./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-fpi/ifeqn4.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7e70badd Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efbeb6b3-02a8-4387-a9ae-106acc0292d1/bin/uautomizer-wIGwrQj20G/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efbeb6b3-02a8-4387-a9ae-106acc0292d1/bin/uautomizer-wIGwrQj20G/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efbeb6b3-02a8-4387-a9ae-106acc0292d1/bin/uautomizer-wIGwrQj20G/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efbeb6b3-02a8-4387-a9ae-106acc0292d1/bin/uautomizer-wIGwrQj20G/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-fpi/ifeqn4.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efbeb6b3-02a8-4387-a9ae-106acc0292d1/bin/uautomizer-wIGwrQj20G/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efbeb6b3-02a8-4387-a9ae-106acc0292d1/bin/uautomizer-wIGwrQj20G --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b0db5597ff96f0e5a728327333d32dd7df56f4b1fb643f99ebf0f69cacecd717 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-7e70bad [2021-11-23 14:17:14,936 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 14:17:14,939 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 14:17:14,991 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 14:17:14,991 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 14:17:14,995 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 14:17:14,998 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 14:17:15,001 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 14:17:15,004 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 14:17:15,009 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 14:17:15,010 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 14:17:15,012 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 14:17:15,013 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 14:17:15,015 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 14:17:15,017 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 14:17:15,023 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 14:17:15,024 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 14:17:15,026 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 14:17:15,028 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 14:17:15,035 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 14:17:15,037 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 14:17:15,039 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 14:17:15,042 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 14:17:15,043 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 14:17:15,052 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 14:17:15,053 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 14:17:15,053 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 14:17:15,055 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 14:17:15,056 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 14:17:15,057 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 14:17:15,058 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 14:17:15,059 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 14:17:15,061 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 14:17:15,062 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 14:17:15,063 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 14:17:15,064 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 14:17:15,064 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 14:17:15,065 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 14:17:15,065 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 14:17:15,066 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 14:17:15,067 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 14:17:15,068 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efbeb6b3-02a8-4387-a9ae-106acc0292d1/bin/uautomizer-wIGwrQj20G/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-23 14:17:15,114 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 14:17:15,114 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 14:17:15,115 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 14:17:15,115 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 14:17:15,123 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-23 14:17:15,123 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-23 14:17:15,123 INFO L138 SettingsManager]: * Use SBE=true [2021-11-23 14:17:15,124 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 14:17:15,124 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 14:17:15,124 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 14:17:15,125 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 14:17:15,125 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 14:17:15,126 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 14:17:15,126 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 14:17:15,126 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 14:17:15,126 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 14:17:15,127 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 14:17:15,127 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 14:17:15,127 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 14:17:15,127 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 14:17:15,127 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 14:17:15,128 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 14:17:15,128 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 14:17:15,128 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 14:17:15,128 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 14:17:15,129 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 14:17:15,129 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-23 14:17:15,129 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 14:17:15,129 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-23 14:17:15,131 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-23 14:17:15,131 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 14:17:15,131 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 14:17:15,132 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_efbeb6b3-02a8-4387-a9ae-106acc0292d1/bin/uautomizer-wIGwrQj20G/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efbeb6b3-02a8-4387-a9ae-106acc0292d1/bin/uautomizer-wIGwrQj20G Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b0db5597ff96f0e5a728327333d32dd7df56f4b1fb643f99ebf0f69cacecd717 [2021-11-23 14:17:15,393 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 14:17:15,417 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 14:17:15,420 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 14:17:15,422 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 14:17:15,422 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 14:17:15,424 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efbeb6b3-02a8-4387-a9ae-106acc0292d1/bin/uautomizer-wIGwrQj20G/../../sv-benchmarks/c/array-fpi/ifeqn4.c [2021-11-23 14:17:15,501 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efbeb6b3-02a8-4387-a9ae-106acc0292d1/bin/uautomizer-wIGwrQj20G/data/e685e2557/2b9d31f79dc24177af3a9f6164321402/FLAGabe5b6d9a [2021-11-23 14:17:15,901 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 14:17:15,901 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efbeb6b3-02a8-4387-a9ae-106acc0292d1/sv-benchmarks/c/array-fpi/ifeqn4.c [2021-11-23 14:17:15,908 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efbeb6b3-02a8-4387-a9ae-106acc0292d1/bin/uautomizer-wIGwrQj20G/data/e685e2557/2b9d31f79dc24177af3a9f6164321402/FLAGabe5b6d9a [2021-11-23 14:17:16,320 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efbeb6b3-02a8-4387-a9ae-106acc0292d1/bin/uautomizer-wIGwrQj20G/data/e685e2557/2b9d31f79dc24177af3a9f6164321402 [2021-11-23 14:17:16,323 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 14:17:16,324 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 14:17:16,337 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 14:17:16,337 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 14:17:16,340 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 14:17:16,341 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:17:16" (1/1) ... [2021-11-23 14:17:16,343 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64589504 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:17:16, skipping insertion in model container [2021-11-23 14:17:16,344 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:17:16" (1/1) ... [2021-11-23 14:17:16,351 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 14:17:16,369 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 14:17:16,535 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_efbeb6b3-02a8-4387-a9ae-106acc0292d1/sv-benchmarks/c/array-fpi/ifeqn4.c[589,602] [2021-11-23 14:17:16,554 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 14:17:16,563 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 14:17:16,576 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_efbeb6b3-02a8-4387-a9ae-106acc0292d1/sv-benchmarks/c/array-fpi/ifeqn4.c[589,602] [2021-11-23 14:17:16,585 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 14:17:16,597 INFO L208 MainTranslator]: Completed translation [2021-11-23 14:17:16,598 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:17:16 WrapperNode [2021-11-23 14:17:16,598 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 14:17:16,599 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 14:17:16,599 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 14:17:16,599 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 14:17:16,606 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:17:16" (1/1) ... [2021-11-23 14:17:16,614 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:17:16" (1/1) ... [2021-11-23 14:17:16,635 INFO L137 Inliner]: procedures = 16, calls = 19, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 74 [2021-11-23 14:17:16,636 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 14:17:16,636 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 14:17:16,637 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 14:17:16,637 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 14:17:16,645 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:17:16" (1/1) ... [2021-11-23 14:17:16,646 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:17:16" (1/1) ... [2021-11-23 14:17:16,648 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:17:16" (1/1) ... [2021-11-23 14:17:16,648 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:17:16" (1/1) ... [2021-11-23 14:17:16,655 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:17:16" (1/1) ... [2021-11-23 14:17:16,659 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:17:16" (1/1) ... [2021-11-23 14:17:16,667 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:17:16" (1/1) ... [2021-11-23 14:17:16,669 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 14:17:16,670 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 14:17:16,670 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 14:17:16,671 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 14:17:16,677 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:17:16" (1/1) ... [2021-11-23 14:17:16,696 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 14:17:16,707 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efbeb6b3-02a8-4387-a9ae-106acc0292d1/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 14:17:16,728 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efbeb6b3-02a8-4387-a9ae-106acc0292d1/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 14:17:16,758 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efbeb6b3-02a8-4387-a9ae-106acc0292d1/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 14:17:16,776 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 14:17:16,777 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 14:17:16,777 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-23 14:17:16,777 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-23 14:17:16,777 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 14:17:16,778 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 14:17:16,778 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-23 14:17:16,852 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 14:17:16,854 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 14:17:17,063 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 14:17:17,069 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 14:17:17,069 INFO L301 CfgBuilder]: Removed 3 assume(true) statements. [2021-11-23 14:17:17,071 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:17:17 BoogieIcfgContainer [2021-11-23 14:17:17,072 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 14:17:17,073 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 14:17:17,074 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 14:17:17,077 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 14:17:17,077 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:17:16" (1/3) ... [2021-11-23 14:17:17,078 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18dcab0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:17:17, skipping insertion in model container [2021-11-23 14:17:17,078 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:17:16" (2/3) ... [2021-11-23 14:17:17,079 