./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-patterns/array23_pattern.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49d85ad4-41bf-4f4c-98b7-09f890c2675e/bin/uautomizer-DQz5hQGWxF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49d85ad4-41bf-4f4c-98b7-09f890c2675e/bin/uautomizer-DQz5hQGWxF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49d85ad4-41bf-4f4c-98b7-09f890c2675e/bin/uautomizer-DQz5hQGWxF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49d85ad4-41bf-4f4c-98b7-09f890c2675e/bin/uautomizer-DQz5hQGWxF/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-patterns/array23_pattern.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49d85ad4-41bf-4f4c-98b7-09f890c2675e/bin/uautomizer-DQz5hQGWxF/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49d85ad4-41bf-4f4c-98b7-09f890c2675e/bin/uautomizer-DQz5hQGWxF --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 e6bb9e1c9705c406859f1248122e92b7c01da6449c586b213f4fa087ea45e218 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 07:38:03,911 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 07:38:03,914 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 07:38:03,977 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 07:38:03,978 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 07:38:03,983 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 07:38:03,984 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 07:38:03,989 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 07:38:03,992 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 07:38:03,995 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 07:38:03,996 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 07:38:03,997 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 07:38:03,997 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 07:38:04,003 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 07:38:04,005 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 07:38:04,006 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 07:38:04,007 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 07:38:04,008 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 07:38:04,010 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 07:38:04,019 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 07:38:04,021 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 07:38:04,022 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 07:38:04,029 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 07:38:04,030 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 07:38:04,040 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 07:38:04,040 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 07:38:04,041 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 07:38:04,042 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 07:38:04,042 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 07:38:04,043 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 07:38:04,044 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 07:38:04,045 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 07:38:04,045 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 07:38:04,046 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 07:38:04,047 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 07:38:04,048 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 07:38:04,050 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 07:38:04,052 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 07:38:04,052 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 07:38:04,053 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 07:38:04,053 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 07:38:04,054 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49d85ad4-41bf-4f4c-98b7-09f890c2675e/bin/uautomizer-DQz5hQGWxF/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-20 07:38:04,102 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 07:38:04,102 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 07:38:04,103 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 07:38:04,103 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 07:38:04,110 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 07:38:04,110 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 07:38:04,111 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-20 07:38:04,111 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-20 07:38:04,111 INFO L138 SettingsManager]: * Use SBE=true [2021-11-20 07:38:04,111 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 07:38:04,111 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-20 07:38:04,112 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 07:38:04,112 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-20 07:38:04,112 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 07:38:04,112 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-20 07:38:04,112 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 07:38:04,112 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-20 07:38:04,113 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-20 07:38:04,113 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-20 07:38:04,113 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 07:38:04,113 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-20 07:38:04,114 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 07:38:04,114 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-20 07:38:04,114 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 07:38:04,114 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 07:38:04,114 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 07:38:04,114 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 07:38:04,115 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-20 07:38:04,115 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-20 07:38:04,115 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-20 07:38:04,115 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-20 07:38:04,115 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-20 07:38:04,116 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-20 07:38:04,116 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 07:38:04,116 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_49d85ad4-41bf-4f4c-98b7-09f890c2675e/bin/uautomizer-DQz5hQGWxF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49d85ad4-41bf-4f4c-98b7-09f890c2675e/bin/uautomizer-DQz5hQGWxF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e6bb9e1c9705c406859f1248122e92b7c01da6449c586b213f4fa087ea45e218 [2021-11-20 07:38:04,381 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 07:38:04,428 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 07:38:04,431 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 07:38:04,432 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 07:38:04,433 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 07:38:04,435 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49d85ad4-41bf-4f4c-98b7-09f890c2675e/bin/uautomizer-DQz5hQGWxF/../../sv-benchmarks/c/array-patterns/array23_pattern.c [2021-11-20 07:38:04,508 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49d85ad4-41bf-4f4c-98b7-09f890c2675e/bin/uautomizer-DQz5hQGWxF/data/bdc1fdc28/abea8a146068475e9258efbe947f06b9/FLAG43617fe1f [2021-11-20 07:38:04,945 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 07:38:04,945 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49d85ad4-41bf-4f4c-98b7-09f890c2675e/sv-benchmarks/c/array-patterns/array23_pattern.c [2021-11-20 07:38:04,952 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49d85ad4-41bf-4f4c-98b7-09f890c2675e/bin/uautomizer-DQz5hQGWxF/data/bdc1fdc28/abea8a146068475e9258efbe947f06b9/FLAG43617fe1f [2021-11-20 07:38:05,352 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49d85ad4-41bf-4f4c-98b7-09f890c2675e/bin/uautomizer-DQz5hQGWxF/data/bdc1fdc28/abea8a146068475e9258efbe947f06b9 [2021-11-20 07:38:05,355 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 07:38:05,358 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 07:38:05,364 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 07:38:05,364 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 07:38:05,367 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 07:38:05,368 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 07:38:05" (1/1) ... [2021-11-20 07:38:05,369 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52e97268 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:38:05, skipping insertion in model container [2021-11-20 07:38:05,369 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 07:38:05" (1/1) ... [2021-11-20 07:38:05,385 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 07:38:05,399 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 07:38:05,544 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_49d85ad4-41bf-4f4c-98b7-09f890c2675e/sv-benchmarks/c/array-patterns/array23_pattern.c[1347,1360] [2021-11-20 07:38:05,619 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 07:38:05,641 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 07:38:05,663 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_49d85ad4-41bf-4f4c-98b7-09f890c2675e/sv-benchmarks/c/array-patterns/array23_pattern.c[1347,1360] [2021-11-20 07:38:05,679 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 07:38:05,699 INFO L208 MainTranslator]: Completed translation [2021-11-20 07:38:05,699 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:38:05 WrapperNode [2021-11-20 07:38:05,699 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 07:38:05,700 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 07:38:05,701 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 07:38:05,701 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 07:38:05,708 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:38:05" (1/1) ... [2021-11-20 07:38:05,725 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:38:05" (1/1) ... [2021-11-20 07:38:05,763 INFO L137 Inliner]: procedures = 17, calls = 22, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 108 [2021-11-20 07:38:05,765 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 07:38:05,766 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 07:38:05,767 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 07:38:05,767 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 07:38:05,775 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:38:05" (1/1) ... [2021-11-20 07:38:05,776 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:38:05" (1/1) ... [2021-11-20 07:38:05,784 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:38:05" (1/1) ... [2021-11-20 07:38:05,784 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:38:05" (1/1) ... [2021-11-20 07:38:05,799 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:38:05" (1/1) ... [2021-11-20 07:38:05,810 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:38:05" (1/1) ... [2021-11-20 07:38:05,812 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:38:05" (1/1) ... [2021-11-20 07:38:05,820 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 07:38:05,821 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 07:38:05,824 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 07:38:05,824 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 07:38:05,825 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:38:05" (1/1) ... [2021-11-20 07:38:05,834 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 07:38:05,847 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49d85ad4-41bf-4f4c-98b7-09f890c2675e/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:38:05,861 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49d85ad4-41bf-4f4c-98b7-09f890c2675e/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 07:38:05,865 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49d85ad4-41bf-4f4c-98b7-09f890c2675e/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 07:38:05,903 INFO L130 BoogieDeclarations]: Found specification of procedure outerBoundaryPatternCheck [2021-11-20 07:38:05,903 INFO L138 BoogieDeclarations]: Found implementation of procedure outerBoundaryPatternCheck [2021-11-20 07:38:05,903 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 07:38:05,904 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-20 07:38:05,904 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-20 07:38:05,904 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-20 07:38:05,904 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-20 07:38:05,904 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-20 07:38:05,904 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 07:38:05,905 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 07:38:05,905 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-20 07:38:05,905 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-20 07:38:05,976 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 07:38:05,978 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 07:38:06,182 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 07:38:06,188 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 07:38:06,188 INFO L301 CfgBuilder]: Removed 5 assume(true) statements. [2021-11-20 07:38:06,190 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:38:06 BoogieIcfgContainer [2021-11-20 07:38:06,190 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 07:38:06,192 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 07:38:06,192 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 07:38:06,195 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 07:38:06,196 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 07:38:05" (1/3) ... [2021-11-20 07:38:06,196 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bf192bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 07:38:06, skipping insertion in model container [2021-11-20 07:38:06,197 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:38:05" (2/3) ... [2021-11-20 07:38:06,197 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bf192bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 07:38:06, skipping insertion in model container [2021-11-20 07:38:06,197 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:38:06" (3/3) ... [2021-11-20 07:38:06,198 INFO L111 eAbstractionObserver]: Analyzing ICFG array23_pattern.c [2021-11-20 07:38:06,203 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 07:38:06,204 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-20 07:38:06,253 