./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/list-simple/dll2n_remove_all.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7e70badd Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72748210-0db8-4f9f-8ee8-78a1bdf9d1ac/bin/uautomizer-wIGwrQj20G/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72748210-0db8-4f9f-8ee8-78a1bdf9d1ac/bin/uautomizer-wIGwrQj20G/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72748210-0db8-4f9f-8ee8-78a1bdf9d1ac/bin/uautomizer-wIGwrQj20G/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72748210-0db8-4f9f-8ee8-78a1bdf9d1ac/bin/uautomizer-wIGwrQj20G/config/AutomizerReach.xml -i ../../sv-benchmarks/c/list-simple/dll2n_remove_all.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72748210-0db8-4f9f-8ee8-78a1bdf9d1ac/bin/uautomizer-wIGwrQj20G/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72748210-0db8-4f9f-8ee8-78a1bdf9d1ac/bin/uautomizer-wIGwrQj20G --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b594cdd667b896d6ce097f6fd96950290806f015d929f3b2b06ffea35d861f89 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-7e70bad [2021-11-23 12:59:11,449 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 12:59:11,453 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 12:59:11,520 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 12:59:11,521 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 12:59:11,526 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 12:59:11,528 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 12:59:11,533 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 12:59:11,537 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 12:59:11,544 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 12:59:11,545 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 12:59:11,547 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 12:59:11,548 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 12:59:11,551 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 12:59:11,554 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 12:59:11,564 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 12:59:11,566 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 12:59:11,568 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 12:59:11,571 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 12:59:11,580 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 12:59:11,583 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 12:59:11,585 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 12:59:11,589 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 12:59:11,590 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 12:59:11,601 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 12:59:11,602 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 12:59:11,602 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 12:59:11,605 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 12:59:11,606 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 12:59:11,608 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 12:59:11,608 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 12:59:11,610 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 12:59:11,612 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 12:59:11,614 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 12:59:11,616 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 12:59:11,617 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 12:59:11,618 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 12:59:11,618 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 12:59:11,618 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 12:59:11,620 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 12:59:11,621 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 12:59:11,622 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72748210-0db8-4f9f-8ee8-78a1bdf9d1ac/bin/uautomizer-wIGwrQj20G/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-23 12:59:11,675 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 12:59:11,676 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 12:59:11,677 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 12:59:11,677 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 12:59:11,687 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-23 12:59:11,687 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-23 12:59:11,687 INFO L138 SettingsManager]: * Use SBE=true [2021-11-23 12:59:11,688 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 12:59:11,688 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 12:59:11,688 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 12:59:11,690 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 12:59:11,690 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 12:59:11,690 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 12:59:11,691 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 12:59:11,691 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 12:59:11,691 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 12:59:11,691 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 12:59:11,692 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 12:59:11,692 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 12:59:11,692 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 12:59:11,693 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 12:59:11,693 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 12:59:11,693 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 12:59:11,694 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 12:59:11,694 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 12:59:11,694 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 12:59:11,694 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-23 12:59:11,695 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 12:59:11,695 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-23 12:59:11,697 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-23 12:59:11,697 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 12:59:11,697 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 12:59:11,698 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_72748210-0db8-4f9f-8ee8-78a1bdf9d1ac/bin/uautomizer-wIGwrQj20G/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72748210-0db8-4f9f-8ee8-78a1bdf9d1ac/bin/uautomizer-wIGwrQj20G Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b594cdd667b896d6ce097f6fd96950290806f015d929f3b2b06ffea35d861f89 [2021-11-23 12:59:12,016 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 12:59:12,042 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 12:59:12,045 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 12:59:12,047 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 12:59:12,048 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 12:59:12,050 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72748210-0db8-4f9f-8ee8-78a1bdf9d1ac/bin/uautomizer-wIGwrQj20G/../../sv-benchmarks/c/list-simple/dll2n_remove_all.i [2021-11-23 12:59:12,171 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72748210-0db8-4f9f-8ee8-78a1bdf9d1ac/bin/uautomizer-wIGwrQj20G/data/5e5a868ca/1816b5c936b7473499c844e89ebef408/FLAG7ac278e7e [2021-11-23 12:59:12,827 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 12:59:12,828 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72748210-0db8-4f9f-8ee8-78a1bdf9d1ac/sv-benchmarks/c/list-simple/dll2n_remove_all.i [2021-11-23 12:59:12,853 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72748210-0db8-4f9f-8ee8-78a1bdf9d1ac/bin/uautomizer-wIGwrQj20G/data/5e5a868ca/1816b5c936b7473499c844e89ebef408/FLAG7ac278e7e [2021-11-23 12:59:13,128 