./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/list-ext3-properties/sll_nondet_insert_false-unreach-call_false-valid-memcleanup.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5842f4b8 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_6ba770d1-28f8-4bff-ba10-b918ec46ea0c/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_6ba770d1-28f8-4bff-ba10-b918ec46ea0c/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_6ba770d1-28f8-4bff-ba10-b918ec46ea0c/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_6ba770d1-28f8-4bff-ba10-b918ec46ea0c/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/list-ext3-properties/sll_nondet_insert_false-unreach-call_false-valid-memcleanup.i -s /tmp/vcloud-vcloud-master/worker/working_dir_6ba770d1-28f8-4bff-ba10-b918ec46ea0c/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_6ba770d1-28f8-4bff-ba10-b918ec46ea0c/bin-2019/uautomizer --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1b97bc973900e2f9596f533e03f1df56d5945f81 .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.1.23-5842f4b [2018-11-18 17:07:28,099 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 17:07:28,101 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 17:07:28,110 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 17:07:28,110 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 17:07:28,111 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 17:07:28,112 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 17:07:28,114 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 17:07:28,115 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 17:07:28,116 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 17:07:28,116 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 17:07:28,116 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 17:07:28,117 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 17:07:28,118 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 17:07:28,119 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 17:07:28,119 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 17:07:28,120 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 17:07:28,122 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 17:07:28,123 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 17:07:28,125 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 17:07:28,126 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 17:07:28,127 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 17:07:28,128 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 17:07:28,128 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 17:07:28,129 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 17:07:28,130 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 17:07:28,131 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 17:07:28,131 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 17:07:28,132 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 17:07:28,133 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 17:07:28,134 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 17:07:28,134 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 17:07:28,134 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 17:07:28,135 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 17:07:28,135 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 17:07:28,136 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 17:07:28,136 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_6ba770d1-28f8-4bff-ba10-b918ec46ea0c/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-11-18 17:07:28,147 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 17:07:28,147 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 17:07:28,148 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-18 17:07:28,148 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-11-18 17:07:28,148 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-18 17:07:28,149 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-18 17:07:28,149 INFO L133 SettingsManager]: * Use SBE=true [2018-11-18 17:07:28,150 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 17:07:28,150 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-18 17:07:28,150 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-18 17:07:28,150 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-18 17:07:28,150 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 17:07:28,150 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-18 17:07:28,150 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-18 17:07:28,150 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-18 17:07:28,151 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-18 17:07:28,151 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 17:07:28,151 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 17:07:28,151 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-18 17:07:28,151 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 17:07:28,151 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 17:07:28,152 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-18 17:07:28,152 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-18 17:07:28,152 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 17:07:28,152 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 17:07:28,152 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-18 17:07:28,152 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-18 17:07:28,152 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-18 17:07:28,153 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-18 17:07:28,153 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-18 17:07:28,155 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_6ba770d1-28f8-4bff-ba10-b918ec46ea0c/bin-2019/uautomizer 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 -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1b97bc973900e2f9596f533e03f1df56d5945f81 [2018-11-18 17:07:28,180 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 17:07:28,190 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 17:07:28,192 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 17:07:28,194 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 17:07:28,194 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 17:07:28,195 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_6ba770d1-28f8-4bff-ba10-b918ec46ea0c/bin-2019/uautomizer/../../sv-benchmarks/c/list-ext3-properties/sll_nondet_insert_false-unreach-call_false-valid-memcleanup.i [2018-11-18 17:07:28,247 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_6ba770d1-28f8-4bff-ba10-b918ec46ea0c/bin-2019/uautomizer/data/ce45bbbcb/7f37c4a9354549388bf59e0dd81ede55/FLAG1e20afb17 [2018-11-18 17:07:28,625 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 17:07:28,626 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_6ba770d1-28f8-4bff-ba10-b918ec46ea0c/sv-benchmarks/c/list-ext3-properties/sll_nondet_insert_false-unreach-call_false-valid-memcleanup.i [2018-11-18 17:07:28,638 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_6ba770d1-28f8-4bff-ba10-b918ec46ea0c/bin-2019/uautomizer/data/ce45bbbcb/7f37c4a9354549388bf59e0dd81ede55/FLAG1e20afb17 [2018-11-18 17:07:29,016 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_6ba770d1-28f8-4bff-ba10-b918ec46ea0c/bin-2019/uautomizer/data/ce45bbbcb/7f37c4a9354549388bf59e0dd81ede55 [2018-11-18 17:07:29,018 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 17:07:29,019 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-18 17:07:29,020 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 17:07:29,020 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 17:07:29,022 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 17:07:29,023 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 05:07:29" (1/1) ... [2018-11-18 17:07:29,025 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f3f3673 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:07:29, skipping insertion in model container [2018-11-18 17:07:29,025 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 05:07:29" (1/1) ... [2018-11-18 17:07:29,031 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 17:07:29,063 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 17:07:29,315 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 17:07:29,320 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 17:07:29,421 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 17:07:29,472 INFO L195 MainTranslator]: Completed translation [2018-11-18 17:07:29,473 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:07:29 WrapperNode [2018-11-18 17:07:29,473 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 17:07:29,473 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 17:07:29,474 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 17:07:29,474 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 17:07:29,485 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:07:29" (1/1) ... [2018-11-18 17:07:29,486 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:07:29" (1/1) ... [2018-11-18 17:07:29,498 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:07:29" (1/1) ... [2018-11-18 17:07:29,498 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:07:29" (1/1) ... [2018-11-18 17:07:29,511 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:07:29" (1/1) ... [2018-11-18 17:07:29,517 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:07:29" (1/1) ... [2018-11-18 17:07:29,523 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:07:29" (1/1) ... [2018-11-18 17:07:29,527 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 17:07:29,528 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 17:07:29,528 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 17:07:29,528 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 17:07:29,528 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:07:29" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_6ba770d1-28f8-4bff-ba10-b918ec46ea0c/bin-2019/uautomizer/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 [2018-11-18 17:07:29,584 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-18 17:07:29,584 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 17:07:29,584 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2018-11-18 17:07:29,584 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2018-11-18 17:07:29,584 INFO L138 BoogieDeclarations]: Found implementation of procedure exit [2018-11-18 17:07:29,585 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_create [2018-11-18 17:07:29,585 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_length [2018-11-18 17:07:29,585 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_destroy [2018-11-18 17:07:29,586 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_insert [2018-11-18 17:07:29,586 INFO L138 BoogieDeclarations]: Found implementation of procedure _get_nondet_int [2018-11-18 17:07:29,586 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-18 17:07:29,586 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-11-18 17:07:29,586 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-11-18 17:07:29,586 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2018-11-18 17:07:29,586 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2018-11-18 17:07:29,586 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2018-11-18 17:07:29,587 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2018-11-18 17:07:29,587 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2018-11-18 17:07:29,587 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2018-11-18 17:07:29,587 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2018-11-18 17:07:29,587 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2018-11-18 17:07:29,587 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2018-11-18 17:07:29,587 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2018-11-18 17:07:29,587 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2018-11-18 17:07:29,587 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2018-11-18 17:07:29,587 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2018-11-18 17:07:29,588 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2018-11-18 17:07:29,588 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2018-11-18 17:07:29,588 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2018-11-18 17:07:29,588 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2018-11-18 17:07:29,588 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2018-11-18 17:07:29,588 INFO L130 BoogieDeclarations]: Found specification of procedure select [2018-11-18 17:07:29,588 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2018-11-18 17:07:29,588 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2018-11-18 17:07:29,588 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2018-11-18 17:07:29,588 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2018-11-18 17:07:29,589 INFO L130 BoogieDeclarations]: Found specification of procedure random [2018-11-18 17:07:29,589 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2018-11-18 17:07:29,589 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2018-11-18 17:07:29,589 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2018-11-18 17:07:29,589 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2018-11-18 17:07:29,589 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2018-11-18 17:07:29,589 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2018-11-18 17:07:29,589 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2018-11-18 17:07:29,589 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2018-11-18 17:07:29,589 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2018-11-18 17:07:29,590 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2018-11-18 17:07:29,590 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2018-11-18 17:07:29,590 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2018-11-18 17:07:29,590 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2018-11-18 17:07:29,590 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2018-11-18 17:07:29,590 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2018-11-18 17:07:29,590 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2018-11-18 17:07:29,590 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2018-11-18 17:07:29,590 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2018-11-18 17:07:29,590 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2018-11-18 17:07:29,591 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2018-11-18 17:07:29,591 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2018-11-18 17:07:29,591 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2018-11-18 17:07:29,591 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2018-11-18 17:07:29,591 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2018-11-18 17:07:29,591 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2018-11-18 17:07:29,591 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2018-11-18 17:07:29,591 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2018-11-18 17:07:29,591 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2018-11-18 17:07:29,591 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2018-11-18 17:07:29,592 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2018-11-18 17:07:29,592 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2018-11-18 17:07:29,592 INFO L130 BoogieDeclarations]: Found specification of procedure free [2018-11-18 17:07:29,592 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2018-11-18 17:07:29,592 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2018-11-18 17:07:29,592 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2018-11-18 17:07:29,592 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2018-11-18 17:07:29,592 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2018-11-18 17:07:29,592 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2018-11-18 17:07:29,592 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2018-11-18 17:07:29,592 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2018-11-18 17:07:29,593 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2018-11-18 17:07:29,593 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-18 17:07:29,593 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2018-11-18 17:07:29,593 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2018-11-18 17:07:29,593 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2018-11-18 17:07:29,593 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2018-11-18 17:07:29,593 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2018-11-18 17:07:29,593 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2018-11-18 17:07:29,593 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2018-11-18 17:07:29,593 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2018-11-18 17:07:29,594 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2018-11-18 17:07:29,594 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2018-11-18 17:07:29,594 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2018-11-18 17:07:29,594 INFO L130 BoogieDeclarations]: Found specification of procedure system [2018-11-18 17:07:29,594 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2018-11-18 17:07:29,594 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2018-11-18 17:07:29,594 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2018-11-18 17:07:29,594 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2018-11-18 17:07:29,594 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2018-11-18 17:07:29,594 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2018-11-18 17:07:29,594 INFO L130 BoogieDeclarations]: Found specification of procedure div [2018-11-18 17:07:29,594 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2018-11-18 17:07:29,595 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2018-11-18 17:07:29,595 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2018-11-18 17:07:29,595 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2018-11-18 17:07:29,595 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2018-11-18 17:07:29,595 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2018-11-18 17:07:29,595 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2018-11-18 17:07:29,595 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2018-11-18 17:07:29,595 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2018-11-18 17:07:29,595 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2018-11-18 17:07:29,595 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2018-11-18 17:07:29,596 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2018-11-18 17:07:29,596 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2018-11-18 17:07:29,596 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2018-11-18 17:07:29,596 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2018-11-18 17:07:29,596 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2018-11-18 17:07:29,596 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2018-11-18 17:07:29,596 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2018-11-18 17:07:29,596 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2018-11-18 17:07:29,596 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2018-11-18 17:07:29,596 INFO L130 BoogieDeclarations]: Found specification of procedure sll_create [2018-11-18 17:07:29,596 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-18 17:07:29,597 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-11-18 17:07:29,597 INFO L130 BoogieDeclarations]: Found specification of procedure sll_length [2018-11-18 17:07:29,597 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-11-18 17:07:29,597 INFO L130 BoogieDeclarations]: Found specification of procedure sll_destroy [2018-11-18 17:07:29,597 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-18 17:07:29,597 INFO L130 BoogieDeclarations]: Found specification of procedure sll_insert [2018-11-18 17:07:29,597 INFO L130 BoogieDeclarations]: Found specification of procedure _get_nondet_int [2018-11-18 17:07:29,597 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-18 17:07:29,597 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-18 17:07:29,597 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 17:07:30,133 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 17:07:30,133 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 05:07:30 BoogieIcfgContainer [2018-11-18 17:07:30,134 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 17:07:30,134 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-18 17:07:30,134 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-18 17:07:30,136 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-18 17:07:30,137 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 05:07:29" (1/3) ... [2018-11-18 17:07:30,137 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cb9156e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 05:07:30, skipping insertion in model container [2018-11-18 17:07:30,137 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:07:29" (2/3) ... [2018-11-18 17:07:30,138 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cb9156e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 05:07:30, skipping insertion in model container [2018-11-18 17:07:30,138 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 05:07:30" (3/3) ... [2018-11-18 17:07:30,139 INFO L112 eAbstractionObserver]: Analyzing ICFG sll_nondet_insert_false-unreach-call_false-valid-memcleanup.i [2018-11-18 17:07:30,145 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-18 17:07:30,150 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-18 17:07:30,162 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-18 17:07:30,184 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-18 17:07:30,185 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-18 17:07:30,185 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-18 17:07:30,185 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-18 17:07:30,185 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 17:07:30,186 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 17:07:30,186 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-18 17:07:30,186 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 17:07:30,186 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-18 17:07:30,202 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states. [2018-11-18 17:07:30,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-11-18 17:07:30,208 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 17:07:30,209 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-18 17:07:30,211 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 17:07:30,215 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 17:07:30,215 INFO L82 PathProgramCache]: Analyzing trace with hash -790815212, now seen corresponding path program 1 times [2018-11-18 17:07:30,217 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 17:07:30,217 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 17:07:30,250 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 17:07:30,251 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 17:07:30,251 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 17:07:30,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 17:07:30,313 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-11-18 17:07:30,315 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 17:07:30,315 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_6ba770d1-28f8-4bff-ba10-b918ec46ea0c/bin-2019/uautomizer/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 [2018-11-18 17:07:30,337 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 17:07:30,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 17:07:30,404 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 17:07:30,416 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-11-18 17:07:30,458 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-18 17:07:30,458 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2018-11-18 17:07:30,462 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-18 17:07:30,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-18 17:07:30,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-18 17:07:30,474 INFO L87 Difference]: Start difference. First operand 73 states. Second operand 2 states. [2018-11-18 17:07:30,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 17:07:30,502 INFO L93 Difference]: Finished difference Result 140 states and 182 transitions. [2018-11-18 17:07:30,502 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-18 17:07:30,504 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 37 [2018-11-18 17:07:30,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 17:07:30,512 INFO L225 Difference]: With dead ends: 140 [2018-11-18 17:07:30,512 INFO L226 Difference]: Without dead ends: 58 [2018-11-18 17:07:30,515 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-18 17:07:30,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2018-11-18 17:07:30,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2018-11-18 17:07:30,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2018-11-18 17:07:30,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 67 transitions. [2018-11-18 17:07:30,549 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 67 transitions. Word has length 37 [2018-11-18 17:07:30,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 17:07:30,549 INFO L480 AbstractCegarLoop]: Abstraction has 58 states and 67 transitions. [2018-11-18 17:07:30,549 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-18 17:07:30,549 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 67 transitions. [2018-11-18 17:07:30,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2018-11-18 17:07:30,551 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 17:07:30,551 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-18 17:07:30,551 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 17:07:30,552 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 17:07:30,552 INFO L82 PathProgramCache]: Analyzing trace with hash 240197046, now seen corresponding path program 1 times [2018-11-18 17:07:30,552 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 17:07:30,552 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 17:07:30,553 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 17:07:30,553 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 17:07:30,553 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 17:07:30,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 17:07:30,722 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-11-18 17:07:30,722 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 17:07:30,723 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_6ba770d1-28f8-4bff-ba10-b918ec46ea0c/bin-2019/uautomizer/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 [2018-11-18 17:07:30,739 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 17:07:30,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 17:07:30,776 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 17:07:30,809 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 17:07:30,834 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-18 17:07:30,835 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [9] total 9 [2018-11-18 17:07:30,835 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-18 17:07:30,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-18 17:07:30,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-11-18 17:07:30,836 INFO L87 Difference]: Start difference. First operand 58 states and 67 transitions. Second operand 9 states. [2018-11-18 17:07:31,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 17:07:31,267 INFO L93 Difference]: Finished difference Result 105 states and 122 transitions. [2018-11-18 17:07:31,268 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-18 17:07:31,268 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 49 [2018-11-18 17:07:31,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 17:07:31,269 INFO L225 Difference]: With dead ends: 105 [2018-11-18 17:07:31,269 INFO L226 Difference]: Without dead ends: 61 [2018-11-18 17:07:31,270 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2018-11-18 17:07:31,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2018-11-18 17:07:31,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2018-11-18 17:07:31,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2018-11-18 17:07:31,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 70 transitions. [2018-11-18 17:07:31,278 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 70 transitions. Word has length 49 [2018-11-18 17:07:31,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 17:07:31,280 INFO L480 AbstractCegarLoop]: Abstraction has 61 states and 70 transitions. [2018-11-18 17:07:31,280 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-18 17:07:31,280 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 70 transitions. [2018-11-18 17:07:31,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2018-11-18 17:07:31,282 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 17:07:31,282 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-18 17:07:31,282 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 17:07:31,282 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 17:07:31,283 INFO L82 PathProgramCache]: Analyzing trace with hash 1186762366, now seen corresponding path program 1 times [2018-11-18 17:07:31,283 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 17:07:31,283 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 17:07:31,284 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 17:07:31,284 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 17:07:31,284 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 17:07:31,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 17:07:31,530 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2018-11-18 17:07:31,530 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 17:07:31,530 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2018-11-18 17:07:31,530 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-18 17:07:31,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-18 17:07:31,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2018-11-18 17:07:31,531 INFO L87 Difference]: Start difference. First operand 61 states and 70 transitions. Second operand 10 states. [2018-11-18 17:07:31,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 17:07:31,720 INFO L93 Difference]: Finished difference Result 85 states and 99 transitions. [2018-11-18 17:07:31,720 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-18 17:07:31,720 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 54 [2018-11-18 17:07:31,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 17:07:31,723 INFO L225 Difference]: With dead ends: 85 [2018-11-18 17:07:31,723 INFO L226 Difference]: Without dead ends: 81 [2018-11-18 17:07:31,723 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2018-11-18 17:07:31,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2018-11-18 17:07:31,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 72. [2018-11-18 17:07:31,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2018-11-18 17:07:31,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 85 transitions. [2018-11-18 17:07:31,733 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 85 transitions. Word has length 54 [2018-11-18 17:07:31,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 17:07:31,733 INFO L480 AbstractCegarLoop]: Abstraction has 72 states and 85 transitions. [2018-11-18 17:07:31,733 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-18 17:07:31,734 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 85 transitions. [2018-11-18 17:07:31,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2018-11-18 17:07:31,735 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 17:07:31,735 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-18 17:07:31,735 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 17:07:31,735 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 17:07:31,735 INFO L82 PathProgramCache]: Analyzing trace with hash 805766948, now seen corresponding path program 1 times [2018-11-18 17:07:31,736 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 17:07:31,736 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 17:07:31,737 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 17:07:31,737 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 17:07:31,737 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 17:07:31,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 17:07:31,910 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-11-18 17:07:31,911 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 17:07:31,911 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_6ba770d1-28f8-4bff-ba10-b918ec46ea0c/bin-2019/uautomizer/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 [2018-11-18 17:07:31,920 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 17:07:31,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 17:07:31,960 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 17:07:31,976 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-11-18 17:07:31,992 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 17:07:31,992 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2018-11-18 17:07:31,993 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-18 17:07:31,993 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-18 17:07:31,993 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2018-11-18 17:07:31,993 INFO L87 Difference]: Start difference. First operand 72 states and 85 transitions. Second operand 10 states. [2018-11-18 17:07:32,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 17:07:32,134 INFO L93 Difference]: Finished difference Result 132 states and 157 transitions. [2018-11-18 17:07:32,134 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-11-18 17:07:32,134 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 56 [2018-11-18 17:07:32,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 17:07:32,135 INFO L225 Difference]: With dead ends: 132 [2018-11-18 17:07:32,135 INFO L226 Difference]: Without dead ends: 77 [2018-11-18 17:07:32,136 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2018-11-18 17:07:32,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2018-11-18 17:07:32,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2018-11-18 17:07:32,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2018-11-18 17:07:32,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 90 transitions. [2018-11-18 17:07:32,145 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 90 transitions. Word has length 56 [2018-11-18 17:07:32,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 17:07:32,145 INFO L480 AbstractCegarLoop]: Abstraction has 77 states and 90 transitions. [2018-11-18 17:07:32,145 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-18 17:07:32,145 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 90 transitions. [2018-11-18 17:07:32,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2018-11-18 17:07:32,146 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 17:07:32,147 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 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] [2018-11-18 17:07:32,147 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 17:07:32,147 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 17:07:32,147 INFO L82 PathProgramCache]: Analyzing trace with hash 1690871132, now seen corresponding path program 2 times [2018-11-18 17:07:32,147 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 17:07:32,147 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 17:07:32,148 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 17:07:32,149 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 17:07:32,149 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 17:07:32,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 17:07:32,506 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2018-11-18 17:07:32,506 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 17:07:32,506 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-11-18 17:07:32,507 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-18 17:07:32,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-18 17:07:32,507 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-11-18 17:07:32,507 INFO L87 Difference]: Start difference. First operand 77 states and 90 transitions. Second operand 7 states. [2018-11-18 17:07:32,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 17:07:32,569 INFO L93 Difference]: Finished difference Result 141 states and 169 transitions. [2018-11-18 17:07:32,570 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-18 17:07:32,570 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 61 [2018-11-18 17:07:32,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 17:07:32,571 INFO L225 Difference]: With dead ends: 141 [2018-11-18 17:07:32,571 INFO L226 Difference]: Without dead ends: 95 [2018-11-18 17:07:32,572 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2018-11-18 17:07:32,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2018-11-18 17:07:32,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 89. [2018-11-18 17:07:32,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2018-11-18 17:07:32,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 106 transitions. [2018-11-18 17:07:32,579 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 106 transitions. Word has length 61 [2018-11-18 17:07:32,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 17:07:32,579 INFO L480 AbstractCegarLoop]: Abstraction has 89 states and 106 transitions. [2018-11-18 17:07:32,579 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-18 17:07:32,579 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 106 transitions. [2018-11-18 17:07:32,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2018-11-18 17:07:32,580 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 17:07:32,580 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 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] [2018-11-18 17:07:32,580 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 17:07:32,580 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 17:07:32,580 INFO L82 PathProgramCache]: Analyzing trace with hash 411007454, now seen corresponding path program 1 times [2018-11-18 17:07:32,580 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 17:07:32,581 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 17:07:32,581 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 17:07:32,582 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 17:07:32,582 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 17:07:32,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 17:07:32,809 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2018-11-18 17:07:32,809 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 17:07:32,809 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_6ba770d1-28f8-4bff-ba10-b918ec46ea0c/bin-2019/uautomizer/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 [2018-11-18 17:07:32,819 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 17:07:32,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 17:07:32,866 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 17:07:32,893 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 8 [2018-11-18 17:07:32,896 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-11-18 17:07:32,896 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-18 17:07:32,913 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:07:32,955 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:07:32,955 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:23, output treesize:16 [2018-11-18 17:07:33,013 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 20 treesize of output 32 [2018-11-18 17:07:33,018 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 18 [2018-11-18 17:07:33,018 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-18 17:07:33,031 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 16 [2018-11-18 17:07:33,031 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-11-18 17:07:33,037 INFO L267 ElimStorePlain]: Start of recursive call 2: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:07:33,045 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 8 [2018-11-18 17:07:33,047 INFO L477 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 8 treesize of output 7 [2018-11-18 17:07:33,047 INFO L267 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2018-11-18 17:07:33,049 INFO L267 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:07:33,054 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:07:33,055 INFO L202 ElimStorePlain]: Needed 6 recursive calls to eliminate 3 variables, input treesize:38, output treesize:31 [2018-11-18 17:07:33,156 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2018-11-18 17:07:33,158 INFO L477 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 11 treesize of output 3 [2018-11-18 17:07:33,158 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-18 17:07:33,161 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:07:33,166 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-18 17:07:33,166 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:42, output treesize:31 [2018-11-18 17:07:35,404 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 19 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 17:07:35,420 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 17:07:35,420 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 16] total 22 [2018-11-18 17:07:35,420 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-11-18 17:07:35,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-11-18 17:07:35,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=403, Unknown=0, NotChecked=0, Total=462 [2018-11-18 17:07:35,421 INFO L87 Difference]: Start difference. First operand 89 states and 106 transitions. Second operand 22 states. [2018-11-18 17:07:50,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 17:07:50,237 INFO L93 Difference]: Finished difference Result 154 states and 178 transitions. [2018-11-18 17:07:50,238 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-11-18 17:07:50,238 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 61 [2018-11-18 17:07:50,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 17:07:50,239 INFO L225 Difference]: With dead ends: 154 [2018-11-18 17:07:50,239 INFO L226 Difference]: Without dead ends: 144 [2018-11-18 17:07:50,240 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 53 SyntacticMatches, 4 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 185 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=145, Invalid=911, Unknown=0, NotChecked=0, Total=1056 [2018-11-18 17:07:50,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2018-11-18 17:07:50,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 103. [2018-11-18 17:07:50,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2018-11-18 17:07:50,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 120 transitions. [2018-11-18 17:07:50,250 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 120 transitions. Word has length 61 [2018-11-18 17:07:50,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 17:07:50,251 INFO L480 AbstractCegarLoop]: Abstraction has 103 states and 120 transitions. [2018-11-18 17:07:50,251 INFO L481 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-11-18 17:07:50,251 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 120 transitions. [2018-11-18 17:07:50,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2018-11-18 17:07:50,252 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 17:07:50,252 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2018-11-18 17:07:50,252 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 17:07:50,252 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 17:07:50,253 INFO L82 PathProgramCache]: Analyzing trace with hash -1665361276, now seen corresponding path program 2 times [2018-11-18 17:07:50,253 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 17:07:50,253 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 17:07:50,254 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 17:07:50,254 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 17:07:50,254 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 17:07:50,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 17:07:50,641 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2018-11-18 17:07:50,641 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 17:07:50,641 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_6ba770d1-28f8-4bff-ba10-b918ec46ea0c/bin-2019/uautomizer/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 [2018-11-18 17:07:50,649 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-18 17:07:50,677 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-18 17:07:50,677 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 17:07:50,683 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 17:07:50,744 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2018-11-18 17:07:50,761 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 17:07:50,761 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 14 [2018-11-18 17:07:50,761 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-11-18 17:07:50,762 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-11-18 17:07:50,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2018-11-18 17:07:50,762 INFO L87 Difference]: Start difference. First operand 103 states and 120 transitions. Second operand 14 states. [2018-11-18 17:07:50,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 17:07:50,974 INFO L93 Difference]: Finished difference Result 171 states and 212 transitions. [2018-11-18 17:07:50,979 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-11-18 17:07:50,979 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 63 [2018-11-18 17:07:50,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 17:07:50,980 INFO L225 Difference]: With dead ends: 171 [2018-11-18 17:07:50,981 INFO L226 Difference]: Without dead ends: 167 [2018-11-18 17:07:50,981 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 59 SyntacticMatches, 6 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2018-11-18 17:07:50,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2018-11-18 17:07:51,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 126. [2018-11-18 17:07:51,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2018-11-18 17:07:51,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 151 transitions. [2018-11-18 17:07:51,007 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 151 transitions. Word has length 63 [2018-11-18 17:07:51,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 17:07:51,007 INFO L480 AbstractCegarLoop]: Abstraction has 126 states and 151 transitions. [2018-11-18 17:07:51,007 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-11-18 17:07:51,008 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 151 transitions. [2018-11-18 17:07:51,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2018-11-18 17:07:51,009 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 17:07:51,009 INFO L375 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 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] [2018-11-18 17:07:51,009 INFO L423 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 17:07:51,009 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 17:07:51,009 INFO L82 PathProgramCache]: Analyzing trace with hash 104081834, now seen corresponding path program 3 times [2018-11-18 17:07:51,009 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 17:07:51,009 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 17:07:51,010 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 17:07:51,011 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 17:07:51,011 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 17:07:51,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 17:07:51,531 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2018-11-18 17:07:51,531 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 17:07:51,531 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_6ba770d1-28f8-4bff-ba10-b918ec46ea0c/bin-2019/uautomizer/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 17:07:51,540 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-18 17:07:51,577 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-11-18 17:07:51,577 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 17:07:51,582 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 17:07:51,589 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-11-18 17:07:51,590 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-11-18 17:07:51,591 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:07:51,592 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2018-11-18 17:07:51,744 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 8 [2018-11-18 17:07:51,749 INFO L477 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 8 treesize of output 7 [2018-11-18 17:07:51,749 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-18 17:07:51,751 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:07:51,759 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 8 [2018-11-18 17:07:51,761 INFO L477 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 8 treesize of output 7 [2018-11-18 17:07:51,761 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-11-18 17:07:51,763 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:07:51,768 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:07:51,768 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 2 variables, input treesize:34, output treesize:26 [2018-11-18 17:07:51,835 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:07:51,839 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 20 [2018-11-18 17:07:51,842 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-11-18 17:07:51,842 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-18 17:07:51,847 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:07:51,857 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:07:51,860 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 24 [2018-11-18 17:07:51,862 INFO L477 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 8 treesize of output 7 [2018-11-18 17:07:51,862 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-11-18 17:07:51,866 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:07:51,874 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:07:51,875 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 4 variables, input treesize:53, output treesize:55 [2018-11-18 17:07:51,950 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:07:51,951 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:07:51,952 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:07:51,953 INFO L477 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 20 treesize of output 21 [2018-11-18 17:07:51,953 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-11-18 17:07:51,961 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:07:51,961 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:60, output treesize:54 [2018-11-18 17:07:52,046 INFO L477 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 59 [2018-11-18 17:07:52,051 INFO L477 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 8 treesize of output 7 [2018-11-18 17:07:52,051 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-18 17:07:52,063 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:07:52,079 INFO L477 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 58 treesize of output 62 [2018-11-18 17:07:52,081 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-11-18 17:07:52,082 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-11-18 17:07:52,088 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:07:52,096 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:07:52,097 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 3 variables, input treesize:73, output treesize:90 [2018-11-18 17:07:53,147 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 8 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 17:07:53,163 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 17:07:53,163 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 32 [2018-11-18 17:07:53,164 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-11-18 17:07:53,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-11-18 17:07:53,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=912, Unknown=3, NotChecked=0, Total=992 [2018-11-18 17:07:53,164 INFO L87 Difference]: Start difference. First operand 126 states and 151 transitions. Second operand 32 states. [2018-11-18 17:07:55,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 17:07:55,202 INFO L93 Difference]: Finished difference Result 237 states and 285 transitions. [2018-11-18 17:07:55,202 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-11-18 17:07:55,202 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 65 [2018-11-18 17:07:55,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 17:07:55,204 INFO L225 Difference]: With dead ends: 237 [2018-11-18 17:07:55,204 INFO L226 Difference]: Without dead ends: 216 [2018-11-18 17:07:55,205 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 46 SyntacticMatches, 7 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 401 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=177, Invalid=2076, Unknown=3, NotChecked=0, Total=2256 [2018-11-18 17:07:55,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2018-11-18 17:07:55,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 176. [2018-11-18 17:07:55,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176 states. [2018-11-18 17:07:55,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 212 transitions. [2018-11-18 17:07:55,226 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 212 transitions. Word has length 65 [2018-11-18 17:07:55,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 17:07:55,227 INFO L480 AbstractCegarLoop]: Abstraction has 176 states and 212 transitions. [2018-11-18 17:07:55,227 INFO L481 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-11-18 17:07:55,227 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 212 transitions. [2018-11-18 17:07:55,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2018-11-18 17:07:55,228 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 17:07:55,228 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2018-11-18 17:07:55,228 INFO L423 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 17:07:55,229 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 17:07:55,229 INFO L82 PathProgramCache]: Analyzing trace with hash -1077740242, now seen corresponding path program 1 times [2018-11-18 17:07:55,229 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 17:07:55,229 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 17:07:55,230 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 17:07:55,230 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 17:07:55,230 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 17:07:55,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 17:07:55,321 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 4 proven. 22 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-11-18 17:07:55,321 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 17:07:55,321 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_6ba770d1-28f8-4bff-ba10-b918ec46ea0c/bin-2019/uautomizer/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 17:07:55,328 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 17:07:55,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 17:07:55,369 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 17:07:55,397 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 16 proven. 11 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-11-18 17:07:55,412 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 17:07:55,413 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 12 [2018-11-18 17:07:55,413 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-11-18 17:07:55,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-11-18 17:07:55,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2018-11-18 17:07:55,413 INFO L87 Difference]: Start difference. First operand 176 states and 212 transitions. Second operand 12 states. [2018-11-18 17:07:55,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 17:07:55,545 INFO L93 Difference]: Finished difference Result 276 states and 337 transitions. [2018-11-18 17:07:55,545 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-11-18 17:07:55,545 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 67 [2018-11-18 17:07:55,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 17:07:55,546 INFO L225 Difference]: With dead ends: 276 [2018-11-18 17:07:55,546 INFO L226 Difference]: Without dead ends: 191 [2018-11-18 17:07:55,547 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2018-11-18 17:07:55,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2018-11-18 17:07:55,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 169. [2018-11-18 17:07:55,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2018-11-18 17:07:55,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 202 transitions. [2018-11-18 17:07:55,566 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 202 transitions. Word has length 67 [2018-11-18 17:07:55,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 17:07:55,566 INFO L480 AbstractCegarLoop]: Abstraction has 169 states and 202 transitions. [2018-11-18 17:07:55,566 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-11-18 17:07:55,566 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 202 transitions. [2018-11-18 17:07:55,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2018-11-18 17:07:55,567 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 17:07:55,568 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2018-11-18 17:07:55,568 INFO L423 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 17:07:55,568 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 17:07:55,568 INFO L82 PathProgramCache]: Analyzing trace with hash -1796955880, now seen corresponding path program 1 times [2018-11-18 17:07:55,568 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 17:07:55,568 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 17:07:55,572 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 17:07:55,572 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 17:07:55,572 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 17:07:55,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 17:07:55,729 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-11-18 17:07:55,729 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 17:07:55,729 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_6ba770d1-28f8-4bff-ba10-b918ec46ea0c/bin-2019/uautomizer/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 [2018-11-18 17:07:55,740 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 17:07:55,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 17:07:55,766 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 17:07:55,817 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-11-18 17:07:55,842 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 17:07:55,843 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 14 [2018-11-18 17:07:55,843 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-11-18 17:07:55,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-11-18 17:07:55,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2018-11-18 17:07:55,843 INFO L87 Difference]: Start difference. First operand 169 states and 202 transitions. Second operand 14 states. [2018-11-18 17:07:56,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 17:07:56,066 INFO L93 Difference]: Finished difference Result 339 states and 420 transitions. [2018-11-18 17:07:56,066 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-11-18 17:07:56,066 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 67 [2018-11-18 17:07:56,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 17:07:56,068 INFO L225 Difference]: With dead ends: 339 [2018-11-18 17:07:56,068 INFO L226 Difference]: Without dead ends: 223 [2018-11-18 17:07:56,068 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=102, Invalid=360, Unknown=0, NotChecked=0, Total=462 [2018-11-18 17:07:56,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2018-11-18 17:07:56,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 193. [2018-11-18 17:07:56,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 193 states. [2018-11-18 17:07:56,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 235 transitions. [2018-11-18 17:07:56,084 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 235 transitions. Word has length 67 [2018-11-18 17:07:56,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 17:07:56,085 INFO L480 AbstractCegarLoop]: Abstraction has 193 states and 235 transitions. [2018-11-18 17:07:56,085 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-11-18 17:07:56,085 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 235 transitions. [2018-11-18 17:07:56,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2018-11-18 17:07:56,086 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 17:07:56,086 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 17:07:56,086 INFO L423 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 17:07:56,086 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 17:07:56,086 INFO L82 PathProgramCache]: Analyzing trace with hash -1656407270, now seen corresponding path program 1 times [2018-11-18 17:07:56,086 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 17:07:56,087 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 17:07:56,087 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 17:07:56,087 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 17:07:56,088 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 17:07:56,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 17:07:56,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 17:07:56,133 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-11-18 17:07:56,165 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 05:07:56 BoogieIcfgContainer [2018-11-18 17:07:56,165 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-18 17:07:56,166 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-18 17:07:56,166 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-18 17:07:56,166 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-18 17:07:56,167 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 05:07:30" (3/4) ... [2018-11-18 17:07:56,170 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-11-18 17:07:56,220 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_6ba770d1-28f8-4bff-ba10-b918ec46ea0c/bin-2019/uautomizer/witness.graphml [2018-11-18 17:07:56,221 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-18 17:07:56,221 INFO L168 Benchmark]: Toolchain (without parser) took 27202.54 ms. Allocated memory was 1.0 GB in the beginning and 1.4 GB in the end (delta: 322.4 MB). Free memory was 955.9 MB in the beginning and 977.5 MB in the end (delta: -21.6 MB). Peak memory consumption was 300.8 MB. Max. memory is 11.5 GB. [2018-11-18 17:07:56,223 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 17:07:56,223 INFO L168 Benchmark]: CACSL2BoogieTranslator took 453.13 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 165.2 MB). Free memory was 955.9 MB in the beginning and 1.1 GB in the end (delta: -187.1 MB). Peak memory consumption was 34.6 MB. Max. memory is 11.5 GB. [2018-11-18 17:07:56,223 INFO L168 Benchmark]: Boogie Preprocessor took 53.87 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: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 11.5 GB. [2018-11-18 17:07:56,224 INFO L168 Benchmark]: RCFGBuilder took 605.95 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: 50.6 MB). Peak memory consumption was 50.6 MB. Max. memory is 11.5 GB. [2018-11-18 17:07:56,224 INFO L168 Benchmark]: TraceAbstraction took 26030.91 ms. Allocated memory was 1.2 GB in the beginning and 1.4 GB in the end (delta: 157.3 MB). Free memory was 1.1 GB in the beginning and 985.0 MB in the end (delta: 104.1 MB). Peak memory consumption was 261.4 MB. Max. memory is 11.5 GB. [2018-11-18 17:07:56,224 INFO L168 Benchmark]: Witness Printer took 54.80 ms. Allocated memory is still 1.4 GB. Free memory was 985.0 MB in the beginning and 977.5 MB in the end (delta: 7.5 MB). Peak memory consumption was 7.5 MB. Max. memory is 11.5 GB. [2018-11-18 17:07:56,229 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 453.13 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 165.2 MB). Free memory was 955.9 MB in the beginning and 1.1 GB in the end (delta: -187.1 MB). Peak memory consumption was 34.6 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 53.87 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: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 11.5 GB. * RCFGBuilder took 605.95 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: 50.6 MB). Peak memory consumption was 50.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 26030.91 ms. Allocated memory was 1.2 GB in the beginning and 1.4 GB in the end (delta: 157.3 MB). Free memory was 1.1 GB in the beginning and 985.0 MB in the end (delta: 104.1 MB). Peak memory consumption was 261.4 MB. Max. memory is 11.5 GB. * Witness Printer took 54.80 ms. Allocated memory is still 1.4 GB. Free memory was 985.0 MB in the beginning and 977.5 MB in the end (delta: 7.5 MB). Peak memory consumption was 7.5 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 630]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L616] CALL, EXPR _get_nondet_int(2, 5) VAL [\old(from)=2, \old(until)=5] [L609] int len = from; VAL [\old(from)=2, \old(until)=5, from=2, len=2, until=5] [L610] len < until && __VERIFIER_nondet_int() [L610] len < until && __VERIFIER_nondet_int() VAL [\old(from)=2, \old(until)=5, __VERIFIER_nondet_int()=0, from=2, len=2, len < until && __VERIFIER_nondet_int()=0, until=5] [L610] COND FALSE !(len < until && __VERIFIER_nondet_int()) [L613] RET return len; VAL [\old(from)=2, \old(until)=5, \result=2, from=2, len=2, until=5] [L616] EXPR _get_nondet_int(2, 5) VAL [_get_nondet_int(2, 5)=2] [L616] const int len = _get_nondet_int(2, 5); [L617] FCALL SLL s = sll_create(len); VAL [len=2, s={8:0}] [L617] CALL, EXPR sll_create(len) VAL [\old(len)=2] [L564] SLL head = ((void *)0); VAL [\old(len)=2, head={0:0}, len=2] [L565] EXPR len-- VAL [\old(len)=2, head={0:0}, len=1, len--=2] [L565] COND TRUE len-- > 0 [L566] EXPR, FCALL malloc(sizeof(struct node)) [L566] SLL new_head = (SLL) malloc(sizeof(struct node)); VAL [\old(len)=2, head={0:0}, len=1, malloc(sizeof(struct node))={7:0}, new_head={7:0}] [L567] COND FALSE !(((void *)0) == new_head) VAL [\old(len)=2, head={0:0}, len=1, malloc(sizeof(struct node))={7:0}, new_head={7:0}] [L570] FCALL new_head->next = head [L571] head = new_head VAL [\old(len)=2, head={7:0}, len=1, malloc(sizeof(struct node))={7:0}, new_head={7:0}] [L565] EXPR len-- VAL [\old(len)=2, head={7:0}, len=0, len--=1, malloc(sizeof(struct node))={7:0}, new_head={7:0}] [L565] COND TRUE len-- > 0 [L566] EXPR, FCALL malloc(sizeof(struct node)) [L566] SLL new_head = (SLL) malloc(sizeof(struct node)); VAL [\old(len)=2, head={7:0}, len=0, malloc(sizeof(struct node))={6:0}, new_head={6:0}] [L567] COND FALSE !(((void *)0) == new_head) VAL [\old(len)=2, head={7:0}, len=0, malloc(sizeof(struct node))={6:0}, new_head={6:0}] [L570] FCALL new_head->next = head [L571] head = new_head VAL [\old(len)=2, head={6:0}, len=0, malloc(sizeof(struct node))={6:0}, new_head={6:0}] [L565] EXPR len-- VAL [\old(len)=2, head={6:0}, len=-1, len--=0, malloc(sizeof(struct node))={6:0}, new_head={6:0}] [L565] COND FALSE !(len-- > 0) [L573] RET return head; VAL [\old(len)=2, \result={6:0}, head={6:0}, len=-1, malloc(sizeof(struct node))={6:0}, new_head={6:0}] [L617] EXPR sll_create(len) VAL [len=2, s={8:0}, sll_create(len)={6:0}] [L617] FCALL SLL s = sll_create(len); [L618] CALL, EXPR _get_nondet_int(0, len - 1) VAL [\old(from)=0, \old(until)=1] [L609] int len = from; VAL [\old(from)=0, \old(until)=1, from=0, len=0, until=1] [L610] len < until && __VERIFIER_nondet_int() [L610] len < until && __VERIFIER_nondet_int() VAL [\old(from)=0, \old(until)=1, __VERIFIER_nondet_int()=1, from=0, len=0, len < until && __VERIFIER_nondet_int()=1, until=1] [L610] COND TRUE len < until && __VERIFIER_nondet_int() [L611] len++ VAL [\old(from)=0, \old(until)=1, from=0, len=1, until=1] [L610] len < until && __VERIFIER_nondet_int() VAL [\old(from)=0, \old(until)=1, from=0, len=1, len < until && __VERIFIER_nondet_int()=0, until=1] [L610] COND FALSE !(len < until && __VERIFIER_nondet_int()) [L613] RET return len; VAL [\old(from)=0, \old(until)=1, \result=1, from=0, len=1, until=1] [L618] EXPR _get_nondet_int(0, len - 1) VAL [_get_nondet_int(0, len - 1)=1, len=2, s={8:0}] [L618] const int k = _get_nondet_int(0, len - 1); [L619] int i = 0; VAL [i=0, k=1, len=2, s={8:0}] [L620] i < k && __VERIFIER_nondet_int() [L620] i < k && __VERIFIER_nondet_int() VAL [__VERIFIER_nondet_int()=0, i=0, i < k && __VERIFIER_nondet_int()=0, k=1, len=2, s={8:0}] [L620] COND FALSE !(i < k && __VERIFIER_nondet_int()) [L625] EXPR, FCALL \read(s) VAL [\read(s)={6:0}, i=0, k=1, len=2, s={8:0}] [L625] CALL, EXPR sll_length(s) VAL [head={6:0}] [L576] int len = 0; VAL [head={6:0}, head={6:0}, len=0] [L577] COND TRUE \read(head) [L578] len++ [L579] EXPR, FCALL head->next [L579] head = head->next [L577] COND TRUE \read(head) [L578] len++ [L579] EXPR, FCALL head->next [L579] head = head->next [L577] COND FALSE !(\read(head)) VAL [head={6:0}, head={0:0}, len=2] [L581] RET return len; VAL [\result=2, head={0:0}, head={6:0}, len=2] [L625] EXPR sll_length(s) VAL [\read(s)={6:0}, i=0, k=1, len=2, s={8:0}, sll_length(s)=2] [L625] COND TRUE k + len != sll_length(s) [L630] __VERIFIER_error() VAL [i=0, k=1, len=2, s={8:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 11 procedures, 81 locations, 1 error locations. UNSAFE Result, 25.9s OverallTime, 11 OverallIterations, 4 TraceHistogramMax, 18.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 693 SDtfs, 407 SDslu, 5487 SDs, 0 SdLazy, 3188 SolverSat, 89 SolverUnsat, 9 SolverUnknown, 0 SolverNotchecked, 16.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 619 GetRequests, 440 SyntacticMatches, 18 SemanticMatches, 161 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 675 ImplicationChecksByTransitivity, 6.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=193occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 10 MinimizatonAttempts, 189 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 6.4s InterpolantComputationTime, 1112 NumberOfCodeBlocks, 1112 NumberOfCodeBlocksAsserted, 23 NumberOfCheckSat, 1027 ConstructedInterpolants, 38 QuantifiedInterpolants, 553800 SizeOfPredicates, 55 NumberOfNonLiveVariables, 1659 ConjunctsInSsa, 195 ConjunctsInUnsatCore, 18 InterpolantComputations, 4 PerfectInterpolantSequences, 224/370 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...