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 07:38:06,260 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 [2021-11-20 07:38:06,261 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-20 07:38:06,301 INFO L276 IsEmpty]: Start isEmpty. Operand has 41 states, 32 states have (on average 1.53125) internal successors, (49), 33 states have internal predecessors, (49), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-11-20 07:38:06,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-20 07:38:06,307 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:38:06,307 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:38:06,308 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:38:06,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:38:06,325 INFO L85 PathProgramCache]: Analyzing trace with hash -1798908762, now seen corresponding path program 1 times [2021-11-20 07:38:06,334 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:38:06,335 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501352463] [2021-11-20 07:38:06,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:38:06,336 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:38:06,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:38:06,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 07:38:06,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:38:06,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:38:06,512 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:38:06,512 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501352463] [2021-11-20 07:38:06,513 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [501352463] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:38:06,513 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:38:06,513 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-20 07:38:06,515 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779914969] [2021-11-20 07:38:06,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:38:06,526 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-20 07:38:06,527 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:38:06,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-20 07:38:06,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-20 07:38:06,578 INFO L87 Difference]: Start difference. First operand has 41 states, 32 states have (on average 1.53125) internal successors, (49), 33 states have internal predecessors, (49), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-20 07:38:06,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:38:06,613 INFO L93 Difference]: Finished difference Result 79 states and 117 transitions. [2021-11-20 07:38:06,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-20 07:38:06,616 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2021-11-20 07:38:06,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:38:06,622 INFO L225 Difference]: With dead ends: 79 [2021-11-20 07:38:06,623 INFO L226 Difference]: Without dead ends: 37 [2021-11-20 07:38:06,626 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-20 07:38:06,635 INFO L933 BasicCegarLoop]: 51 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, 51 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 [2021-11-20 07:38:06,637 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 07:38:06,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2021-11-20 07:38:06,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2021-11-20 07:38:06,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 29 states have (on average 1.2758620689655173) internal successors, (37), 29 states have internal predecessors, (37), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-11-20 07:38:06,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 47 transitions. [2021-11-20 07:38:06,686 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 47 transitions. Word has length 15 [2021-11-20 07:38:06,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:38:06,687 INFO L470 AbstractCegarLoop]: Abstraction has 37 states and 47 transitions. [2021-11-20 07:38:06,687 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-20 07:38:06,687 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 47 transitions. [2021-11-20 07:38:06,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-20 07:38:06,690 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:38:06,690 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:38:06,691 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-20 07:38:06,691 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:38:06,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:38:06,692 INFO L85 PathProgramCache]: Analyzing trace with hash -1909329698, now seen corresponding path program 1 times [2021-11-20 07:38:06,692 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:38:06,693 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39252409] [2021-11-20 07:38:06,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:38:06,693 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:38:06,710 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 07:38:06,711 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [569237459] [2021-11-20 07:38:06,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:38:06,711 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:38:06,712 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49d85ad4-41bf-4f4c-98b7-09f890c2675e/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:38:06,713 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49d85ad4-41bf-4f4c-98b7-09f890c2675e/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 07:38:06,713 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49d85ad4-41bf-4f4c-98b7-09f890c2675e/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-20 07:38:06,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:38:06,810 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-20 07:38:06,817 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:38:07,084 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-20 07:38:07,084 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 07:38:07,084 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:38:07,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39252409] [2021-11-20 07:38:07,086 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 07:38:07,086 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [569237459] [2021-11-20 07:38:07,091 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [569237459] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:38:07,092 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:38:07,092 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 07:38:07,094 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179929784] [2021-11-20 07:38:07,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:38:07,095 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 07:38:07,097 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:38:07,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 07:38:07,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 07:38:07,100 INFO L87 Difference]: Start difference. First operand 37 states and 47 transitions. Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-20 07:38:07,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:38:07,144 INFO L93 Difference]: Finished difference Result 44 states and 55 transitions. [2021-11-20 07:38:07,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 07:38:07,145 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 42 [2021-11-20 07:38:07,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:38:07,147 INFO L225 Difference]: With dead ends: 44 [2021-11-20 07:38:07,147 INFO L226 Difference]: Without dead ends: 40 [2021-11-20 07:38:07,148 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-20 07:38:07,149 INFO L933 BasicCegarLoop]: 45 mSDtfsCounter, 12 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 07:38:07,150 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 110 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 07:38:07,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2021-11-20 07:38:07,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2021-11-20 07:38:07,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 32 states have (on average 1.28125) internal successors, (41), 32 states have internal predecessors, (41), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-11-20 07:38:07,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 51 transitions. [2021-11-20 07:38:07,159 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 51 transitions. Word has length 42 [2021-11-20 07:38:07,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:38:07,161 INFO L470 AbstractCegarLoop]: Abstraction has 40 states and 51 transitions. [2021-11-20 07:38:07,161 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-20 07:38:07,161 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 51 transitions. [2021-11-20 07:38:07,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-11-20 07:38:07,163 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:38:07,163 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:38:07,203 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49d85ad4-41bf-4f4c-98b7-09f890c2675e/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-20 07:38:07,388 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49d85ad4-41bf-4f4c-98b7-09f890c2675e/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:38:07,389 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:38:07,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:38:07,390 INFO L85 PathProgramCache]: Analyzing trace with hash 1786751912, now seen corresponding path program 1 times [2021-11-20 07:38:07,390 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:38:07,390 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535110921] [2021-11-20 07:38:07,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:38:07,391 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:38:07,410 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 07:38:07,410 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1483676489] [2021-11-20 07:38:07,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:38:07,411 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:38:07,411 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49d85ad4-41bf-4f4c-98b7-09f890c2675e/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:38:07,412 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49d85ad4-41bf-4f4c-98b7-09f890c2675e/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 07:38:07,417 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49d85ad4-41bf-4f4c-98b7-09f890c2675e/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-20 07:38:07,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:38:07,481 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-20 07:38:07,484 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:38:07,689 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-20 07:38:07,690 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 07:38:07,690 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:38:07,693 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535110921] [2021-11-20 07:38:07,693 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 07:38:07,693 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1483676489] [2021-11-20 07:38:07,694 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1483676489] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:38:07,694 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:38:07,694 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-20 07:38:07,694 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098158707] [2021-11-20 07:38:07,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:38:07,695 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 07:38:07,696 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:38:07,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 07:38:07,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-20 07:38:07,697 INFO L87 Difference]: Start difference. First operand 40 states and 51 transitions. Second operand has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-20 07:38:07,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:38:07,859 INFO L93 Difference]: Finished difference Result 83 states and 106 transitions. [2021-11-20 07:38:07,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 07:38:07,859 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 47 [2021-11-20 07:38:07,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:38:07,862 INFO L225 Difference]: With dead ends: 83 [2021-11-20 07:38:07,862 INFO L226 Difference]: Without dead ends: 50 [2021-11-20 07:38:07,864 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-20 07:38:07,867 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 25 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 07:38:07,868 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [25 Valid, 128 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 07:38:07,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-11-20 07:38:07,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 41. [2021-11-20 07:38:07,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 33 states have (on average 1.2727272727272727) internal successors, (42), 33 states have internal predecessors, (42), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-11-20 07:38:07,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 52 transitions. [2021-11-20 07:38:07,888 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 52 transitions. Word has length 47 [2021-11-20 07:38:07,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:38:07,888 INFO L470 AbstractCegarLoop]: Abstraction has 41 states and 52 transitions. [2021-11-20 07:38:07,890 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-20 07:38:07,890 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 52 transitions. [2021-11-20 07:38:07,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-11-20 07:38:07,894 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:38:07,894 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:38:07,929 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49d85ad4-41bf-4f4c-98b7-09f890c2675e/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-20 07:38:08,108 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49d85ad4-41bf-4f4c-98b7-09f890c2675e/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-11-20 07:38:08,109 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:38:08,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:38:08,110 INFO L85 PathProgramCache]: Analyzing trace with hash -2075657686, now seen corresponding path program 1 times [2021-11-20 07:38:08,110 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:38:08,110 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977552511] [2021-11-20 07:38:08,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:38:08,110 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:38:08,121 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 07:38:08,122 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [278632190] [2021-11-20 07:38:08,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:38:08,122 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:38:08,123 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49d85ad4-41bf-4f4c-98b7-09f890c2675e/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:38:08,123 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49d85ad4-41bf-4f4c-98b7-09f890c2675e/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 07:38:08,148 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49d85ad4-41bf-4f4c-98b7-09f890c2675e/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-20 07:38:08,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:38:08,208 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-20 07:38:08,211 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:38:08,338 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-20 07:38:08,338 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 07:38:08,340 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:38:08,340 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977552511] [2021-11-20 07:38:08,340 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 07:38:08,340 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [278632190] [2021-11-20 07:38:08,341 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [278632190] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:38:08,341 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:38:08,341 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 07:38:08,342 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059097995] [2021-11-20 07:38:08,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:38:08,343 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 07:38:08,343 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:38:08,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 07:38:08,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 07:38:08,345 INFO L87 Difference]: Start difference. First operand 41 states and 52 transitions. Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-20 07:38:08,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:38:08,408 INFO L93 Difference]: Finished difference Result 80 states and 103 transitions. [2021-11-20 07:38:08,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 07:38:08,409 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 50 [2021-11-20 07:38:08,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:38:08,419 INFO L225 Difference]: With dead ends: 80 [2021-11-20 07:38:08,419 INFO L226 Difference]: Without dead ends: 44 [2021-11-20 07:38:08,421 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-20 07:38:08,424 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 28 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 07:38:08,425 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 77 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 07:38:08,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2021-11-20 07:38:08,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 41. [2021-11-20 07:38:08,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 33 states have (on average 1.2424242424242424) internal successors, (41), 33 states have internal predecessors, (41), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-11-20 07:38:08,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 51 transitions. [2021-11-20 07:38:08,432 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 51 transitions. Word has length 50 [2021-11-20 07:38:08,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:38:08,433 INFO L470 AbstractCegarLoop]: Abstraction has 41 states and 51 transitions. [2021-11-20 07:38:08,433 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-20 07:38:08,433 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 51 transitions. [2021-11-20 07:38:08,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-11-20 07:38:08,434 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:38:08,434 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:38:08,470 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49d85ad4-41bf-4f4c-98b7-09f890c2675e/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-20 07:38:08,659 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49d85ad4-41bf-4f4c-98b7-09f890c2675e/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:38:08,660 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:38:08,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:38:08,660 INFO L85 PathProgramCache]: Analyzing trace with hash 874891816, now seen corresponding path program 1 times [2021-11-20 07:38:08,661 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:38:08,661 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119358688] [2021-11-20 07:38:08,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:38:08,661 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:38:08,677 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 07:38:08,683 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [278562372] [2021-11-20 07:38:08,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:38:08,684 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:38:08,684 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49d85ad4-41bf-4f4c-98b7-09f890c2675e/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:38:08,685 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49d85ad4-41bf-4f4c-98b7-09f890c2675e/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 07:38:08,688 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49d85ad4-41bf-4f4c-98b7-09f890c2675e/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-20 07:38:08,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:38:08,741 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-20 07:38:08,744 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:38:08,891 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-20 07:38:08,891 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:38:09,053 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-20 07:38:09,054 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:38:09,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119358688] [2021-11-20 07:38:09,054 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 07:38:09,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [278562372] [2021-11-20 07:38:09,055 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [278562372] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 07:38:09,055 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 07:38:09,055 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2021-11-20 