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72748210-0db8-4f9f-8ee8-78a1bdf9d1ac/bin/uautomizer-wIGwrQj20G/data/5e5a868ca/1816b5c936b7473499c844e89ebef408 [2021-11-23 12:59:13,131 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 12:59:13,133 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 12:59:13,135 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 12:59:13,136 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 12:59:13,140 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 12:59:13,141 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 12:59:13" (1/1) ... [2021-11-23 12:59:13,143 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3325bcc4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:59:13, skipping insertion in model container [2021-11-23 12:59:13,143 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 12:59:13" (1/1) ... [2021-11-23 12:59:13,151 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 12:59:13,211 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 12:59:13,607 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_72748210-0db8-4f9f-8ee8-78a1bdf9d1ac/sv-benchmarks/c/list-simple/dll2n_remove_all.i[24090,24103] [2021-11-23 12:59:13,611 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 12:59:13,620 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 12:59:13,671 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_72748210-0db8-4f9f-8ee8-78a1bdf9d1ac/sv-benchmarks/c/list-simple/dll2n_remove_all.i[24090,24103] [2021-11-23 12:59:13,672 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 12:59:13,709 INFO L208 MainTranslator]: Completed translation [2021-11-23 12:59:13,710 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:59:13 WrapperNode [2021-11-23 12:59:13,710 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 12:59:13,712 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 12:59:13,712 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 12:59:13,712 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 12:59:13,721 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:59:13" (1/1) ... [2021-11-23 12:59:13,738 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:59:13" (1/1) ... [2021-11-23 12:59:13,769 INFO L137 Inliner]: procedures = 126, calls = 31, calls flagged for inlining = 6, calls inlined = 5, statements flattened = 81 [2021-11-23 12:59:13,771 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 12:59:13,772 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 12:59:13,772 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 12:59:13,773 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 12:59:13,783 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:59:13" (1/1) ... [2021-11-23 12:59:13,783 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:59:13" (1/1) ... [2021-11-23 12:59:13,796 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:59:13" (1/1) ... [2021-11-23 12:59:13,796 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:59:13" (1/1) ... [2021-11-23 12:59:13,814 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:59:13" (1/1) ... [2021-11-23 12:59:13,827 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:59:13" (1/1) ... [2021-11-23 12:59:13,835 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:59:13" (1/1) ... [2021-11-23 12:59:13,839 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 12:59:13,844 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 12:59:13,845 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 12:59:13,846 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 12:59:13,848 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:59:13" (1/1) ... [2021-11-23 12:59:13,858 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 12:59:13,876 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72748210-0db8-4f9f-8ee8-78a1bdf9d1ac/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:59:13,889 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72748210-0db8-4f9f-8ee8-78a1bdf9d1ac/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 12:59:13,900 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72748210-0db8-4f9f-8ee8-78a1bdf9d1ac/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 12:59:13,938 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-23 12:59:13,938 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-23 12:59:13,939 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 12:59:13,939 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-23 12:59:13,939 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-23 12:59:13,939 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-23 12:59:13,940 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 12:59:13,940 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-23 12:59:13,940 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 12:59:13,940 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 12:59:13,941 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 12:59:14,052 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 12:59:14,054 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 12:59:14,276 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 12:59:14,283 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 12:59:14,284 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-23 12:59:14,286 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 12:59:14 BoogieIcfgContainer [2021-11-23 12:59:14,286 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 12:59:14,289 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 12:59:14,289 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 12:59:14,294 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 12:59:14,294 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 12:59:13" (1/3) ... [2021-11-23 12:59:14,296 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48fd190c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 12:59:14, skipping insertion in model container [2021-11-23 12:59:14,296 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:59:13" (2/3) ... [2021-11-23 12:59:14,296 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48fd190c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 12:59:14, skipping insertion in model container [2021-11-23 12:59:14,297 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 12:59:14" (3/3) ... [2021-11-23 12:59:14,298 INFO L111 eAbstractionObserver]: Analyzing ICFG dll2n_remove_all.i [2021-11-23 12:59:14,305 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 12:59:14,306 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 12:59:14,411 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 12:59:14,422 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-23 12:59:14,423 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-23 12:59:14,473 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 20 states have (on average 1.45) internal successors, (29), 21 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:59:14,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-23 12:59:14,480 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:59:14,481 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:59:14,482 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 12:59:14,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:59:14,494 INFO L85 PathProgramCache]: Analyzing trace with hash -718200754, now seen corresponding path program 1 times [2021-11-23 12:59:14,506 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:59:14,508 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321035195] [2021-11-23 12:59:14,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:59:14,510 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:59:14,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:59:14,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:59:14,764 