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18dcab0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:17:17, skipping insertion in model container [2021-11-23 14:17:17,079 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:17:17" (3/3) ... [2021-11-23 14:17:17,080 INFO L111 eAbstractionObserver]: Analyzing ICFG ifeqn4.c [2021-11-23 14:17:17,085 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 14:17:17,086 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 14:17:17,133 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 14:17:17,140 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-23 14:17:17,141 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-23 14:17:17,154 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 21 states have (on average 1.5714285714285714) internal successors, (33), 22 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:17:17,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-23 14:17:17,160 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 14:17:17,161 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 14:17:17,161 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 14:17:17,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 14:17:17,167 INFO L85 PathProgramCache]: Analyzing trace with hash -1670316217, now seen corresponding path program 1 times [2021-11-23 14:17:17,175 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 14:17:17,176 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726464479] [2021-11-23 14:17:17,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:17:17,177 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 14:17:17,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 14:17:17,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 14:17:17,324 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 14:17:17,325 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726464479] [2021-11-23 14:17:17,326 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1726464479] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 14:17:17,327 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 14:17:17,328 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 14:17:17,330 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784992731] [2021-11-23 14:17:17,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 14:17:17,335 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-23 14:17:17,335 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 14:17:17,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-23 14:17:17,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 14:17:17,379 INFO L87 Difference]: Start difference. First operand has 23 states, 21 states have (on average 1.5714285714285714) internal successors, (33), 22 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:17:17,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 14:17:17,403 INFO L93 Difference]: Finished difference Result 42 states and 60 transitions. [2021-11-23 14:17:17,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-23 14:17:17,406 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-11-23 14:17:17,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 14:17:17,414 INFO L225 Difference]: With dead ends: 42 [2021-11-23 14:17:17,415 INFO L226 Difference]: Without dead ends: 19 [2021-11-23 14:17:17,419 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 14:17:17,426 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 14:17:17,427 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 14:17:17,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-11-23 14:17:17,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2021-11-23 14:17:17,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 18 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:17:17,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 23 transitions. [2021-11-23 14:17:17,468 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 23 transitions. Word has length 12 [2021-11-23 14:17:17,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 14:17:17,468 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 23 transitions. [2021-11-23 14:17:17,469 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:17:17,469 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 23 transitions. [2021-11-23 14:17:17,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-23 14:17:17,470 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 14:17:17,470 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 14:17:17,470 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 14:17:17,471 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 14:17:17,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 14:17:17,476 INFO L85 PathProgramCache]: Analyzing trace with hash -1000416578, now seen corresponding path program 1 times [2021-11-23 14:17:17,476 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 14:17:17,477 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968556010] [2021-11-23 14:17:17,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:17:17,477 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 14:17:17,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 14:17:17,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 14:17:17,619 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 14:17:17,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968556010] [2021-11-23 14:17:17,620 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1968556010] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 14:17:17,620 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 14:17:17,620 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 14:17:17,621 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66882439] [2021-11-23 14:17:17,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 14:17:17,623 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 14:17:17,624 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 14:17:17,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 14:17:17,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-23 14:17:17,627 INFO L87 Difference]: Start difference. First operand 19 states and 23 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:17:17,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 14:17:17,728 INFO L93 Difference]: Finished difference Result 45 states and 57 transitions. [2021-11-23 14:17:17,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 14:17:17,729 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-11-23 14:17:17,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 14:17:17,731 INFO L225 Difference]: With dead ends: 45 [2021-11-23 14:17:17,731 INFO L226 Difference]: Without dead ends: 31 [2021-11-23 14:17:17,732 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-23 14:17:17,734 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 37 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 14:17:17,736 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [37 Valid, 17 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 14:17:17,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2021-11-23 14:17:17,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 23. [2021-11-23 14:17:17,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.2272727272727273) internal successors, (27), 22 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:17:17,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2021-11-23 14:17:17,747 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 12 [2021-11-23 14:17:17,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 14:17:17,749 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2021-11-23 14:17:17,749 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:17:17,750 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2021-11-23 14:17:17,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-23 14:17:17,752 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 14:17:17,754 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 14:17:17,754 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-23 14:17:17,755 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 14:17:17,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 14:17:17,756 INFO L85 PathProgramCache]: Analyzing trace with hash -1992201947, now seen corresponding path program 1 times [2021-11-23 14:17:17,757 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 14:17:17,757 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554573442] [2021-11-23 14:17:17,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:17:17,759 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 14:17:17,803 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 14:17:17,803 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [111585321] [2021-11-23 14:17:17,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:17:17,804 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 14:17:17,804 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efbeb6b3-02a8-4387-a9ae-106acc0292d1/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 14:17:17,805 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efbeb6b3-02a8-4387-a9ae-106acc0292d1/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 14:17:17,825 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efbeb6b3-02a8-4387-a9ae-106acc0292d1/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-23 14:17:17,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 14:17:17,902 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-23 14:17:17,907 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 14:17:18,027 INFO L388 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 11 treesize of output 7 [2021-11-23 14:17:18,177 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-23 14:17:18,177 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 14:17:18,177 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 14:17:18,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554573442] [2021-11-23 14:17:18,178 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 14:17:18,178 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [111585321] [2021-11-23 14:17:18,181 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [111585321] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 14:17:18,181 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 14:17:18,181 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 14:17:18,181 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163363884] [2021-11-23 14:17:18,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 14:17:18,182 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 14:17:18,182 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 14:17:18,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 14:17:18,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-23 14:17:18,183 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:17:18,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 14:17:18,288 INFO L93 Difference]: Finished difference Result 40 states and 46 transitions. [2021-11-23 14:17:18,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 14:17:18,289 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-11-23 14:17:18,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 14:17:18,290 INFO L225 Difference]: With dead ends: 40 [2021-11-23 14:17:18,290 INFO L226 Difference]: Without dead ends: 38 [2021-11-23 14:17:18,291 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-23 14:17:18,292 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 16 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 14:17:18,292 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 62 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 14:17:18,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2021-11-23 14:17:18,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 28. [2021-11-23 14:17:18,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.2222222222222223) internal successors, (33), 27 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:17:18,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 33 transitions. [2021-11-23 14:17:18,299 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 33 transitions. Word has length 18 [2021-11-23 14:17:18,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 14:17:18,300 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 33 transitions. [2021-11-23 14:17:18,300 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:17:18,300 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 33 transitions. [2021-11-23 14:17:18,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-23 14:17:18,301 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 14:17:18,301 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 14:17:18,340 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efbeb6b3-02a8-4387-a9ae-106acc0292d1/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-23 14:17:18,520 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efbeb6b3-02a8-4387-a9ae-106acc0292d1/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 14:17:18,520 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 14:17:18,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 14:17:18,521 INFO L85 PathProgramCache]: Analyzing trace with hash 259417010, now seen corresponding path program 1 times [2021-11-23 14:17:18,521 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 14:17:18,522 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854597488] [2021-11-23 14:17:18,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:17:18,522 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 14:17:18,553 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 14:17:18,554 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [456175178] [2021-11-23 14:17:18,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:17:18,565 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 14:17:18,565 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efbeb6b3-02a8-4387-a9ae-106acc0292d1/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 14:17:18,566 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efbeb6b3-02a8-4387-a9ae-106acc0292d1/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 14:17:18,569 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efbeb6b3-02a8-4387-a9ae-106acc0292d1/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-23 14:17:18,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 14:17:18,614 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-23 14:17:18,615 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 14:17:18,703 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 14:17:18,703 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 14:17:18,767 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 14:17:18,767 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 14:17:18,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854597488] [2021-11-23 14:17:18,767 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 14:17:18,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [456175178] [2021-11-23 14:17:18,768 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [456175178] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 14:17:18,768 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-23 14:17:18,768 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2021-11-23 14:17:18,768 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125995413] [2021-11-23 14:17:18,769 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-23 14:17:18,769 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-23 14:17:18,769 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 14:17:18,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-23 14:17:18,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-23 14:17:18,770 INFO L87 Difference]: Start difference. First operand 28 states and 33 transitions. Second operand has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:17:18,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 14:17:18,915 INFO L93 Difference]: Finished difference Result 70 states and 82 transitions. [2021-11-23 14:17:18,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-23 14:17:18,916 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-11-23 14:17:18,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 14:17:18,917 INFO L225 Difference]: With dead ends: 70 [2021-11-23 14:17:18,917 INFO L226 Difference]: Without dead ends: 43 [2021-11-23 14:17:18,918 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2021-11-23 14:17:18,919 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 35 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 14:17:18,919 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [35 Valid, 44 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 14:17:18,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2021-11-23 14:17:18,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 27. [2021-11-23 14:17:18,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.1923076923076923) internal successors, (31), 26 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:17:18,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2021-11-23 14:17:18,926 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 21 [2021-11-23 14:17:18,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 14:17:18,926 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2021-11-23 14:17:18,926 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:17:18,926 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2021-11-23 14:17:18,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-23 14:17:18,927 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 14:17:18,927 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 14:17:18,963 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efbeb6b3-02a8-4387-a9ae-106acc0292d1/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-23 14:17:19,140 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efbeb6b3-02a8-4387-a9ae-106acc0292d1/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2021-11-23 14:17:19,141 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 14:17:19,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 14:17:19,141 INFO L85 PathProgramCache]: Analyzing trace with hash 939318754, now seen corresponding path program 1 times [2021-11-23 14:17:19,141 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 14:17:19,142 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945333415] [2021-11-23 14:17:19,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:17:19,142 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 14:17:19,168 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 14:17:19,173 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [917791242] [2021-11-23 14:17:19,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:17:19,174 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 14:17:19,174 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efbeb6b3-02a8-4387-a9ae-106acc0292d1/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 14:17:19,182 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efbeb6b3-02a8-4387-a9ae-106acc0292d1/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 14:17:19,183 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efbeb6b3-02a8-4387-a9ae-106acc0292d1/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-23 14:17:19,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 14:17:19,252 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 19 conjunts are in the unsatisfiable core [2021-11-23 14:17:19,254 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 14:17:19,353 INFO L388 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 11 treesize of output 7 [2021-11-23 14:17:19,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:17:19,514 INFO L354 Elim1Store]: treesize reduction 33, result has 34.0 percent of original size [2021-11-23 14:17:19,515 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 31 treesize of output 39 [2021-11-23 14:17:19,621 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-23 14:17:19,621 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 14:17:22,100 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-23 14:17:22,101 INFO L388 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 117 treesize of output 115 [2021-11-23 14:17:22,212 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 33 [2021-11-23 14:17:22,257 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-23 14:17:22,257 INFO L388 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 289 treesize of output 266 [2021-11-23 14:17:22,401 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-23 14:17:22,401 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 14:17:22,401 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945333415] [2021-11-23 14:17:22,402 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 14:17:22,402 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [917791242] [2021-11-23 14:17:22,402 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [917791242] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 14:17:22,402 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-23 14:17:22,402 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-11-23 14:17:22,402 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614826841] [2021-11-23 14:17:22,403 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-23 14:17:22,404 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-23 14:17:22,404 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 14:17:22,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-23 14:17:22,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=112, Unknown=2, NotChecked=0, Total=156 [2021-11-23 14:17:22,407 INFO L87 Difference]: Start difference. First operand 27 states and 31 transitions. Second operand has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 13 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) [2021-11-23 14:17:22,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 14:17:22,599 INFO L93 Difference]: Finished difference Result 50 states and 59 transitions. [2021-11-23 14:17:22,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-23 14:17:22,601 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 13 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-11-23 14:17:22,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 14:17:22,602 INFO L225 Difference]: With dead ends: 50 [2021-11-23 14:17:22,602 INFO L226 Difference]: Without dead ends: 38 [2021-11-23 14:17:22,602 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 34 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=59, Invalid=149, Unknown=2, NotChecked=0, Total=210 [2021-11-23 14:17:22,603 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 15 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 28 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 14:17:22,604 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 65 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 57 Invalid, 0 Unknown, 28 Unchecked, 0.1s Time] [2021-11-23 14:17:22,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2021-11-23 14:17:22,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 35. [2021-11-23 14:17:22,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 34 states have (on average 1.1764705882352942) internal successors, (40), 34 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) [2021-11-23 14:17:22,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 40 transitions. [2021-11-23 14:17:22,610 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 40 transitions. Word has length 24 [2021-11-23 14:17:22,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 14:17:22,611 INFO L470 AbstractCegarLoop]: Abstraction has 35 states and 40 transitions. [2021-11-23 14:17:22,611 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 13 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) [2021-11-23 14:17:22,611 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 40 transitions. [2021-11-23 14:17:22,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-23 14:17:22,612 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 14:17:22,612 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 14:17:22,654 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efbeb6b3-02a8-4387-a9ae-106acc0292d1/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-23 14:17:22,813 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efbeb6b3-02a8-4387-a9ae-106acc0292d1/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 14:17:22,813 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 14:17:22,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 14:17:22,814 INFO L85 PathProgramCache]: Analyzing trace with hash -672376363, now seen corresponding path program 2 times [2021-11-23 14:17:22,814 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 14:17:22,814 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691016907] [2021-11-23 14:17:22,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:17:22,814 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 14:17:22,846 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 14:17:22,852 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [413706618] [2021-11-23 14:17:22,852 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-23 14:17:22,852 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 14:17:22,853 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efbeb6b3-02a8-4387-a9ae-106acc0292d1/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 14:17:22,854 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efbeb6b3-02a8-4387-a9ae-106acc0292d1/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 14:17:22,878 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efbeb6b3-02a8-4387-a9ae-106acc0292d1/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-23 14:17:22,917 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-23 14:17:22,917 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 14:17:22,920 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-23 14:17:22,922 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 14:17:23,048 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 14:17:23,048 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 14:17:23,139 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 14:17:23,139 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 14:17:23,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691016907] [2021-11-23 14:17:23,139 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 14:17:23,140 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [413706618] [2021-11-23 14:17:23,140 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [413706618] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 14:17:23,140 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-23 14:17:23,140 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2021-11-23 14:17:23,140 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276926434] [2021-11-23 14:17:23,141 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-23 14:17:23,141 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-23 14:17:23,141 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 14:17:23,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-23 14:17:23,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2021-11-23 14:17:23,143 INFO L87 Difference]: Start difference. First operand 35 states and 40 transitions. Second operand has 12 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 12 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) [2021-11-23 14:17:23,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 14:17:23,358 INFO L93 Difference]: Finished difference Result 98 states and 112 transitions. [2021-11-23 14:17:23,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-23 14:17:23,359 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 12 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 27 [2021-11-23 14:17:23,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 14:17:23,361 INFO L225 Difference]: With dead ends: 98 [2021-11-23 14:17:23,361 INFO L226 Difference]: Without dead ends: 83 [2021-11-23 14:17:23,362 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2021-11-23 14:17:23,363 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 86 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 14:17:23,363 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [86 Valid, 66 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 14:17:23,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2021-11-23 14:17:23,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 56. [2021-11-23 14:17:23,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 55 states have (on average 1.2) internal successors, (66), 55 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:17:23,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 66 transitions. [2021-11-23 14:17:23,385 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 66 transitions. Word has length 27 [2021-11-23 14:17:23,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 14:17:23,386 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 66 transitions. [2021-11-23 14:17:23,387 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 12 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) [2021-11-23 14:17:23,387 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 66 transitions. [2021-11-23 14:17:23,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-23 14:17:23,388 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 14:17:23,389 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 14:17:23,428 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efbeb6b3-02a8-4387-a9ae-106acc0292d1/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-23 14:17:23,614 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efbeb6b3-02a8-4387-a9ae-106acc0292d1/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 14:17:23,614 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 14:17:23,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 14:17:23,615 INFO L85 PathProgramCache]: Analyzing trace with hash 430403928, now seen corresponding path program 1 times [2021-11-23 14:17:23,615 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 14:17:23,615 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573448587] [2021-11-23 14:17:23,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:17:23,615 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 14:17:23,632 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 14:17:23,632 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1451070129] [2021-11-23 14:17:23,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:17:23,633 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 14:17:23,633 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efbeb6b3-02a8-4387-a9ae-106acc0292d1/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 14:17:23,634 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efbeb6b3-02a8-4387-a9ae-106acc0292d1/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 14:17:23,653 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efbeb6b3-02a8-4387-a9ae-106acc0292d1/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-23 14:17:23,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 14:17:23,737 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 27 conjunts are in the unsatisfiable core [2021-11-23 14:17:23,739 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 14:17:23,760 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2021-11-23 14:17:23,806 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-23 14:17:23,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:17:23,894 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 22 [2021-11-23 14:17:24,008 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:17:24,010 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2021-11-23 14:17:24,119 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 14:17:24,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:17:24,129 INFO L354 Elim1Store]: treesize reduction 27, result has 20.6 percent of original size [2021-11-23 14:17:24,132 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 45 treesize of output 42 [2021-11-23 14:17:24,397 INFO L354 Elim1Store]: treesize reduction 13, result has 23.5 percent of original size [2021-11-23 14:17:24,397 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 62 treesize of output 38 [2021-11-23 14:17:24,416 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 14:17:24,416 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 14:17:25,471 INFO L388 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 131 treesize of output 127 [2021-11-23 14:17:25,482 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 14:17:25,484 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 3 [2021-11-23 14:17:25,553 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 14:17:25,553 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 14:17:25,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573448587] [2021-11-23 14:17:25,553 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 14:17:25,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1451070129] [2021-11-23 14:17:25,554 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1451070129] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 14:17:25,554 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-23 14:17:25,554 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 23 [2021-11-23 14:17:25,554 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804886648] [2021-11-23 14:17:25,554 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-23 14:17:25,555 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-11-23 14:17:25,555 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 14:17:25,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-11-23 14:17:25,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=417, Unknown=0, NotChecked=0, Total=506 [2021-11-23 14:17:25,556 INFO L87 Difference]: Start difference. First operand 56 states and 66 transitions. Second operand has 23 states, 23 states have (on average 2.1739130434782608) internal successors, (50), 23 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) [2021-11-23 14:17:29,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 14:17:29,352 INFO L93 Difference]: Finished difference Result 210 states and 248 transitions. [2021-11-23 14:17:29,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-11-23 14:17:29,354 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.1739130434782608) internal successors, (50), 23 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) Word has length 28 [2021-11-23 14:17:29,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 14:17:29,356 INFO L225 Difference]: With dead ends: 210 [2021-11-23 14:17:29,356 INFO L226 Difference]: Without dead ends: 143 [2021-11-23 14:17:29,359 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 33 SyntacticMatches, 4 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 433 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=388, Invalid=1334, Unknown=0, NotChecked=0, Total=1722 [2021-11-23 14:17:29,360 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 185 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 332 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 185 SdHoareTripleChecker+Valid, 196 SdHoareTripleChecker+Invalid, 503 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 332 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 59 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-23 14:17:29,361 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [185 Valid, 196 Invalid, 503 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 332 Invalid, 0 Unknown, 59 Unchecked, 1.0s Time] [2021-11-23 14:17:29,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2021-11-23 14:17:29,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 89. [2021-11-23 14:17:29,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 88 states have (on average 1.2386363636363635) internal successors, (109), 88 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:17:29,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 109 transitions. [2021-11-23 14:17:29,376 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 109 transitions. Word has length 28 [2021-11-23 14:17:29,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 14:17:29,376 INFO L470 AbstractCegarLoop]: Abstraction has 89 states and 109 transitions. [2021-11-23 14:17:29,376 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.1739130434782608) internal successors, (50), 23 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) [2021-11-23 14:17:29,377 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 109 transitions. [2021-11-23 14:17:29,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-23 14:17:29,378 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 14:17:29,378 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 14:17:29,418 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efbeb6b3-02a8-4387-a9ae-106acc0292d1/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-11-23 14:17:29,594 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efbeb6b3-02a8-4387-a9ae-106acc0292d1/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 14:17:29,595 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 14:17:29,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 14:17:29,595 INFO L85 PathProgramCache]: Analyzing trace with hash -1487245307, now seen corresponding path program 3 times [2021-11-23 14:17:29,595 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 14:17:29,595 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822819862] [2021-11-23 14:17:29,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:17:29,596 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 14:17:29,632 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 14:17:29,643 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2120785733] [2021-11-23 14:17:29,643 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-23 14:17:29,644 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 14:17:29,644 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efbeb6b3-02a8-4387-a9ae-106acc0292d1/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 14:17:29,645 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efbeb6b3-02a8-4387-a9ae-106acc0292d1/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 14:17:29,650 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efbeb6b3-02a8-4387-a9ae-106acc0292d1/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-23 14:17:30,019 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-11-23 14:17:30,020 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 14:17:30,021 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 25 conjunts are in the unsatisfiable core [2021-11-23 14:17:30,023 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 14:17:30,184 INFO L388 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 11 treesize of output 7 [2021-11-23 14:17:30,297 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:17:30,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:17:30,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:17:30,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:17:30,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:17:30,309 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:17:30,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:17:30,311 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:17:30,312 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:17:30,313 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:17:30,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:17:30,317 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 14:17:30,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:17:30,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:17:30,319 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 14:17:30,323 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 14:17:30,338 INFO L354 Elim1Store]: treesize reduction 27, result has 3.6 percent of original size [2021-11-23 14:17:30,339 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 4 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 9 new quantified variables, introduced 10 case distinctions, treesize of input 229 treesize of output 397 [2021-11-23 14:17:30,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:17:30,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:17:30,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:17:30,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:17:30,408 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:17:30,410 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:17:30,411 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 14:17:30,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:17:30,416 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:17:30,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:17:30,419 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 14:17:30,420 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 14:17:30,430 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-11-23 14:17:30,431 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 4 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 8 case distinctions, treesize of input 176 treesize of output 111 [2021-11-23 14:17:30,499 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-23 14:17:30,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:17:30,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:17:30,538 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:17:30,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:17:30,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:17:30,542 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:17:30,543 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 14:17:30,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:17:30,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:17:30,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:17:30,548 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 14:17:30,548 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 14:17:30,554 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-11-23 14:17:30,555 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 4 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 8 case distinctions, treesize of input 228 treesize of output 137 [2021-11-23 14:17:30,571 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:17:30,572 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:17:30,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:17:30,574 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:17:30,575 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:17:30,576 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 14:17:30,577 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:17:30,578 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 14:17:30,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:17:30,580 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 14:17:30,586 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-11-23 14:17:30,586 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 216 treesize of output 115 [2021-11-23 14:17:30,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:17:31,506 INFO L354 Elim1Store]: treesize reduction 1746, result has 15.9 percent of original size [2021-11-23 14:17:31,507 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 4 stores, 7 select indices, 7 select index equivalence classes, 1 disjoint index pairs (out of 21 index pairs), introduced 11 new quantified variables, introduced 49 case distinctions, treesize of input 244 treesize of output 460 [2021-11-23 14:17:31,607 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:17:31,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:17:31,616 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:17:31,618 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:17:31,621 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:17:31,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:17:31,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:17:31,632 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:17:31,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:17:31,639 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:17:31,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:17:31,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:17:31,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:17:31,647 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 14:17:31,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:17:31,655 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 14:17:31,667 INFO L354 Elim1Store]: treesize reduction 62, result has 1.6 percent of original size [2021-11-23 14:17:31,667 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 12 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 16 case distinctions, treesize of input 200 treesize of output 129 [2021-11-23 14:17:31,862 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:17:31,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:17:31,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:17:31,869 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:17:31,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:17:31,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:17:31,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:17:31,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:17:31,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:17:31,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:17:31,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:17:31,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:17:31,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:17:31,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:17:31,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:17:31,894 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 14:17:31,897 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 14:17:31,907 INFO L354 Elim1Store]: treesize reduction 62, result has 1.6 percent of original size [2021-11-23 14:17:31,907 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 12 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 16 case distinctions, treesize of input 289 treesize of output 169 [2021-11-23 14:17:31,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:17:31,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:17:32,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:17:32,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:17:32,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:17:32,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:17:32,008 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:17:32,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:17:32,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:17:32,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:17:32,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:17:32,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:17:32,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:17:32,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:17:32,024 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:17:32,025 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 14:17:32,028 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 14:17:32,036 INFO L354 Elim1Store]: treesize reduction 62, result has 1.6 percent of original size [2021-11-23 14:17:32,037 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 12 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 16 case distinctions, treesize of input 204 treesize of output 116 [2021-11-23 14:17:32,425 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-23 14:17:32,426 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 14:17:54,999 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-23 14:17:55,000 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 6617 treesize of output 6179 [2021-11-23 14:17:58,890 INFO L354 Elim1Store]: treesize reduction 23, result has 4.2 percent of original size [2021-11-23 14:17:58,891 INFO L388 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 1116 treesize of output 1004 [2021-11-23 14:19:45,829 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-23 14:19:45,830 INFO L388 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 485 treesize of output 442 [2021-11-23 14:19:53,757 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-23 14:19:53,757 INFO L388 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 112 treesize of output 108 [2021-11-23 14:19:54,841 INFO L354 Elim1Store]: treesize reduction 23, result has 4.2 percent of original size [2021-11-23 14:19:54,842 INFO L388 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 114 treesize of output 85 [2021-11-23 14:20:38,783 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-23 14:20:38,784 INFO L388 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 112 treesize of output 108 [2021-11-23 14:20:42,798 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-23 14:20:42,798 INFO L388 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 114 treesize of output 110 [2021-11-23 14:20:47,410 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 14:20:47,411 INFO L388 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 245 treesize of output 202 [2021-11-23 14:21:23,004 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 14:21:23,006 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 14:21:23,014 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 14:21:23,019 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 14:21:23,020 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 14:21:23,020 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 14:21:23,022 INFO L388 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 105 treesize of output 78 [2021-11-23 14:21:23,101 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 14:21:23,105 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 14:21:23,117 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 14:21:23,127 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 14:21:23,129 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 14:21:23,202 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-23 14:21:23,203 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 127 treesize of output 170 [2021-11-23 14:21:23,545 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 14:21:23,546 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 14:21:23,562 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 14:21:23,563 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 14:21:23,619 INFO L354 Elim1Store]: treesize reduction 23, result has 4.2 percent of original size [2021-11-23 14:21:23,620 INFO L388 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 1186 treesize of output 1052 [2021-11-23 14:21:23,754 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-23 14:21:23,754 INFO L388 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 2136 treesize of output 1910 [2021-11-23 14:21:24,163 INFO L354 Elim1Store]: treesize reduction 23, result has 4.2 percent of original size [2021-11-23 14:21:24,163 INFO L388 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 1186 treesize of output 1 [2021-11-23 14:21:24,255 WARN L234 Elim1Store]: Array PQE input equivalent to true [2021-11-23 14:21:24,279 INFO L354 Elim1Store]: treesize reduction 23, result has 4.2 percent of original size [2021-11-23 14:21:24,279 INFO L388 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 576 treesize of output 1 [2021-11-23 14:21:24,296 INFO L354 Elim1Store]: treesize reduction 144, result has 0.7 percent of original size [2021-11-23 14:21:24,296 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 1630 treesize of output 1 [2021-11-23 14:21:24,307 WARN L234 Elim1Store]: Array PQE input equivalent to true [2021-11-23 14:21:24,316 WARN L234 Elim1Store]: Array PQE input equivalent to true [2021-11-23 14:21:24,346 INFO L354 Elim1Store]: treesize reduction 23, result has 4.2 percent of original size [2021-11-23 14:21:24,346 INFO L388 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 114 treesize of output 1 [2021-11-23 14:21:24,375 WARN L234 Elim1Store]: Array PQE input equivalent to true [2021-11-23 14:21:24,455 INFO L354 Elim1Store]: treesize reduction 23, result has 4.2 percent of original size [2021-11-23 14:21:24,456 INFO L388 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 1076 treesize of output 1 [2021-11-23 14:21:24,472 INFO L354 Elim1Store]: treesize reduction 23, result has 4.2 percent of original size [2021-11-23 14:21:24,472 INFO L388 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 576 treesize of output 1 [2021-11-23 14:21:24,493 WARN L234 Elim1Store]: Array PQE input equivalent to true [2021-11-23 14:21:24,537 INFO L354 Elim1Store]: treesize reduction 138, result has 0.7 percent of original size [2021-11-23 14:21:24,538 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 3036 treesize of output 1 [2021-11-23 14:21:24,667 INFO L354 Elim1Store]: treesize reduction 76, result has 45.3 percent of original size [2021-11-23 14:21:24,667 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 6783 treesize of output 5063 [2021-11-23 14:21:26,213 INFO L354 Elim1Store]: treesize reduction 22, result has 4.3 percent of original size [2021-11-23 14:21:26,213 INFO L388 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 542 treesize of output 1 [2021-11-23 14:21:26,264 WARN L234 Elim1Store]: Array PQE input equivalent to true [2021-11-23 14:21:35,759 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 9 refuted. 3 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-23 14:21:35,759 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 14:21:35,759 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822819862] [2021-11-23 14:21:35,759 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 14:21:35,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2120785733] [2021-11-23 14:21:35,760 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2120785733] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 14:21:35,760 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-23 14:21:35,760 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 22 [2021-11-23 14:21:35,760 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296858641] [2021-11-23 14:21:35,761 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-23 14:21:35,761 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-11-23 14:21:35,761 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 14:21:35,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-11-23 14:21:35,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=355, Unknown=12, NotChecked=0, Total=462 [2021-11-23 14:21:35,763 INFO L87 Difference]: Start difference. First operand 89 states and 109 transitions. Second operand has 22 states, 22 states have (on average 2.227272727272727) internal successors, (49), 22 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) [2021-11-23 14:21:39,201 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (select |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base|))) (and (= 1 (select .cse0 |c_ULTIMATE.start_main_~b~0#1.offset|)) (forall ((|v_ULTIMATE.start_main_~i~0#1_65| Int)) (or (let ((.cse20 (mod |c_ULTIMATE.start_main_~i~0#1| 4294967296))) (let ((.cse5 (< 2147483647 .cse20)) (.cse6 (<= .cse20 2147483647)) (.cse11 (mod (+ 4294967295 |c_ULTIMATE.start_main_~i~0#1|) 4294967296))) (and (or (and (or (forall ((|ULTIMATE.start_main_~a~0#1.base| Int)) (= (select (let ((.cse1 (let ((.cse3 (select |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base|))) (store .cse3 (+ |c_ULTIMATE.start_main_~b~0#1.offset| (* (mod |c_ULTIMATE.start_main_~i~0#1| 4294967296) 8)) (let ((.cse4 (* (mod (+ 4294967295 |c_ULTIMATE.start_main_~i~0#1|) 4294967296) 8))) (+ (select .cse3 (+ |c_ULTIMATE.start_main_~b~0#1.offset| .cse4 (- 34359738368))) (select (select |c_#memory_int| |ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse4 (- 34359738368))))))))) (store .cse1 (+ |c_ULTIMATE.start_main_~b~0#1.offset| (* (mod |v_ULTIMATE.start_main_~i~0#1_65| 4294967296) 8)) (let ((.cse2 (* (mod (+ |v_ULTIMATE.start_main_~i~0#1_65| 4294967295) 4294967296) 8))) (+ (select .cse1 (+ |c_ULTIMATE.start_main_~b~0#1.offset| .cse2 (- 34359738368))) (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse1) |ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse2 (- 34359738368))))))) |c_ULTIMATE.start_main_~b~0#1.offset|) 1)) .cse5) (or .cse6 (forall ((|ULTIMATE.start_main_~a~0#1.base| Int)) (= (select (let ((.cse7 (let ((.cse9 (select |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base|))) (store .cse9 (+ |c_ULTIMATE.start_main_~b~0#1.offset| (* (mod |c_ULTIMATE.start_main_~i~0#1| 4294967296) 8) (- 34359738368)) (let ((.cse10 (* (mod (+ 4294967295 |c_ULTIMATE.start_main_~i~0#1|) 4294967296) 8))) (+ (select .cse9 (+ |c_ULTIMATE.start_main_~b~0#1.offset| .cse10 (- 34359738368))) (select (select |c_#memory_int| |ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse10 (- 34359738368))))))))) (store .cse7 (+ |c_ULTIMATE.start_main_~b~0#1.offset| (* (mod |v_ULTIMATE.start_main_~i~0#1_65| 4294967296) 8)) (let ((.cse8 (* (mod (+ |v_ULTIMATE.start_main_~i~0#1_65| 4294967295) 4294967296) 8))) (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse7) |ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse8 (- 34359738368))) (select .cse7 (+ |c_ULTIMATE.start_main_~b~0#1.offset| .cse8 (- 34359738368))))))) |c_ULTIMATE.start_main_~b~0#1.offset|) 1)))) (<= .cse11 2147483647)) (or (and (or .cse5 (forall ((|ULTIMATE.start_main_~a~0#1.base| Int)) (= (select (let ((.cse12 (let ((.cse14 (select |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base|))) (store .cse14 (+ |c_ULTIMATE.start_main_~b~0#1.offset| (* (mod |c_ULTIMATE.start_main_~i~0#1| 4294967296) 8)) (let ((.cse15 (* (mod (+ 4294967295 |c_ULTIMATE.start_main_~i~0#1|) 4294967296) 8))) (+ (select .cse14 (+ |c_ULTIMATE.start_main_~b~0#1.offset| .cse15)) (select (select |c_#memory_int| |ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse15)))))))) (store .cse12 (+ |c_ULTIMATE.start_main_~b~0#1.offset| (* (mod |v_ULTIMATE.start_main_~i~0#1_65| 4294967296) 8)) (let ((.cse13 (* (mod (+ |v_ULTIMATE.start_main_~i~0#1_65| 4294967295) 4294967296) 8))) (+ (select .cse12 (+ |c_ULTIMATE.start_main_~b~0#1.offset| .cse13 (- 34359738368))) (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse12) |ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse13 (- 34359738368))))))) |c_ULTIMATE.start_main_~b~0#1.offset|) 1))) (or .cse6 (forall ((|ULTIMATE.start_main_~a~0#1.base| Int)) (= (select (let ((.cse16 (let ((.cse18 (select |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base|))) (store .cse18 (+ |c_ULTIMATE.start_main_~b~0#1.offset| (* (mod |c_ULTIMATE.start_main_~i~0#1| 4294967296) 8) (- 34359738368)) (let ((.cse19 (* (mod (+ 4294967295 |c_ULTIMATE.start_main_~i~0#1|) 4294967296) 8))) (+ (select .cse18 (+ |c_ULTIMATE.start_main_~b~0#1.offset| .cse19)) (select (select |c_#memory_int| |ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse19)))))))) (store .cse16 (+ |c_ULTIMATE.start_main_~b~0#1.offset| (* (mod |v_ULTIMATE.start_main_~i~0#1_65| 4294967296) 8)) (let ((.cse17 (* (mod (+ |v_ULTIMATE.start_main_~i~0#1_65| 4294967295) 4294967296) 8))) (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse16) |ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse17 (- 34359738368))) (select .cse16 (+ |c_ULTIMATE.start_main_~b~0#1.offset| .cse17 (- 34359738368))))))) |c_ULTIMATE.start_main_~b~0#1.offset|) 1)))) (< 2147483647 .cse11))))) (< |v_ULTIMATE.start_main_~i~0#1_65| (+ |c_ULTIMATE.start_main_~i~0#1| 1)) (<= c_~N~0 |v_ULTIMATE.start_main_~i~0#1_65|))) (exists ((|ULTIMATE.start_main_~i~0#1| Int) (|ULTIMATE.start_main_~a~0#1.base| Int)) (let ((.cse22 (select |c_#memory_int| |ULTIMATE.start_main_~a~0#1.base|)) (.cse21 (select |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base|))) (and (= (select .cse21 (+ |c_ULTIMATE.start_main_~b~0#1.offset| 8)) (+ (select .cse22 0) 1)) (< |ULTIMATE.start_main_~i~0#1| 2147483647) (<= 2 |ULTIMATE.start_main_~i~0#1|) (= (let ((.cse23 (* (mod (+ 4294967295 |ULTIMATE.start_main_~i~0#1|) 4294967296) 8))) (+ (select .cse22 .cse23) (select .cse21 (+ |c_ULTIMATE.start_main_~b~0#1.offset| .cse23)))) (select .cse21 (+ |c_ULTIMATE.start_main_~b~0#1.offset| (* (mod |ULTIMATE.start_main_~i~0#1| 4294967296) 8))))))) (= |c_ULTIMATE.start_main_~b~0#1.offset| 0) (or (= (select (store .cse0 (+ |c_ULTIMATE.start_main_~b~0#1.offset| (* (mod |c_ULTIMATE.start_main_~i~0#1| 4294967296) 8)) (let ((.cse24 (* (mod (+ 4294967295 |c_ULTIMATE.start_main_~i~0#1|) 4294967296) 8))) (+ (select .cse0 (+ |c_ULTIMATE.start_main_~b~0#1.offset| .cse24 (- 34359738368))) (select (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse24 (- 34359738368)))))) |c_ULTIMATE.start_main_~b~0#1.offset|) 1) (<= c_~N~0 |c_ULTIMATE.start_main_~i~0#1|)))) is different from false [2021-11-23 14:21:41,257 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((|v_ULTIMATE.start_main_~i~0#1_65| Int)) (or (let ((.cse19 (mod |c_ULTIMATE.start_main_~i~0#1| 4294967296))) (let ((.cse4 (< 2147483647 .cse19)) (.cse5 (<= .cse19 2147483647)) (.cse10 (mod (+ 4294967295 |c_ULTIMATE.start_main_~i~0#1|) 4294967296))) (and (or (and (or (forall ((|ULTIMATE.start_main_~a~0#1.base| Int)) (= (select (let ((.cse0 (let ((.cse2 (select |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base|))) (store .cse2 (+ |c_ULTIMATE.start_main_~b~0#1.offset| (* (mod |c_ULTIMATE.start_main_~i~0#1| 4294967296) 8)) (let ((.cse3 (* (mod (+ 4294967295 |c_ULTIMATE.start_main_~i~0#1|) 4294967296) 8))) (+ (select .cse2 (+ |c_ULTIMATE.start_main_~b~0#1.offset| .cse3 (- 34359738368))) (select (select |c_#memory_int| |ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse3 (- 34359738368))))))))) (store .cse0 (+ |c_ULTIMATE.start_main_~b~0#1.offset| (* (mod |v_ULTIMATE.start_main_~i~0#1_65| 4294967296) 8)) (let ((.cse1 (* (mod (+ |v_ULTIMATE.start_main_~i~0#1_65| 4294967295) 4294967296) 8))) (+ (select .cse0 (+ |c_ULTIMATE.start_main_~b~0#1.offset| .cse1 (- 34359738368))) (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse0) |ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse1 (- 34359738368))))))) |c_ULTIMATE.start_main_~b~0#1.offset|) 1)) .cse4) (or .cse5 (forall ((|ULTIMATE.start_main_~a~0#1.base| Int)) (= (select (let ((.cse6 (let ((.cse8 (select |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base|))) (store .cse8 (+ |c_ULTIMATE.start_main_~b~0#1.offset| (* (mod |c_ULTIMATE.start_main_~i~0#1| 4294967296) 8) (- 34359738368)) (let ((.cse9 (* (mod (+ 4294967295 |c_ULTIMATE.start_main_~i~0#1|) 4294967296) 8))) (+ (select .cse8 (+ |c_ULTIMATE.start_main_~b~0#1.offset| .cse9 (- 34359738368))) (select (select |c_#memory_int| |ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse9 (- 34359738368))))))))) (store .cse6 (+ |c_ULTIMATE.start_main_~b~0#1.offset| (* (mod |v_ULTIMATE.start_main_~i~0#1_65| 4294967296) 8)) (let ((.cse7 (* (mod (+ |v_ULTIMATE.start_main_~i~0#1_65| 4294967295) 4294967296) 8))) (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse6) |ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse7 (- 34359738368))) (select .cse6 (+ |c_ULTIMATE.start_main_~b~0#1.offset| .cse7 (- 34359738368))))))) |c_ULTIMATE.start_main_~b~0#1.offset|) 1)))) (<= .cse10 2147483647)) (or (and (or .cse4 (forall ((|ULTIMATE.start_main_~a~0#1.base| Int)) (= (select (let ((.cse11 (let ((.cse13 (select |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base|))) (store .cse13 (+ |c_ULTIMATE.start_main_~b~0#1.offset| (* (mod |c_ULTIMATE.start_main_~i~0#1| 4294967296) 8)) (let ((.cse14 (* (mod (+ 4294967295 |c_ULTIMATE.start_main_~i~0#1|) 4294967296) 8))) (+ (select .cse13 (+ |c_ULTIMATE.start_main_~b~0#1.offset| .cse14)) (select (select |c_#memory_int| |ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse14)))))))) (store .cse11 (+ |c_ULTIMATE.start_main_~b~0#1.offset| (* (mod |v_ULTIMATE.start_main_~i~0#1_65| 4294967296) 8)) (let ((.cse12 (* (mod (+ |v_ULTIMATE.start_main_~i~0#1_65| 4294967295) 4294967296) 8))) (+ (select .cse11 (+ |c_ULTIMATE.start_main_~b~0#1.offset| .cse12 (- 34359738368))) (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse11) |ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse12 (- 34359738368))))))) |c_ULTIMATE.start_main_~b~0#1.offset|) 1))) (or .cse5 (forall ((|ULTIMATE.start_main_~a~0#1.base| Int)) (= (select (let ((.cse15 (let ((.cse17 (select |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base|))) (store .cse17 (+ |c_ULTIMATE.start_main_~b~0#1.offset| (* (mod |c_ULTIMATE.start_main_~i~0#1| 4294967296) 8) (- 34359738368)) (let ((.cse18 (* (mod (+ 4294967295 |c_ULTIMATE.start_main_~i~0#1|) 4294967296) 8))) (+ (select .cse17 (+ |c_ULTIMATE.start_main_~b~0#1.offset| .cse18)) (select (select |c_#memory_int| |ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse18)))))))) (store .cse15 (+ |c_ULTIMATE.start_main_~b~0#1.offset| (* (mod |v_ULTIMATE.start_main_~i~0#1_65| 4294967296) 8)) (let ((.cse16 (* (mod (+ |v_ULTIMATE.start_main_~i~0#1_65| 4294967295) 4294967296) 8))) (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse15) |ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse16 (- 34359738368))) (select .cse15 (+ |c_ULTIMATE.start_main_~b~0#1.offset| .cse16 (- 34359738368))))))) |c_ULTIMATE.start_main_~b~0#1.offset|) 1)))) (< 2147483647 .cse10))))) (< |v_ULTIMATE.start_main_~i~0#1_65| (+ |c_ULTIMATE.start_main_~i~0#1| 1)) (<= c_~N~0 |v_ULTIMATE.start_main_~i~0#1_65|))) (= (select (let ((.cse20 (select |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base|))) (store .cse20 (+ |c_ULTIMATE.start_main_~b~0#1.offset| (* (mod |c_ULTIMATE.start_main_~i~0#1| 4294967296) 8)) (let ((.cse21 (* (mod (+ 4294967295 |c_ULTIMATE.start_main_~i~0#1|) 4294967296) 8))) (+ (select .cse20 (+ |c_ULTIMATE.start_main_~b~0#1.offset| .cse21 (- 34359738368))) (select (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse21 (- 34359738368))))))) |c_ULTIMATE.start_main_~b~0#1.offset|) 1)) is different from false [2021-11-23 14:21:49,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 14:21:49,234 INFO L93 Difference]: Finished difference Result 179 states and 226 transitions. [2021-11-23 14:21:49,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-23 14:21:49,235 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.227272727272727) internal successors, (49), 22 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 30 [2021-11-23 14:21:49,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 14:21:49,237 INFO L225 Difference]: With dead ends: 179 [2021-11-23 14:21:49,237 INFO L226 Difference]: Without dead ends: 139 [2021-11-23 14:21:49,238 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 39 SyntacticMatches, 2 SemanticMatches, 33 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 282 ImplicationChecksByTransitivity, 40.2s TimeCoverageRelationStatistics Valid=224, Invalid=823, Unknown=17, NotChecked=126, Total=1190 [2021-11-23 14:21:49,239 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 47 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 372 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 135 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-23 14:21:49,240 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 84 Invalid, 372 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 193 Invalid, 0 Unknown, 135 Unchecked, 0.5s Time] [2021-11-23 14:21:49,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2021-11-23 14:21:49,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 116. [2021-11-23 14:21:49,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 115 states have (on average 1.2695652173913043) internal successors, (146), 115 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:21:49,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 146 transitions. [2021-11-23 14:21:49,294 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 146 transitions. Word has length 30 [2021-11-23 14:21:49,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 14:21:49,295 INFO L470 AbstractCegarLoop]: Abstraction has 116 states and 146 transitions. [2021-11-23 14:21:49,295 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 2.227272727272727) internal successors, (49), 22 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) [2021-11-23 14:21:49,295 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 146 transitions. [2021-11-23 14:21:49,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-11-23 14:21:49,300 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 14:21:49,300 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 14:21:49,309 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efbeb6b3-02a8-4387-a9ae-106acc0292d1/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-23 14:21:49,505 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efbeb6b3-02a8-4387-a9ae-106acc0292d1/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 14:21:49,506 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 14:21:49,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 14:21:49,506 INFO L85 PathProgramCache]: Analyzing trace with hash -1708848056, now seen corresponding path program 2 times [2021-11-23 14:21:49,507 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 14:21:49,507 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188258177] [2021-11-23 14:21:49,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:21:49,507 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 14:21:49,555 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 14:21:49,555 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [306768481] [2021-11-23 14:21:49,555 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-23 14:21:49,555 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 14:21:49,556 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efbeb6b3-02a8-4387-a9ae-106acc0292d1/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 14:21:49,558 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efbeb6b3-02a8-4387-a9ae-106acc0292d1/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 14:21:49,565 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efbeb6b3-02a8-4387-a9ae-106acc0292d1/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-23 14:21:49,612 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-23 14:21:49,613 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 14:21:49,614 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-23 14:21:49,616 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 14:21:49,755 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 22 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-23 14:21:49,755 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 14:21:49,898 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 22 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-23 14:21:49,899 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 14:21:49,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188258177] [2021-11-23 14:21:49,899 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 14:21:49,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [306768481] [2021-11-23 14:21:49,900 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [306768481] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 14:21:49,900 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-23 14:21:49,900 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 15 [2021-11-23 14:21:49,900 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543470350] [2021-11-23 14:21:49,901 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-23 14:21:49,901 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-23 14:21:49,901 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 14:21:49,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-23 14:21:49,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2021-11-23 14:21:49,903 INFO L87 Difference]: Start difference. First operand 116 states and 146 transitions. Second operand has 15 states, 15 states have (on average 3.1333333333333333) internal successors, (47), 15 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:21:50,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 14:21:50,487 INFO L93 Difference]: Finished difference Result 259 states and 315 transitions. [2021-11-23 14:21:50,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-23 14:21:50,488 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.1333333333333333) internal successors, (47), 15 states have internal predecessors, (47), 0 states have call successors, (0), 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 [2021-11-23 14:21:50,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 14:21:50,490 INFO L225 Difference]: With dead ends: 259 [2021-11-23 14:21:50,490 INFO L226 Difference]: Without dead ends: 203 [2021-11-23 14:21:50,491 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=158, Invalid=394, Unknown=0, NotChecked=0, Total=552 [2021-11-23 14:21:50,492 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 142 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 223 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-23 14:21:50,492 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [142 Valid, 122 Invalid, 280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 223 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-23 14:21:50,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2021-11-23 14:21:50,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 152. [2021-11-23 14:21:50,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 151 states have (on average 1.2450331125827814) internal successors, (188), 151 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:21:50,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 188 transitions. [2021-11-23 14:21:50,519 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 188 transitions. Word has length 37 [2021-11-23 14:21:50,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 14:21:50,520 INFO L470 AbstractCegarLoop]: Abstraction has 152 states and 188 transitions. [2021-11-23 14:21:50,520 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.1333333333333333) internal successors, (47), 15 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:21:50,520 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 188 transitions. [2021-11-23 14:21:50,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-11-23 14:21:50,522 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 14:21:50,522 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 14:21:50,557 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efbeb6b3-02a8-4387-a9ae-106acc0292d1/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-23 14:21:50,738 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efbeb6b3-02a8-4387-a9ae-106acc0292d1/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 14:21:50,739 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 14:21:50,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 14:21:50,739 INFO L85 PathProgramCache]: Analyzing trace with hash 1173959464, now seen corresponding path program 3 times [2021-11-23 14:21:50,739 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 14:21:50,739 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798335512] [2021-11-23 14:21:50,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:21:50,740 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 14:21:50,773 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 14:21:50,774 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [837395795] [2021-11-23 14:21:50,783 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-23 14:21:50,783 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 14:21:50,783 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efbeb6b3-02a8-4387-a9ae-106acc0292d1/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 14:21:50,784 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efbeb6b3-02a8-4387-a9ae-106acc0292d1/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 14:21:50,806 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efbeb6b3-02a8-4387-a9ae-106acc0292d1/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-23 14:21:50,925 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-11-23 14:21:50,926 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 14:21:50,927 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-23 14:21:50,929 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 14:21:51,297 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 20 proven. 7 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-23 14:21:51,297 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 14:21:51,695 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 20 proven. 7 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-23 14:21:51,695 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 14:21:51,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798335512] [2021-11-23 14:21:51,695 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 14:21:51,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [837395795] [2021-11-23 14:21:51,696 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [837395795] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 14:21:51,696 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-23 14:21:51,696 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 20 [2021-11-23 14:21:51,696 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549166936] [2021-11-23 14:21:51,696 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-23 14:21:51,697 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-23 14:21:51,697 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 14:21:51,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-23 14:21:51,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=281, Unknown=0, NotChecked=0, Total=380 [2021-11-23 14:21:51,698 INFO L87 Difference]: Start difference. First operand 152 states and 188 transitions. Second operand has 20 states, 20 states have (on average 2.45) internal successors, (49), 20 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) [2021-11-23 14:21:52,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 14:21:52,983 INFO L93 Difference]: Finished difference Result 195 states and 229 transitions. [2021-11-23 14:21:52,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-11-23 14:21:52,984 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.45) internal successors, (49), 20 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 37 [2021-11-23 14:21:52,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 14:21:52,986 INFO L225 Difference]: With dead ends: 195 [2021-11-23 14:21:52,986 INFO L226 Difference]: Without dead ends: 186 [2021-11-23 14:21:52,987 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 56 SyntacticMatches, 2 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 495 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=450, Invalid=1530, Unknown=0, NotChecked=0, Total=1980 [2021-11-23 14:21:52,987 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 194 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 249 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 194 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 368 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-23 14:21:52,988 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [194 Valid, 100 Invalid, 368 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 249 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-23 14:21:52,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2021-11-23 14:21:53,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 152. [2021-11-23 14:21:53,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 151 states have (on average 1.2317880794701987) internal successors, (186), 151 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:21:53,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 186 transitions. [2021-11-23 14:21:53,007 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 186 transitions. Word has length 37 [2021-11-23 14:21:53,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 14:21:53,008 INFO L470 AbstractCegarLoop]: Abstraction has 152 states and 186 transitions. [2021-11-23 14:21:53,008 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.45) internal successors, (49), 20 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) [2021-11-23 14:21:53,008 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 186 transitions. [2021-11-23 14:21:53,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-23 14:21:53,010 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 14:21:53,010 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 14:21:53,042 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efbeb6b3-02a8-4387-a9ae-106acc0292d1/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-23 14:21:53,234 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efbeb6b3-02a8-4387-a9ae-106acc0292d1/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 14:21:53,235 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 14:21:53,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 14:21:53,235 INFO L85 PathProgramCache]: Analyzing trace with hash 1129715953, now seen corresponding path program 4 times [2021-11-23 14:21:53,235 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 14:21:53,235 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691192897] [2021-11-23 14:21:53,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:21:53,236 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 14:21:53,253 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 14:21:53,253 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1554889402] [2021-11-23 14:21:53,253 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-23 14:21:53,253 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 14:21:53,254 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efbeb6b3-02a8-4387-a9ae-106acc0292d1/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 14:21:53,267 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efbeb6b3-02a8-4387-a9ae-106acc0292d1/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 14:21:53,268 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efbeb6b3-02a8-4387-a9ae-106acc0292d1/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-23 14:21:53,488 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-23 14:21:53,488 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 14:21:53,490 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 37 conjunts are in the unsatisfiable core [2021-11-23 14:21:53,492 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 14:21:53,506 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2021-11-23 14:21:53,544 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-23 14:21:53,626 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 14:21:53,628 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:21:53,629 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:21:53,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:21:53,631 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:21:53,632 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:21:53,633 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:21:53,635 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 4 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 179 treesize of output 245 [2021-11-23 14:21:53,717 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-23 14:21:53,755 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-23 14:21:53,808 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:21:53,809 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:21:53,810 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:21:53,812 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 87 treesize of output 51 [2021-11-23 14:21:53,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:21:53,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:21:53,827 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:21:53,829 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 115 treesize of output 54 [2021-11-23 14:21:53,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:21:53,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:21:53,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:21:53,840 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 126 treesize of output 57 [2021-11-23 14:21:53,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:21:53,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:21:53,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:21:53,945 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 36 [2021-11-23 14:21:54,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:21:54,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:21:54,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:21:54,074 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 44 [2021-11-23 14:21:54,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:21:54,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:21:54,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:21:54,213 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:21:54,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:21:54,216 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:21:54,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:21:54,219 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:21:54,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:21:54,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:21:54,224 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:21:54,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:21:54,226 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 14:21:54,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:21:54,233 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:21:54,234 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 14:21:54,235 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:21:54,236 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:21:54,237 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 14:21:54,239 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:21:54,239 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 14:21:54,300 INFO L354 Elim1Store]: treesize reduction 86, result has 18.1 percent of original size [2021-11-23 14:21:54,300 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 4 stores, 8 select indices, 8 select index equivalence classes, 10 disjoint index pairs (out of 28 index pairs), introduced 12 new quantified variables, introduced 30 case distinctions, treesize of input 254 treesize of output 506 [2021-11-23 14:21:54,385 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-23 14:21:54,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:21:54,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:21:54,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:21:54,819 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:21:54,820 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 14:21:54,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:21:54,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:21:54,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:21:54,825 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:21:54,827 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:21:54,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:21:54,829 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 10 disjoint index pairs (out of 28 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 375 treesize of output 228 [2021-11-23 14:21:54,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:21:54,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:21:54,919 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 14:21:54,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:21:54,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:21:54,922 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:21:54,923 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:21:54,923 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:21:54,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:21:54,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:21:54,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:21:54,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:21:54,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:21:54,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:21:54,930 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 14:21:54,939 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-11-23 14:21:54,939 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 12 disjoint index pairs (out of 28 index pairs), introduced 7 new quantified variables, introduced 15 case distinctions, treesize of input 346 treesize of output 206 [2021-11-23 14:21:54,967 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 14:21:54,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:21:54,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:21:54,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:21:54,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:21:54,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:21:54,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:21:54,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:21:54,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:21:54,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:21:54,980 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 14:21:54,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:21:54,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:21:54,982 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 14:21:54,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:21:54,984 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 14:21:54,995 INFO L354 Elim1Store]: treesize reduction 33, result has 8.3 percent of original size [2021-11-23 14:21:54,995 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 9 disjoint index pairs (out of 36 index pairs), introduced 8 new quantified variables, introduced 26 case distinctions, treesize of input 255 treesize of output 114 [2021-11-23 14:21:55,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:21:55,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:21:55,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:21:55,181 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 14:21:55,182 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 14:21:55,183 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:21:55,195 INFO L354 Elim1Store]: treesize reduction 35, result has 16.7 percent of original size [2021-11-23 14:21:55,195 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 11 case distinctions, treesize of input 73 treesize of output 66 [2021-11-23 14:21:55,809 INFO L354 Elim1Store]: treesize reduction 21, result has 16.0 percent of original size [2021-11-23 14:21:55,810 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 82 treesize of output 46 [2021-11-23 14:21:55,852 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 14:21:55,853 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 14:22:10,724 INFO L388 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 3202990 treesize of output 3065774 [2021-11-23 14:24:43,807 WARN L227 SmtUtils]: Spent 2.55m on a formula simplification. DAG size of input: 735 DAG size of output: 717 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-23 14:24:43,860 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-23 14:24:43,862 INFO L388 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 1479990 treesize of output 1224006 [2021-11-23 14:25:26,266 WARN L227 SmtUtils]: Spent 42.40s on a formula simplification. DAG size of input: 457 DAG size of output: 456 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-23 14:25:34,242 WARN L227 SmtUtils]: Spent 7.84s on a formula simplification that was a NOOP. DAG size: 458 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-23 14:26:48,822 WARN L227 SmtUtils]: Spent 10.32s on a formula simplification. DAG size of input: 434 DAG size of output: 434 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-23 14:27:05,605 WARN L227 SmtUtils]: Spent 10.72s on a formula simplification. DAG size of input: 434 DAG size of output: 434 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-23 14:27:30,769 WARN L227 SmtUtils]: Spent 16.96s on a formula simplification. DAG size of input: 436 DAG size of output: 436 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-23 14:28:35,427 WARN L227 SmtUtils]: Spent 8.87s on a formula simplification. DAG size of input: 427 DAG size of output: 427 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-23 14:28:47,523 WARN L227 SmtUtils]: Spent 5.20s on a formula simplification that was a NOOP. DAG size: 429 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-23 14:29:04,879 WARN L227 SmtUtils]: Spent 8.90s on a formula simplification. DAG size of input: 427 DAG size of output: 427 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-23 14:29:30,607 WARN L227 SmtUtils]: Spent 8.99s on a formula simplification. DAG size of input: 427 DAG size of output: 427 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-23 14:30:28,685 WARN L227 SmtUtils]: Spent 9.14s on a formula simplification. DAG size of input: 427 DAG size of output: 427 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify)