 02:58:39,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:58:39,222 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-03 02:58:39,224 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:58:39,321 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 16 treesize of output 12 [2022-11-03 02:58:39,387 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 28 [2022-11-03 02:58:39,408 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:58:39,409 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-03 02:58:39,543 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 29 treesize of output 17 [2022-11-03 02:58:39,549 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:58:39,549 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:58:39,891 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 31 treesize of output 29 [2022-11-03 02:58:39,895 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 124 treesize of output 122 [2022-11-03 02:58:40,070 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:58:40,071 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [935556416] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:58:40,071 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [683552847] [2022-11-03 02:58:40,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:58:40,071 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:58:40,071 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caff0959-c3a4-4e30-a77a-468d741d96ab/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:58:40,073 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caff0959-c3a4-4e30-a77a-468d741d96ab/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:58:40,094 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caff0959-c3a4-4e30-a77a-468d741d96ab/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-03 02:58:40,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:58:40,163 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 28 conjunts are in the unsatisfiable core [2022-11-03 02:58:40,166 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:58:40,372 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 16 treesize of output 12 [2022-11-03 02:58:40,453 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 28 [2022-11-03 02:58:40,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:58:40,520 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-03 02:58:40,704 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:58:40,704 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:58:41,346 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 125 treesize of output 117 [2022-11-03 02:58:41,357 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 493 treesize of output 485 [2022-11-03 02:58:44,381 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:58:44,381 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [683552847] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:58:44,381 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-03 02:58:44,381 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8, 8, 10, 10] total 36 [2022-11-03 02:58:44,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617764112] [2022-11-03 02:58:44,382 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-03 02:58:44,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-11-03 02:58:44,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:58:44,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-11-03 02:58:44,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=219, Invalid=1041, Unknown=0, NotChecked=0, Total=1260 [2022-11-03 02:58:44,385 INFO L87 Difference]: Start difference. First operand 23 states and 28 transitions. Second operand has 36 states, 36 states have (on average 1.9722222222222223) internal successors, (71), 36 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:58:47,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:58:47,047 INFO L93 Difference]: Finished difference Result 122 states and 152 transitions. [2022-11-03 02:58:47,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-11-03 02:58:47,055 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 1.9722222222222223) internal successors, (71), 36 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-11-03 02:58:47,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:58:47,061 INFO L225 Difference]: With dead ends: 122 [2022-11-03 02:58:47,061 INFO L226 Difference]: Without dead ends: 112 [2022-11-03 02:58:47,064 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 68 SyntacticMatches, 1 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1251 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=762, Invalid=3398, Unknown=0, NotChecked=0, Total=4160 [2022-11-03 02:58:47,066 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 192 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 295 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 192 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 568 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 295 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 183 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-03 02:58:47,067 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [192 Valid, 141 Invalid, 568 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 295 Invalid, 0 Unknown, 183 Unchecked, 0.9s Time] [2022-11-03 02:58:47,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2022-11-03 02:58:47,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 41. [2022-11-03 02:58:47,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 40 states have (on average 1.425) internal successors, (57), 40 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:58:47,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 57 transitions. [2022-11-03 02:58:47,077 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 57 transitions. Word has length 18 [2022-11-03 02:58:47,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:58:47,077 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 57 transitions. [2022-11-03 02:58:47,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 1.9722222222222223) internal successors, (71), 36 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:58:47,078 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 57 transitions. [2022-11-03 02:58:47,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-03 02:58:47,078 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:58:47,079 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:58:47,091 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caff0959-c3a4-4e30-a77a-468d741d96ab/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (6)] Forceful destruction successful, exit code 0 [2022-11-03 02:58:47,289 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caff0959-c3a4-4e30-a77a-468d741d96ab/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-03 02:58:47,503 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caff0959-c3a4-4e30-a77a-468d741d96ab/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-03 02:58:47,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caff0959-c3a4-4e30-a77a-468d741d96ab/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caff0959-c3a4-4e30-a77a-468d741d96ab/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caff0959-c3a4-4e30-a77a-468d741d96ab/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:58:47,682 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:58:47,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:58:47,683 INFO L85 PathProgramCache]: Analyzing trace with hash 1421518926, now seen corresponding path program 1 times [2022-11-03 02:58:47,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:58:47,683 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [301591373] [2022-11-03 02:58:47,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:58:47,684 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:58:47,684 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caff0959-c3a4-4e30-a77a-468d741d96ab/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:58:47,687 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caff0959-c3a4-4e30-a77a-468d741d96ab/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:58:47,704 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caff0959-c3a4-4e30-a77a-468d741d96ab/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-11-03 02:58:47,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:58:47,769 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 02:58:47,771 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:58:47,814 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:58:47,815 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:58:47,815 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:58:47,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [301591373] [2022-11-03 02:58:47,815 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [301591373] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:58:47,815 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:58:47,815 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 02:58:47,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100540770] [2022-11-03 02:58:47,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:58:47,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 02:58:47,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:58:47,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 02:58:47,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:58:47,817 INFO L87 Difference]: Start difference. First operand 41 states and 57 transitions. Second operand has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:58:47,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:58:47,909 INFO L93 Difference]: Finished difference Result 77 states and 105 transitions. [2022-11-03 02:58:47,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 02:58:47,911 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-11-03 02:58:47,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:58:47,912 INFO L225 Difference]: With dead ends: 77 [2022-11-03 02:58:47,912 INFO L226 Difference]: Without dead ends: 52 [2022-11-03 02:58:47,912 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:58:47,913 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 35 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:58:47,914 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 49 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:58:47,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2022-11-03 02:58:47,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 38. [2022-11-03 02:58:47,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 37 states have (on average 1.3513513513513513) internal successors, (50), 37 states have internal predecessors, (50), 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) [2022-11-03 02:58:47,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 50 transitions. [2022-11-03 02:58:47,921 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 50 transitions. Word has length 18 [2022-11-03 02:58:47,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:58:47,921 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 50 transitions. [2022-11-03 02:58:47,922 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:58:47,922 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 50 transitions. [2022-11-03 02:58:47,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-03 02:58:47,923 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:58:47,923 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:58:47,941 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caff0959-c3a4-4e30-a77a-468d741d96ab/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-11-03 02:58:48,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caff0959-c3a4-4e30-a77a-468d741d96ab/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:58:48,141 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:58:48,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:58:48,142 INFO L85 PathProgramCache]: Analyzing trace with hash -340290083, now seen corresponding path program 1 times [2022-11-03 02:58:48,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:58:48,142 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [417874408] [2022-11-03 02:58:48,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:58:48,142 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:58:48,142 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caff0959-c3a4-4e30-a77a-468d741d96ab/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:58:48,143 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caff0959-c3a4-4e30-a77a-468d741d96ab/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:58:48,145 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caff0959-c3a4-4e30-a77a-468d741d96ab/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-03 02:58:48,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:58:48,233 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-03 02:58:48,235 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:58:48,359 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 16 treesize of output 12 [2022-11-03 02:58:48,415 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-03 02:58:48,610 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 29 treesize of output 17 [2022-11-03 02:58:48,633 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:58:48,634 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:58:48,908 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 25 treesize of output 23 [2022-11-03 02:58:48,915 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 54 [2022-11-03 02:58:49,120 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:58:49,121 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:58:49,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [417874408] [2022-11-03 02:58:49,121 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [417874408] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:58:49,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [773951129] [2022-11-03 02:58:49,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:58:49,121 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 02:58:49,121 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caff0959-c3a4-4e30-a77a-468d741d96ab/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 