./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/list-simple/sll2c_append_unequal.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 47ea0209 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b68991f1-42f2-4d1a-962e-e2cfd94a4531/bin/uautomizer-AkOaLMaTGY/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b68991f1-42f2-4d1a-962e-e2cfd94a4531/bin/uautomizer-AkOaLMaTGY/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b68991f1-42f2-4d1a-962e-e2cfd94a4531/bin/uautomizer-AkOaLMaTGY/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b68991f1-42f2-4d1a-962e-e2cfd94a4531/bin/uautomizer-AkOaLMaTGY/config/AutomizerReach.xml -i ../../sv-benchmarks/c/list-simple/sll2c_append_unequal.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b68991f1-42f2-4d1a-962e-e2cfd94a4531/bin/uautomizer-AkOaLMaTGY/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b68991f1-42f2-4d1a-962e-e2cfd94a4531/bin/uautomizer-AkOaLMaTGY --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 d83e632829c1e193271bd76b90e08187eb94c70000e5f11d7aea101b3ec9a9e6 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 08:32:01,573 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 08:32:01,575 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 08:32:01,633 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 08:32:01,634 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 08:32:01,639 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 08:32:01,642 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 08:32:01,648 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 08:32:01,650 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 08:32:01,658 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 08:32:01,659 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 08:32:01,662 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 08:32:01,662 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 08:32:01,665 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 08:32:01,667 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 08:32:01,669 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 08:32:01,672 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 08:32:01,673 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 08:32:01,678 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 08:32:01,685 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 08:32:01,688 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 08:32:01,689 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 08:32:01,693 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 08:32:01,694 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 08:32:01,700 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 08:32:01,701 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 08:32:01,701 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 08:32:01,703 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 08:32:01,704 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 08:32:01,706 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 08:32:01,706 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 08:32:01,707 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 08:32:01,709 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 08:32:01,711 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 08:32:01,712 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 08:32:01,713 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 08:32:01,714 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 08:32:01,714 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 08:32:01,714 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 08:32:01,715 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 08:32:01,716 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 08:32:01,717 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b68991f1-42f2-4d1a-962e-e2cfd94a4531/bin/uautomizer-AkOaLMaTGY/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-07 08:32:01,749 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 08:32:01,749 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 08:32:01,750 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-07 08:32:01,750 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-07 08:32:01,751 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 08:32:01,751 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 08:32:01,751 INFO L138 SettingsManager]: * Use SBE=true [2021-11-07 08:32:01,752 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 08:32:01,752 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 08:32:01,752 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 08:32:01,752 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 08:32:01,752 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 08:32:01,753 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 08:32:01,753 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 08:32:01,753 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 08:32:01,753 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 08:32:01,754 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 08:32:01,754 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 08:32:01,754 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 08:32:01,754 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 08:32:01,754 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 08:32:01,755 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 08:32:01,755 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 08:32:01,755 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 08:32:01,755 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 08:32:01,755 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 08:32:01,756 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-07 08:32:01,756 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 08:32:01,756 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-07 08:32:01,756 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-07 08:32:01,757 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 08:32:01,757 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 08:32:01,757 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_b68991f1-42f2-4d1a-962e-e2cfd94a4531/bin/uautomizer-AkOaLMaTGY/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b68991f1-42f2-4d1a-962e-e2cfd94a4531/bin/uautomizer-AkOaLMaTGY Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d83e632829c1e193271bd76b90e08187eb94c70000e5f11d7aea101b3ec9a9e6 [2021-11-07 08:32:01,996 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 08:32:02,030 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 08:32:02,034 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 08:32:02,036 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 08:32:02,037 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 08:32:02,038 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b68991f1-42f2-4d1a-962e-e2cfd94a4531/bin/uautomizer-AkOaLMaTGY/../../sv-benchmarks/c/list-simple/sll2c_append_unequal.i [2021-11-07 08:32:02,114 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b68991f1-42f2-4d1a-962e-e2cfd94a4531/bin/uautomizer-AkOaLMaTGY/data/93abac2ed/f4d3e0efe73a44faaf8978f6a45ecf43/FLAG6d28cdeaa [2021-11-07 08:32:02,623 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 08:32:02,624 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b68991f1-42f2-4d1a-962e-e2cfd94a4531/sv-benchmarks/c/list-simple/sll2c_append_unequal.i [2021-11-07 08:32:02,650 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b68991f1-42f2-4d1a-962e-e2cfd94a4531/bin/uautomizer-AkOaLMaTGY/data/93abac2ed/f4d3e0efe73a44faaf8978f6a45ecf43/FLAG6d28cdeaa [2021-11-07 08:32:02,943 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b68991f1-42f2-4d1a-962e-e2cfd94a4531/bin/uautomizer-AkOaLMaTGY/data/93abac2ed/f4d3e0efe73a44faaf8978f6a45ecf43 [2021-11-07 08:32:02,946 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 08:32:02,947 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 08:32:02,949 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 08:32:02,949 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 08:32:02,952 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 08:32:02,953 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:32:02" (1/1) ... [2021-11-07 08:32:02,954 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6aba826 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:32:02, skipping insertion in model container [2021-11-07 08:32:02,954 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:32:02" (1/1) ... [2021-11-07 08:32:02,961 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 08:32:03,005 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 08:32:03,329 WARN L228 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_b68991f1-42f2-4d1a-962e-e2cfd94a4531/sv-benchmarks/c/list-simple/sll2c_append_unequal.i[24587,24600] [2021-11-07 08:32:03,333 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 08:32:03,342 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 08:32:03,386 WARN L228 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_b68991f1-42f2-4d1a-962e-e2cfd94a4531/sv-benchmarks/c/list-simple/sll2c_append_unequal.i[24587,24600] [2021-11-07 08:32:03,387 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 08:32:03,417 INFO L208 MainTranslator]: Completed translation [2021-11-07 08:32:03,417 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:32:03 WrapperNode [2021-11-07 08:32:03,418 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 08:32:03,419 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 08:32:03,419 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 08:32:03,419 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 08:32:03,427 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:32:03" (1/1) ... [2021-11-07 08:32:03,441 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:32:03" (1/1) ... [2021-11-07 08:32:03,471 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 08:32:03,472 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 08:32:03,472 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 08:32:03,472 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 08:32:03,480 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:32:03" (1/1) ... [2021-11-07 08:32:03,480 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:32:03" (1/1) ... [2021-11-07 08:32:03,485 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:32:03" (1/1) ... [2021-11-07 08:32:03,485 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:32:03" (1/1) ... [2021-11-07 08:32:03,495 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:32:03" (1/1) ... [2021-11-07 08:32:03,499 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:32:03" (1/1) ... [2021-11-07 08:32:03,502 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:32:03" (1/1) ... [2021-11-07 08:32:03,506 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 08:32:03,507 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 08:32:03,507 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 08:32:03,507 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 08:32:03,509 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:32:03" (1/1) ... [2021-11-07 08:32:03,522 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 08:32:03,534 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b68991f1-42f2-4d1a-962e-e2cfd94a4531/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:32:03,566 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b68991f1-42f2-4d1a-962e-e2cfd94a4531/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 08:32:03,595 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b68991f1-42f2-4d1a-962e-e2cfd94a4531/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 08:32:03,618 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-07 08:32:03,618 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-07 08:32:03,618 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 08:32:03,618 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 08:32:03,619 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 08:32:03,619 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 08:32:03,619 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 08:32:03,619 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-07 08:32:03,619 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 08:32:03,620 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 08:32:03,620 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 08:32:04,051 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 08:32:04,051 INFO L299 CfgBuilder]: Removed 27 assume(true) statements. [2021-11-07 08:32:04,053 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:32:04 BoogieIcfgContainer [2021-11-07 08:32:04,053 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 08:32:04,055 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 08:32:04,055 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 08:32:04,071 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 08:32:04,071 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 08:32:02" (1/3) ... [2021-11-07 08:32:04,072 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39676ecd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 08:32:04, skipping insertion in model container [2021-11-07 08:32:04,072 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:32:03" (2/3) ... [2021-11-07 08:32:04,073 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39676ecd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 08:32:04, skipping insertion in model container [2021-11-07 08:32:04,073 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:32:04" (3/3) ... [2021-11-07 08:32:04,074 INFO L111 eAbstractionObserver]: Analyzing ICFG sll2c_append_unequal.i [2021-11-07 08:32:04,080 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 08:32:04,080 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-07 08:32:04,131 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 08:32:04,136 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 [2021-11-07 08:32:04,137 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-07 08:32:04,151 INFO L276 IsEmpty]: Start isEmpty. Operand has 39 states, 37 states have (on average 1.5135135135135136) internal successors, (56), 38 states have internal predecessors, (56), 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) [2021-11-07 08:32:04,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-07 08:32:04,157 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:32:04,158 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:32:04,158 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 08:32:04,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:32:04,164 INFO L85 PathProgramCache]: Analyzing trace with hash 951440371, now seen corresponding path program 1 times [2021-11-07 08:32:04,173 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:32:04,174 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700528021] [2021-11-07 08:32:04,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:32:04,175 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:32:04,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:32:04,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:32:04,345 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:32:04,346 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700528021] [2021-11-07 08:32:04,346 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [700528021] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:32:04,347 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:32:04,347 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 08:32:04,349 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64206121] [2021-11-07 08:32:04,353 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-07 08:32:04,354 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:32:04,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-07 08:32:04,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 08:32:04,368 INFO L87 Difference]: Start difference. First operand has 39 states, 37 states have (on average 1.5135135135135136) internal successors, (56), 38 states have internal predecessors, (56), 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 8.5) internal successors, (17), 2 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:32:04,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:32:04,383 INFO L93 Difference]: Finished difference Result 67 states and 97 transitions. [2021-11-07 08:32:04,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 08:32:04,385 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-11-07 08:32:04,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:32:04,392 INFO L225 Difference]: With dead ends: 67 [2021-11-07 08:32:04,393 INFO L226 Difference]: Without dead ends: 29 [2021-11-07 08:32:04,395 INFO L786 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 [2021-11-07 08:32:04,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-11-07 08:32:04,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2021-11-07 08:32:04,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 28 states have (on average 1.25) internal successors, (35), 28 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:32:04,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 35 transitions. [2021-11-07 08:32:04,427 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 35 transitions. Word has length 17 [2021-11-07 08:32:04,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:32:04,428 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 35 transitions. [2021-11-07 08:32:04,428 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:32:04,428 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 35 transitions. [2021-11-07 08:32:04,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-07 08:32:04,429 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:32:04,429 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:32:04,430 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 08:32:04,430 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 08:32:04,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:32:04,431 INFO L85 PathProgramCache]: Analyzing trace with hash -764151860, now seen corresponding path program 1 times [2021-11-07 08:32:04,431 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:32:04,431 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129746201] [2021-11-07 08:32:04,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:32:04,432 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:32:04,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:32:04,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:32:04,560 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:32:04,560 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129746201] [2021-11-07 08:32:04,560 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1129746201] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:32:04,561 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:32:04,561 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 08:32:04,576 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977145582] [2021-11-07 08:32:04,578 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 08:32:04,578 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:32:04,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 08:32:04,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 08:32:04,579 INFO L87 Difference]: Start difference. First operand 29 states and 35 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:32:04,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:32:04,595 INFO L93 Difference]: Finished difference Result 53 states and 65 transitions. [2021-11-07 08:32:04,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 08:32:04,596 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-11-07 08:32:04,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:32:04,597 INFO L225 Difference]: With dead ends: 53 [2021-11-07 08:32:04,597 INFO L226 Difference]: Without dead ends: 33 [2021-11-07 08:32:04,598 INFO L786 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 [2021-11-07 08:32:04,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2021-11-07 08:32:04,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 30. [2021-11-07 08:32:04,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 1.2413793103448276) internal successors, (36), 29 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:32:04,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 36 transitions. [2021-11-07 08:32:04,604 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 36 transitions. Word has length 18 [2021-11-07 08:32:04,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:32:04,604 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 36 transitions. [2021-11-07 08:32:04,605 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:32:04,605 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 36 transitions. [2021-11-07 08:32:04,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-07 08:32:04,606 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:32:04,606 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:32:04,606 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-07 08:32:04,607 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 08:32:04,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:32:04,608 INFO L85 PathProgramCache]: Analyzing trace with hash 233309060, now seen corresponding path program 1 times [2021-11-07 08:32:04,608 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:32:04,608 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106002871] [2021-11-07 08:32:04,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:32:04,609 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:32:04,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:32:04,953 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:32:04,954 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:32:04,954 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106002871] [2021-11-07 08:32:04,954 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [106002871] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:32:04,955 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:32:04,955 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-07 08:32:04,955 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340337141] [2021-11-07 08:32:04,955 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-07 08:32:04,956 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:32:04,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-07 08:32:04,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-11-07 08:32:04,957 INFO L87 Difference]: Start difference. First operand 30 states and 36 transitions. Second operand has 10 states, 10 states have (on average 2.2) internal successors, (22), 10 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) [2021-11-07 08:32:05,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:32:05,263 INFO L93 Difference]: Finished difference Result 41 states and 50 transitions. [2021-11-07 08:32:05,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-07 08:32:05,265 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.2) internal successors, (22), 10 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) Word has length 22 [2021-11-07 08:32:05,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:32:05,266 INFO L225 Difference]: With dead ends: 41 [2021-11-07 08:32:05,266 INFO L226 Difference]: Without dead ends: 30 [2021-11-07 08:32:05,267 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=89, Invalid=183, Unknown=0, NotChecked=0, Total=272 [2021-11-07 08:32:05,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-11-07 08:32:05,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2021-11-07 08:32:05,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 1.206896551724138) internal successors, (35), 29 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:32:05,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 35 transitions. [2021-11-07 08:32:05,274 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 35 transitions. Word has length 22 [2021-11-07 08:32:05,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:32:05,274 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 35 transitions. [2021-11-07 08:32:05,275 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.2) internal successors, (22), 10 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) [2021-11-07 08:32:05,275 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 35 transitions. [2021-11-07 08:32:05,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-07 08:32:05,276 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:32:05,276 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-07 08:32:05,276 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-07 08:32:05,277 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 08:32:05,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:32:05,278 INFO L85 PathProgramCache]: Analyzing trace with hash 1622873675, now seen corresponding path program 1 times [2021-11-07 08:32:05,278 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:32:05,278 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496983131] [2021-11-07 08:32:05,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:32:05,279 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:32:05,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:32:05,710 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:32:05,710 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:32:05,711 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496983131] [2021-11-07 08:32:05,715 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [496983131] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:32:05,716 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1814692191] [2021-11-07 08:32:05,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:32:05,716 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:32:05,717 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b68991f1-42f2-4d1a-962e-e2cfd94a4531/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:32:05,721 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b68991f1-42f2-4d1a-962e-e2cfd94a4531/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 08:32:05,741 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b68991f1-42f2-4d1a-962e-e2cfd94a4531/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-07 08:32:05,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:32:05,878 INFO L263 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 73 conjunts are in the unsatisfiable core [2021-11-07 08:32:05,889 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:32:05,977 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-07 08:32:05,980 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 1 case distinctions, treesize of input 9 treesize of output 11 [2021-11-07 08:32:06,195 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:32:06,212 INFO L354 Elim1Store]: treesize reduction 26, result has 27.8 percent of original size [2021-11-07 08:32:06,213 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 22 treesize of output 29 [2021-11-07 08:32:06,439 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-07 08:32:06,585 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-11-07 08:32:06,585 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 27 [2021-11-07 08:32:06,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:32:06,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:32:06,775 INFO L354 Elim1Store]: treesize reduction 28, result has 47.2 percent of original size [2021-11-07 08:32:06,777 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 37 [2021-11-07 08:32:06,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:32:07,004 INFO L354 Elim1Store]: treesize reduction 230, result has 10.2 percent of original size [2021-11-07 08:32:07,005 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 121 treesize of output 81 [2021-11-07 08:32:07,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:32:07,027 INFO L354 Elim1Store]: treesize reduction 27, result has 20.6 percent of original size [2021-11-07 08:32:07,028 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 85 treesize of output 73 [2021-11-07 08:32:08,246 INFO L354 Elim1Store]: treesize reduction 640, result has 12.0 percent of original size [2021-11-07 08:32:08,247 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 9 new quantified variables, introduced 22 case distinctions, treesize of input 269 treesize of output 211 [2021-11-07 08:32:08,371 INFO L354 Elim1Store]: treesize reduction 432, result has 14.8 percent of original size [2021-11-07 08:32:08,372 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 508 treesize of output 440 [2021-11-07 08:32:08,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:32:08,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:32:08,488 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 42 treesize of output 18 [2021-11-07 08:32:08,549 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:32:08,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:32:08,556 INFO L354 Elim1Store]: treesize reduction 84, result has 1.2 percent of original size [2021-11-07 08:32:08,556 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 5 case distinctions, treesize of input 215 treesize of output 98 [2021-11-07 08:32:08,964 INFO L354 Elim1Store]: treesize reduction 60, result has 1.6 percent of original size [2021-11-07 08:32:08,965 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 197 treesize of output 145 [2021-11-07 08:32:09,163 INFO L354 Elim1Store]: treesize reduction 169, result has 4.5 percent of original size [2021-11-07 08:32:09,163 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 10 new quantified variables, introduced 15 case distinctions, treesize of input 154 treesize of output 57 [2021-11-07 08:32:09,207 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:32:09,207 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1814692191] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:32:09,207 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 08:32:09,208 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 18] total 29 [2021-11-07 08:32:09,208 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773750713] [2021-11-07 08:32:09,209 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2021-11-07 08:32:09,209 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:32:09,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-11-07 08:32:09,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=726, Unknown=0, NotChecked=0, Total=812 [2021-11-07 08:32:09,211 INFO L87 Difference]: Start difference. First operand 30 states and 35 transitions. Second operand has 29 states, 29 states have (on average 1.5862068965517242) internal successors, (46), 29 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:32:16,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:32:16,085 INFO L93 Difference]: Finished difference Result 62 states and 74 transitions. [2021-11-07 08:32:16,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-11-07 08:32:16,086 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 1.5862068965517242) internal successors, (46), 29 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-11-07 08:32:16,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:32:16,087 INFO L225 Difference]: With dead ends: 62 [2021-11-07 08:32:16,087 INFO L226 Difference]: Without dead ends: 50 [2021-11-07 08:32:16,089 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 497 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=418, Invalid=2031, Unknown=1, NotChecked=0, Total=2450 [2021-11-07 08:32:16,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-11-07 08:32:16,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 32. [2021-11-07 08:32:16,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 31 states have (on average 1.1935483870967742) internal successors, (37), 31 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:32:16,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 37 transitions. [2021-11-07 08:32:16,097 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 37 transitions. Word has length 25 [2021-11-07 08:32:16,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:32:16,098 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 37 transitions. [2021-11-07 08:32:16,098 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 1.5862068965517242) internal successors, (46), 29 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:32:16,098 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 37 transitions. [2021-11-07 08:32:16,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-07 08:32:16,099 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:32:16,100 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-07 08:32:16,138 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b68991f1-42f2-4d1a-962e-e2cfd94a4531/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-07 08:32:16,312 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b68991f1-42f2-4d1a-962e-e2cfd94a4531/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:32:16,313 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 08:32:16,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:32:16,313 INFO L85 PathProgramCache]: Analyzing trace with hash 282933254, now seen corresponding path program 1 times [2021-11-07 08:32:16,313 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:32:16,314 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767414778] [2021-11-07 08:32:16,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:32:16,314 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:32:16,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:32:17,117 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:32:17,118 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:32:17,118 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767414778] [2021-11-07 08:32:17,118 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [767414778] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:32:17,118 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [150574720] [2021-11-07 08:32:17,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:32:17,119 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:32:17,119 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b68991f1-42f2-4d1a-962e-e2cfd94a4531/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:32:17,125 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b68991f1-42f2-4d1a-962e-e2cfd94a4531/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 08:32:17,141 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b68991f1-42f2-4d1a-962e-e2cfd94a4531/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-07 08:32:17,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:32:17,300 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 74 conjunts are in the unsatisfiable core [2021-11-07 08:32:17,303 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:32:17,329 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-07 08:32:17,329 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 18 [2021-11-07 08:32:17,571 INFO L354 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2021-11-07 08:32:17,571 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 22 treesize of output 33 [2021-11-07 08:32:17,799 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-07 08:32:17,954 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-11-07 08:32:17,954 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 31 [2021-11-07 08:32:18,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:32:18,120 INFO L354 Elim1Store]: treesize reduction 8, result has 75.8 percent of original size [2021-11-07 08:32:18,121 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 37 treesize of output 37 [2021-11-07 08:32:18,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:32:18,363 INFO L354 Elim1Store]: treesize reduction 230, result has 10.2 percent of original size [2021-11-07 08:32:18,364 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 136 treesize of output 84 [2021-11-07 08:32:18,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:32:18,379 INFO L354 Elim1Store]: treesize reduction 27, result has 20.6 percent of original size [2021-11-07 08:32:18,381 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 121 treesize of output 97 [2021-11-07 08:32:19,406 INFO L354 Elim1Store]: treesize reduction 564, result has 14.4 percent of original size [2021-11-07 08:32:19,407 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 8 new quantified variables, introduced 16 case distinctions, treesize of input 418 treesize of output 216 [2021-11-07 08:32:19,493 INFO L354 Elim1Store]: treesize reduction 244, result has 17.3 percent of original size [2021-11-07 08:32:19,494 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 6 new quantified variables, introduced 7 case distinctions, treesize of input 700 treesize of output 474 [2021-11-07 08:32:19,933 INFO L354 Elim1Store]: treesize reduction 76, result has 1.3 percent of original size [2021-11-07 08:32:19,933 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 7 new quantified variables, introduced 5 case distinctions, treesize of input 418 treesize of output 131 [2021-11-07 08:32:19,989 INFO L354 Elim1Store]: treesize reduction 92, result has 1.1 percent of original size [2021-11-07 08:32:19,989 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 301 treesize of output 200 [2021-11-07 08:32:20,137 INFO L354 Elim1Store]: treesize reduction 36, result has 2.7 percent of original size [2021-11-07 08:32:20,137 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 6 new quantified variables, introduced 3 case distinctions, treesize of input 207 treesize of output 148 [2021-11-07 08:32:20,260 INFO L354 Elim1Store]: treesize reduction 72, result has 1.4 percent of original size [2021-11-07 08:32:20,261 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 7 new quantified variables, introduced 6 case distinctions, treesize of input 139 treesize of output 44 [2021-11-07 08:32:20,309 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:32:20,309 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [150574720] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:32:20,310 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 08:32:20,310 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 32 [2021-11-07 08:32:20,310 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61930342] [2021-11-07 08:32:20,311 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2021-11-07 08:32:20,311 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:32:20,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-11-07 08:32:20,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=913, Unknown=0, NotChecked=0, Total=992 [2021-11-07 08:32:20,313 INFO L87 Difference]: Start difference. First operand 32 states and 37 transitions. Second operand has 32 states, 32 states have (on average 1.5625) internal successors, (50), 32 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:32:22,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:32:22,811 INFO L93 Difference]: Finished difference Result 73 states and 87 transitions. [2021-11-07 08:32:22,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-07 08:32:22,811 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 1.5625) internal successors, (50), 32 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-11-07 08:32:22,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:32:22,812 INFO L225 Difference]: With dead ends: 73 [2021-11-07 08:32:22,812 INFO L226 Difference]: Without dead ends: 65 [2021-11-07 08:32:22,814 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=270, Invalid=1892, Unknown=0, NotChecked=0, Total=2162 [2021-11-07 08:32:22,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2021-11-07 08:32:22,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 50. [2021-11-07 08:32:22,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 49 states have (on average 1.163265306122449) internal successors, (57), 49 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:32:22,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 57 transitions. [2021-11-07 08:32:22,825 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 57 transitions. Word has length 27 [2021-11-07 08:32:22,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:32:22,825 INFO L470 AbstractCegarLoop]: Abstraction has 50 states and 57 transitions. [2021-11-07 08:32:22,825 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 1.5625) internal successors, (50), 32 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:32:22,826 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 57 transitions. [2021-11-07 08:32:22,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-07 08:32:22,827 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:32:22,827 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-07 08:32:22,852 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b68991f1-42f2-4d1a-962e-e2cfd94a4531/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-07 08:32:23,036 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b68991f1-42f2-4d1a-962e-e2cfd94a4531/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:32:23,037 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 08:32:23,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:32:23,037 INFO L85 PathProgramCache]: Analyzing trace with hash 1362646977, now seen corresponding path program 1 times [2021-11-07 08:32:23,037 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:32:23,037 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588848823] [2021-11-07 08:32:23,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:32:23,037 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:32:23,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:32:25,123 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:32:25,124 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:32:25,124 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588848823] [2021-11-07 08:32:25,124 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1588848823] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:32:25,124 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [518946698] [2021-11-07 08:32:25,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:32:25,125 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:32:25,125 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b68991f1-42f2-4d1a-962e-e2cfd94a4531/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:32:25,132 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b68991f1-42f2-4d1a-962e-e2cfd94a4531/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 08:32:25,135 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b68991f1-42f2-4d1a-962e-e2cfd94a4531/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-07 08:32:25,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:32:25,379 WARN L261 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 132 conjunts are in the unsatisfiable core [2021-11-07 08:32:25,383 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:32:25,422 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-07 08:32:25,422 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 1 case distinctions, treesize of input 9 treesize of output 11 [2021-11-07 08:32:25,692 INFO L354 Elim1Store]: treesize reduction 44, result has 30.2 percent of original size [2021-11-07 08:32:25,693 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 22 treesize of output 33 [2021-11-07 08:32:25,843 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 11 treesize of output 7 [2021-11-07 08:32:25,944 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2021-11-07 08:32:25,957 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 11 treesize of output 7 [2021-11-07 08:32:26,133 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-11-07 08:32:26,133 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 49 [2021-11-07 08:32:26,155 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-11-07 08:32:26,156 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 34 [2021-11-07 08:32:26,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:32:26,348 INFO L354 Elim1Store]: treesize reduction 28, result has 31.7 percent of original size [2021-11-07 08:32:26,349 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 40 treesize of output 40 [2021-11-07 08:32:26,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:32:26,568 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:32:26,571 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 108 treesize of output 88 [2021-11-07 08:32:26,576 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 97 treesize of output 85 [2021-11-07 08:32:26,600 INFO L354 Elim1Store]: treesize reduction 29, result has 27.5 percent of original size [2021-11-07 08:32:26,600 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 82 treesize of output 81 [2021-11-07 08:32:26,604 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:32:26,605 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:32:26,614 INFO L354 Elim1Store]: treesize reduction 41, result has 21.2 percent of original size [2021-11-07 08:32:26,614 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 71 treesize of output 66 [2021-11-07 08:32:27,630 INFO L354 Elim1Store]: treesize reduction 414, result has 18.7 percent of original size [2021-11-07 08:32:27,630 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 8 new quantified variables, introduced 11 case distinctions, treesize of input 582 treesize of output 319 [2021-11-07 08:32:27,825 INFO L354 Elim1Store]: treesize reduction 883, result has 12.7 percent of original size [2021-11-07 08:32:27,825 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 8 new quantified variables, introduced 16 case distinctions, treesize of input 581 treesize of output 460 [2021-11-07 08:32:27,863 INFO L354 Elim1Store]: treesize reduction 65, result has 22.6 percent of original size [2021-11-07 08:32:27,864 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 515 treesize of output 503 [2021-11-07 08:32:27,897 INFO L354 Elim1Store]: treesize reduction 89, result has 17.6 percent of original size [2021-11-07 08:32:27,898 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 500 treesize of output 468 [2021-11-07 08:32:27,968 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:32:27,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:32:27,975 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-11-07 08:32:27,976 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 57 treesize of output 21 [2021-11-07 08:32:28,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:32:28,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:32:28,111 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:32:28,119 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-11-07 08:32:28,126 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 1 case distinctions, treesize of input 68 treesize of output 24 [2021-11-07 08:32:28,451 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:32:28,452 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 08:32:28,457 INFO L354 Elim1Store]: treesize reduction 20, result has 4.8 percent of original size [2021-11-07 08:32:28,457 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 178 treesize of output 77 [2021-11-07 08:32:28,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:32:28,728 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 08:32:28,741 INFO L354 Elim1Store]: treesize reduction 41, result has 22.6 percent of original size [2021-11-07 08:32:28,741 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 189 treesize of output 92 [2021-11-07 08:32:29,611 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:32:29,616 INFO L354 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size [2021-11-07 08:32:29,617 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 126 treesize of output 78 [2021-11-07 08:32:29,775 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:32:29,782 INFO L354 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size [2021-11-07 08:32:29,783 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 134 treesize of output 86 [2021-11-07 08:32:30,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:32:30,089 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 08:32:30,095 INFO L354 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size [2021-11-07 08:32:30,095 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 127 treesize of output 86 [2021-11-07 08:32:30,167 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:32:30,168 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 08:32:30,174 INFO L354 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size [2021-11-07 08:32:30,175 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 119 treesize of output 78 [2021-11-07 08:32:30,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:32:30,485 INFO L354 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size [2021-11-07 08:32:30,485 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 139 treesize of output 94 [2021-11-07 08:32:30,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:32:30,523 INFO L354 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size [2021-11-07 08:32:30,524 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 126 treesize of output 78 [2021-11-07 08:32:30,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:32:30,925 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 08:32:30,932 INFO L354 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size [2021-11-07 08:32:30,932 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 119 treesize of output 78 [2021-11-07 08:32:31,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:32:31,042 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 08:32:31,050 INFO L354 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size [2021-11-07 08:32:31,050 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 132 treesize of output 91 [2021-11-07 08:32:31,460 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-07 08:32:31,566 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-07 08:32:32,170 INFO L354 Elim1Store]: treesize reduction 80, result has 1.2 percent of original size [2021-11-07 08:32:32,170 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 211 treesize of output 145 [2021-11-07 08:32:32,363 INFO L354 Elim1Store]: treesize reduction 113, result has 6.6 percent of original size [2021-11-07 08:32:32,364 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 10 case distinctions, treesize of input 241 treesize of output 167 [2021-11-07 08:32:32,523 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-07 08:32:32,527 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 173 treesize of output 128 [2021-11-07 08:32:32,587 INFO L354 Elim1Store]: treesize reduction 80, result has 1.2 percent of original size [2021-11-07 08:32:32,587 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 211 treesize of output 149 [2021-11-07 08:32:44,582 WARN L207 SmtUtils]: Spent 8.77 s on a formula simplification. DAG size of input: 216 DAG size of output: 185 [2021-11-07 08:32:53,933 WARN L207 SmtUtils]: Spent 8.57 s on a formula simplification that was a NOOP. DAG size: 193 [2021-11-07 08:33:02,996 WARN L207 SmtUtils]: Spent 8.44 s on a formula simplification that was a NOOP. DAG size: 205 [2021-11-07 08:33:07,911 INFO L354 Elim1Store]: treesize reduction 597, result has 74.2 percent of original size [2021-11-07 08:33:07,912 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 19 select indices, 19 select index equivalence classes, 0 disjoint index pairs (out of 171 index pairs), introduced 30 new quantified variables, introduced 171 case distinctions, treesize of input 871 treesize of output 2255