./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-pthread/cs_fib_longer_true-unreach-call.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 635dfa2a Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_c03cdd4b-ef7b-4020-b304-3ea86d1e95f0/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_c03cdd4b-ef7b-4020-b304-3ea86d1e95f0/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_c03cdd4b-ef7b-4020-b304-3ea86d1e95f0/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_c03cdd4b-ef7b-4020-b304-3ea86d1e95f0/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/seq-pthread/cs_fib_longer_true-unreach-call.i -s /tmp/vcloud-vcloud-master/worker/working_dir_c03cdd4b-ef7b-4020-b304-3ea86d1e95f0/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_c03cdd4b-ef7b-4020-b304-3ea86d1e95f0/bin-2019/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 814ad0e6afd77f926a64080aad9867e43891a945 .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_c03cdd4b-ef7b-4020-b304-3ea86d1e95f0/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_c03cdd4b-ef7b-4020-b304-3ea86d1e95f0/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_c03cdd4b-ef7b-4020-b304-3ea86d1e95f0/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_c03cdd4b-ef7b-4020-b304-3ea86d1e95f0/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/seq-pthread/cs_fib_longer_true-unreach-call.i -s /tmp/vcloud-vcloud-master/worker/working_dir_c03cdd4b-ef7b-4020-b304-3ea86d1e95f0/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_c03cdd4b-ef7b-4020-b304-3ea86d1e95f0/bin-2019/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 814ad0e6afd77f926a64080aad9867e43891a945 ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000) Connection to SMT solver broken --- Real Ultimate output --- This is Ultimate 0.1.23-635dfa2 [2018-12-08 18:19:16,099 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-08 18:19:16,100 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-08 18:19:16,108 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-08 18:19:16,109 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-08 18:19:16,109 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-08 18:19:16,110 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-08 18:19:16,111 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-08 18:19:16,113 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-08 18:19:16,113 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-08 18:19:16,114 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-08 18:19:16,114 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-08 18:19:16,115 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-08 18:19:16,115 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-08 18:19:16,116 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-08 18:19:16,117 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-08 18:19:16,117 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-08 18:19:16,119 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-08 18:19:16,120 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-08 18:19:16,121 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-08 18:19:16,122 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-08 18:19:16,123 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-08 18:19:16,125 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-08 18:19:16,125 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-08 18:19:16,125 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-08 18:19:16,126 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-08 18:19:16,126 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-08 18:19:16,127 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-08 18:19:16,128 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-08 18:19:16,129 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-08 18:19:16,129 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-08 18:19:16,129 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-08 18:19:16,129 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-08 18:19:16,130 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-08 18:19:16,130 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-08 18:19:16,131 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-08 18:19:16,131 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_c03cdd4b-ef7b-4020-b304-3ea86d1e95f0/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-12-08 18:19:16,142 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-08 18:19:16,142 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-08 18:19:16,142 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-08 18:19:16,142 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-08 18:19:16,142 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-08 18:19:16,142 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-08 18:19:16,143 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-08 18:19:16,143 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-12-08 18:19:16,143 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-08 18:19:16,143 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-12-08 18:19:16,143 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-12-08 18:19:16,143 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-12-08 18:19:16,143 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-08 18:19:16,144 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-08 18:19:16,144 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-08 18:19:16,144 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-08 18:19:16,144 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-08 18:19:16,144 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-08 18:19:16,144 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-08 18:19:16,145 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-08 18:19:16,145 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-08 18:19:16,145 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-08 18:19:16,145 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-08 18:19:16,145 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-08 18:19:16,145 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-08 18:19:16,145 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-08 18:19:16,145 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-08 18:19:16,145 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-08 18:19:16,146 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-08 18:19:16,146 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-08 18:19:16,146 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-08 18:19:16,146 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-08 18:19:16,146 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-12-08 18:19:16,146 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-08 18:19:16,146 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-08 18:19:16,146 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-12-08 18:19:16,146 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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-vcloud-master/worker/working_dir_c03cdd4b-ef7b-4020-b304-3ea86d1e95f0/bin-2019/utaipan 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(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 814ad0e6afd77f926a64080aad9867e43891a945 [2018-12-08 18:19:16,169 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-08 18:19:16,178 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-08 18:19:16,180 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-08 18:19:16,181 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-08 18:19:16,181 INFO L276 PluginConnector]: CDTParser initialized [2018-12-08 18:19:16,182 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_c03cdd4b-ef7b-4020-b304-3ea86d1e95f0/bin-2019/utaipan/../../sv-benchmarks/c/seq-pthread/cs_fib_longer_true-unreach-call.i [2018-12-08 18:19:16,225 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_c03cdd4b-ef7b-4020-b304-3ea86d1e95f0/bin-2019/utaipan/data/bd9651300/f9fd08dcb6b34dae9ae9787a765e8e69/FLAG3d7457940 [2018-12-08 18:19:16,601 INFO L307 CDTParser]: Found 1 translation units. [2018-12-08 18:19:16,601 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_c03cdd4b-ef7b-4020-b304-3ea86d1e95f0/sv-benchmarks/c/seq-pthread/cs_fib_longer_true-unreach-call.i [2018-12-08 18:19:16,610 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_c03cdd4b-ef7b-4020-b304-3ea86d1e95f0/bin-2019/utaipan/data/bd9651300/f9fd08dcb6b34dae9ae9787a765e8e69/FLAG3d7457940 [2018-12-08 18:19:16,619 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_c03cdd4b-ef7b-4020-b304-3ea86d1e95f0/bin-2019/utaipan/data/bd9651300/f9fd08dcb6b34dae9ae9787a765e8e69 [2018-12-08 18:19:16,620 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-08 18:19:16,621 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-08 18:19:16,622 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-08 18:19:16,622 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-08 18:19:16,624 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-08 18:19:16,624 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.12 06:19:16" (1/1) ... [2018-12-08 18:19:16,626 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7014c445 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 06:19:16, skipping insertion in model container [2018-12-08 18:19:16,626 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.12 06:19:16" (1/1) ... [2018-12-08 18:19:16,630 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-08 18:19:16,653 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-08 18:19:16,938 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-08 18:19:16,951 INFO L191 MainTranslator]: Completed pre-run [2018-12-08 18:19:17,006 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-08 18:19:17,034 INFO L195 MainTranslator]: Completed translation [2018-12-08 18:19:17,035 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 06:19:17 WrapperNode [2018-12-08 18:19:17,035 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-08 18:19:17,035 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-08 18:19:17,035 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-08 18:19:17,035 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-08 18:19:17,040 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 06:19:17" (1/1) ... [2018-12-08 18:19:17,054 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 06:19:17" (1/1) ... [2018-12-08 18:19:17,060 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-08 18:19:17,061 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-08 18:19:17,061 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-08 18:19:17,061 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-08 18:19:17,066 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 06:19:17" (1/1) ... [2018-12-08 18:19:17,066 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 06:19:17" (1/1) ... [2018-12-08 18:19:17,071 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 06:19:17" (1/1) ... [2018-12-08 18:19:17,071 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 06:19:17" (1/1) ... [2018-12-08 18:19:17,095 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 06:19:17" (1/1) ... [2018-12-08 18:19:17,099 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 06:19:17" (1/1) ... [2018-12-08 18:19:17,102 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 06:19:17" (1/1) ... [2018-12-08 18:19:17,105 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-08 18:19:17,106 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-08 18:19:17,106 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-08 18:19:17,106 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-08 18:19:17,106 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 06:19:17" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c03cdd4b-ef7b-4020-b304-3ea86d1e95f0/bin-2019/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-08 18:19:17,146 INFO L130 BoogieDeclarations]: Found specification of procedure main_thread [2018-12-08 18:19:17,147 INFO L138 BoogieDeclarations]: Found implementation of procedure main_thread [2018-12-08 18:19:17,147 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-08 18:19:17,147 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-12-08 18:19:17,147 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-12-08 18:19:17,147 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-12-08 18:19:17,147 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2018-12-08 18:19:17,147 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2018-12-08 18:19:17,148 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2018-12-08 18:19:17,148 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2018-12-08 18:19:17,148 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-12-08 18:19:17,148 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-08 18:19:17,148 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-08 18:19:17,148 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-08 18:19:17,148 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-08 18:19:17,148 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-12-08 18:19:17,148 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_create [2018-12-08 18:19:17,149 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_create [2018-12-08 18:19:17,149 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-12-08 18:19:17,149 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~$Pointer$ [2018-12-08 18:19:17,149 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~$Pointer$ [2018-12-08 18:19:17,149 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-08 18:19:17,149 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2018-12-08 18:19:17,149 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_cs [2018-12-08 18:19:17,149 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_cs [2018-12-08 18:19:17,149 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2018-12-08 18:19:17,149 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-08 18:19:17,150 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-08 18:19:20,287 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-08 18:19:20,287 INFO L280 CfgBuilder]: Removed 4 assue(true) statements. [2018-12-08 18:19:20,287 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 06:19:20 BoogieIcfgContainer [2018-12-08 18:19:20,287 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-08 18:19:20,288 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-08 18:19:20,288 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-08 18:19:20,290 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-08 18:19:20,290 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.12 06:19:16" (1/3) ... [2018-12-08 18:19:20,290 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21b5f846 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.12 06:19:20, skipping insertion in model container [2018-12-08 18:19:20,291 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 06:19:17" (2/3) ... [2018-12-08 18:19:20,291 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21b5f846 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.12 06:19:20, skipping insertion in model container [2018-12-08 18:19:20,291 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 06:19:20" (3/3) ... [2018-12-08 18:19:20,292 INFO L112 eAbstractionObserver]: Analyzing ICFG cs_fib_longer_true-unreach-call.i [2018-12-08 18:19:20,298 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-08 18:19:20,303 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-08 18:19:20,313 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-08 18:19:20,331 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-08 18:19:20,331 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-08 18:19:20,331 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-08 18:19:20,331 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-08 18:19:20,331 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-08 18:19:20,332 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-08 18:19:20,332 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-08 18:19:20,332 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-08 18:19:20,343 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states. [2018-12-08 18:19:20,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-12-08 18:19:20,347 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 18:19:20,347 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 18:19:20,348 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-08 18:19:20,352 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 18:19:20,352 INFO L82 PathProgramCache]: Analyzing trace with hash 649759861, now seen corresponding path program 1 times [2018-12-08 18:19:20,353 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-08 18:19:20,387 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 18:19:20,387 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 18:19:20,387 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 18:19:20,388 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-08 18:19:20,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 18:19:22,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 18:19:22,106 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-08 18:19:22,106 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-12-08 18:19:22,106 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-08 18:19:22,109 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-08 18:19:22,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-08 18:19:22,117 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-08 18:19:22,119 INFO L87 Difference]: Start difference. First operand 108 states. Second operand 3 states. [2018-12-08 18:19:22,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 18:19:22,163 INFO L93 Difference]: Finished difference Result 212 states and 322 transitions. [2018-12-08 18:19:22,164 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-08 18:19:22,165 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2018-12-08 18:19:22,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 18:19:22,171 INFO L225 Difference]: With dead ends: 212 [2018-12-08 18:19:22,172 INFO L226 Difference]: Without dead ends: 104 [2018-12-08 18:19:22,174 INFO L631 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 [2018-12-08 18:19:22,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2018-12-08 18:19:22,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 101. [2018-12-08 18:19:22,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2018-12-08 18:19:22,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 146 transitions. [2018-12-08 18:19:22,210 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 146 transitions. Word has length 18 [2018-12-08 18:19:22,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 18:19:22,210 INFO L480 AbstractCegarLoop]: Abstraction has 101 states and 146 transitions. [2018-12-08 18:19:22,210 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-08 18:19:22,210 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 146 transitions. [2018-12-08 18:19:22,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-12-08 18:19:22,212 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 18:19:22,212 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 18:19:22,212 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-08 18:19:22,212 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 18:19:22,213 INFO L82 PathProgramCache]: Analyzing trace with hash -1255387306, now seen corresponding path program 1 times [2018-12-08 18:19:22,213 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-08 18:19:22,214 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 18:19:22,214 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 18:19:22,214 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 18:19:22,214 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-08 18:19:22,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 18:19:22,266 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 18:19:22,267 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-08 18:19:22,267 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-12-08 18:19:22,267 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-08 18:19:22,268 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-08 18:19:22,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-08 18:19:22,268 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-08 18:19:22,269 INFO L87 Difference]: Start difference. First operand 101 states and 146 transitions. Second operand 3 states. [2018-12-08 18:19:22,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 18:19:22,292 INFO L93 Difference]: Finished difference Result 197 states and 288 transitions. [2018-12-08 18:19:22,293 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-08 18:19:22,293 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2018-12-08 18:19:22,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 18:19:22,295 INFO L225 Difference]: With dead ends: 197 [2018-12-08 18:19:22,295 INFO L226 Difference]: Without dead ends: 103 [2018-12-08 18:19:22,296 INFO L631 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 [2018-12-08 18:19:22,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2018-12-08 18:19:22,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 102. [2018-12-08 18:19:22,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2018-12-08 18:19:22,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 147 transitions. [2018-12-08 18:19:22,306 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 147 transitions. Word has length 21 [2018-12-08 18:19:22,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 18:19:22,307 INFO L480 AbstractCegarLoop]: Abstraction has 102 states and 147 transitions. [2018-12-08 18:19:22,307 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-08 18:19:22,307 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 147 transitions. [2018-12-08 18:19:22,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-12-08 18:19:22,308 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 18:19:22,308 INFO L402 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] [2018-12-08 18:19:22,308 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-08 18:19:22,308 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 18:19:22,308 INFO L82 PathProgramCache]: Analyzing trace with hash -744986184, now seen corresponding path program 1 times [2018-12-08 18:19:22,308 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-08 18:19:22,309 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 18:19:22,310 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 18:19:22,310 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 18:19:22,310 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-08 18:19:22,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 18:19:23,876 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-12-08 18:19:23,877 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-08 18:19:23,877 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-12-08 18:19:23,877 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-08 18:19:23,877 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-08 18:19:23,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-08 18:19:23,877 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-12-08 18:19:23,877 INFO L87 Difference]: Start difference. First operand 102 states and 147 transitions. Second operand 5 states. [2018-12-08 18:19:23,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 18:19:23,920 INFO L93 Difference]: Finished difference Result 189 states and 279 transitions. [2018-12-08 18:19:23,920 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-08 18:19:23,921 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 23 [2018-12-08 18:19:23,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 18:19:23,923 INFO L225 Difference]: With dead ends: 189 [2018-12-08 18:19:23,923 INFO L226 Difference]: Without dead ends: 181 [2018-12-08 18:19:23,923 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-12-08 18:19:23,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2018-12-08 18:19:23,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 180. [2018-12-08 18:19:23,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 180 states. [2018-12-08 18:19:23,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 268 transitions. [2018-12-08 18:19:23,936 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 268 transitions. Word has length 23 [2018-12-08 18:19:23,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 18:19:23,936 INFO L480 AbstractCegarLoop]: Abstraction has 180 states and 268 transitions. [2018-12-08 18:19:23,936 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-08 18:19:23,936 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 268 transitions. [2018-12-08 18:19:23,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2018-12-08 18:19:23,938 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 18:19:23,938 INFO L402 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 18:19:23,938 INFO L423 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-08 18:19:23,938 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 18:19:23,938 INFO L82 PathProgramCache]: Analyzing trace with hash 1967376110, now seen corresponding path program 1 times [2018-12-08 18:19:23,938 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-08 18:19:23,939 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 18:19:23,939 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 18:19:23,939 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 18:19:23,939 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-08 18:19:23,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 18:19:25,823 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2018-12-08 18:19:25,824 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-08 18:19:25,824 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-08 18:19:25,824 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-08 18:19:25,824 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-08 18:19:25,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-08 18:19:25,824 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-08 18:19:25,825 INFO L87 Difference]: Start difference. First operand 180 states and 268 transitions. Second operand 4 states. [2018-12-08 18:19:27,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 18:19:27,909 INFO L93 Difference]: Finished difference Result 365 states and 553 transitions. [2018-12-08 18:19:27,910 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-08 18:19:27,910 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 79 [2018-12-08 18:19:27,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 18:19:27,913 INFO L225 Difference]: With dead ends: 365 [2018-12-08 18:19:27,913 INFO L226 Difference]: Without dead ends: 352 [2018-12-08 18:19:27,913 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-12-08 18:19:27,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states. [2018-12-08 18:19:27,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 341. [2018-12-08 18:19:27,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 341 states. [2018-12-08 18:19:27,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 521 transitions. [2018-12-08 18:19:27,939 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 521 transitions. Word has length 79 [2018-12-08 18:19:27,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 18:19:27,939 INFO L480 AbstractCegarLoop]: Abstraction has 341 states and 521 transitions. [2018-12-08 18:19:27,939 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-08 18:19:27,939 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 521 transitions. [2018-12-08 18:19:27,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2018-12-08 18:19:27,941 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 18:19:27,941 INFO L402 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 18:19:27,941 INFO L423 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-08 18:19:27,942 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 18:19:27,942 INFO L82 PathProgramCache]: Analyzing trace with hash -677381746, now seen corresponding path program 1 times [2018-12-08 18:19:27,942 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-08 18:19:27,943 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 18:19:27,943 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 18:19:27,943 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 18:19:27,943 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-08 18:19:27,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 18:19:29,658 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2018-12-08 18:19:29,658 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-08 18:19:29,659 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-08 18:19:29,659 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-08 18:19:29,659 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-08 18:19:29,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-08 18:19:29,659 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-08 18:19:29,659 INFO L87 Difference]: Start difference. First operand 341 states and 521 transitions. Second operand 4 states. [2018-12-08 18:19:31,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 18:19:31,730 INFO L93 Difference]: Finished difference Result 590 states and 885 transitions. [2018-12-08 18:19:31,731 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-08 18:19:31,731 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 79 [2018-12-08 18:19:31,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 18:19:31,732 INFO L225 Difference]: With dead ends: 590 [2018-12-08 18:19:31,732 INFO L226 Difference]: Without dead ends: 265 [2018-12-08 18:19:31,733 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-12-08 18:19:31,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2018-12-08 18:19:31,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 257. [2018-12-08 18:19:31,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 257 states. [2018-12-08 18:19:31,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 371 transitions. [2018-12-08 18:19:31,748 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 371 transitions. Word has length 79 [2018-12-08 18:19:31,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 18:19:31,748 INFO L480 AbstractCegarLoop]: Abstraction has 257 states and 371 transitions. [2018-12-08 18:19:31,748 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-08 18:19:31,748 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 371 transitions. [2018-12-08 18:19:31,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2018-12-08 18:19:31,750 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 18:19:31,750 INFO L402 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 18:19:31,750 INFO L423 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-08 18:19:31,751 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 18:19:31,751 INFO L82 PathProgramCache]: Analyzing trace with hash 616356910, now seen corresponding path program 1 times [2018-12-08 18:19:31,751 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-08 18:19:31,751 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 18:19:31,751 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 18:19:31,752 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 18:19:31,752 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-08 18:19:31,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 18:19:33,303 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2018-12-08 18:19:33,303 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-08 18:19:33,303 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-08 18:19:33,304 INFO L203 CegarAbsIntRunner]: Running AI on error trace of length 80 with the following transitions: [2018-12-08 18:19:33,305 INFO L205 CegarAbsIntRunner]: [0], [5], [7], [12], [14], [19], [22], [28], [33], [38], [54], [55], [61], [63], [69], [71], [73], [77], [81], [84], [86], [89], [96], [109], [111], [124], [126], [130], [131], [132], [135], [137], [150], [151], [152], [155], [157], [161], [164], [166], [172], [177], [179], [180], [261], [262], [263], [264], [265], [266], [267], [268], [269], [270], [271], [272], [277], [278], [283], [285], [286], [291], [292], [293] [2018-12-08 18:19:33,329 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-12-08 18:19:33,329 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-12-08 18:19:38,679 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-12-08 18:19:38,680 INFO L272 AbstractInterpreter]: Visited 29 different actions 53 times. Merged at 5 different actions 16 times. Widened at 1 different actions 1 times. Performed 1311 root evaluator evaluations with a maximum evaluation depth of 7. Performed 1311 inverse root evaluator evaluations with a maximum inverse evaluation depth of 7. Found 5 fixpoints after 3 different actions. Largest state had 299 variables. [2018-12-08 18:19:38,687 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 18:19:38,687 INFO L401 sIntCurrentIteration]: Generating AbsInt predicates [2018-12-08 18:19:46,209 INFO L227 lantSequenceWeakener]: Weakened 27 states. On average, predicates are now at 62.49% of their original sizes. [2018-12-08 18:19:46,209 INFO L416 sIntCurrentIteration]: Unifying AI predicates [2018-12-08 18:19:46,327 INFO L418 sIntCurrentIteration]: We unified 78 AI predicates to 78 [2018-12-08 18:19:46,327 INFO L427 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-12-08 18:19:46,328 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-12-08 18:19:46,328 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [14] imperfect sequences [7] total 19 [2018-12-08 18:19:46,328 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-08 18:19:46,329 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-12-08 18:19:46,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-12-08 18:19:46,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2018-12-08 18:19:46,329 INFO L87 Difference]: Start difference. First operand 257 states and 371 transitions. Second operand 14 states. [2018-12-08 18:19:57,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 18:19:57,239 INFO L93 Difference]: Finished difference Result 502 states and 729 transitions. [2018-12-08 18:19:57,239 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-12-08 18:19:57,239 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 79 [2018-12-08 18:19:57,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 18:19:57,240 INFO L225 Difference]: With dead ends: 502 [2018-12-08 18:19:57,240 INFO L226 Difference]: Without dead ends: 267 [2018-12-08 18:19:57,241 INFO L631 BasicCegarLoop]: 2 DeclaredPredicates, 85 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=350, Unknown=0, NotChecked=0, Total=420 [2018-12-08 18:19:57,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2018-12-08 18:19:57,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 266. [2018-12-08 18:19:57,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 266 states. [2018-12-08 18:19:57,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 382 transitions. [2018-12-08 18:19:57,252 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 382 transitions. Word has length 79 [2018-12-08 18:19:57,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 18:19:57,252 INFO L480 AbstractCegarLoop]: Abstraction has 266 states and 382 transitions. [2018-12-08 18:19:57,252 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-12-08 18:19:57,252 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 382 transitions. [2018-12-08 18:19:57,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2018-12-08 18:19:57,253 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 18:19:57,253 INFO L402 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 18:19:57,253 INFO L423 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-08 18:19:57,253 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 18:19:57,253 INFO L82 PathProgramCache]: Analyzing trace with hash 1749547503, now seen corresponding path program 1 times [2018-12-08 18:19:57,253 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-08 18:19:57,254 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 18:19:57,254 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 18:19:57,254 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 18:19:57,254 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-08 18:19:57,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 18:19:58,805 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2018-12-08 18:19:58,805 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-08 18:19:58,805 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-12-08 18:19:58,805 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-08 18:19:58,806 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-12-08 18:19:58,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-12-08 18:19:58,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2018-12-08 18:19:58,806 INFO L87 Difference]: Start difference. First operand 266 states and 382 transitions. Second operand 8 states. [2018-12-08 18:20:01,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 18:20:01,156 INFO L93 Difference]: Finished difference Result 613 states and 926 transitions. [2018-12-08 18:20:01,156 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-12-08 18:20:01,157 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 79 [2018-12-08 18:20:01,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 18:20:01,158 INFO L225 Difference]: With dead ends: 613 [2018-12-08 18:20:01,158 INFO L226 Difference]: Without dead ends: 378 [2018-12-08 18:20:01,159 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2018-12-08 18:20:01,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378 states. [2018-12-08 18:20:01,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378 to 275. [2018-12-08 18:20:01,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 275 states. [2018-12-08 18:20:01,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 409 transitions. [2018-12-08 18:20:01,179 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 409 transitions. Word has length 79 [2018-12-08 18:20:01,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 18:20:01,179 INFO L480 AbstractCegarLoop]: Abstraction has 275 states and 409 transitions. [2018-12-08 18:20:01,179 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-12-08 18:20:01,179 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 409 transitions. [2018-12-08 18:20:01,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2018-12-08 18:20:01,180 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 18:20:01,180 INFO L402 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 18:20:01,181 INFO L423 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-08 18:20:01,181 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 18:20:01,181 INFO L82 PathProgramCache]: Analyzing trace with hash -912615794, now seen corresponding path program 1 times [2018-12-08 18:20:01,181 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-08 18:20:01,182 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 18:20:01,182 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 18:20:01,182 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 18:20:01,182 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-08 18:20:01,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 18:20:02,687 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2018-12-08 18:20:02,687 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-08 18:20:02,687 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-08 18:20:02,687 INFO L203 CegarAbsIntRunner]: Running AI on error trace of length 80 with the following transitions: [2018-12-08 18:20:02,687 INFO L205 CegarAbsIntRunner]: [0], [5], [7], [12], [14], [19], [22], [28], [33], [38], [54], [55], [61], [63], [69], [71], [73], [77], [81], [84], [86], [89], [96], [109], [111], [124], [126], [130], [131], [132], [135], [137], [150], [151], [152], [156], [157], [161], [164], [166], [172], [177], [179], [180], [261], [262], [263], [264], [265], [266], [267], [268], [269], [270], [271], [272], [277], [278], [283], [285], [286], [291], [292], [293] [2018-12-08 18:20:02,691 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-12-08 18:20:02,691 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-12-08 18:20:05,732 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-12-08 18:20:05,732 INFO L272 AbstractInterpreter]: Visited 64 different actions 96 times. Merged at 5 different actions 11 times. Widened at 1 different actions 1 times. Performed 1872 root evaluator evaluations with a maximum evaluation depth of 9. Performed 1872 inverse root evaluator evaluations with a maximum inverse evaluation depth of 9. Found 4 fixpoints after 3 different actions. Largest state had 299 variables. [2018-12-08 18:20:05,737 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 18:20:05,738 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-12-08 18:20:05,738 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-08 18:20:05,738 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c03cdd4b-ef7b-4020-b304-3ea86d1e95f0/bin-2019/utaipan/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-08 18:20:05,745 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 18:20:05,745 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-12-08 18:20:05,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 18:20:05,852 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 18:20:05,878 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2018-12-08 18:20:05,878 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-08 18:20:05,929 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2018-12-08 18:20:05,956 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-12-08 18:20:05,956 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 6 [2018-12-08 18:20:05,956 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-12-08 18:20:05,956 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-08 18:20:05,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-08 18:20:05,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-12-08 18:20:05,957 INFO L87 Difference]: Start difference. First operand 275 states and 409 transitions. Second operand 5 states. [2018-12-08 18:20:05,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 18:20:05,987 INFO L93 Difference]: Finished difference Result 546 states and 815 transitions. [2018-12-08 18:20:05,988 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-08 18:20:05,988 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 79 [2018-12-08 18:20:05,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 18:20:05,990 INFO L225 Difference]: With dead ends: 546 [2018-12-08 18:20:05,990 INFO L226 Difference]: Without dead ends: 278 [2018-12-08 18:20:05,991 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 156 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-12-08 18:20:05,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2018-12-08 18:20:06,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 277. [2018-12-08 18:20:06,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 277 states. [2018-12-08 18:20:06,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 411 transitions. [2018-12-08 18:20:06,008 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 411 transitions. Word has length 79 [2018-12-08 18:20:06,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 18:20:06,009 INFO L480 AbstractCegarLoop]: Abstraction has 277 states and 411 transitions. [2018-12-08 18:20:06,009 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-08 18:20:06,009 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 411 transitions. [2018-12-08 18:20:06,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2018-12-08 18:20:06,010 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 18:20:06,010 INFO L402 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 18:20:06,010 INFO L423 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-08 18:20:06,010 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 18:20:06,011 INFO L82 PathProgramCache]: Analyzing trace with hash -1519742352, now seen corresponding path program 2 times [2018-12-08 18:20:06,011 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-08 18:20:06,012 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 18:20:06,012 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 18:20:06,012 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 18:20:06,012 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-08 18:20:06,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 18:20:07,549 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2018-12-08 18:20:07,549 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-08 18:20:07,549 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-08 18:20:07,549 INFO L187 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-12-08 18:20:07,549 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-12-08 18:20:07,549 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-08 18:20:07,549 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c03cdd4b-ef7b-4020-b304-3ea86d1e95f0/bin-2019/utaipan/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-08 18:20:07,556 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-12-08 18:20:07,556 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2018-12-08 18:20:19,646 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2018-12-08 18:20:19,646 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-08 18:20:19,654 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 18:20:19,666 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2018-12-08 18:20:19,666 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-08 18:20:19,704 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2018-12-08 18:20:19,726 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-12-08 18:20:19,726 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 9 [2018-12-08 18:20:19,726 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-12-08 18:20:19,727 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-12-08 18:20:19,727 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-12-08 18:20:19,727 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2018-12-08 18:20:19,727 INFO L87 Difference]: Start difference. First operand 277 states and 411 transitions. Second operand 7 states. [2018-12-08 18:20:19,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 18:20:19,809 INFO L93 Difference]: Finished difference Result 566 states and 840 transitions. [2018-12-08 18:20:19,809 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-12-08 18:20:19,810 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 81 [2018-12-08 18:20:19,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 18:20:19,811 INFO L225 Difference]: With dead ends: 566 [2018-12-08 18:20:19,811 INFO L226 Difference]: Without dead ends: 296 [2018-12-08 18:20:19,812 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=81, Invalid=129, Unknown=0, NotChecked=0, Total=210 [2018-12-08 18:20:19,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2018-12-08 18:20:19,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 288. [2018-12-08 18:20:19,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 288 states. [2018-12-08 18:20:19,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 423 transitions. [2018-12-08 18:20:19,829 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 423 transitions. Word has length 81 [2018-12-08 18:20:19,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 18:20:19,829 INFO L480 AbstractCegarLoop]: Abstraction has 288 states and 423 transitions. [2018-12-08 18:20:19,829 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-12-08 18:20:19,829 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 423 transitions. [2018-12-08 18:20:19,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2018-12-08 18:20:19,831 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 18:20:19,831 INFO L402 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 18:20:19,831 INFO L423 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-08 18:20:19,831 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 18:20:19,831 INFO L82 PathProgramCache]: Analyzing trace with hash -1820662229, now seen corresponding path program 3 times [2018-12-08 18:20:19,831 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-08 18:20:19,832 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 18:20:19,832 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-08 18:20:19,832 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 18:20:19,832 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-08 18:20:19,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 18:20:21,397 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2018-12-08 18:20:21,397 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-08 18:20:21,397 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-08 18:20:21,398 INFO L187 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-12-08 18:20:21,398 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-12-08 18:20:21,398 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-08 18:20:21,398 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c03cdd4b-ef7b-4020-b304-3ea86d1e95f0/bin-2019/utaipan/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-08 18:20:21,404 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-12-08 18:20:21,404 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder TERMS_WITH_SMALL_CONSTANTS_FIRST (IT: FPandBP) [2018-12-08 18:20:21,516 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-12-08 18:20:21,516 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-08 18:20:21,522 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 18:20:21,530 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2018-12-08 18:20:21,530 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-08 18:20:21,584 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2018-12-08 18:20:21,602 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-12-08 18:20:21,602 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2018-12-08 18:20:21,602 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-12-08 18:20:21,603 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-12-08 18:20:21,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-12-08 18:20:21,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2018-12-08 18:20:21,603 INFO L87 Difference]: Start difference. First operand 288 states and 423 transitions. Second operand 6 states. [2018-12-08 18:20:21,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 18:20:21,635 INFO L93 Difference]: Finished difference Result 568 states and 838 transitions. [2018-12-08 18:20:21,636 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-08 18:20:21,636 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 92 [2018-12-08 18:20:21,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 18:20:21,637 INFO L225 Difference]: With dead ends: 568 [2018-12-08 18:20:21,637 INFO L226 Difference]: Without dead ends: 305 [2018-12-08 18:20:21,638 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2018-12-08 18:20:21,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2018-12-08 18:20:21,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 297. [2018-12-08 18:20:21,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 297 states. [2018-12-08 18:20:21,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 433 transitions. [2018-12-08 18:20:21,648 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 433 transitions. Word has length 92 [2018-12-08 18:20:21,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 18:20:21,648 INFO L480 AbstractCegarLoop]: Abstraction has 297 states and 433 transitions. [2018-12-08 18:20:21,648 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-12-08 18:20:21,648 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 433 transitions. [2018-12-08 18:20:21,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2018-12-08 18:20:21,649 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 18:20:21,649 INFO L402 BasicCegarLoop]: trace histogram [9, 9, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 18:20:21,649 INFO L423 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-08 18:20:21,649 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 18:20:21,650 INFO L82 PathProgramCache]: Analyzing trace with hash -1007390222, now seen corresponding path program 4 times [2018-12-08 18:20:21,650 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-08 18:20:21,650 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 18:20:21,650 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-08 18:20:21,650 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 18:20:21,650 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-08 18:20:21,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 18:20:23,170 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 84 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2018-12-08 18:20:23,170 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-08 18:20:23,170 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-08 18:20:23,170 INFO L187 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-12-08 18:20:23,170 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-12-08 18:20:23,170 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-08 18:20:23,171 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c03cdd4b-ef7b-4020-b304-3ea86d1e95f0/bin-2019/utaipan/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-08 18:20:23,177 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 18:20:23,177 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-12-08 18:20:23,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 18:20:23,288 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 18:20:23,302 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 84 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2018-12-08 18:20:23,302 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-08 18:20:23,358 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 84 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2018-12-08 18:20:23,384 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-12-08 18:20:23,384 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2018-12-08 18:20:23,384 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-12-08 18:20:23,384 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-12-08 18:20:23,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-12-08 18:20:23,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2018-12-08 18:20:23,385 INFO L87 Difference]: Start difference. First operand 297 states and 433 transitions. Second operand 7 states. [2018-12-08 18:20:23,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 18:20:23,432 INFO L93 Difference]: Finished difference Result 577 states and 848 transitions. [2018-12-08 18:20:23,432 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-12-08 18:20:23,433 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 101 [2018-12-08 18:20:23,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 18:20:23,434 INFO L225 Difference]: With dead ends: 577 [2018-12-08 18:20:23,434 INFO L226 Difference]: Without dead ends: 314 [2018-12-08 18:20:23,435 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 198 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2018-12-08 18:20:23,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2018-12-08 18:20:23,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 306. [2018-12-08 18:20:23,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 306 states. [2018-12-08 18:20:23,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 443 transitions. [2018-12-08 18:20:23,452 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 443 transitions. Word has length 101 [2018-12-08 18:20:23,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 18:20:23,452 INFO L480 AbstractCegarLoop]: Abstraction has 306 states and 443 transitions. [2018-12-08 18:20:23,453 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-12-08 18:20:23,453 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 443 transitions. [2018-12-08 18:20:23,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2018-12-08 18:20:23,454 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 18:20:23,454 INFO L402 BasicCegarLoop]: trace histogram [12, 12, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 18:20:23,454 INFO L423 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-08 18:20:23,454 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 18:20:23,454 INFO L82 PathProgramCache]: Analyzing trace with hash -786549237, now seen corresponding path program 5 times [2018-12-08 18:20:23,455 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-08 18:20:23,455 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 18:20:23,455 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 18:20:23,455 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 18:20:23,455 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-08 18:20:23,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 18:20:24,999 INFO L134 CoverageAnalysis]: Checked inductivity of 236 backedges. 0 proven. 166 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2018-12-08 18:20:24,999 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-08 18:20:24,999 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-08 18:20:24,999 INFO L187 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-12-08 18:20:24,999 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-12-08 18:20:24,999 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-08 18:20:25,000 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c03cdd4b-ef7b-4020-b304-3ea86d1e95f0/bin-2019/utaipan/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-08 18:20:25,006 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-12-08 18:20:25,007 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2018-12-08 18:21:01,268 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-12-08 18:21:01,268 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-08 18:21:01,281 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 18:21:01,301 INFO L478 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 139 treesize of output 123 [2018-12-08 18:21:01,333 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:01,347 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 120 treesize of output 121 [2018-12-08 18:21:01,461 WARN L180 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 62 [2018-12-08 18:21:01,464 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:01,465 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:01,466 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 106 treesize of output 107 [2018-12-08 18:21:01,524 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:01,525 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:01,526 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:01,528 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:01,529 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:01,530 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 81 treesize of output 102 [2018-12-08 18:21:01,596 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:01,598 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:01,600 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:01,601 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:01,602 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:01,605 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:01,605 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 11 disjoint index pairs (out of 10 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 106 [2018-12-08 18:21:01,672 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:01,674 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:01,675 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:01,676 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:01,677 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:01,679 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:01,680 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:01,681 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:01,682 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 16 disjoint index pairs (out of 15 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 117 [2018-12-08 18:21:01,750 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:01,751 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:01,752 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:01,753 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:01,753 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:01,754 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:01,755 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:01,755 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:01,756 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:01,757 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:01,758 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 22 disjoint index pairs (out of 21 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 137 [2018-12-08 18:21:01,761 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 22 disjoint index pairs (out of 21 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 129 [2018-12-08 18:21:01,762 INFO L267 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2018-12-08 18:21:01,793 INFO L267 ElimStorePlain]: Start of recursive call 8: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-08 18:21:01,827 INFO L267 ElimStorePlain]: Start of recursive call 7: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-08 18:21:01,858 INFO L267 ElimStorePlain]: Start of recursive call 6: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-08 18:21:01,891 INFO L267 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-08 18:21:01,924 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-08 18:21:01,991 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:01,997 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:02,000 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:02,016 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 108 treesize of output 117 [2018-12-08 18:21:02,196 WARN L180 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 64 [2018-12-08 18:21:02,200 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:02,202 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:02,204 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:02,206 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:02,208 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:02,209 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 92 treesize of output 108 [2018-12-08 18:21:02,276 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:02,278 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:02,279 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:02,281 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:02,282 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:02,283 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:02,285 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:02,285 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 11 disjoint index pairs (out of 10 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 106 [2018-12-08 18:21:02,363 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:02,365 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:02,366 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:02,367 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:02,369 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:02,370 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:02,371 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:02,372 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:02,372 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 16 disjoint index pairs (out of 15 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 119 [2018-12-08 18:21:02,441 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:02,442 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:02,444 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:02,445 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:02,446 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:02,447 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:02,449 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:02,453 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:02,454 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:02,455 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:02,456 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 22 disjoint index pairs (out of 21 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 137 [2018-12-08 18:21:02,460 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 22 disjoint index pairs (out of 21 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 129 [2018-12-08 18:21:02,460 INFO L267 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2018-12-08 18:21:02,494 INFO L267 ElimStorePlain]: Start of recursive call 14: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-08 18:21:02,523 INFO L267 ElimStorePlain]: Start of recursive call 13: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-08 18:21:02,555 INFO L267 ElimStorePlain]: Start of recursive call 12: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-08 18:21:02,589 INFO L267 ElimStorePlain]: Start of recursive call 11: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-08 18:21:02,653 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:02,655 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:02,659 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:02,661 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:02,664 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:02,666 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:02,671 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:02,686 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 90 treesize of output 116 [2018-12-08 18:21:02,903 WARN L180 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 64 [2018-12-08 18:21:02,907 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:02,909 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:02,910 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:02,914 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:02,916 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:02,918 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:02,919 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:02,920 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:02,924 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:02,928 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:02,940 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 14 disjoint index pairs (out of 15 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 87 treesize of output 124 [2018-12-08 18:21:03,157 WARN L180 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 72 [2018-12-08 18:21:03,161 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:03,163 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:03,164 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:03,166 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:03,167 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:03,169 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:03,170 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:03,171 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:03,172 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:03,173 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 16 disjoint index pairs (out of 15 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 127 [2018-12-08 18:21:03,249 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:03,250 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:03,251 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:03,252 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:03,253 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:03,254 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:03,846 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:03,847 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:03,847 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:03,848 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:03,849 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:03,850 INFO L303 Elim1Store]: Index analysis took 602 ms [2018-12-08 18:21:03,850 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 22 disjoint index pairs (out of 21 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 137 [2018-12-08 18:21:03,856 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 22 disjoint index pairs (out of 21 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 129 [2018-12-08 18:21:03,856 INFO L267 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2018-12-08 18:21:03,896 INFO L267 ElimStorePlain]: Start of recursive call 19: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-08 18:21:03,931 INFO L267 ElimStorePlain]: Start of recursive call 18: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-08 18:21:04,000 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:04,001 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:04,002 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:04,003 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:04,004 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:04,006 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:04,007 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:04,008 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:04,009 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:04,010 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:04,013 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:04,015 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:04,018 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:04,027 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 20 disjoint index pairs (out of 21 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 83 treesize of output 139 [2018-12-08 18:21:04,237 WARN L180 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 76 [2018-12-08 18:21:04,241 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:04,242 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:04,243 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:04,243 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:04,244 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:04,245 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:04,246 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:04,247 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:04,247 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:04,248 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:04,249 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:04,250 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 22 disjoint index pairs (out of 21 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 92 treesize of output 141 [2018-12-08 18:21:04,253 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 22 disjoint index pairs (out of 21 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 129 [2018-12-08 18:21:04,254 INFO L267 ElimStorePlain]: Start of recursive call 23: End of recursive call: and 1 xjuncts. [2018-12-08 18:21:04,294 INFO L267 ElimStorePlain]: Start of recursive call 22: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-08 18:21:04,368 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:04,370 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:04,370 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:04,371 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:04,372 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:04,373 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:04,374 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:04,375 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:04,376 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:04,378 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:04,378 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:04,379 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:04,380 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:04,381 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:04,382 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:04,384 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:04,393 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 8 select indices, 8 select index equivalence classes, 27 disjoint index pairs (out of 28 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 90 treesize of output 163 [2018-12-08 18:21:04,397 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 22 disjoint index pairs (out of 21 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 157 treesize of output 149 [2018-12-08 18:21:04,397 INFO L267 ElimStorePlain]: Start of recursive call 25: End of recursive call: and 1 xjuncts. [2018-12-08 18:21:04,527 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:04,528 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:04,529 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:04,530 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:04,530 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:04,531 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:04,532 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:04,532 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:04,534 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:04,534 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:04,535 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:04,535 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:04,537 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:04,542 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 103 treesize of output 159 [2018-12-08 18:21:04,543 INFO L267 ElimStorePlain]: Start of recursive call 26: End of recursive call: and 2 xjuncts. [2018-12-08 18:21:04,702 INFO L267 ElimStorePlain]: Start of recursive call 24: 2 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-12-08 18:21:04,864 INFO L267 ElimStorePlain]: Start of recursive call 21: 2 dim-1 vars, End of recursive call: and 4 xjuncts. [2018-12-08 18:21:05,061 INFO L267 ElimStorePlain]: Start of recursive call 17: 2 dim-1 vars, End of recursive call: and 5 xjuncts. [2018-12-08 18:21:05,370 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:05,372 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:05,374 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:05,376 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:05,378 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:05,379 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:05,381 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:05,382 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 11 disjoint index pairs (out of 10 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 81 treesize of output 106 [2018-12-08 18:21:05,451 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:05,452 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:05,454 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:05,455 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:05,456 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:05,457 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:05,458 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:05,460 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:05,461 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:05,461 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 16 disjoint index pairs (out of 15 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 119 [2018-12-08 18:21:05,528 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:05,529 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:05,530 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:05,531 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:05,531 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:05,532 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:05,533 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:05,534 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:05,535 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:05,535 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:05,536 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 22 disjoint index pairs (out of 21 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 137 [2018-12-08 18:21:05,539 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 22 disjoint index pairs (out of 21 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 129 [2018-12-08 18:21:05,540 INFO L267 ElimStorePlain]: Start of recursive call 30: End of recursive call: and 1 xjuncts. [2018-12-08 18:21:05,573 INFO L267 ElimStorePlain]: Start of recursive call 29: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-08 18:21:05,606 INFO L267 ElimStorePlain]: Start of recursive call 28: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-08 18:21:05,641 INFO L267 ElimStorePlain]: Start of recursive call 27: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-08 18:21:05,879 INFO L267 ElimStorePlain]: Start of recursive call 16: 2 dim-1 vars, End of recursive call: and 6 xjuncts. [2018-12-08 18:21:06,148 INFO L267 ElimStorePlain]: Start of recursive call 10: 2 dim-1 vars, End of recursive call: and 7 xjuncts. [2018-12-08 18:21:06,455 INFO L267 ElimStorePlain]: Start of recursive call 3: 2 dim-1 vars, End of recursive call: and 8 xjuncts. [2018-12-08 18:21:06,930 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 8 xjuncts. [2018-12-08 18:21:07,558 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: 14 dim-0 vars, and 8 xjuncts. [2018-12-08 18:21:07,559 INFO L202 ElimStorePlain]: Needed 30 recursive calls to eliminate 3 variables, input treesize:142, output treesize:1005 [2018-12-08 18:21:08,046 WARN L180 SmtUtils]: Spent 448.00 ms on a formula simplification. DAG size of input: 276 DAG size of output: 258 [2018-12-08 18:21:10,581 WARN L180 SmtUtils]: Spent 2.48 s on a formula simplification that was a NOOP. DAG size: 419 [2018-12-08 18:21:10,589 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:10,592 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:10,595 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:10,598 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:10,601 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:10,604 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:10,606 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:10,609 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:10,611 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:10,614 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:10,617 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:10,619 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:10,622 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:10,624 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:10,627 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:10,628 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 9 select indices, 9 select index equivalence classes, 37 disjoint index pairs (out of 36 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 169 treesize of output 249 [2018-12-08 18:21:10,634 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 9 select indices, 9 select index equivalence classes, 37 disjoint index pairs (out of 36 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 216 [2018-12-08 18:21:10,890 WARN L180 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 114 [2018-12-08 18:21:10,896 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:10,900 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:10,904 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:10,906 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:10,907 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:10,909 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:10,910 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:10,911 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:10,913 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:10,927 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:10,928 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 10 select indices, 10 select index equivalence classes, 47 disjoint index pairs (out of 45 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 252 [2018-12-08 18:21:10,943 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 11 select indices, 11 select index equivalence classes, 47 disjoint index pairs (out of 55 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 247 [2018-12-08 18:21:10,944 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-12-08 18:21:11,029 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-08 18:21:11,109 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-08 18:21:11,220 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-08 18:21:12,439 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:12,443 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:12,446 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:12,448 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:12,451 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:12,454 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:12,457 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:12,460 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:12,462 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:12,465 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:12,467 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:12,469 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:12,472 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:12,474 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:12,477 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:12,478 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 9 select indices, 9 select index equivalence classes, 37 disjoint index pairs (out of 36 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 169 treesize of output 229 [2018-12-08 18:21:12,483 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 9 select indices, 9 select index equivalence classes, 37 disjoint index pairs (out of 36 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 216 [2018-12-08 18:21:12,749 WARN L180 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 114 [2018-12-08 18:21:12,755 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:12,758 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:12,760 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:12,761 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:12,763 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:12,764 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:12,766 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:12,768 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:12,769 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:12,780 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:12,780 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 10 select indices, 10 select index equivalence classes, 47 disjoint index pairs (out of 45 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 252 [2018-12-08 18:21:12,791 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 11 select indices, 11 select index equivalence classes, 47 disjoint index pairs (out of 55 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 247 [2018-12-08 18:21:12,792 INFO L267 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2018-12-08 18:21:12,900 INFO L267 ElimStorePlain]: Start of recursive call 8: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-08 18:21:13,015 INFO L267 ElimStorePlain]: Start of recursive call 7: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-08 18:21:13,153 INFO L267 ElimStorePlain]: Start of recursive call 6: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-08 18:21:14,464 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:14,467 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:14,471 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:14,474 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:14,476 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:14,479 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:14,482 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:14,486 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:14,489 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:14,491 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:14,493 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:14,495 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:14,498 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:14,501 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:14,503 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:14,504 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 9 select indices, 9 select index equivalence classes, 37 disjoint index pairs (out of 36 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 169 treesize of output 253 [2018-12-08 18:21:14,509 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 9 select indices, 9 select index equivalence classes, 37 disjoint index pairs (out of 36 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 216 [2018-12-08 18:21:14,751 WARN L180 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 114 [2018-12-08 18:21:14,756 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:14,758 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:14,760 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:14,763 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:14,765 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:14,767 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:14,768 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:14,769 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:14,771 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:14,777 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:14,777 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 10 select indices, 10 select index equivalence classes, 47 disjoint index pairs (out of 45 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 252 [2018-12-08 18:21:14,790 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 11 select indices, 11 select index equivalence classes, 47 disjoint index pairs (out of 55 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 247 [2018-12-08 18:21:14,791 INFO L267 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2018-12-08 18:21:14,882 INFO L267 ElimStorePlain]: Start of recursive call 12: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-08 18:21:14,964 INFO L267 ElimStorePlain]: Start of recursive call 11: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-08 18:21:15,075 INFO L267 ElimStorePlain]: Start of recursive call 10: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-08 18:21:16,406 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:16,409 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:16,412 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:16,414 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:16,419 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:16,422 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:16,426 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:16,429 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:16,433 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:16,436 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:16,440 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:16,443 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:16,447 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:16,451 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:16,454 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:16,455 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 9 select indices, 9 select index equivalence classes, 37 disjoint index pairs (out of 36 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 169 treesize of output 253 [2018-12-08 18:21:16,462 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 9 select indices, 9 select index equivalence classes, 37 disjoint index pairs (out of 36 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 216 [2018-12-08 18:21:16,848 WARN L180 SmtUtils]: Spent 385.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 114 [2018-12-08 18:21:16,859 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:16,864 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:16,869 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:16,875 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:16,881 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:16,887 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:16,890 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:16,892 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:16,895 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:16,912 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:16,914 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 10 select indices, 10 select index equivalence classes, 47 disjoint index pairs (out of 45 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 252 [2018-12-08 18:21:16,938 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 11 select indices, 11 select index equivalence classes, 47 disjoint index pairs (out of 55 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 247 [2018-12-08 18:21:16,939 INFO L267 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2018-12-08 18:21:17,046 INFO L267 ElimStorePlain]: Start of recursive call 16: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-08 18:21:17,143 INFO L267 ElimStorePlain]: Start of recursive call 15: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-08 18:21:17,281 INFO L267 ElimStorePlain]: Start of recursive call 14: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-08 18:21:18,724 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:18,726 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:18,726 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:18,727 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:18,728 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:18,728 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:18,729 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:18,730 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:18,731 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:18,731 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:18,732 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:18,733 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:18,733 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:18,734 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:18,734 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:18,735 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 9 select indices, 9 select index equivalence classes, 37 disjoint index pairs (out of 36 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 166 treesize of output 244 [2018-12-08 18:21:18,741 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 9 select indices, 9 select index equivalence classes, 37 disjoint index pairs (out of 36 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 77 treesize of output 213 [2018-12-08 18:21:18,888 WARN L180 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 112 [2018-12-08 18:21:18,892 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:18,893 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:18,894 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:18,896 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:18,897 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:18,898 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:18,898 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:18,899 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:18,900 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:18,903 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:18,904 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 10 select indices, 10 select index equivalence classes, 47 disjoint index pairs (out of 45 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 252 [2018-12-08 18:21:18,915 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 11 select indices, 11 select index equivalence classes, 47 disjoint index pairs (out of 55 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 240 [2018-12-08 18:21:18,916 INFO L267 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2018-12-08 18:21:18,995 INFO L267 ElimStorePlain]: Start of recursive call 20: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-08 18:21:19,071 INFO L267 ElimStorePlain]: Start of recursive call 19: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-08 18:21:19,182 INFO L267 ElimStorePlain]: Start of recursive call 18: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-08 18:21:20,451 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:20,454 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:20,456 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:20,458 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:20,460 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:20,463 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:20,466 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:20,469 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:20,472 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:20,475 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:20,478 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:20,481 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:20,483 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:20,486 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:20,489 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:20,497 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:20,500 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:20,503 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:20,506 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:20,508 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:20,510 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:20,523 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:20,542 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 10 select indices, 10 select index equivalence classes, 44 disjoint index pairs (out of 45 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 171 treesize of output 289 [2018-12-08 18:21:20,548 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 9 select indices, 9 select index equivalence classes, 37 disjoint index pairs (out of 36 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 283 treesize of output 275 [2018-12-08 18:21:20,826 WARN L180 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 116 [2018-12-08 18:21:20,831 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:20,834 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:20,837 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:20,839 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:20,840 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:20,841 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:20,842 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:20,843 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:20,844 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:20,852 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:20,853 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 10 select indices, 10 select index equivalence classes, 47 disjoint index pairs (out of 45 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 252 [2018-12-08 18:21:20,865 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 11 select indices, 11 select index equivalence classes, 47 disjoint index pairs (out of 55 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 247 [2018-12-08 18:21:20,866 INFO L267 ElimStorePlain]: Start of recursive call 25: End of recursive call: and 1 xjuncts. [2018-12-08 18:21:20,948 INFO L267 ElimStorePlain]: Start of recursive call 24: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-08 18:21:21,049 INFO L267 ElimStorePlain]: Start of recursive call 23: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-08 18:21:21,330 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:21,332 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:21,334 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:21,336 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:21,338 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:21,340 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:21,342 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:21,344 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:21,346 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:21,348 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:21,350 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:21,352 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:21,357 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:21,359 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:21,360 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:21,362 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:21,368 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:21,383 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 10 select indices, 10 select index equivalence classes, 45 disjoint index pairs (out of 45 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 189 treesize of output 281 [2018-12-08 18:21:22,127 WARN L180 SmtUtils]: Spent 741.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 150 [2018-12-08 18:21:22,131 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:22,132 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:22,135 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:22,136 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:22,138 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:22,139 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:22,141 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:22,143 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:22,144 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:22,145 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:22,146 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:22,147 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:22,149 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:22,151 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:22,154 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:22,156 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:22,158 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:22,160 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:22,164 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:22,171 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 11 select indices, 11 select index equivalence classes, 56 disjoint index pairs (out of 55 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 216 treesize of output 324 [2018-12-08 18:21:22,194 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 12 select indices, 12 select index equivalence classes, 57 disjoint index pairs (out of 66 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 320 treesize of output 316 [2018-12-08 18:21:22,195 INFO L267 ElimStorePlain]: Start of recursive call 28: End of recursive call: and 2 xjuncts. [2018-12-08 18:21:22,752 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:22,752 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:22,753 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:22,754 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:22,755 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:22,755 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:22,756 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:22,756 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:22,757 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:22,761 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:22,762 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:22,762 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 11 select indices, 11 select index equivalence classes, 56 disjoint index pairs (out of 55 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 248 treesize of output 348 [2018-12-08 18:21:22,763 INFO L267 ElimStorePlain]: Start of recursive call 29: End of recursive call: and 1 xjuncts. [2018-12-08 18:21:23,232 INFO L267 ElimStorePlain]: Start of recursive call 27: 2 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-12-08 18:21:23,804 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:23,806 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:23,809 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:23,811 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:23,811 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:23,812 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:23,813 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:23,814 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:23,814 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:23,819 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:23,820 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 10 select indices, 10 select index equivalence classes, 47 disjoint index pairs (out of 45 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 214 treesize of output 294 [2018-12-08 18:21:23,835 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 11 select indices, 11 select index equivalence classes, 47 disjoint index pairs (out of 55 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 247 [2018-12-08 18:21:23,836 INFO L267 ElimStorePlain]: Start of recursive call 31: End of recursive call: and 1 xjuncts. [2018-12-08 18:21:23,967 INFO L267 ElimStorePlain]: Start of recursive call 30: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-08 18:21:24,501 INFO L267 ElimStorePlain]: Start of recursive call 26: 2 dim-1 vars, End of recursive call: and 4 xjuncts. [2018-12-08 18:21:25,150 INFO L267 ElimStorePlain]: Start of recursive call 22: 2 dim-1 vars, End of recursive call: and 5 xjuncts. [2018-12-08 18:21:27,152 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:27,154 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:27,155 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:27,156 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:27,156 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:27,157 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:27,159 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:27,159 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:27,160 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:27,161 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:27,162 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:27,163 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:27,164 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:27,165 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:27,165 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:27,166 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 9 select indices, 9 select index equivalence classes, 37 disjoint index pairs (out of 36 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 169 treesize of output 251 [2018-12-08 18:21:27,174 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 9 select indices, 9 select index equivalence classes, 37 disjoint index pairs (out of 36 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 77 treesize of output 216 [2018-12-08 18:21:27,389 WARN L180 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 114 [2018-12-08 18:21:27,394 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:27,396 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:27,398 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:27,399 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:27,400 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:27,401 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:27,402 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:27,403 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:27,404 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:27,409 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:21:27,410 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 10 select indices, 10 select index equivalence classes, 47 disjoint index pairs (out of 45 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 252 [2018-12-08 18:21:27,426 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 11 select indices, 11 select index equivalence classes, 47 disjoint index pairs (out of 55 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 247 [2018-12-08 18:21:27,426 INFO L267 ElimStorePlain]: Start of recursive call 35: End of recursive call: and 1 xjuncts. [2018-12-08 18:21:27,537 INFO L267 ElimStorePlain]: Start of recursive call 34: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-08 18:21:27,643 INFO L267 ElimStorePlain]: Start of recursive call 33: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-08 18:21:27,796 INFO L267 ElimStorePlain]: Start of recursive call 32: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-08 18:21:29,783 INFO L267 ElimStorePlain]: Start of recursive call 1: 27 dim-0 vars, 7 dim-1 vars, End of recursive call: 41 dim-0 vars, and 11 xjuncts. [2018-12-08 18:21:29,784 INFO L202 ElimStorePlain]: Needed 35 recursive calls to eliminate 34 variables, input treesize:1176, output treesize:2728 [2018-12-08 18:21:35,408 WARN L180 SmtUtils]: Spent 5.54 s on a formula simplification. DAG size of input: 867 DAG size of output: 659 [2018-12-08 18:21:52,083 WARN L194 Executor]: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000) stderr output: (error "out of memory") [2018-12-08 18:21:52,284 WARN L521 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-08 18:21:52,285 FATAL L265 ToolchainWalker]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. stderr output: (error "out of memory") at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:208) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseCheckSatResult(Executor.java:225) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.checkSat(Scriptor.java:155) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.WrapperScript.checkSat(WrapperScript.java:116) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.WrapperScript.checkSat(WrapperScript.java:116) at de.uni_freiburg.informatik.ultimate.logic.Util.checkSat(Util.java:61) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA.getRedundancy(SimplifyDDA.java:626) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.SimplifyDDAWithTimeout.getRedundancy(SimplifyDDAWithTimeout.java:122) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA$Simplifier.walk(SimplifyDDA.java:371) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:122) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:113) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA.simplifyOnce(SimplifyDDA.java:650) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.SimplifyDDAWithTimeout.getSimplifiedTerm(SimplifyDDAWithTimeout.java:187) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.SmtUtils.simplify(SmtUtils.java:151) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:354) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:299) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp$UnifyPostprocessor.postprocess(TraceCheckSpWp.java:575) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:439) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer.computeStrongestPostconditionSequence(IterativePredicateTransformer.java:200) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:286) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:162) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructForwardBackward(TraceCheckConstructor.java:224) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructTraceCheck(TraceCheckConstructor.java:188) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.get(TraceCheckConstructor.java:165) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseTaipanRefinementStrategy.getTraceCheck(BaseTaipanRefinementStrategy.java:214) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.checkFeasibility(BaseRefinementStrategy.java:223) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.executeStrategy(BaseRefinementStrategy.java:197) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:70) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:456) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:434) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:376) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:334) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:174) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:126) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1427) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:630) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:419) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:205) ... 45 more [2018-12-08 18:21:52,291 INFO L168 Benchmark]: Toolchain (without parser) took 155669.67 ms. Allocated memory was 1.0 GB in the beginning and 5.6 GB in the end (delta: 4.6 GB). Free memory was 957.1 MB in the beginning and 4.8 GB in the end (delta: -3.8 GB). Peak memory consumption was 783.8 MB. Max. memory is 11.5 GB. [2018-12-08 18:21:52,291 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 982.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-08 18:21:52,292 INFO L168 Benchmark]: CACSL2BoogieTranslator took 413.20 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 162.5 MB). Free memory was 957.1 MB in the beginning and 1.1 GB in the end (delta: -174.6 MB). Peak memory consumption was 32.0 MB. Max. memory is 11.5 GB. [2018-12-08 18:21:52,292 INFO L168 Benchmark]: Boogie Procedure Inliner took 25.19 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-08 18:21:52,292 INFO L168 Benchmark]: Boogie Preprocessor took 44.95 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 7.0 MB). Peak memory consumption was 7.0 MB. Max. memory is 11.5 GB. [2018-12-08 18:21:52,293 INFO L168 Benchmark]: RCFGBuilder took 3181.83 ms. Allocated memory was 1.2 GB in the beginning and 1.4 GB in the end (delta: 173.0 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -113.5 MB). Peak memory consumption was 381.3 MB. Max. memory is 11.5 GB. [2018-12-08 18:21:52,293 INFO L168 Benchmark]: TraceAbstraction took 152001.84 ms. Allocated memory was 1.4 GB in the beginning and 5.6 GB in the end (delta: 4.3 GB). Free memory was 1.2 GB in the beginning and 4.8 GB in the end (delta: -3.5 GB). Peak memory consumption was 729.3 MB. Max. memory is 11.5 GB. [2018-12-08 18:21:52,295 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 982.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 413.20 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 162.5 MB). Free memory was 957.1 MB in the beginning and 1.1 GB in the end (delta: -174.6 MB). Peak memory consumption was 32.0 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 25.19 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 44.95 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 7.0 MB). Peak memory consumption was 7.0 MB. Max. memory is 11.5 GB. * RCFGBuilder took 3181.83 ms. Allocated memory was 1.2 GB in the beginning and 1.4 GB in the end (delta: 173.0 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -113.5 MB). Peak memory consumption was 381.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 152001.84 ms. Allocated memory was 1.4 GB in the beginning and 5.6 GB in the end (delta: 4.3 GB). Free memory was 1.2 GB in the beginning and 4.8 GB in the end (delta: -3.5 GB). Peak memory consumption was 729.3 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. stderr output: (error "out of memory") de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. stderr output: (error "out of memory") : de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:208) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.23-635dfa2 [2018-12-08 18:21:53,538 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-08 18:21:53,539 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-08 18:21:53,547 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-08 18:21:53,547 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-08 18:21:53,548 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-08 18:21:53,548 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-08 18:21:53,550 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-08 18:21:53,551 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-08 18:21:53,551 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-08 18:21:53,552 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-08 18:21:53,552 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-08 18:21:53,553 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-08 18:21:53,554 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-08 18:21:53,554 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-08 18:21:53,555 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-08 18:21:53,555 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-08 18:21:53,557 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-08 18:21:53,558 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-08 18:21:53,559 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-08 18:21:53,560 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-08 18:21:53,561 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-08 18:21:53,562 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-08 18:21:53,562 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-08 18:21:53,563 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-08 18:21:53,563 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-08 18:21:53,564 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-08 18:21:53,564 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-08 18:21:53,565 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-08 18:21:53,566 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-08 18:21:53,566 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-08 18:21:53,566 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-08 18:21:53,567 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-08 18:21:53,567 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-08 18:21:53,567 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-08 18:21:53,568 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-08 18:21:53,568 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_c03cdd4b-ef7b-4020-b304-3ea86d1e95f0/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2018-12-08 18:21:53,578 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-08 18:21:53,578 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-08 18:21:53,578 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-08 18:21:53,578 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-08 18:21:53,579 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-08 18:21:53,579 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-08 18:21:53,579 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-08 18:21:53,579 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-08 18:21:53,579 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-12-08 18:21:53,579 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-08 18:21:53,580 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-08 18:21:53,580 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-08 18:21:53,580 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-08 18:21:53,580 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-08 18:21:53,580 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-08 18:21:53,580 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-08 18:21:53,580 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-08 18:21:53,580 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-12-08 18:21:53,581 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-12-08 18:21:53,581 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-08 18:21:53,581 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-08 18:21:53,581 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-08 18:21:53,581 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-08 18:21:53,581 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-08 18:21:53,581 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-08 18:21:53,581 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-08 18:21:53,582 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-08 18:21:53,582 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-08 18:21:53,582 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-08 18:21:53,582 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-08 18:21:53,582 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-08 18:21:53,582 INFO L133 SettingsManager]: * Trace refinement strategy=WALRUS [2018-12-08 18:21:53,582 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-08 18:21:53,582 INFO L133 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2018-12-08 18:21:53,582 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-12-08 18:21:53,582 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true 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-vcloud-master/worker/working_dir_c03cdd4b-ef7b-4020-b304-3ea86d1e95f0/bin-2019/utaipan 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(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 814ad0e6afd77f926a64080aad9867e43891a945 [2018-12-08 18:21:53,605 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-08 18:21:53,612 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-08 18:21:53,614 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-08 18:21:53,615 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-08 18:21:53,615 INFO L276 PluginConnector]: CDTParser initialized [2018-12-08 18:21:53,615 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_c03cdd4b-ef7b-4020-b304-3ea86d1e95f0/bin-2019/utaipan/../../sv-benchmarks/c/seq-pthread/cs_fib_longer_true-unreach-call.i [2018-12-08 18:21:53,649 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_c03cdd4b-ef7b-4020-b304-3ea86d1e95f0/bin-2019/utaipan/data/6e202a209/aa36384a5f5c40d589bd6ba7d69c5102/FLAGca61e19f8 [2018-12-08 18:21:54,000 INFO L307 CDTParser]: Found 1 translation units. [2018-12-08 18:21:54,000 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_c03cdd4b-ef7b-4020-b304-3ea86d1e95f0/sv-benchmarks/c/seq-pthread/cs_fib_longer_true-unreach-call.i [2018-12-08 18:21:54,009 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_c03cdd4b-ef7b-4020-b304-3ea86d1e95f0/bin-2019/utaipan/data/6e202a209/aa36384a5f5c40d589bd6ba7d69c5102/FLAGca61e19f8 [2018-12-08 18:21:54,018 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_c03cdd4b-ef7b-4020-b304-3ea86d1e95f0/bin-2019/utaipan/data/6e202a209/aa36384a5f5c40d589bd6ba7d69c5102 [2018-12-08 18:21:54,020 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-08 18:21:54,021 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-08 18:21:54,021 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-08 18:21:54,021 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-08 18:21:54,024 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-08 18:21:54,024 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.12 06:21:54" (1/1) ... [2018-12-08 18:21:54,026 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9d6b1f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 06:21:54, skipping insertion in model container [2018-12-08 18:21:54,026 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.12 06:21:54" (1/1) ... [2018-12-08 18:21:54,030 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-08 18:21:54,055 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-08 18:21:54,299 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-08 18:21:54,312 INFO L191 MainTranslator]: Completed pre-run [2018-12-08 18:21:54,433 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-08 18:21:54,481 INFO L195 MainTranslator]: Completed translation [2018-12-08 18:21:54,481 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 06:21:54 WrapperNode [2018-12-08 18:21:54,481 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-08 18:21:54,482 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-08 18:21:54,482 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-08 18:21:54,482 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-08 18:21:54,487 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 06:21:54" (1/1) ... [2018-12-08 18:21:54,503 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 06:21:54" (1/1) ... [2018-12-08 18:21:54,509 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-08 18:21:54,509 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-08 18:21:54,509 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-08 18:21:54,509 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-08 18:21:54,515 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 06:21:54" (1/1) ... [2018-12-08 18:21:54,515 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 06:21:54" (1/1) ... [2018-12-08 18:21:54,520 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 06:21:54" (1/1) ... [2018-12-08 18:21:54,520 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 06:21:54" (1/1) ... [2018-12-08 18:21:54,545 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 06:21:54" (1/1) ... [2018-12-08 18:21:54,549 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 06:21:54" (1/1) ... [2018-12-08 18:21:54,552 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 06:21:54" (1/1) ... [2018-12-08 18:21:54,556 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-08 18:21:54,557 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-08 18:21:54,557 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-08 18:21:54,557 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-08 18:21:54,558 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 06:21:54" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c03cdd4b-ef7b-4020-b304-3ea86d1e95f0/bin-2019/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-08 18:21:54,596 INFO L130 BoogieDeclarations]: Found specification of procedure main_thread [2018-12-08 18:21:54,596 INFO L138 BoogieDeclarations]: Found implementation of procedure main_thread [2018-12-08 18:21:54,596 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2018-12-08 18:21:54,597 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-08 18:21:54,597 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2018-12-08 18:21:54,597 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-12-08 18:21:54,597 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-12-08 18:21:54,597 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2018-12-08 18:21:54,597 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2018-12-08 18:21:54,597 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2018-12-08 18:21:54,597 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2018-12-08 18:21:54,597 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-08 18:21:54,597 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-08 18:21:54,598 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-08 18:21:54,598 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-08 18:21:54,598 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-12-08 18:21:54,598 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_create [2018-12-08 18:21:54,598 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_create [2018-12-08 18:21:54,598 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-12-08 18:21:54,598 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~$Pointer$ [2018-12-08 18:21:54,598 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~$Pointer$ [2018-12-08 18:21:54,598 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2018-12-08 18:21:54,598 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-08 18:21:54,599 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2018-12-08 18:21:54,599 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2018-12-08 18:21:54,599 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2018-12-08 18:21:54,599 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_cs [2018-12-08 18:21:54,599 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_cs [2018-12-08 18:21:54,599 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-08 18:21:54,599 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-08 18:21:59,290 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-08 18:21:59,291 INFO L280 CfgBuilder]: Removed 4 assue(true) statements. [2018-12-08 18:21:59,291 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 06:21:59 BoogieIcfgContainer [2018-12-08 18:21:59,291 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-08 18:21:59,291 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-08 18:21:59,291 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-08 18:21:59,293 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-08 18:21:59,293 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.12 06:21:54" (1/3) ... [2018-12-08 18:21:59,294 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d9ef0c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.12 06:21:59, skipping insertion in model container [2018-12-08 18:21:59,294 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 06:21:54" (2/3) ... [2018-12-08 18:21:59,294 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d9ef0c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.12 06:21:59, skipping insertion in model container [2018-12-08 18:21:59,294 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 06:21:59" (3/3) ... [2018-12-08 18:21:59,295 INFO L112 eAbstractionObserver]: Analyzing ICFG cs_fib_longer_true-unreach-call.i [2018-12-08 18:21:59,301 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-08 18:21:59,305 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-08 18:21:59,314 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-08 18:21:59,330 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-08 18:21:59,330 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-08 18:21:59,331 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-08 18:21:59,331 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-08 18:21:59,331 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-08 18:21:59,331 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-08 18:21:59,331 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-08 18:21:59,331 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-08 18:21:59,331 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-08 18:21:59,341 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states. [2018-12-08 18:21:59,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-12-08 18:21:59,345 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 18:21:59,346 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 18:21:59,347 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-08 18:21:59,350 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 18:21:59,350 INFO L82 PathProgramCache]: Analyzing trace with hash 649759861, now seen corresponding path program 1 times [2018-12-08 18:21:59,354 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-08 18:21:59,354 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c03cdd4b-ef7b-4020-b304-3ea86d1e95f0/bin-2019/utaipan/cvc4 Starting monitored process 2 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2018-12-08 18:21:59,434 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 18:21:59,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 18:21:59,743 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 18:21:59,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 18:21:59,764 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-08 18:21:59,769 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-08 18:21:59,770 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-12-08 18:21:59,772 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-08 18:21:59,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-08 18:21:59,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-08 18:21:59,785 INFO L87 Difference]: Start difference. First operand 108 states. Second operand 3 states. [2018-12-08 18:21:59,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 18:21:59,943 INFO L93 Difference]: Finished difference Result 212 states and 322 transitions. [2018-12-08 18:21:59,947 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-08 18:21:59,948 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2018-12-08 18:21:59,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 18:21:59,957 INFO L225 Difference]: With dead ends: 212 [2018-12-08 18:21:59,957 INFO L226 Difference]: Without dead ends: 104 [2018-12-08 18:21:59,960 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-08 18:21:59,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2018-12-08 18:21:59,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 101. [2018-12-08 18:21:59,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2018-12-08 18:22:00,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 146 transitions. [2018-12-08 18:22:00,002 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 146 transitions. Word has length 18 [2018-12-08 18:22:00,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 18:22:00,003 INFO L480 AbstractCegarLoop]: Abstraction has 101 states and 146 transitions. [2018-12-08 18:22:00,003 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-08 18:22:00,003 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 146 transitions. [2018-12-08 18:22:00,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-12-08 18:22:00,004 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 18:22:00,005 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 18:22:00,005 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-08 18:22:00,005 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 18:22:00,005 INFO L82 PathProgramCache]: Analyzing trace with hash -1255387306, now seen corresponding path program 1 times [2018-12-08 18:22:00,006 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-08 18:22:00,006 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c03cdd4b-ef7b-4020-b304-3ea86d1e95f0/bin-2019/utaipan/cvc4 Starting monitored process 3 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2018-12-08 18:22:00,028 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 18:22:00,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 18:22:00,314 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 18:22:00,319 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 18:22:00,319 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-08 18:22:00,322 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-08 18:22:00,322 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-12-08 18:22:00,323 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-08 18:22:00,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-08 18:22:00,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-08 18:22:00,324 INFO L87 Difference]: Start difference. First operand 101 states and 146 transitions. Second operand 3 states. [2018-12-08 18:22:00,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 18:22:00,398 INFO L93 Difference]: Finished difference Result 197 states and 288 transitions. [2018-12-08 18:22:00,401 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-08 18:22:00,401 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2018-12-08 18:22:00,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 18:22:00,402 INFO L225 Difference]: With dead ends: 197 [2018-12-08 18:22:00,402 INFO L226 Difference]: Without dead ends: 103 [2018-12-08 18:22:00,403 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-08 18:22:00,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2018-12-08 18:22:00,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 102. [2018-12-08 18:22:00,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2018-12-08 18:22:00,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 147 transitions. [2018-12-08 18:22:00,410 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 147 transitions. Word has length 21 [2018-12-08 18:22:00,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 18:22:00,410 INFO L480 AbstractCegarLoop]: Abstraction has 102 states and 147 transitions. [2018-12-08 18:22:00,410 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-08 18:22:00,410 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 147 transitions. [2018-12-08 18:22:00,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-12-08 18:22:00,411 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 18:22:00,411 INFO L402 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] [2018-12-08 18:22:00,411 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-08 18:22:00,411 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 18:22:00,411 INFO L82 PathProgramCache]: Analyzing trace with hash -744986184, now seen corresponding path program 1 times [2018-12-08 18:22:00,412 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-08 18:22:00,412 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c03cdd4b-ef7b-4020-b304-3ea86d1e95f0/bin-2019/utaipan/cvc4 Starting monitored process 4 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2018-12-08 18:22:00,428 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 18:22:00,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 18:22:00,671 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 18:22:00,679 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 18:22:00,679 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-08 18:22:00,714 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 18:22:00,717 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-08 18:22:00,717 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c03cdd4b-ef7b-4020-b304-3ea86d1e95f0/bin-2019/utaipan/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-08 18:22:00,725 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 18:22:00,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 18:22:00,836 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 18:22:00,859 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-12-08 18:22:00,860 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-08 18:22:00,877 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-12-08 18:22:00,877 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 7 [2018-12-08 18:22:00,878 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-12-08 18:22:00,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-12-08 18:22:00,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2018-12-08 18:22:00,878 INFO L87 Difference]: Start difference. First operand 102 states and 147 transitions. Second operand 7 states. [2018-12-08 18:22:01,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 18:22:01,126 INFO L93 Difference]: Finished difference Result 201 states and 293 transitions. [2018-12-08 18:22:01,127 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-12-08 18:22:01,127 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2018-12-08 18:22:01,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 18:22:01,128 INFO L225 Difference]: With dead ends: 201 [2018-12-08 18:22:01,128 INFO L226 Difference]: Without dead ends: 106 [2018-12-08 18:22:01,128 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 61 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2018-12-08 18:22:01,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2018-12-08 18:22:01,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2018-12-08 18:22:01,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2018-12-08 18:22:01,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 150 transitions. [2018-12-08 18:22:01,135 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 150 transitions. Word has length 23 [2018-12-08 18:22:01,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 18:22:01,135 INFO L480 AbstractCegarLoop]: Abstraction has 106 states and 150 transitions. [2018-12-08 18:22:01,135 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-12-08 18:22:01,135 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 150 transitions. [2018-12-08 18:22:01,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2018-12-08 18:22:01,136 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 18:22:01,136 INFO L402 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 18:22:01,137 INFO L423 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-08 18:22:01,137 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 18:22:01,137 INFO L82 PathProgramCache]: Analyzing trace with hash 2081995969, now seen corresponding path program 1 times [2018-12-08 18:22:01,138 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-08 18:22:01,138 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c03cdd4b-ef7b-4020-b304-3ea86d1e95f0/bin-2019/utaipan/cvc4 Starting monitored process 6 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2018-12-08 18:22:01,153 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 18:22:01,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 18:22:01,311 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 18:22:01,363 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-12-08 18:22:01,363 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-08 18:22:01,365 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-08 18:22:01,365 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-12-08 18:22:01,365 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-12-08 18:22:01,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-12-08 18:22:01,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-12-08 18:22:01,366 INFO L87 Difference]: Start difference. First operand 106 states and 150 transitions. Second operand 8 states. [2018-12-08 18:22:03,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 18:22:03,474 INFO L93 Difference]: Finished difference Result 454 states and 743 transitions. [2018-12-08 18:22:03,474 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-12-08 18:22:03,474 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 47 [2018-12-08 18:22:03,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 18:22:03,480 INFO L225 Difference]: With dead ends: 454 [2018-12-08 18:22:03,480 INFO L226 Difference]: Without dead ends: 367 [2018-12-08 18:22:03,481 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2018-12-08 18:22:03,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2018-12-08 18:22:03,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 267. [2018-12-08 18:22:03,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 267 states. [2018-12-08 18:22:03,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 430 transitions. [2018-12-08 18:22:03,524 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 430 transitions. Word has length 47 [2018-12-08 18:22:03,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 18:22:03,524 INFO L480 AbstractCegarLoop]: Abstraction has 267 states and 430 transitions. [2018-12-08 18:22:03,524 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-12-08 18:22:03,524 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 430 transitions. [2018-12-08 18:22:03,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2018-12-08 18:22:03,526 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 18:22:03,526 INFO L402 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 18:22:03,526 INFO L423 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-08 18:22:03,526 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 18:22:03,526 INFO L82 PathProgramCache]: Analyzing trace with hash 1863141251, now seen corresponding path program 1 times [2018-12-08 18:22:03,527 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-08 18:22:03,527 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c03cdd4b-ef7b-4020-b304-3ea86d1e95f0/bin-2019/utaipan/cvc4 Starting monitored process 7 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2018-12-08 18:22:03,541 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 18:22:03,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 18:22:03,693 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 18:22:03,714 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-12-08 18:22:03,714 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-08 18:22:03,716 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-08 18:22:03,716 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-12-08 18:22:03,717 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-08 18:22:03,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-08 18:22:03,717 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-12-08 18:22:03,717 INFO L87 Difference]: Start difference. First operand 267 states and 430 transitions. Second operand 5 states. [2018-12-08 18:22:04,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 18:22:04,149 INFO L93 Difference]: Finished difference Result 533 states and 852 transitions. [2018-12-08 18:22:04,149 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-08 18:22:04,149 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 47 [2018-12-08 18:22:04,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 18:22:04,151 INFO L225 Difference]: With dead ends: 533 [2018-12-08 18:22:04,151 INFO L226 Difference]: Without dead ends: 285 [2018-12-08 18:22:04,152 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-12-08 18:22:04,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2018-12-08 18:22:04,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 271. [2018-12-08 18:22:04,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 271 states. [2018-12-08 18:22:04,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 383 transitions. [2018-12-08 18:22:04,169 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 383 transitions. Word has length 47 [2018-12-08 18:22:04,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 18:22:04,170 INFO L480 AbstractCegarLoop]: Abstraction has 271 states and 383 transitions. [2018-12-08 18:22:04,170 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-08 18:22:04,170 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 383 transitions. [2018-12-08 18:22:04,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2018-12-08 18:22:04,171 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 18:22:04,171 INFO L402 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 18:22:04,171 INFO L423 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-08 18:22:04,171 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 18:22:04,172 INFO L82 PathProgramCache]: Analyzing trace with hash 1470114241, now seen corresponding path program 1 times [2018-12-08 18:22:04,172 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-08 18:22:04,172 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c03cdd4b-ef7b-4020-b304-3ea86d1e95f0/bin-2019/utaipan/cvc4 Starting monitored process 8 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2018-12-08 18:22:04,186 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 18:22:04,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 18:22:04,477 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 18:22:04,488 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-12-08 18:22:04,488 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-08 18:22:04,517 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-12-08 18:22:04,520 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-08 18:22:04,521 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c03cdd4b-ef7b-4020-b304-3ea86d1e95f0/bin-2019/utaipan/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-08 18:22:04,528 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 18:22:04,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 18:22:04,643 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 18:22:04,716 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-12-08 18:22:04,716 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-08 18:22:04,734 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-12-08 18:22:04,734 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [4, 4] total 14 [2018-12-08 18:22:04,735 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-12-08 18:22:04,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-12-08 18:22:04,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2018-12-08 18:22:04,735 INFO L87 Difference]: Start difference. First operand 271 states and 383 transitions. Second operand 14 states. [2018-12-08 18:22:09,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 18:22:09,955 INFO L93 Difference]: Finished difference Result 583 states and 815 transitions. [2018-12-08 18:22:09,956 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-12-08 18:22:09,956 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 47 [2018-12-08 18:22:09,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 18:22:09,957 INFO L225 Difference]: With dead ends: 583 [2018-12-08 18:22:09,957 INFO L226 Difference]: Without dead ends: 316 [2018-12-08 18:22:09,958 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=139, Invalid=413, Unknown=0, NotChecked=0, Total=552 [2018-12-08 18:22:09,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2018-12-08 18:22:09,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 298. [2018-12-08 18:22:09,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2018-12-08 18:22:09,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 410 transitions. [2018-12-08 18:22:09,971 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 410 transitions. Word has length 47 [2018-12-08 18:22:09,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 18:22:09,971 INFO L480 AbstractCegarLoop]: Abstraction has 298 states and 410 transitions. [2018-12-08 18:22:09,971 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-12-08 18:22:09,971 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 410 transitions. [2018-12-08 18:22:09,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2018-12-08 18:22:09,972 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 18:22:09,972 INFO L402 BasicCegarLoop]: trace histogram [12, 12, 5, 5, 5, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 18:22:09,972 INFO L423 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-08 18:22:09,973 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 18:22:09,973 INFO L82 PathProgramCache]: Analyzing trace with hash 1120246192, now seen corresponding path program 1 times [2018-12-08 18:22:09,973 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-08 18:22:09,973 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c03cdd4b-ef7b-4020-b304-3ea86d1e95f0/bin-2019/utaipan/cvc4 Starting monitored process 10 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2018-12-08 18:22:09,986 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 18:22:10,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 18:22:10,226 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 18:22:10,266 INFO L134 CoverageAnalysis]: Checked inductivity of 268 backedges. 5 proven. 10 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2018-12-08 18:22:10,267 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-08 18:22:10,410 INFO L134 CoverageAnalysis]: Checked inductivity of 268 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 258 trivial. 0 not checked. [2018-12-08 18:22:10,412 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-08 18:22:10,413 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c03cdd4b-ef7b-4020-b304-3ea86d1e95f0/bin-2019/utaipan/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-08 18:22:10,419 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 18:22:10,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 18:22:10,598 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 18:22:10,611 INFO L134 CoverageAnalysis]: Checked inductivity of 268 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 258 trivial. 0 not checked. [2018-12-08 18:22:10,611 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-08 18:22:10,752 INFO L134 CoverageAnalysis]: Checked inductivity of 268 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 258 trivial. 0 not checked. [2018-12-08 18:22:10,782 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2018-12-08 18:22:10,782 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 6, 5] total 10 [2018-12-08 18:22:10,782 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-12-08 18:22:10,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-12-08 18:22:10,782 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2018-12-08 18:22:10,783 INFO L87 Difference]: Start difference. First operand 298 states and 410 transitions. Second operand 10 states. [2018-12-08 18:22:15,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 18:22:15,409 INFO L93 Difference]: Finished difference Result 857 states and 1230 transitions. [2018-12-08 18:22:15,409 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-12-08 18:22:15,409 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 130 [2018-12-08 18:22:15,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 18:22:15,412 INFO L225 Difference]: With dead ends: 857 [2018-12-08 18:22:15,412 INFO L226 Difference]: Without dead ends: 605 [2018-12-08 18:22:15,413 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 529 GetRequests, 515 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=77, Invalid=163, Unknown=0, NotChecked=0, Total=240 [2018-12-08 18:22:15,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 605 states. [2018-12-08 18:22:15,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 605 to 557. [2018-12-08 18:22:15,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 557 states. [2018-12-08 18:22:15,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 557 states to 557 states and 766 transitions. [2018-12-08 18:22:15,445 INFO L78 Accepts]: Start accepts. Automaton has 557 states and 766 transitions. Word has length 130 [2018-12-08 18:22:15,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 18:22:15,445 INFO L480 AbstractCegarLoop]: Abstraction has 557 states and 766 transitions. [2018-12-08 18:22:15,445 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-12-08 18:22:15,445 INFO L276 IsEmpty]: Start isEmpty. Operand 557 states and 766 transitions. [2018-12-08 18:22:15,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2018-12-08 18:22:15,446 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 18:22:15,446 INFO L402 BasicCegarLoop]: trace histogram [12, 12, 5, 5, 5, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 18:22:15,446 INFO L423 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-08 18:22:15,447 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 18:22:15,447 INFO L82 PathProgramCache]: Analyzing trace with hash -178289648, now seen corresponding path program 1 times [2018-12-08 18:22:15,447 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-08 18:22:15,447 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c03cdd4b-ef7b-4020-b304-3ea86d1e95f0/bin-2019/utaipan/cvc4 Starting monitored process 12 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2018-12-08 18:22:15,461 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 18:22:15,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 18:22:15,911 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 18:22:15,951 INFO L134 CoverageAnalysis]: Checked inductivity of 268 backedges. 0 proven. 166 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2018-12-08 18:22:15,952 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-08 18:22:16,076 INFO L134 CoverageAnalysis]: Checked inductivity of 268 backedges. 0 proven. 166 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2018-12-08 18:22:16,080 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-08 18:22:16,080 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c03cdd4b-ef7b-4020-b304-3ea86d1e95f0/bin-2019/utaipan/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-08 18:22:16,086 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 18:22:16,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 18:22:16,272 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 18:22:16,282 INFO L478 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 15 [2018-12-08 18:22:16,287 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2018-12-08 18:22:16,289 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 16 [2018-12-08 18:22:16,289 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-12-08 18:22:16,294 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-08 18:22:16,298 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-08 18:22:16,304 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-08 18:22:16,304 INFO L202 ElimStorePlain]: Needed 4 recursive calls to eliminate 1 variables, input treesize:12, output treesize:16 [2018-12-08 18:22:16,332 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:22:16,333 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 22 [2018-12-08 18:22:16,333 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-12-08 18:22:16,339 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-08 18:22:16,339 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:22, output treesize:16 [2018-12-08 18:22:16,357 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:22:16,358 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 4 [2018-12-08 18:22:16,358 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-12-08 18:22:16,360 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-08 18:22:16,361 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:19, output treesize:3 [2018-12-08 18:22:16,381 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:22:16,382 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 4 [2018-12-08 18:22:16,382 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-12-08 18:22:16,383 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-08 18:22:16,383 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:16, output treesize:1 [2018-12-08 18:22:16,399 WARN L307 Elim1Store]: Array PQE input equivalent to false [2018-12-08 18:22:16,399 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-12-08 18:22:16,400 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-08 18:22:16,400 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:21, output treesize:1 [2018-12-08 18:22:16,413 INFO L134 CoverageAnalysis]: Checked inductivity of 268 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2018-12-08 18:22:16,413 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-08 18:22:16,444 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 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 12 treesize of output 3 [2018-12-08 18:22:16,444 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-12-08 18:22:16,445 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-08 18:22:16,446 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:12, output treesize:3 [2018-12-08 18:22:16,509 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 5 treesize of output 3 [2018-12-08 18:22:16,509 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-12-08 18:22:16,512 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-08 18:22:16,512 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:17, output treesize:12 [2018-12-08 18:22:16,553 INFO L134 CoverageAnalysis]: Checked inductivity of 268 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2018-12-08 18:22:16,572 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2018-12-08 18:22:16,572 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6, 5] total 18 [2018-12-08 18:22:16,573 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-12-08 18:22:16,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-12-08 18:22:16,573 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=245, Unknown=0, NotChecked=0, Total=306 [2018-12-08 18:22:16,573 INFO L87 Difference]: Start difference. First operand 557 states and 766 transitions. Second operand 18 states. [2018-12-08 18:22:23,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 18:22:23,727 INFO L93 Difference]: Finished difference Result 1142 states and 1571 transitions. [2018-12-08 18:22:23,727 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-12-08 18:22:23,727 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 130 [2018-12-08 18:22:23,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 18:22:23,730 INFO L225 Difference]: With dead ends: 1142 [2018-12-08 18:22:23,730 INFO L226 Difference]: Without dead ends: 542 [2018-12-08 18:22:23,732 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 532 GetRequests, 502 SyntacticMatches, 3 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=177, Invalid=635, Unknown=0, NotChecked=0, Total=812 [2018-12-08 18:22:23,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 542 states. [2018-12-08 18:22:23,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 542 to 510. [2018-12-08 18:22:23,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 510 states. [2018-12-08 18:22:23,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 510 states to 510 states and 691 transitions. [2018-12-08 18:22:23,764 INFO L78 Accepts]: Start accepts. Automaton has 510 states and 691 transitions. Word has length 130 [2018-12-08 18:22:23,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 18:22:23,764 INFO L480 AbstractCegarLoop]: Abstraction has 510 states and 691 transitions. [2018-12-08 18:22:23,764 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-12-08 18:22:23,764 INFO L276 IsEmpty]: Start isEmpty. Operand 510 states and 691 transitions. [2018-12-08 18:22:23,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2018-12-08 18:22:23,765 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 18:22:23,765 INFO L402 BasicCegarLoop]: trace histogram [21, 21, 7, 7, 7, 4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 18:22:23,765 INFO L423 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-08 18:22:23,766 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 18:22:23,766 INFO L82 PathProgramCache]: Analyzing trace with hash 612811314, now seen corresponding path program 1 times [2018-12-08 18:22:23,766 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-08 18:22:23,766 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c03cdd4b-ef7b-4020-b304-3ea86d1e95f0/bin-2019/utaipan/cvc4 Starting monitored process 14 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2018-12-08 18:22:23,780 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 18:28:25,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 18:28:25,896 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 18:28:25,903 INFO L478 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 25 [2018-12-08 18:28:25,926 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:28:25,945 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 22 treesize of output 38 [2018-12-08 18:28:26,013 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:28:26,013 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:28:26,016 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:28:26,017 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 17 [2018-12-08 18:28:26,017 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-12-08 18:28:26,047 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:28:26,048 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:28:26,048 INFO L683 Elim1Store]: detected equality via solver [2018-12-08 18:28:26,049 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2018-12-08 18:28:26,050 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-12-08 18:28:26,065 INFO L267 ElimStorePlain]: Start of recursive call 3: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-08 18:28:26,074 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-08 18:28:26,089 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-08 18:28:26,089 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 1 variables, input treesize:35, output treesize:22 [2018-12-08 18:28:26,293 INFO L478 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 188 treesize of output 105 [2018-12-08 18:28:26,307 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2018-12-08 18:28:26,308 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-08 18:28:26,389 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 104 treesize of output 72 [2018-12-08 18:28:26,399 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2018-12-08 18:28:26,400 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-12-08 18:28:26,484 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 63 [2018-12-08 18:28:26,491 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 15 [2018-12-08 18:28:26,491 INFO L267 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2018-12-08 18:28:26,679 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 50 treesize of output 104 [2018-12-08 18:28:26,679 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2018-12-08 18:28:26,700 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 70 [2018-12-08 18:28:26,701 INFO L267 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2018-12-08 18:28:28,238 INFO L478 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 0 new quantified variables, introduced 2 case distinctions, treesize of input 48 treesize of output 56 [2018-12-08 18:28:28,239 INFO L267 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 2 xjuncts. [2018-12-08 18:28:28,668 INFO L478 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 0 new quantified variables, introduced 2 case distinctions, treesize of input 48 treesize of output 60 [2018-12-08 18:28:28,669 INFO L267 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 2 xjuncts. [2018-12-08 18:28:29,552 INFO L478 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 0 new quantified variables, introduced 2 case distinctions, treesize of input 48 treesize of output 56 [2018-12-08 18:28:29,553 INFO L267 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 2 xjuncts. [2018-12-08 18:28:29,680 INFO L267 ElimStorePlain]: Start of recursive call 8: 8 dim-1 vars, End of recursive call: and 4 xjuncts. [2018-12-08 18:28:29,792 INFO L267 ElimStorePlain]: Start of recursive call 6: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 4 xjuncts. [2018-12-08 18:28:29,917 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 4 xjuncts. [2018-12-08 18:28:30,032 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 4 xjuncts. [2018-12-08 18:28:30,178 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 4 xjuncts. [2018-12-08 18:28:30,178 INFO L202 ElimStorePlain]: Needed 12 recursive calls to eliminate 1 variables, input treesize:215, output treesize:283 [2018-12-08 18:28:30,493 WARN L180 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2018-12-08 18:28:31,391 WARN L180 SmtUtils]: Spent 803.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 91 [2018-12-08 18:28:31,881 WARN L180 SmtUtils]: Spent 351.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2018-12-08 18:28:32,754 WARN L180 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 46 [2018-12-08 18:28:32,875 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 5 case distinctions, treesize of input 55 treesize of output 77 [2018-12-08 18:28:32,889 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:28:32,893 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 79 [2018-12-08 18:28:32,893 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-08 18:28:33,035 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:28:33,037 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:28:33,068 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 51 treesize of output 82 [2018-12-08 18:28:33,069 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 2 xjuncts. [2018-12-08 18:28:33,178 INFO L267 ElimStorePlain]: Start of recursive call 2: 2 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-12-08 18:28:33,290 INFO L267 ElimStorePlain]: Start of recursive call 1: 7 dim-0 vars, 1 dim-2 vars, End of recursive call: 13 dim-0 vars, and 2 xjuncts. [2018-12-08 18:28:33,290 INFO L202 ElimStorePlain]: Needed 4 recursive calls to eliminate 8 variables, input treesize:70, output treesize:131 [2018-12-08 18:28:34,216 WARN L180 SmtUtils]: Spent 677.00 ms on a formula simplification that was a NOOP. DAG size: 84 [2018-12-08 18:28:34,237 INFO L478 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 67 treesize of output 69 [2018-12-08 18:28:34,247 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:28:34,250 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 12 [2018-12-08 18:28:34,250 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-08 18:28:34,283 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 5 [2018-12-08 18:28:34,283 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-12-08 18:28:34,304 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2018-12-08 18:28:34,304 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-12-08 18:28:34,313 INFO L267 ElimStorePlain]: Start of recursive call 2: 3 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-08 18:28:34,492 INFO L478 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 3 case distinctions, treesize of input 69 treesize of output 89 [2018-12-08 18:28:34,508 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:28:34,511 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 61 [2018-12-08 18:28:34,511 INFO L267 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2018-12-08 18:28:35,168 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 58 [2018-12-08 18:28:35,168 INFO L267 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2018-12-08 18:28:35,739 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:28:35,740 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 33 [2018-12-08 18:28:35,740 INFO L267 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2018-12-08 18:28:36,282 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:28:36,286 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:28:36,287 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:28:36,289 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:28:36,303 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:28:36,311 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 57 treesize of output 79 [2018-12-08 18:28:36,311 INFO L267 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 2 xjuncts. [2018-12-08 18:28:36,975 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 57 [2018-12-08 18:28:36,976 INFO L267 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2018-12-08 18:28:37,520 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:28:37,526 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:28:37,528 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:28:37,564 INFO L478 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 0 new quantified variables, introduced 2 case distinctions, treesize of input 61 treesize of output 85 [2018-12-08 18:28:37,564 INFO L267 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 4 xjuncts. [2018-12-08 18:28:38,311 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:28:38,315 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 49 [2018-12-08 18:28:38,315 INFO L267 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2018-12-08 18:28:38,941 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 59 [2018-12-08 18:28:38,941 INFO L267 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2018-12-08 18:28:39,555 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:28:39,559 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:28:39,579 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 59 treesize of output 67 [2018-12-08 18:28:39,580 INFO L267 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 2 xjuncts. [2018-12-08 18:28:40,274 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 33 [2018-12-08 18:28:40,275 INFO L267 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2018-12-08 18:28:40,278 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 31 [2018-12-08 18:28:40,278 INFO L267 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2018-12-08 18:28:40,799 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 38 [2018-12-08 18:28:40,799 INFO L267 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2018-12-08 18:28:40,802 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 32 [2018-12-08 18:28:40,802 INFO L267 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2018-12-08 18:28:40,805 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 34 [2018-12-08 18:28:40,806 INFO L267 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2018-12-08 18:28:40,808 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 36 [2018-12-08 18:28:40,809 INFO L267 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2018-12-08 18:28:41,275 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 30 [2018-12-08 18:28:41,275 INFO L267 ElimStorePlain]: Start of recursive call 22: End of recursive call: and 1 xjuncts. [2018-12-08 18:28:41,718 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 59 [2018-12-08 18:28:41,718 INFO L267 ElimStorePlain]: Start of recursive call 23: End of recursive call: and 1 xjuncts. [2018-12-08 18:28:42,162 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:28:42,165 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 51 [2018-12-08 18:28:42,165 INFO L267 ElimStorePlain]: Start of recursive call 24: End of recursive call: and 1 xjuncts. [2018-12-08 18:28:42,555 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:28:42,556 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 32 [2018-12-08 18:28:42,556 INFO L267 ElimStorePlain]: Start of recursive call 25: End of recursive call: and 1 xjuncts. [2018-12-08 18:28:43,150 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 42 [2018-12-08 18:28:43,150 INFO L267 ElimStorePlain]: Start of recursive call 26: End of recursive call: and 1 xjuncts. [2018-12-08 18:28:43,403 INFO L701 Elim1Store]: detected not equals via solver [2018-12-08 18:28:43,406 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 34 [2018-12-08 18:28:43,406 INFO L267 ElimStorePlain]: Start of recursive call 27: End of recursive call: and 1 xjuncts. [2018-12-08 18:28:43,505 INFO L267 ElimStorePlain]: Start of recursive call 6: 19 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-12-08 18:28:43,560 INFO L267 ElimStorePlain]: Start of recursive call 1: 15 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-08 18:28:43,560 INFO L202 ElimStorePlain]: Needed 27 recursive calls to eliminate 17 variables, input treesize:137, output treesize:5 [2018-12-08 18:28:43,728 INFO L134 CoverageAnalysis]: Checked inductivity of 671 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 648 trivial. 0 not checked. [2018-12-08 18:28:43,728 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-08 18:28:43,854 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-08 18:28:43,854 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2018-12-08 18:28:43,854 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-12-08 18:28:43,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-12-08 18:28:43,855 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2018-12-08 18:28:43,855 INFO L87 Difference]: Start difference. First operand 510 states and 691 transitions. Second operand 15 states. [2018-12-08 18:28:57,531 WARN L180 SmtUtils]: Spent 753.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 90 [2018-12-08 18:29:00,979 WARN L180 SmtUtils]: Spent 1.06 s on a formula simplification. DAG size of input: 115 DAG size of output: 115 [2018-12-08 18:29:04,843 WARN L180 SmtUtils]: Spent 1.28 s on a formula simplification. DAG size of input: 111 DAG size of output: 111 [2018-12-08 18:29:13,447 WARN L180 SmtUtils]: Spent 1.29 s on a formula simplification. DAG size of input: 113 DAG size of output: 113 [2018-12-08 18:29:17,522 WARN L180 SmtUtils]: Spent 1.40 s on a formula simplification. DAG size of input: 114 DAG size of output: 114 [2018-12-08 18:29:28,775 WARN L180 SmtUtils]: Spent 1.26 s on a formula simplification. DAG size of input: 115 DAG size of output: 115 [2018-12-08 18:29:54,817 WARN L180 SmtUtils]: Spent 1.33 s on a formula simplification. DAG size of input: 119 DAG size of output: 119 [2018-12-08 18:30:01,030 WARN L194 Executor]: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000) stderr output: (error "out of memory") [2018-12-08 18:30:01,031 FATAL L265 ToolchainWalker]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000) Connection to SMT solver broken at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:123) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.pop(Scriptor.java:139) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.arrays.DiffWrapperScript.pop(DiffWrapperScript.java:102) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.managedscript.ManagedScript.pop(ManagedScript.java:131) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.unAssertPostcondition(IncrementalHoareTripleChecker.java:651) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.clearAssertionStack(IncrementalHoareTripleChecker.java:255) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.releaseLock(IncrementalHoareTripleChecker.java:270) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.ProtectiveHoareTripleChecker.releaseLock(ProtectiveHoareTripleChecker.java:94) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.EfficientHoareTripleChecker.releaseLock(EfficientHoareTripleChecker.java:164) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.CachingHoareTripleChecker.releaseLock(CachingHoareTripleChecker.java:202) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.switchToReadonlyMode(AbstractInterpolantAutomaton.java:141) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.computeAutomataDifference(BasicCegarLoop.java:715) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.refineAbstraction(BasicCegarLoop.java:628) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:472) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:376) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:334) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:174) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:126) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) Caused by: java.io.IOException: Stream closed at java.lang.ProcessBuilder$NullOutputStream.write(ProcessBuilder.java:433) at java.io.OutputStream.write(OutputStream.java:116) at java.io.BufferedOutputStream.flushBuffer(BufferedOutputStream.java:82) at java.io.BufferedOutputStream.flush(BufferedOutputStream.java:140) at sun.nio.cs.StreamEncoder.implFlush(StreamEncoder.java:297) at sun.nio.cs.StreamEncoder.flush(StreamEncoder.java:141) at java.io.OutputStreamWriter.flush(OutputStreamWriter.java:229) at java.io.BufferedWriter.flush(BufferedWriter.java:254) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:120) ... 28 more [2018-12-08 18:30:01,033 INFO L168 Benchmark]: Toolchain (without parser) took 487012.87 ms. Allocated memory was 1.0 GB in the beginning and 1.4 GB in the end (delta: 361.2 MB). Free memory was 938.0 MB in the beginning and 812.2 MB in the end (delta: 125.8 MB). Peak memory consumption was 487.0 MB. Max. memory is 11.5 GB. [2018-12-08 18:30:01,033 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 1.0 GB. Free memory is still 972.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-08 18:30:01,033 INFO L168 Benchmark]: CACSL2BoogieTranslator took 460.08 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 155.7 MB). Free memory was 938.0 MB in the beginning and 1.1 GB in the end (delta: -183.9 MB). Peak memory consumption was 44.0 MB. Max. memory is 11.5 GB. [2018-12-08 18:30:01,034 INFO L168 Benchmark]: Boogie Procedure Inliner took 26.99 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-08 18:30:01,034 INFO L168 Benchmark]: Boogie Preprocessor took 47.80 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. [2018-12-08 18:30:01,034 INFO L168 Benchmark]: RCFGBuilder took 4734.08 ms. Allocated memory was 1.2 GB in the beginning and 1.4 GB in the end (delta: 185.6 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -77.5 MB). Peak memory consumption was 382.6 MB. Max. memory is 11.5 GB. [2018-12-08 18:30:01,034 INFO L168 Benchmark]: TraceAbstraction took 481741.23 ms. Allocated memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 19.9 MB). Free memory was 1.2 GB in the beginning and 812.2 MB in the end (delta: 380.4 MB). Peak memory consumption was 400.3 MB. Max. memory is 11.5 GB. [2018-12-08 18:30:01,035 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 1.0 GB. Free memory is still 972.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 460.08 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 155.7 MB). Free memory was 938.0 MB in the beginning and 1.1 GB in the end (delta: -183.9 MB). Peak memory consumption was 44.0 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 26.99 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 47.80 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. * RCFGBuilder took 4734.08 ms. Allocated memory was 1.2 GB in the beginning and 1.4 GB in the end (delta: 185.6 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -77.5 MB). Peak memory consumption was 382.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 481741.23 ms. Allocated memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 19.9 MB). Free memory was 1.2 GB in the beginning and 812.2 MB in the end (delta: 380.4 MB). Peak memory consumption was 400.3 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000) Connection to SMT solver broken de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000) Connection to SMT solver broken: de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:123) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...