02:58:49,123 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caff0959-c3a4-4e30-a77a-468d741d96ab/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 02:58:49,131 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caff0959-c3a4-4e30-a77a-468d741d96ab/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2022-11-03 02:58:49,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:58:49,389 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-03 02:58:49,391 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:58:49,544 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 16 treesize of output 12 [2022-11-03 02:58:49,616 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-03 02:58:49,850 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 29 treesize of output 17 [2022-11-03 02:58:49,854 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:58:49,854 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:58:50,038 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 25 treesize of output 23 [2022-11-03 02:58:50,043 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 130 treesize of output 122 [2022-11-03 02:58:50,288 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:58:50,288 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [773951129] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:58:50,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [167912508] [2022-11-03 02:58:50,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:58:50,289 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:58:50,289 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caff0959-c3a4-4e30-a77a-468d741d96ab/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:58:50,290 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caff0959-c3a4-4e30-a77a-468d741d96ab/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:58:50,310 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caff0959-c3a4-4e30-a77a-468d741d96ab/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-03 02:58:50,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:58:50,397 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 27 conjunts are in the unsatisfiable core [2022-11-03 02:58:50,400 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:58:50,550 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 16 treesize of output 12 [2022-11-03 02:58:50,578 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-03 02:58:50,748 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:58:50,748 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:58:51,305 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 51 treesize of output 47 [2022-11-03 02:58:51,310 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 115 treesize of output 107 [2022-11-03 02:58:51,623 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:58:51,623 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [167912508] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:58:51,623 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-03 02:58:51,623 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9, 9, 11, 11] total 33 [2022-11-03 02:58:51,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325895167] [2022-11-03 02:58:51,624 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-03 02:58:51,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-11-03 02:58:51,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:58:51,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-11-03 02:58:51,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=890, Unknown=0, NotChecked=0, Total=1056 [2022-11-03 02:58:51,626 INFO L87 Difference]: Start difference. First operand 38 states and 50 transitions. Second operand has 33 states, 33 states have (on average 2.5454545454545454) internal successors, (84), 33 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:58:57,263 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:58:59,267 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:59:01,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:59:01,522 INFO L93 Difference]: Finished difference Result 161 states and 201 transitions. [2022-11-03 02:59:01,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-11-03 02:59:01,524 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 2.5454545454545454) internal successors, (84), 33 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-11-03 02:59:01,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:59:01,525 INFO L225 Difference]: With dead ends: 161 [2022-11-03 02:59:01,525 INFO L226 Difference]: Without dead ends: 143 [2022-11-03 02:59:01,528 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 107 SyntacticMatches, 2 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2000 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=1193, Invalid=5449, Unknown=0, NotChecked=0, Total=6642 [2022-11-03 02:59:01,528 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 386 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 460 mSolverCounterSat, 268 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 386 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 822 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 268 IncrementalHoareTripleChecker+Valid, 460 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 92 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2022-11-03 02:59:01,529 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [386 Valid, 144 Invalid, 822 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [268 Valid, 460 Invalid, 2 Unknown, 92 Unchecked, 5.6s Time] [2022-11-03 02:59:01,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2022-11-03 02:59:01,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 57. [2022-11-03 02:59:01,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 56 states have (on average 1.2857142857142858) internal successors, (72), 56 states have internal predecessors, (72), 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) [2022-11-03 02:59:01,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 72 transitions. [2022-11-03 02:59:01,541 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 72 transitions. Word has length 24 [2022-11-03 02:59:01,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:59:01,542 INFO L495 AbstractCegarLoop]: Abstraction has 57 states and 72 transitions. [2022-11-03 02:59:01,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 2.5454545454545454) internal successors, (84), 33 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:59:01,542 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 72 transitions. [2022-11-03 02:59:01,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-11-03 02:59:01,543 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:59:01,543 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:59:01,557 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caff0959-c3a4-4e30-a77a-468d741d96ab/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (10)] Forceful destruction successful, exit code 0 [2022-11-03 02:59:01,754 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caff0959-c3a4-4e30-a77a-468d741d96ab/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-11-03 02:59:01,968 