07:38:09,055 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616038683] [2021-11-20 07:38:09,055 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 07:38:09,056 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-20 07:38:09,056 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:38:09,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-20 07:38:09,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-11-20 07:38:09,057 INFO L87 Difference]: Start difference. First operand 41 states and 51 transitions. Second operand has 10 states, 10 states have (on average 4.8) internal successors, (48), 10 states have internal predecessors, (48), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-11-20 07:38:09,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:38:09,194 INFO L93 Difference]: Finished difference Result 87 states and 107 transitions. [2021-11-20 07:38:09,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-20 07:38:09,196 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 10 states have internal predecessors, (48), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 52 [2021-11-20 07:38:09,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:38:09,200 INFO L225 Difference]: With dead ends: 87 [2021-11-20 07:38:09,201 INFO L226 Difference]: Without dead ends: 51 [2021-11-20 07:38:09,202 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2021-11-20 07:38:09,203 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 45 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 07:38:09,204 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 92 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 07:38:09,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2021-11-20 07:38:09,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 49. [2021-11-20 07:38:09,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 40 states have (on average 1.2) internal successors, (48), 40 states have internal predecessors, (48), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-11-20 07:38:09,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 58 transitions. [2021-11-20 07:38:09,218 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 58 transitions. Word has length 52 [2021-11-20 07:38:09,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:38:09,219 INFO L470 AbstractCegarLoop]: Abstraction has 49 states and 58 transitions. [2021-11-20 07:38:09,219 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 10 states have internal predecessors, (48), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-11-20 07:38:09,219 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 58 transitions. [2021-11-20 07:38:09,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-20 07:38:09,228 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:38:09,229 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:38:09,269 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49d85ad4-41bf-4f4c-98b7-09f890c2675e/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-20 07:38:09,448 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49d85ad4-41bf-4f4c-98b7-09f890c2675e/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:38:09,449 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:38:09,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:38:09,449 INFO L85 PathProgramCache]: Analyzing trace with hash -1211966936, now seen corresponding path program 2 times [2021-11-20 07:38:09,449 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:38:09,449 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692548048] [2021-11-20 07:38:09,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:38:09,450 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:38:09,459 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 07:38:09,459 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [566298210] [2021-11-20 07:38:09,459 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-20 07:38:09,459 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:38:09,460 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49d85ad4-41bf-4f4c-98b7-09f890c2675e/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:38:09,464 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49d85ad4-41bf-4f4c-98b7-09f890c2675e/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 07:38:09,473 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49d85ad4-41bf-4f4c-98b7-09f890c2675e/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-20 07:38:09,532 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-20 07:38:09,532 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 07:38:09,533 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-20 07:38:09,536 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:38:09,744 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-20 07:38:09,744 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:38:09,893 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-20 07:38:09,894 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:38:09,894 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692548048] [2021-11-20 07:38:09,894 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 07:38:09,894 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [566298210] [2021-11-20 07:38:09,894 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [566298210] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 07:38:09,894 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 07:38:09,894 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2021-11-20 07:38:09,895 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654871497] [2021-11-20 07:38:09,895 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 07:38:09,895 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-20 07:38:09,896 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:38:09,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-20 07:38:09,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2021-11-20 07:38:09,896 INFO L87 Difference]: Start difference. First operand 49 states and 58 transitions. Second operand has 11 states, 11 states have (on average 4.454545454545454) internal successors, (49), 11 states have internal predecessors, (49), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-11-20 07:38:10,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:38:10,102 INFO L93 Difference]: Finished difference Result 108 states and 130 transitions. [2021-11-20 07:38:10,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-20 07:38:10,103 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.454545454545454) internal successors, (49), 11 states have internal predecessors, (49), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 56 [2021-11-20 07:38:10,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:38:10,104 INFO L225 Difference]: With dead ends: 108 [2021-11-20 07:38:10,104 INFO L226 Difference]: Without dead ends: 75 [2021-11-20 07:38:10,105 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2021-11-20 07:38:10,105 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 51 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 07:38:10,106 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [55 Valid, 151 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 