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:59:14,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321035195] [2021-11-23 12:59:14,767 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1321035195] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:59:14,767 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:59:14,767 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 12:59:14,769 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936279417] [2021-11-23 12:59:14,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:59:14,775 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-23 12:59:14,775 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:59:14,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-23 12:59:14,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 12:59:14,820 INFO L87 Difference]: Start difference. First operand has 22 states, 20 states have (on average 1.45) internal successors, (29), 21 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:59:14,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:59:14,841 INFO L93 Difference]: Finished difference Result 36 states and 46 transitions. [2021-11-23 12:59:14,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-23 12:59:14,844 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-11-23 12:59:14,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:59:14,854 INFO L225 Difference]: With dead ends: 36 [2021-11-23 12:59:14,854 INFO L226 Difference]: Without dead ends: 18 [2021-11-23 12:59:14,859 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 12:59:14,865 INFO L933 BasicCegarLoop]: 26 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, 26 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 12:59:14,866 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 12:59:14,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2021-11-23 12:59:14,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2021-11-23 12:59:14,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 17 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:59:14,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 21 transitions. [2021-11-23 12:59:14,912 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 21 transitions. Word has length 9 [2021-11-23 12:59:14,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:59:14,913 INFO L470 AbstractCegarLoop]: Abstraction has 18 states and 21 transitions. [2021-11-23 12:59:14,913 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:59:14,914 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 21 transitions. [2021-11-23 12:59:14,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-23 12:59:14,915 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:59:14,915 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:59:14,915 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 12:59:14,916 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 12:59:14,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:59:14,921 INFO L85 PathProgramCache]: Analyzing trace with hash -718647619, now seen corresponding path program 1 times [2021-11-23 12:59:14,922 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:59:14,922 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656578257] [2021-11-23 12:59:14,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:59:14,923 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:59:14,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:59:15,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:59:15,054 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:59:15,055 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656578257] [2021-11-23 12:59:15,055 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [656578257] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:59:15,055 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:59:15,056 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 12:59:15,056 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082351207] [2021-11-23 12:59:15,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:59:15,058 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 12:59:15,058 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:59:15,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 12:59:15,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 12:59:15,060 INFO L87 Difference]: Start difference. First operand 18 states and 21 transitions. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:59:15,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:59:15,102 INFO L93 Difference]: Finished difference Result 34 states and 40 transitions. [2021-11-23 12:59:15,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 12:59:15,109 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-11-23 12:59:15,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:59:15,110 INFO L225 Difference]: With dead ends: 34 [2021-11-23 12:59:15,110 INFO L226 Difference]: Without dead ends: 23 [2021-11-23 12:59:15,111 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 12:59:15,113 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 5 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 12:59:15,114 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 36 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 12:59:15,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-11-23 12:59:15,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 19. [2021-11-23 12:59:15,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 18 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:59:15,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 22 transitions. [2021-11-23 12:59:15,121 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 22 transitions. Word has length 9 [2021-11-23 12:59:15,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:59:15,122 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 22 transitions. [2021-11-23 12:59:15,122 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:59:15,122 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 22 transitions. [2021-11-23 12:59:15,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-23 12:59:15,123 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:59:15,123 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:59:15,123 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-23 12:59:15,124 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 12:59:15,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:59:15,125 INFO L85 PathProgramCache]: Analyzing trace with hash -335187182, now seen corresponding path program 1 times [2021-11-23 12:59:15,125 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:59:15,125 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742683796] [2021-11-23 12:59:15,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:59:15,126 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:59:15,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:59:15,245 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:59:15,246 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:59:15,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742683796] [2021-11-23 12:59:15,247 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1742683796] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:59:15,249 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:59:15,249 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 12:59:15,249 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261790885] [2021-11-23 12:59:15,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:59:15,251 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 12:59:15,252 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:59:15,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 12:59:15,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 12:59:15,254 INFO L87 Difference]: Start difference. First operand 19 states and 22 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:59:15,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:59:15,303 INFO L93 Difference]: Finished difference Result 39 states and 46 transitions. [2021-11-23 12:59:15,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 12:59:15,304 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-11-23 12:59:15,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:59:15,306 INFO L225 Difference]: With dead ends: 39 [2021-11-23 12:59:15,306 INFO L226 Difference]: Without dead ends: 23 [2021-11-23 12:59:15,308 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 12:59:15,316 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 1 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 12:59:15,317 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 34 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 12:59:15,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-11-23 12:59:15,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 22. [2021-11-23 12:59:15,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.1904761904761905) internal successors, (25), 21 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:59:15,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2021-11-23 12:59:15,327 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 14 [2021-11-23 12:59:15,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:59:15,327 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2021-11-23 12:59:15,327 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:59:15,328 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2021-11-23 12:59:15,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-23 12:59:15,328 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:59:15,329 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:59:15,329 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-23 12:59:15,329 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 12:59:15,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:59:15,330 INFO L85 PathProgramCache]: Analyzing trace with hash 344871188, now seen corresponding path program 1 times [2021-11-23 12:59:15,330 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:59:15,331 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093001695] [2021-11-23 12:59:15,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:59:15,331 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:59:15,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:59:15,435 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:59:15,435 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:59:15,435 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093001695] [2021-11-23 12:59:15,436 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1093001695] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 12:59:15,436 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [183642763] [2021-11-23 12:59:15,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:59:15,436 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:59:15,437 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72748210-0db8-4f9f-8ee8-78a1bdf9d1ac/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:59:15,439 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72748210-0db8-4f9f-8ee8-78a1bdf9d1ac/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 12:59:15,460 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72748210-0db8-4f9f-8ee8-78a1bdf9d1ac/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-23 12:59:15,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:59:15,555 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-23 12:59:15,564 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:59:15,670 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:59:15,670 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 12:59:15,762 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:59:15,763 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [183642763] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 12:59:15,763 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 12:59:15,763 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2021-11-23 12:59:15,763 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808137396] [2021-11-23 12:59:15,764 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 12:59:15,764 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 12:59:15,764 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:59:15,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 12:59:15,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-23 12:59:15,766 INFO L87 Difference]: Start difference. First operand 22 states and 25 transitions. Second operand has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:59:15,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:59:15,810 INFO L93 Difference]: Finished difference Result 35 states and 40 transitions. [2021-11-23 12:59:15,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 12:59:15,813 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-11-23 12:59:15,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:59:15,814 INFO L225 Difference]: With dead ends: 35 [2021-11-23 12:59:15,814 INFO L226 Difference]: Without dead ends: 24 [2021-11-23 12:59:15,815 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-23 12:59:15,816 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 9 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 12:59:15,817 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 53 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 12:59:15,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2021-11-23 12:59:15,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2021-11-23 12:59:15,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 23 states have (on average 1.173913043478261) internal successors, (27), 23 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:59:15,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2021-11-23 12:59:15,827 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 14 [2021-11-23 12:59:15,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:59:15,828 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2021-11-23 12:59:15,828 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:59:15,828 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2021-11-23 12:59:15,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-23 12:59:15,829 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:59:15,829 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:59:15,876 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72748210-0db8-4f9f-8ee8-78a1bdf9d1ac/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-23 12:59:16,030 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72748210-0db8-4f9f-8ee8-78a1bdf9d1ac/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:59:16,031 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 12:59:16,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:59:16,031 INFO L85 PathProgramCache]: Analyzing trace with hash -1454878949, now seen corresponding path program 1 times [2021-11-23 12:59:16,032 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:59:16,032 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304991912] [2021-11-23 12:59:16,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:59:16,032 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:59:16,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:59:16,124 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-23 12:59:16,124 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:59:16,124 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304991912] [2021-11-23 12:59:16,125 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [304991912] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:59:16,125 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:59:16,125 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 12:59:16,126 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109942876] [2021-11-23 12:59:16,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:59:16,126 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 12:59:16,127 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:59:16,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 12:59:16,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 12:59:16,128 INFO L87 Difference]: Start difference. First operand 24 states and 27 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:59:16,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:59:16,151 INFO L93 Difference]: Finished difference Result 33 states and 37 transitions. [2021-11-23 12:59:16,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 12:59:16,152 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-11-23 12:59:16,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:59:16,153 INFO L225 Difference]: With dead ends: 33 [2021-11-23 12:59:16,153 INFO L226 Difference]: Without dead ends: 29 [2021-11-23 12:59:16,154 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 12:59:16,155 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 21 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 12:59:16,156 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 35 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 12:59:16,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-11-23 12:59:16,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 25. [2021-11-23 12:59:16,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 24 states have (on average 1.1666666666666667) internal successors, (28), 24 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:59:16,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2021-11-23 12:59:16,163 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 19 [2021-11-23 12:59:16,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:59:16,163 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2021-11-23 12:59:16,164 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:59:16,164 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2021-11-23 12:59:16,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-23 12:59:16,165 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:59:16,165 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:59:16,165 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-23 12:59:16,166 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 12:59:16,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:59:16,167 INFO L85 PathProgramCache]: Analyzing trace with hash -781456387, now seen corresponding path program 1 times [2021-11-23 12:59:16,167 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:59:16,167 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167379343] [2021-11-23 12:59:16,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:59:16,168 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:59:16,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:59:16,295 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-23 12:59:16,296 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:59:16,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167379343] [2021-11-23 12:59:16,296 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167379343] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 12:59:16,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1042754840] [2021-11-23 12:59:16,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:59:16,297 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:59:16,297 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72748210-0db8-4f9f-8ee8-78a1bdf9d1ac/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:59:16,304 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72748210-0db8-4f9f-8ee8-78a1bdf9d1ac/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 12:59:16,324 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72748210-0db8-4f9f-8ee8-78a1bdf9d1ac/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-23 12:59:16,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:59:16,412 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-23 12:59:16,417 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:59:16,560 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-23 12:59:16,560 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 12:59:16,665 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-23 12:59:16,665 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1042754840] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 12:59:16,665 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 12:59:16,665 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 6 [2021-11-23 12:59:16,666 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292174747] [2021-11-23 12:59:16,666 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 12:59:16,666 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 12:59:16,667 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:59:16,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 12:59:16,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-23 12:59:16,668 INFO L87 Difference]: Start difference. First operand 25 states and 28 transitions. Second operand has 6 states, 6 states have (on average 5.0) internal successors, (30), 6 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:59:16,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:59:16,703 INFO L93 Difference]: Finished difference Result 34 states and 38 transitions. [2021-11-23 12:59:16,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 12:59:16,704 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.0) internal successors, (30), 6 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-11-23 12:59:16,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:59:16,705 INFO L225 Difference]: With dead ends: 34 [2021-11-23 12:59:16,705 INFO L226 Difference]: Without dead ends: 30 [2021-11-23 12:59:16,706 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-11-23 12:59:16,707 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 43 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 12:59:16,707 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [43 Valid, 35 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 12:59:16,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-11-23 12:59:16,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2021-11-23 12:59:16,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 1.1724137931034482) internal successors, (34), 29 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:59:16,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2021-11-23 12:59:16,714 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 24 [2021-11-23 12:59:16,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:59:16,714 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2021-11-23 12:59:16,715 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.0) internal successors, (30), 6 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:59:16,715 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2021-11-23 12:59:16,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-23 12:59:16,716 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:59:16,716 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:59:16,756 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72748210-0db8-4f9f-8ee8-78a1bdf9d1ac/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-11-23 12:59:16,940 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72748210-0db8-4f9f-8ee8-78a1bdf9d1ac/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:59:16,940 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 12:59:16,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:59:16,941 INFO L85 PathProgramCache]: Analyzing trace with hash -53408677, now seen corresponding path program 2 times [2021-11-23 12:59:16,941 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:59:16,941 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583536855] [2021-11-23 12:59:16,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:59:16,942 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:59:17,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:59:18,160 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:59:18,160 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:59:18,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [583536855] [2021-11-23 12:59:18,160 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [583536855] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 12:59:18,161 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1098919769] [2021-11-23 12:59:18,161 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-23 12:59:18,161 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:59:18,161 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72748210-0db8-4f9f-8ee8-78a1bdf9d1ac/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:59:18,162 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72748210-0db8-4f9f-8ee8-78a1bdf9d1ac/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 12:59:18,188 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72748210-0db8-4f9f-8ee8-78a1bdf9d1ac/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-23 12:59:18,257 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-23 12:59:18,257 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 12:59:18,260 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 76 conjunts are in the unsatisfiable core [2021-11-23 12:59:18,265 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:59:18,316 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-23 12:59:18,419 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-23 12:59:18,419 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-11-23 12:59:18,552 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 12:59:18,554 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 19 [2021-11-23 12:59:18,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 12:59:18,570 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 19 [2021-11-23 12:59:18,842 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-11-23 12:59:18,843 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2021-11-23 12:59:19,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 12:59:19,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 12:59:19,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 12:59:19,084 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 7 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 46 [2021-11-23 12:59:19,117 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 12:59:19,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 12:59:19,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 12:59:19,122 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 7 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 46 [2021-11-23 12:59:19,334 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 12:59:19,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 12:59:19,347 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 12:59:19,348 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 12:59:19,385 INFO L354 Elim1Store]: treesize reduction 179, result has 12.7 percent of original size [2021-11-23 12:59:19,387 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 162 treesize of output 112 [2021-11-23 12:59:19,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 12:59:19,420 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 12:59:19,421 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 12:59:19,454 INFO L354 Elim1Store]: treesize reduction 169, result has 15.9 percent of original size [2021-11-23 12:59:19,455 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 139 treesize of output 119 [2021-11-23 12:59:20,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 12:59:20,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 12:59:20,414 INFO L354 Elim1Store]: treesize reduction 345, result has 8.5 percent of original size [2021-11-23 12:59:20,414 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 3 disjoint index pairs (out of 21 index pairs), introduced 10 new quantified variables, introduced 27 case distinctions, treesize of input 221 treesize of output 150 [2021-11-23 12:59:20,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 12:59:20,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 12:59:20,524 INFO L354 Elim1Store]: treesize reduction 443, result has 11.2 percent of original size [2021-11-23 12:59:20,524 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 3 disjoint index pairs (out of 21 index pairs), introduced 8 new quantified variables, introduced 27 case distinctions, treesize of input 182 treesize of output 175 [2021-11-23 12:59:20,749 INFO L354 Elim1Store]: treesize reduction 77, result has 8.3 percent of original size [2021-11-23 12:59:20,750 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 8 new quantified variables, introduced 11 case distinctions, treesize of input 209 treesize of output 146 [2021-11-23 12:59:20,800 INFO L354 Elim1Store]: treesize reduction 188, result has 9.2 percent of original size [2021-11-23 12:59:20,801 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 8 new quantified variables, introduced 17 case distinctions, treesize of input 149 treesize of output 138 [2021-11-23 12:59:21,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 12:59:21,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 12:59:21,238 INFO L354 Elim1Store]: treesize reduction 165, result has 4.6 percent of original size [2021-11-23 12:59:21,239 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 3 disjoint index pairs (out of 21 index pairs), introduced 8 new quantified variables, introduced 20 case distinctions, treesize of input 154 treesize of output 99 [2021-11-23 12:59:21,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 12:59:21,258 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 12:59:21,278 INFO L354 Elim1Store]: treesize reduction 102, result has 2.9 percent of original size [2021-11-23 12:59:21,278 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 3 disjoint index pairs (out of 21 index pairs), introduced 8 new quantified variables, introduced 20 case distinctions, treesize of input 78 treesize of output 51 [2021-11-23 12:59:21,393 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-23 12:59:21,400 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-23 12:59:21,503 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 29 treesize of output 21 [2021-11-23 12:59:21,507 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 18 treesize of output 10 [2021-11-23 12:59:21,516 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:59:21,516 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 12:59:21,570 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 28 treesize of output 24 [2021-11-23 12:59:21,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 12:59:21,588 INFO L190 IndexEqualityManager]: detected not equals via solver