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caff0959-c3a4-4e30-a77a-468d741d96ab/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-03 02:59:02,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caff0959-c3a4-4e30-a77a-468d741d96ab/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caff0959-c3a4-4e30-a77a-468d741d96ab/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caff0959-c3a4-4e30-a77a-468d741d96ab/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:59:02,147 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:59:02,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:59:02,148 INFO L85 PathProgramCache]: Analyzing trace with hash 1546939568, now seen corresponding path program 2 times [2022-11-03 02:59:02,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:59:02,148 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1714729976] [2022-11-03 02:59:02,148 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-03 02:59:02,149 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:59:02,149 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caff0959-c3a4-4e30-a77a-468d741d96ab/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:59:02,149 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caff0959-c3a4-4e30-a77a-468d741d96ab/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:59:02,150 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caff0959-c3a4-4e30-a77a-468d741d96ab/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-11-03 02:59:02,235 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-03 02:59:02,235 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 02:59:02,239 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-03 02:59:02,243 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:59:02,379 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 13 treesize of output 9 [2022-11-03 02:59:02,692 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:59:02,692 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:59:03,158 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 35 treesize of output 31 [2022-11-03 02:59:03,161 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 39 [2022-11-03 02:59:03,513 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:59:03,514 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:59:03,514 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1714729976] [2022-11-03 02:59:03,514 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1714729976] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:59:03,514 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1427167714] [2022-11-03 02:59:03,514 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-03 02:59:03,514 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 02:59:03,514 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caff0959-c3a4-4e30-a77a-468d741d96ab/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 02:59:03,515 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caff0959-c3a4-4e30-a77a-468d741d96ab/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 02:59:03,517 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caff0959-c3a4-4e30-a77a-468d741d96ab/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2022-11-03 02:59:03,741 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-03 02:59:03,741 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 02:59:03,743 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-03 02:59:03,745 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:59:03,825 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 13 treesize of output 9 [2022-11-03 02:59:04,000 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 29 treesize of output 17 [2022-11-03 02:59:04,003 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:59:04,003 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:59:04,344 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 17 treesize of output 15 [2022-11-03 02:59:04,348 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2022-11-03 02:59:04,635 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:59:04,635 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1427167714] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:59:04,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1475897790] [2022-11-03 02:59:04,636 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-03 02:59:04,636 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:59:04,636 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caff0959-c3a4-4e30-a77a-468d741d96ab/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:59:04,643 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caff0959-c3a4-4e30-a77a-468d741d96ab/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:59:04,651 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caff0959-c3a4-4e30-a77a-468d741d96ab/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-03 02:59:04,737 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-03 02:59:04,737 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 02:59:04,741 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-03 02:59:04,744 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:59:04,852 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 13 treesize of output 9 [2022-11-03 02:59:05,049 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 29 treesize of output 17 [2022-11-03 02:59:05,052 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:59:05,052 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:59:05,153 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 17 treesize of output 15 [2022-11-03 02:59:05,157 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2022-11-03 02:59:05,228 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:59:05,228 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1475897790] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:59:05,228 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-03 02:59:05,229 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12, 11, 10, 11, 10] total 28 [2022-11-03 02:59:05,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930320152] [2022-11-03 02:59:05,229 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-03 02:59:05,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-11-03 02:59:05,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:59:05,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-11-03 02:59:05,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=644, Unknown=0, NotChecked=0, Total=756 [2022-11-03 02:59:05,230 INFO L87 Difference]: Start difference. First operand 57 states and 72 transitions. Second operand has 28 states, 28 states have (on average 2.857142857142857) internal successors, (80), 28 states have internal predecessors, (80), 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) [2022-11-03 02:59:10,289 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:59:14,941 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:59:16,957 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:59:18,963 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:59:20,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:59:20,971 INFO L93 Difference]: Finished difference Result 238 states and 296 transitions. [2022-11-03 02:59:20,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2022-11-03 02:59:20,971 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 2.857142857142857) internal successors, (80), 28 states have internal predecessors, (80), 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 30 [2022-11-03 02:59:20,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:59:20,973 INFO L225 Difference]: With dead ends: 238 [2022-11-03 02:59:20,973 INFO L226 Difference]: Without dead ends: 208 [2022-11-03 02:59:20,975 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 3 DeprecatedPredicates, 2212 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=1079, Invalid=6403, Unknown=0, NotChecked=0, Total=7482 [2022-11-03 02:59:20,976 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 341 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 666 mSolverCounterSat, 235 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 341 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 1030 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 235 IncrementalHoareTripleChecker+Valid, 666 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 125 IncrementalHoareTripleChecker+Unchecked, 10.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:59:20,976 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [341 Valid, 154 Invalid, 1030 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [235 Valid, 666 Invalid, 4 Unknown, 125 Unchecked, 10.4s Time] [2022-11-03 02:59:20,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2022-11-03 02:59:21,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 111. [2022-11-03 02:59:21,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 110 states have (on average 1.2545454545454546) internal successors, (138), 110 states have internal predecessors, (138), 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) [2022-11-03 02:59:21,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 138 transitions. [2022-11-03 02:59:21,012 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 138 transitions. Word has length 30 [2022-11-03 02:59:21,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:59:21,012 INFO L495 AbstractCegarLoop]: Abstraction has 111 states and 138 transitions. [2022-11-03 02:59:21,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 2.857142857142857) internal successors, (80), 28 states have internal predecessors, (80), 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) [2022-11-03 02:59:21,013 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 138 transitions. [2022-11-03 02:59:21,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-03 02:59:21,015 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:59:21,015 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:59:21,035 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caff0959-c3a4-4e30-a77a-468d741d96ab/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-11-03 02:59:21,226 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caff0959-c3a4-4e30-a77a-468d741d96ab/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (13)] Forceful destruction successful, exit code 0 [2022-11-03 02:59:21,445 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caff0959-c3a4-4e30-a77a-468d741d96ab/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-03 02:59:21,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caff0959-c3a4-4e30-a77a-468d741d96ab/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caff0959-c3a4-4e30-a77a-468d741d96ab/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caff0959-c3a4-4e30-a77a-468d741d96ab/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:59:21,623 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:59:21,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:59:21,624 INFO L85 PathProgramCache]: Analyzing trace with hash -1896113853, now seen corresponding path program 3 times [2022-11-03 02:59:21,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:59:21,624 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1802606433] [2022-11-03 02:59:21,624 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-03 02:59:21,624 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:59:21,624 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caff0959-c3a4-4e30-a77a-468d741d96ab/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:59:21,625 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caff0959-c3a4-4e30-a77a-468d741d96ab/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:59:21,628 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caff0959-c3a4-4e30-a77a-468d741d96ab/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-11-03 02:59:21,744 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-11-03 02:59:21,744 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 02:59:21,751 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-03 02:59:21,752 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:59:25,989 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 9 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:59:25,989 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:59:28,766 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 9 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:59:28,767 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:59:28,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1802606433] [2022-11-03 02:59:28,767 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1802606433] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:59:28,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [67287753] [2022-11-03 02:59:28,767 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-03 02:59:28,767 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 02:59:28,767 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caff0959-c3a4-4e30-a77a-468d741d96ab/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 02:59:28,768 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caff0959-c3a4-4e30-a77a-468d741d96ab/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 02:59:28,770 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caff0959-c3a4-4e30-a77a-468d741d96ab/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (16)] Waiting until timeout for monitored process [2022-11-03 02:59:29,177 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-11-03 02:59:29,177 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 02:59:29,180 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-03 02:59:29,181 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:59:31,554 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 9 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:59:31,554 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:59:32,094 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 9 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:59:32,094 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [67287753] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:59:32,094 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1047718863] [2022-11-03 02:59:32,094 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-03 02:59:32,094 