07:38:10,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2021-11-20 07:38:10,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 63. [2021-11-20 07:38:10,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 54 states have (on average 1.1851851851851851) internal successors, (64), 54 states have internal predecessors, (64), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-11-20 07:38:10,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 74 transitions. [2021-11-20 07:38:10,115 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 74 transitions. Word has length 56 [2021-11-20 07:38:10,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:38:10,115 INFO L470 AbstractCegarLoop]: Abstraction has 63 states and 74 transitions. [2021-11-20 07:38:10,115 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.454545454545454) internal successors, (49), 11 states have internal predecessors, (49), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-11-20 07:38:10,115 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 74 transitions. [2021-11-20 07:38:10,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-20 07:38:10,116 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:38:10,116 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:38:10,145 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49d85ad4-41bf-4f4c-98b7-09f890c2675e/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-20 07:38:10,336 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49d85ad4-41bf-4f4c-98b7-09f890c2675e/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:38:10,337 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:38:10,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:38:10,337 INFO L85 PathProgramCache]: Analyzing trace with hash -511912674, now seen corresponding path program 3 times [2021-11-20 07:38:10,338 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:38:10,338 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807274657] [2021-11-20 07:38:10,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:38:10,338 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:38:10,348 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 07:38:10,348 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1709544046] [2021-11-20 07:38:10,348 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-20 07:38:10,349 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:38:10,349 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49d85ad4-41bf-4f4c-98b7-09f890c2675e/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:38:10,365 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49d85ad4-41bf-4f4c-98b7-09f890c2675e/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 07:38:10,368 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49d85ad4-41bf-4f4c-98b7-09f890c2675e/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-20 07:38:11,484 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2021-11-20 07:38:11,484 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 07:38:11,488 INFO L263 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 86 conjunts are in the unsatisfiable core [2021-11-20 07:38:11,495 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:38:11,657 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 24 treesize of output 20 [2021-11-20 07:38:11,671 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 22 treesize of output 18 [2021-11-20 07:38:11,807 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:11,808 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:11,809 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 87 [2021-11-20 07:38:11,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:11,839 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 19 [2021-11-20 07:38:11,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:11,879 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 22 [2021-11-20 07:38:12,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:12,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:12,117 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:12,135 INFO L354 Elim1Store]: treesize reduction 82, result has 17.2 percent of original size [2021-11-20 07:38:12,136 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 76 treesize of output 96 [2021-11-20 07:38:12,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:12,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:12,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:12,198 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 20 [2021-11-20 07:38:12,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:12,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:12,233 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:12,234 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 26 [2021-11-20 07:38:12,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:12,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:12,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:12,552 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:12,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:12,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:12,555 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:12,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:12,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:12,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:12,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:12,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:12,563 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:12,564 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:12,568 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-20 07:38:12,569 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 4 select indices, 4 select index equivalence classes, 14 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 145 treesize of output 201 [2021-11-20 07:38:12,633 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:12,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:12,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:12,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:12,639 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:12,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:12,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:12,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:12,643 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:12,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:12,646 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 137 treesize of output 66 [2021-11-20 07:38:14,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:14,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:14,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:14,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:14,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:14,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:14,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:14,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:14,658 INFO L354 Elim1Store]: treesize reduction 199, result has 44.6 percent of original size [2021-11-20 07:38:14,658 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 4 select indices, 4 select index equivalence classes, 8 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 12 case distinctions, treesize of input 107 treesize of output 260 [2021-11-20 07:38:14,785 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-20 07:38:14,867 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-20 07:38:15,027 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-20 07:38:15,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:15,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:15,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:15,463 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:15,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:15,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:15,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:15,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:15,494 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-20 07:38:15,495 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 347 treesize of output 310 [2021-11-20 07:38:19,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:19,045 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:19,047 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:19,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:19,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:19,051 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:21,573 INFO L354 Elim1Store]: treesize reduction 1421, result has 19.6 percent of original size [2021-11-20 07:38:21,573 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 4 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 9 new quantified variables, introduced 30 case distinctions, treesize of input 395 treesize of output 584 [2021-11-20 07:38:21,670 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-20 07:38:21,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:21,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:21,750 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:21,752 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:21,753 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:21,755 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:21,757 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 93 treesize of output 42 [2021-11-20 07:38:21,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:21,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:21,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:21,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:22,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:22,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:22,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:22,041 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:22,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:22,092 INFO L354 Elim1Store]: treesize reduction -2, result has 106.7 percent of original size [2021-11-20 07:38:22,092 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 1 case distinctions, treesize of input 104 treesize of output 81 [2021-11-20 07:38:22,193 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-20 07:38:22,341 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:22,343 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:22,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:22,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:22,351 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:22,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:22,354 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 89 treesize of output 40 [2021-11-20 07:38:22,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:22,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:22,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:22,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:22,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:22,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:22,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:22,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:22,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:22,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:22,529 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 340 treesize of output 269 [2021-11-20 07:38:22,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:22,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:22,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:22,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:22,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:22,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:22,929 INFO L354 Elim1Store]: treesize reduction 135, result has 0.7 percent of original size [2021-11-20 07:38:22,929 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 435 treesize of output 285 [2021-11-20 07:38:31,671 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 07:38:31,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:31,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:31,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:31,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:31,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:31,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:31,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:31,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:31,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:31,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:31,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:31,684 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:31,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:31,687 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:31,687 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 07:38:31,689 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:31,690 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:31,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:31,692 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 07:38:31,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:31,694 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 07:38:31,981 INFO L354 Elim1Store]: treesize reduction 641, result has 14.5 percent of original size [2021-11-20 07:38:31,981 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 12 select indices, 12 select index equivalence classes, 10 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 66 case distinctions, treesize of input 325 treesize of output 197 [2021-11-20 07:38:33,032 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 11 proven. 54 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-20 07:38:33,032 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:41:34,432 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-20 07:41:34,432 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 375 treesize of output 375 [2021-11-20 07:41:34,514 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 21 treesize of output 4 [2021-11-20 07:41:34,785 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 327 treesize of output 317 [2021-11-20 07:41:35,824 INFO L354 Elim1Store]: treesize reduction 102, result has 44.9 percent of original size [2021-11-20 07:41:35,833 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 43013262071 treesize of output 42390739772