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:59:32,095 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caff0959-c3a4-4e30-a77a-468d741d96ab/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:59:32,096 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caff0959-c3a4-4e30-a77a-468d741d96ab/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:59:32,107 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caff0959-c3a4-4e30-a77a-468d741d96ab/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-11-03 02:59:32,223 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-11-03 02:59:32,223 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 02:59:32,228 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-03 02:59:32,230 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:59:34,579 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 9 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:59:34,579 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:59:35,098 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 9 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:59:35,099 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1047718863] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:59:35,099 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-03 02:59:35,099 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11, 11, 11, 10] total 20 [2022-11-03 02:59:35,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600154397] [2022-11-03 02:59:35,099 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-03 02:59:35,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-03 02:59:35,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:59:35,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-03 02:59:35,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=272, Unknown=0, NotChecked=0, Total=380 [2022-11-03 02:59:35,102 INFO L87 Difference]: Start difference. First operand 111 states and 138 transitions. Second operand has 20 states, 20 states have (on average 3.4) internal successors, (68), 20 states have internal predecessors, (68), 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) [2022-11-03 02:59:37,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:59:37,893 INFO L93 Difference]: Finished difference Result 169 states and 208 transitions. [2022-11-03 02:59:37,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-03 02:59:37,897 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.4) internal successors, (68), 20 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2022-11-03 02:59:37,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:59:37,897 INFO L225 Difference]: With dead ends: 169 [2022-11-03 02:59:37,898 INFO L226 Difference]: Without dead ends: 98 [2022-11-03 02:59:37,898 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 192 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=149, Invalid=357, Unknown=0, NotChecked=0, Total=506 [2022-11-03 02:59:37,899 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 137 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 240 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-03 02:59:37,899 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [137 Valid, 110 Invalid, 267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 240 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-11-03 02:59:37,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2022-11-03 02:59:37,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 85. [2022-11-03 02:59:37,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 84 states have (on average 1.2738095238095237) internal successors, (107), 84 states have internal predecessors, (107), 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) [2022-11-03 02:59:37,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 107 transitions. [2022-11-03 02:59:37,918 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 107 transitions. Word has length 36 [2022-11-03 02:59:37,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:59:37,918 INFO L495 AbstractCegarLoop]: Abstraction has 85 states and 107 transitions. [2022-11-03 02:59:37,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.4) internal successors, (68), 20 states have internal predecessors, (68), 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) [2022-11-03 02:59:37,919 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 107 transitions. [2022-11-03 02:59:37,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-11-03 02:59:37,920 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:59:37,920 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:59:37,932 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caff0959-c3a4-4e30-a77a-468d741d96ab/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2022-11-03 02:59:38,155 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caff0959-c3a4-4e30-a77a-468d741d96ab/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-11-03 02:59:38,335 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caff0959-c3a4-4e30-a77a-468d741d96ab/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (16)] Forceful destruction successful, exit code 0 [2022-11-03 02:59:38,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caff0959-c3a4-4e30-a77a-468d741d96ab/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caff0959-c3a4-4e30-a77a-468d741d96ab/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caff0959-c3a4-4e30-a77a-468d741d96ab/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt [2022-11-03 02:59:38,533 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:59:38,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:59:38,533 INFO L85 PathProgramCache]: Analyzing trace with hash -754137390, now seen corresponding path program 4 times [2022-11-03 02:59:38,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:59:38,533 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [871819759] [2022-11-03 02:59:38,533 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-03 02:59:38,534 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:59:38,534 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caff0959-c3a4-4e30-a77a-468d741d96ab/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:59:38,534 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caff0959-c3a4-4e30-a77a-468d741d96ab/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:59:38,536 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caff0959-c3a4-4e30-a77a-468d741d96ab/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-11-03 02:59:38,647 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-03 02:59:38,647 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 02:59:38,654 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-03 02:59:38,656 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:59:38,848 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 16 treesize of output 12 [2022-11-03 02:59:38,907 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 28 [2022-11-03 02:59:38,923 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-03 02:59:39,285 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 29 treesize of output 17 [2022-11-03 02:59:39,309 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 6 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:59:39,309 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:59:39,936 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 33 treesize of output 31 [2022-11-03 02:59:39,940 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 266 treesize of output 258 [2022-11-03 02:59:40,432 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 6 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:59:40,432 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:59:40,432 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [871819759] [2022-11-03 02:59:40,432 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [871819759] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:59:40,432 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [266780899] [2022-11-03 02:59:40,432 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-03 02:59:40,432 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 02:59:40,432 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caff0959-c3a4-4e30-a77a-468d741d96ab/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 02:59:40,433 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caff0959-c3a4-4e30-a77a-468d741d96ab/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 02:59:40,439 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caff0959-c3a4-4e30-a77a-468d741d96ab/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (19)] Waiting until timeout for monitored process [2022-11-03 02:59:40,817 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-03 02:59:40,817 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 02:59:40,821 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-03 02:59:40,823 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:59:41,007 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 16 treesize of output 12 [2022-11-03 02:59:41,095 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 28 [2022-11-03 02:59:41,116 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-03 02:59:41,617 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 29 treesize of output 17 [2022-11-03 02:59:41,620 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 6 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:59:41,620 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:59:42,119 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 33 treesize of output 31 [2022-11-03 02:59:42,125 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 266 treesize of output 258 [2022-11-03 02:59:42,393 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 6 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:59:42,393 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [266780899] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:59:42,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [111616441] [2022-11-03 02:59:42,394 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-03 02:59:42,394 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:59:42,394 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caff0959-c3a4-4e30-a77a-468d741d96ab/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:59:42,399 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caff0959-c3a4-4e30-a77a-468d741d96ab/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:59:42,411 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caff0959-c3a4-4e30-a77a-468d741d96ab/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-11-03 02:59:42,519 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-03 02:59:42,519 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 02:59:42,527 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 32 conjunts are in the unsatisfiable core [2022-11-03 02:59:42,530 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:59:43,056 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 16 treesize of output 12 [2022-11-03 02:59:43,143 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 28 [2022-11-03 02:59:43,160 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-03 02:59:43,862 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 6 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:59:43,863 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:59:45,329 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 63 [2022-11-03 02:59:45,332 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 531 treesize of output 515 [2022-11-03 02:59:47,972 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:59:47,972 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [111616441] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:59:47,973 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-03 02:59:47,973 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14, 11, 12, 15, 17] total 61 [2022-11-03 02:59:47,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387118992] [2022-11-03 02:59:47,973 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-03 02:59:47,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2022-11-03 02:59:47,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:59:47,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2022-11-03 02:59:47,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=404, Invalid=3256, Unknown=0, NotChecked=0, Total=3660 [2022-11-03 02:59:47,976 INFO L87 Difference]: Start difference. First operand 85 states and 107 transitions. Second operand has 61 states, 61 states have (on average 3.1147540983606556) internal successors, (190), 61 states have internal predecessors, (190), 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) [2022-11-03 03:00:03,420 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:00:05,423 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:00:13,964 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:00:15,968 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:00:18,080 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:00:20,084 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:00:22,092 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:00:24,096 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:00:26,103 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:00:28,106 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:00:30,213 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:00:32,219 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:00:34,224 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:00:36,231 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:00:38,235 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:00:40,238 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:00:59,870 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:01:01,875 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:01:03,879 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:01:05,883 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:01:07,892 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:01:09,898 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:01:11,902 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:01:13,906 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:01:15,913 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:01:21,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:01:21,819 INFO L93 Difference]: Finished difference Result 712 states and 904 transitions. [2022-11-03 03:01:21,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 209 states. [2022-11-03 03:01:21,820 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 61 states have (on average 3.1147540983606556) internal successors, (190), 61 states have internal predecessors, (190), 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 41 [2022-11-03 03:01:21,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:01:21,822 INFO L225 Difference]: With dead ends: 712 [2022-11-03 03:01:21,822 INFO L226 Difference]: Without dead ends: 542 [2022-11-03 03:01:21,830 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 499 GetRequests, 205 SyntacticMatches, 30 SemanticMatches, 264 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29798 ImplicationChecksByTransitivity, 39.0s TimeCoverageRelationStatistics Valid=8005, Invalid=62485, Unknown=0, NotChecked=0, Total=70490 [2022-11-03 03:01:21,831 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 1558 mSDsluCounter, 580 mSDsCounter, 0 mSdLazyCounter, 2940 mSolverCounterSat, 928 mSolverCounterUnsat, 25 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 58.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1558 SdHoareTripleChecker+Valid, 603 SdHoareTripleChecker+Invalid, 5563 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 928 IncrementalHoareTripleChecker+Valid, 2940 IncrementalHoareTripleChecker+Invalid, 25 IncrementalHoareTripleChecker+Unknown, 1670 IncrementalHoareTripleChecker+Unchecked, 59.7s IncrementalHoareTripleChecker+Time [2022-11-03 03:01:21,831 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1558 Valid, 603 Invalid, 5563 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [928 Valid, 2940 Invalid, 25 Unknown, 1670 Unchecked, 59.7s Time] [2022-11-03 03:01:21,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 542 states. [2022-11-03 03:01:21,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 542 to 189. [2022-11-03 03:01:21,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 188 states have (on average 1.2872340425531914) internal successors, (242), 188 states have internal predecessors, (242), 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) [2022-11-03 03:01:21,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 242 transitions. [2022-11-03 03:01:21,866 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 242 transitions. Word has length 41 [2022-11-03 03:01:21,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:01:21,866 INFO L495 AbstractCegarLoop]: Abstraction has 189 states and 242 transitions. [2022-11-03 03:01:21,867 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 3.1147540983606556) internal successors, (190), 61 states have internal predecessors, (190), 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) [2022-11-03 03:01:21,867 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 242 transitions. [2022-11-03 03:01:21,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-11-03 03:01:21,869 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:01:21,869 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:01:21,893 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caff0959-c3a4-4e30-a77a-468d741d96ab/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-11-03 03:01:22,078 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caff0959-c3a4-4e30-a77a-468d741d96ab/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (19)] Forceful destruction successful, exit code 0 [2022-11-03 03:01:22,284 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caff0959-c3a4-4e30-a77a-468d741d96ab/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2022-11-03 03:01:22,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caff0959-c3a4-4e30-a77a-468d741d96ab/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caff0959-c3a4-4e30-a77a-468d741d96ab/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caff0959-c3a4-4e30-a77a-468d741d96ab/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:01:22,475 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:01:22,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:01:22,476 INFO L85 PathProgramCache]: Analyzing trace with hash 2067550693, now seen corresponding path program 5 times [2022-11-03 03:01:22,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:01:22,476 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1097197373] [2022-11-03 03:01:22,476 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-03 03:01:22,476 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:01:22,477 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caff0959-c3a4-4e30-a77a-468d741d96ab/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:01:22,478 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caff0959-c3a4-4e30-a77a-468d741d96ab/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:01:22,505 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caff0959-c3a4-4e30-a77a-468d741d96ab/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2022-11-03 03:01:22,641 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-11-03 03:01:22,641 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 03:01:22,649 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 32 conjunts are in the unsatisfiable core [2022-11-03 03:01:22,654 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:01:22,734 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 16 treesize of output 12 [2022-11-03 03:01:22,782 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 28 [2022-11-03 03:01:22,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:01:22,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:01:22,918 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 03:01:22,918 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 35 treesize of output 37 [2022-11-03 03:01:22,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:01:22,938 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:01:22,941 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 03:01:22,941 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 35 treesize of output 37 [2022-11-03 03:01:23,007 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 03:01:23,007 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 46 [2022-11-03 03:01:24,132 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 03:01:24,133 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 50 treesize of output 26 [2022-11-03 03:01:24,178 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 8 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:01:24,178 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:01:32,030 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 187 treesize of output 179 [2022-11-03 03:01:32,153 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 03:01:32,157 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 23560163 treesize of output 23232483 [2022-11-03 03:03:07,617 WARN L234 SmtUtils]: Spent 1.59m on a formula simplification that was a NOOP. DAG size: 1823 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify)