./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/verifythis/elimination_max.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_73830632-2ef1-4278-9b87-7b1dd8badcf1/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_73830632-2ef1-4278-9b87-7b1dd8badcf1/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_73830632-2ef1-4278-9b87-7b1dd8badcf1/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_73830632-2ef1-4278-9b87-7b1dd8badcf1/bin/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/verifythis/elimination_max.c -s /tmp/vcloud-vcloud-master/worker/run_dir_73830632-2ef1-4278-9b87-7b1dd8badcf1/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_73830632-2ef1-4278-9b87-7b1dd8badcf1/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b909735efeb9bc00b7df4035956af92a753b9076 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-28 03:21:25,727 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 03:21:25,729 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 03:21:25,776 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 03:21:25,776 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 03:21:25,778 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 03:21:25,779 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 03:21:25,782 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 03:21:25,784 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 03:21:25,785 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 03:21:25,786 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 03:21:25,788 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 03:21:25,788 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 03:21:25,789 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 03:21:25,791 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 03:21:25,792 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 03:21:25,793 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 03:21:25,794 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 03:21:25,797 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 03:21:25,799 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 03:21:25,801 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 03:21:25,802 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 03:21:25,804 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 03:21:25,805 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 03:21:25,808 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 03:21:25,808 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 03:21:25,809 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 03:21:25,810 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 03:21:25,810 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 03:21:25,811 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 03:21:25,812 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 03:21:25,813 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 03:21:25,813 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 03:21:25,814 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 03:21:25,816 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 03:21:25,816 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 03:21:25,817 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 03:21:25,817 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 03:21:25,818 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 03:21:25,819 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 03:21:25,819 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 03:21:25,827 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_73830632-2ef1-4278-9b87-7b1dd8badcf1/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2020-11-28 03:21:25,858 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 03:21:25,858 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 03:21:25,861 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 03:21:25,861 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 03:21:25,861 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 03:21:25,861 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 03:21:25,862 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 03:21:25,862 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-28 03:21:25,862 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 03:21:25,862 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 03:21:25,863 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 03:21:25,863 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-11-28 03:21:25,864 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-11-28 03:21:25,864 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-11-28 03:21:25,864 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 03:21:25,864 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-28 03:21:25,865 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 03:21:25,865 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 03:21:25,865 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 03:21:25,865 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 03:21:25,865 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 03:21:25,866 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 03:21:25,866 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 03:21:25,866 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 03:21:25,866 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 03:21:25,866 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-28 03:21:25,867 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 03:21:25,867 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 03:21:25,867 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_73830632-2ef1-4278-9b87-7b1dd8badcf1/bin/uautomizer/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_73830632-2ef1-4278-9b87-7b1dd8badcf1/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b909735efeb9bc00b7df4035956af92a753b9076 [2020-11-28 03:21:26,157 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 03:21:26,191 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 03:21:26,194 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 03:21:26,195 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 03:21:26,198 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 03:21:26,200 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_73830632-2ef1-4278-9b87-7b1dd8badcf1/bin/uautomizer/../../sv-benchmarks/c/verifythis/elimination_max.c [2020-11-28 03:21:26,271 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_73830632-2ef1-4278-9b87-7b1dd8badcf1/bin/uautomizer/data/bdadb23fc/e30b2d6b3cf443e0b1c15a21a1f30fdc/FLAG590b1b6bd [2020-11-28 03:21:26,812 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 03:21:26,812 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_73830632-2ef1-4278-9b87-7b1dd8badcf1/sv-benchmarks/c/verifythis/elimination_max.c [2020-11-28 03:21:26,818 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_73830632-2ef1-4278-9b87-7b1dd8badcf1/bin/uautomizer/data/bdadb23fc/e30b2d6b3cf443e0b1c15a21a1f30fdc/FLAG590b1b6bd [2020-11-28 03:21:27,177 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_73830632-2ef1-4278-9b87-7b1dd8badcf1/bin/uautomizer/data/bdadb23fc/e30b2d6b3cf443e0b1c15a21a1f30fdc [2020-11-28 03:21:27,180 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 03:21:27,181 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-11-28 03:21:27,184 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 03:21:27,184 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 03:21:27,193 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 03:21:27,194 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:21:27" (1/1) ... [2020-11-28 03:21:27,196 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f562b38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:21:27, skipping insertion in model container [2020-11-28 03:21:27,196 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:21:27" (1/1) ... [2020-11-28 03:21:27,204 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 03:21:27,219 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 03:21:27,407 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:21:27,421 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 03:21:27,444 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:21:27,464 INFO L208 MainTranslator]: Completed translation [2020-11-28 03:21:27,465 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:21:27 WrapperNode [2020-11-28 03:21:27,466 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 03:21:27,467 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 03:21:27,467 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 03:21:27,468 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 03:21:27,485 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:21:27" (1/1) ... [2020-11-28 03:21:27,485 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:21:27" (1/1) ... [2020-11-28 03:21:27,494 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:21:27" (1/1) ... [2020-11-28 03:21:27,494 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:21:27" (1/1) ... [2020-11-28 03:21:27,506 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:21:27" (1/1) ... [2020-11-28 03:21:27,511 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:21:27" (1/1) ... [2020-11-28 03:21:27,514 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:21:27" (1/1) ... [2020-11-28 03:21:27,517 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 03:21:27,518 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 03:21:27,518 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 03:21:27,519 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 03:21:27,520 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:21:27" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_73830632-2ef1-4278-9b87-7b1dd8badcf1/bin/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 [2020-11-28 03:21:27,642 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-28 03:21:27,642 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 03:21:27,643 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-28 03:21:27,643 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-11-28 03:21:27,644 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-11-28 03:21:27,644 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-28 03:21:27,645 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-11-28 03:21:27,645 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-11-28 03:21:27,645 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-11-28 03:21:27,646 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-28 03:21:27,648 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-28 03:21:27,648 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-28 03:21:27,648 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 03:21:27,648 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-11-28 03:21:27,649 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-11-28 03:21:27,649 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-11-28 03:21:27,652 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-28 03:21:27,652 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-11-28 03:21:27,652 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-11-28 03:21:27,652 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-28 03:21:27,653 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-28 03:21:27,653 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-28 03:21:27,653 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 03:21:27,653 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 03:21:27,654 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-28 03:21:28,198 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 03:21:28,198 INFO L298 CfgBuilder]: Removed 2 assume(true) statements. [2020-11-28 03:21:28,199 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:21:28 BoogieIcfgContainer [2020-11-28 03:21:28,200 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 03:21:28,201 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 03:21:28,202 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 03:21:28,205 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 03:21:28,205 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:21:27" (1/3) ... [2020-11-28 03:21:28,206 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fd8d440 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:21:28, skipping insertion in model container [2020-11-28 03:21:28,206 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:21:27" (2/3) ... [2020-11-28 03:21:28,207 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fd8d440 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:21:28, skipping insertion in model container [2020-11-28 03:21:28,207 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:21:28" (3/3) ... [2020-11-28 03:21:28,208 INFO L111 eAbstractionObserver]: Analyzing ICFG elimination_max.c [2020-11-28 03:21:28,219 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 03:21:28,224 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 17 error locations. [2020-11-28 03:21:28,235 INFO L253 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2020-11-28 03:21:28,254 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 03:21:28,254 INFO L378 AbstractCegarLoop]: Hoare is false [2020-11-28 03:21:28,254 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 03:21:28,254 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 03:21:28,254 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 03:21:28,254 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 03:21:28,254 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 03:21:28,254 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 03:21:28,273 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states. [2020-11-28 03:21:28,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-11-28 03:21:28,282 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:21:28,283 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:21:28,283 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr15ENSURES_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr14ASSERT_VIOLATIONMEMORY_FREE, mainErr9REQUIRES_VIOLATION, mainErr13ASSERT_VIOLATIONMEMORY_FREE, mainErr5REQUIRES_VIOLATION, mainErr12ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-11-28 03:21:28,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:21:28,290 INFO L82 PathProgramCache]: Analyzing trace with hash -1105579330, now seen corresponding path program 1 times [2020-11-28 03:21:28,300 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:21:28,301 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800964478] [2020-11-28 03:21:28,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:21:28,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:28,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 03:21:28,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:28,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-11-28 03:21:28,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:28,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-11-28 03:21:28,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:28,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:21:28,551 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800964478] [2020-11-28 03:21:28,552 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:21:28,553 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 03:21:28,554 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751067789] [2020-11-28 03:21:28,559 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 03:21:28,560 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:21:28,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 03:21:28,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 03:21:28,578 INFO L87 Difference]: Start difference. First operand 66 states. Second operand 4 states. [2020-11-28 03:21:28,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:21:28,976 INFO L93 Difference]: Finished difference Result 63 states and 67 transitions. [2020-11-28 03:21:28,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 03:21:28,978 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2020-11-28 03:21:28,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:21:28,989 INFO L225 Difference]: With dead ends: 63 [2020-11-28 03:21:28,989 INFO L226 Difference]: Without dead ends: 60 [2020-11-28 03:21:28,991 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:21:29,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-11-28 03:21:29,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2020-11-28 03:21:29,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-11-28 03:21:29,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 64 transitions. [2020-11-28 03:21:29,052 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 64 transitions. Word has length 19 [2020-11-28 03:21:29,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:21:29,054 INFO L481 AbstractCegarLoop]: Abstraction has 60 states and 64 transitions. [2020-11-28 03:21:29,055 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 03:21:29,055 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 64 transitions. [2020-11-28 03:21:29,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-11-28 03:21:29,057 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:21:29,057 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:21:29,058 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 03:21:29,058 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr15ENSURES_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr14ASSERT_VIOLATIONMEMORY_FREE, mainErr9REQUIRES_VIOLATION, mainErr13ASSERT_VIOLATIONMEMORY_FREE, mainErr5REQUIRES_VIOLATION, mainErr12ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-11-28 03:21:29,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:21:29,059 INFO L82 PathProgramCache]: Analyzing trace with hash -404514752, now seen corresponding path program 1 times [2020-11-28 03:21:29,059 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:21:29,061 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104029083] [2020-11-28 03:21:29,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:21:29,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:29,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 03:21:29,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:29,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-11-28 03:21:29,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:29,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-11-28 03:21:29,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:29,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:21:29,327 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104029083] [2020-11-28 03:21:29,327 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:21:29,328 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-28 03:21:29,328 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517136830] [2020-11-28 03:21:29,329 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 03:21:29,329 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:21:29,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 03:21:29,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-28 03:21:29,331 INFO L87 Difference]: Start difference. First operand 60 states and 64 transitions. Second operand 6 states. [2020-11-28 03:21:29,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:21:29,721 INFO L93 Difference]: Finished difference Result 53 states and 57 transitions. [2020-11-28 03:21:29,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-28 03:21:29,722 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2020-11-28 03:21:29,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:21:29,724 INFO L225 Difference]: With dead ends: 53 [2020-11-28 03:21:29,724 INFO L226 Difference]: Without dead ends: 53 [2020-11-28 03:21:29,725 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-11-28 03:21:29,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-11-28 03:21:29,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2020-11-28 03:21:29,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-11-28 03:21:29,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 57 transitions. [2020-11-28 03:21:29,742 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 57 transitions. Word has length 19 [2020-11-28 03:21:29,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:21:29,744 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 57 transitions. [2020-11-28 03:21:29,745 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 03:21:29,745 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 57 transitions. [2020-11-28 03:21:29,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-11-28 03:21:29,747 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:21:29,747 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:21:29,748 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-28 03:21:29,748 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr15ENSURES_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr14ASSERT_VIOLATIONMEMORY_FREE, mainErr9REQUIRES_VIOLATION, mainErr13ASSERT_VIOLATIONMEMORY_FREE, mainErr5REQUIRES_VIOLATION, mainErr12ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-11-28 03:21:29,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:21:29,756 INFO L82 PathProgramCache]: Analyzing trace with hash -404514751, now seen corresponding path program 1 times [2020-11-28 03:21:29,757 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:21:29,757 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553705192] [2020-11-28 03:21:29,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:21:29,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:29,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 03:21:29,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:29,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-11-28 03:21:29,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:30,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-11-28 03:21:30,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:30,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:21:30,031 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553705192] [2020-11-28 03:21:30,032 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:21:30,032 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-28 03:21:30,033 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383258399] [2020-11-28 03:21:30,035 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-28 03:21:30,035 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:21:30,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-28 03:21:30,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-28 03:21:30,038 INFO L87 Difference]: Start difference. First operand 53 states and 57 transitions. Second operand 7 states. [2020-11-28 03:21:30,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:21:30,618 INFO L93 Difference]: Finished difference Result 101 states and 114 transitions. [2020-11-28 03:21:30,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-28 03:21:30,619 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-11-28 03:21:30,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:21:30,621 INFO L225 Difference]: With dead ends: 101 [2020-11-28 03:21:30,621 INFO L226 Difference]: Without dead ends: 101 [2020-11-28 03:21:30,622 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-11-28 03:21:30,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2020-11-28 03:21:30,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 83. [2020-11-28 03:21:30,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-11-28 03:21:30,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 105 transitions. [2020-11-28 03:21:30,646 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 105 transitions. Word has length 19 [2020-11-28 03:21:30,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:21:30,646 INFO L481 AbstractCegarLoop]: Abstraction has 83 states and 105 transitions. [2020-11-28 03:21:30,647 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-28 03:21:30,647 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 105 transitions. [2020-11-28 03:21:30,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-11-28 03:21:30,648 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:21:30,648 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:21:30,648 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-28 03:21:30,648 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr15ENSURES_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr14ASSERT_VIOLATIONMEMORY_FREE, mainErr9REQUIRES_VIOLATION, mainErr13ASSERT_VIOLATIONMEMORY_FREE, mainErr5REQUIRES_VIOLATION, mainErr12ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-11-28 03:21:30,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:21:30,649 INFO L82 PathProgramCache]: Analyzing trace with hash 344944575, now seen corresponding path program 1 times [2020-11-28 03:21:30,649 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:21:30,650 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371658876] [2020-11-28 03:21:30,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:21:30,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:30,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 03:21:30,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:30,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-11-28 03:21:30,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:30,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-11-28 03:21:30,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:30,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:21:30,865 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371658876] [2020-11-28 03:21:30,865 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:21:30,866 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-28 03:21:30,866 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444222389] [2020-11-28 03:21:30,871 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-28 03:21:30,872 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:21:30,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-28 03:21:30,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-28 03:21:30,873 INFO L87 Difference]: Start difference. First operand 83 states and 105 transitions. Second operand 7 states. [2020-11-28 03:21:31,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:21:31,603 INFO L93 Difference]: Finished difference Result 119 states and 140 transitions. [2020-11-28 03:21:31,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-28 03:21:31,603 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 20 [2020-11-28 03:21:31,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:21:31,605 INFO L225 Difference]: With dead ends: 119 [2020-11-28 03:21:31,605 INFO L226 Difference]: Without dead ends: 119 [2020-11-28 03:21:31,605 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2020-11-28 03:21:31,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2020-11-28 03:21:31,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 87. [2020-11-28 03:21:31,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-11-28 03:21:31,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 111 transitions. [2020-11-28 03:21:31,616 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 111 transitions. Word has length 20 [2020-11-28 03:21:31,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:21:31,617 INFO L481 AbstractCegarLoop]: Abstraction has 87 states and 111 transitions. [2020-11-28 03:21:31,617 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-28 03:21:31,617 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 111 transitions. [2020-11-28 03:21:31,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-11-28 03:21:31,618 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:21:31,618 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:21:31,619 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-28 03:21:31,619 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr15ENSURES_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr14ASSERT_VIOLATIONMEMORY_FREE, mainErr9REQUIRES_VIOLATION, mainErr13ASSERT_VIOLATIONMEMORY_FREE, mainErr5REQUIRES_VIOLATION, mainErr12ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-11-28 03:21:31,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:21:31,620 INFO L82 PathProgramCache]: Analyzing trace with hash -1612932601, now seen corresponding path program 1 times [2020-11-28 03:21:31,620 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:21:31,620 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837892488] [2020-11-28 03:21:31,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:21:31,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:31,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 03:21:31,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:31,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-11-28 03:21:31,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:31,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-11-28 03:21:31,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:31,850 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:21:31,850 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837892488] [2020-11-28 03:21:31,851 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [380488551] [2020-11-28 03:21:31,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_73830632-2ef1-4278-9b87-7b1dd8badcf1/bin/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:21:31,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:31,925 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-28 03:21:31,932 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:21:32,333 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:21:32,334 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-11-28 03:21:32,334 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 13 [2020-11-28 03:21:32,334 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919909430] [2020-11-28 03:21:32,335 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-28 03:21:32,335 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:21:32,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-28 03:21:32,336 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2020-11-28 03:21:32,336 INFO L87 Difference]: Start difference. First operand 87 states and 111 transitions. Second operand 7 states. [2020-11-28 03:21:32,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:21:32,719 INFO L93 Difference]: Finished difference Result 140 states and 167 transitions. [2020-11-28 03:21:32,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-28 03:21:32,719 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-11-28 03:21:32,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:21:32,721 INFO L225 Difference]: With dead ends: 140 [2020-11-28 03:21:32,722 INFO L226 Difference]: Without dead ends: 140 [2020-11-28 03:21:32,722 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=67, Invalid=239, Unknown=0, NotChecked=0, Total=306 [2020-11-28 03:21:32,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-11-28 03:21:32,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 99. [2020-11-28 03:21:32,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-11-28 03:21:32,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 129 transitions. [2020-11-28 03:21:32,749 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 129 transitions. Word has length 23 [2020-11-28 03:21:32,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:21:32,753 INFO L481 AbstractCegarLoop]: Abstraction has 99 states and 129 transitions. [2020-11-28 03:21:32,753 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-28 03:21:32,753 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 129 transitions. [2020-11-28 03:21:32,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-11-28 03:21:32,754 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:21:32,754 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:21:32,978 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:21:32,979 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr15ENSURES_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr14ASSERT_VIOLATIONMEMORY_FREE, mainErr9REQUIRES_VIOLATION, mainErr13ASSERT_VIOLATIONMEMORY_FREE, mainErr5REQUIRES_VIOLATION, mainErr12ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-11-28 03:21:32,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:21:32,979 INFO L82 PathProgramCache]: Analyzing trace with hash -569899624, now seen corresponding path program 1 times [2020-11-28 03:21:32,979 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:21:32,980 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206999712] [2020-11-28 03:21:32,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:21:33,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:33,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 03:21:33,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:33,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-11-28 03:21:33,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:33,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-11-28 03:21:33,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:33,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-11-28 03:21:33,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:33,221 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-28 03:21:33,221 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206999712] [2020-11-28 03:21:33,222 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:21:33,222 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-11-28 03:21:33,222 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714228374] [2020-11-28 03:21:33,223 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-28 03:21:33,223 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:21:33,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-28 03:21:33,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-11-28 03:21:33,224 INFO L87 Difference]: Start difference. First operand 99 states and 129 transitions. Second operand 9 states. [2020-11-28 03:21:33,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:21:33,755 INFO L93 Difference]: Finished difference Result 105 states and 132 transitions. [2020-11-28 03:21:33,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-11-28 03:21:33,755 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-11-28 03:21:33,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:21:33,757 INFO L225 Difference]: With dead ends: 105 [2020-11-28 03:21:33,758 INFO L226 Difference]: Without dead ends: 105 [2020-11-28 03:21:33,758 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2020-11-28 03:21:33,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2020-11-28 03:21:33,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 76. [2020-11-28 03:21:33,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-11-28 03:21:33,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 91 transitions. [2020-11-28 03:21:33,772 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 91 transitions. Word has length 25 [2020-11-28 03:21:33,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:21:33,774 INFO L481 AbstractCegarLoop]: Abstraction has 76 states and 91 transitions. [2020-11-28 03:21:33,774 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-28 03:21:33,775 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 91 transitions. [2020-11-28 03:21:33,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-11-28 03:21:33,777 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:21:33,777 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:21:33,778 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-28 03:21:33,778 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr15ENSURES_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr14ASSERT_VIOLATIONMEMORY_FREE, mainErr9REQUIRES_VIOLATION, mainErr13ASSERT_VIOLATIONMEMORY_FREE, mainErr5REQUIRES_VIOLATION, mainErr12ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-11-28 03:21:33,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:21:33,780 INFO L82 PathProgramCache]: Analyzing trace with hash -487019175, now seen corresponding path program 1 times [2020-11-28 03:21:33,781 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:21:33,781 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358211097] [2020-11-28 03:21:33,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:21:33,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:33,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 03:21:33,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:33,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-11-28 03:21:33,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:33,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-11-28 03:21:33,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:33,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-11-28 03:21:33,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:33,954 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-11-28 03:21:33,956 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358211097] [2020-11-28 03:21:33,956 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:21:33,956 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-28 03:21:33,957 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132696683] [2020-11-28 03:21:33,957 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-28 03:21:33,958 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:21:33,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-28 03:21:33,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-11-28 03:21:33,959 INFO L87 Difference]: Start difference. First operand 76 states and 91 transitions. Second operand 7 states. [2020-11-28 03:21:34,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:21:34,345 INFO L93 Difference]: Finished difference Result 112 states and 135 transitions. [2020-11-28 03:21:34,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-28 03:21:34,346 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 26 [2020-11-28 03:21:34,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:21:34,347 INFO L225 Difference]: With dead ends: 112 [2020-11-28 03:21:34,347 INFO L226 Difference]: Without dead ends: 112 [2020-11-28 03:21:34,348 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-11-28 03:21:34,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2020-11-28 03:21:34,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 75. [2020-11-28 03:21:34,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-11-28 03:21:34,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 89 transitions. [2020-11-28 03:21:34,362 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 89 transitions. Word has length 26 [2020-11-28 03:21:34,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:21:34,363 INFO L481 AbstractCegarLoop]: Abstraction has 75 states and 89 transitions. [2020-11-28 03:21:34,363 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-28 03:21:34,363 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 89 transitions. [2020-11-28 03:21:34,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-11-28 03:21:34,368 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:21:34,368 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-11-28 03:21:34,368 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-28 03:21:34,370 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr15ENSURES_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr14ASSERT_VIOLATIONMEMORY_FREE, mainErr9REQUIRES_VIOLATION, mainErr13ASSERT_VIOLATIONMEMORY_FREE, mainErr5REQUIRES_VIOLATION, mainErr12ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-11-28 03:21:34,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:21:34,370 INFO L82 PathProgramCache]: Analyzing trace with hash 145092996, now seen corresponding path program 1 times [2020-11-28 03:21:34,371 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:21:34,372 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060350581] [2020-11-28 03:21:34,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:21:34,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:34,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 03:21:34,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:34,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-11-28 03:21:34,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:34,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-11-28 03:21:34,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:34,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-11-28 03:21:34,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:34,584 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-11-28 03:21:34,585 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060350581] [2020-11-28 03:21:34,585 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:21:34,585 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-11-28 03:21:34,585 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282269203] [2020-11-28 03:21:34,586 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-11-28 03:21:34,586 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:21:34,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-11-28 03:21:34,589 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2020-11-28 03:21:34,589 INFO L87 Difference]: Start difference. First operand 75 states and 89 transitions. Second operand 11 states. [2020-11-28 03:21:35,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:21:35,199 INFO L93 Difference]: Finished difference Result 79 states and 92 transitions. [2020-11-28 03:21:35,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-11-28 03:21:35,200 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 31 [2020-11-28 03:21:35,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:21:35,201 INFO L225 Difference]: With dead ends: 79 [2020-11-28 03:21:35,201 INFO L226 Difference]: Without dead ends: 79 [2020-11-28 03:21:35,201 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=67, Invalid=275, Unknown=0, NotChecked=0, Total=342 [2020-11-28 03:21:35,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-11-28 03:21:35,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2020-11-28 03:21:35,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-11-28 03:21:35,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 92 transitions. [2020-11-28 03:21:35,207 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 92 transitions. Word has length 31 [2020-11-28 03:21:35,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:21:35,208 INFO L481 AbstractCegarLoop]: Abstraction has 79 states and 92 transitions. [2020-11-28 03:21:35,208 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-11-28 03:21:35,208 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 92 transitions. [2020-11-28 03:21:35,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-11-28 03:21:35,209 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:21:35,209 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:21:35,209 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-28 03:21:35,210 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr15ENSURES_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr14ASSERT_VIOLATIONMEMORY_FREE, mainErr9REQUIRES_VIOLATION, mainErr13ASSERT_VIOLATIONMEMORY_FREE, mainErr5REQUIRES_VIOLATION, mainErr12ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-11-28 03:21:35,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:21:35,210 INFO L82 PathProgramCache]: Analyzing trace with hash -1105806991, now seen corresponding path program 1 times [2020-11-28 03:21:35,210 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:21:35,218 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613655198] [2020-11-28 03:21:35,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:21:35,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:35,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 03:21:35,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:35,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-11-28 03:21:35,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:35,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-11-28 03:21:35,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:35,382 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-28 03:21:35,383 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613655198] [2020-11-28 03:21:35,383 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2093586621] [2020-11-28 03:21:35,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_73830632-2ef1-4278-9b87-7b1dd8badcf1/bin/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:21:35,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:35,467 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-28 03:21:35,471 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:21:35,682 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:21:35,682 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 03:21:35,682 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7] total 15 [2020-11-28 03:21:35,682 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107105363] [2020-11-28 03:21:35,683 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-11-28 03:21:35,683 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:21:35,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-11-28 03:21:35,684 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2020-11-28 03:21:35,684 INFO L87 Difference]: Start difference. First operand 79 states and 92 transitions. Second operand 15 states. [2020-11-28 03:21:36,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:21:36,579 INFO L93 Difference]: Finished difference Result 80 states and 86 transitions. [2020-11-28 03:21:36,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-11-28 03:21:36,580 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 28 [2020-11-28 03:21:36,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:21:36,581 INFO L225 Difference]: With dead ends: 80 [2020-11-28 03:21:36,581 INFO L226 Difference]: Without dead ends: 80 [2020-11-28 03:21:36,582 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=117, Invalid=483, Unknown=0, NotChecked=0, Total=600 [2020-11-28 03:21:36,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-11-28 03:21:36,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 70. [2020-11-28 03:21:36,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-11-28 03:21:36,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 78 transitions. [2020-11-28 03:21:36,596 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 78 transitions. Word has length 28 [2020-11-28 03:21:36,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:21:36,597 INFO L481 AbstractCegarLoop]: Abstraction has 70 states and 78 transitions. [2020-11-28 03:21:36,597 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-11-28 03:21:36,597 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 78 transitions. [2020-11-28 03:21:36,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-11-28 03:21:36,598 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:21:36,598 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-11-28 03:21:36,818 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:21:36,819 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr15ENSURES_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr14ASSERT_VIOLATIONMEMORY_FREE, mainErr9REQUIRES_VIOLATION, mainErr13ASSERT_VIOLATIONMEMORY_FREE, mainErr5REQUIRES_VIOLATION, mainErr12ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-11-28 03:21:36,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:21:36,819 INFO L82 PathProgramCache]: Analyzing trace with hash 708133075, now seen corresponding path program 1 times [2020-11-28 03:21:36,819 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:21:36,820 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102789999] [2020-11-28 03:21:36,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:21:36,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:36,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 03:21:36,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:36,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-11-28 03:21:36,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:36,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-11-28 03:21:36,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:36,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-11-28 03:21:36,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:36,997 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-11-28 03:21:36,998 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102789999] [2020-11-28 03:21:36,998 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2054869535] [2020-11-28 03:21:36,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_73830632-2ef1-4278-9b87-7b1dd8badcf1/bin/uautomizer/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:21:37,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:37,068 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-28 03:21:37,073 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:21:37,371 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:21:37,371 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-11-28 03:21:37,372 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 14 [2020-11-28 03:21:37,372 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94363767] [2020-11-28 03:21:37,372 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-28 03:21:37,372 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:21:37,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-28 03:21:37,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2020-11-28 03:21:37,374 INFO L87 Difference]: Start difference. First operand 70 states and 78 transitions. Second operand 8 states. [2020-11-28 03:21:37,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:21:37,784 INFO L93 Difference]: Finished difference Result 93 states and 96 transitions. [2020-11-28 03:21:37,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-28 03:21:37,784 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 30 [2020-11-28 03:21:37,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:21:37,785 INFO L225 Difference]: With dead ends: 93 [2020-11-28 03:21:37,786 INFO L226 Difference]: Without dead ends: 93 [2020-11-28 03:21:37,786 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=93, Invalid=327, Unknown=0, NotChecked=0, Total=420 [2020-11-28 03:21:37,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-11-28 03:21:37,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 60. [2020-11-28 03:21:37,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-11-28 03:21:37,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 63 transitions. [2020-11-28 03:21:37,792 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 63 transitions. Word has length 30 [2020-11-28 03:21:37,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:21:37,795 INFO L481 AbstractCegarLoop]: Abstraction has 60 states and 63 transitions. [2020-11-28 03:21:37,795 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-28 03:21:37,795 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 63 transitions. [2020-11-28 03:21:37,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-11-28 03:21:37,806 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:21:37,806 INFO L422 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, 1, 1, 1] [2020-11-28 03:21:38,018 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-11-28 03:21:38,019 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr15ENSURES_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr14ASSERT_VIOLATIONMEMORY_FREE, mainErr9REQUIRES_VIOLATION, mainErr13ASSERT_VIOLATIONMEMORY_FREE, mainErr5REQUIRES_VIOLATION, mainErr12ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-11-28 03:21:38,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:21:38,019 INFO L82 PathProgramCache]: Analyzing trace with hash 1809388562, now seen corresponding path program 1 times [2020-11-28 03:21:38,020 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:21:38,020 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486109096] [2020-11-28 03:21:38,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:21:38,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:38,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 03:21:38,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:38,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-11-28 03:21:38,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:38,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-11-28 03:21:38,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:38,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-11-28 03:21:38,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:38,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-11-28 03:21:38,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:38,271 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-11-28 03:21:38,272 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486109096] [2020-11-28 03:21:38,272 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:21:38,272 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-11-28 03:21:38,273 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381270353] [2020-11-28 03:21:38,273 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-11-28 03:21:38,274 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:21:38,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-11-28 03:21:38,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-11-28 03:21:38,275 INFO L87 Difference]: Start difference. First operand 60 states and 63 transitions. Second operand 11 states. [2020-11-28 03:21:38,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:21:38,950 INFO L93 Difference]: Finished difference Result 57 states and 60 transitions. [2020-11-28 03:21:38,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-11-28 03:21:38,950 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 40 [2020-11-28 03:21:38,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:21:38,953 INFO L225 Difference]: With dead ends: 57 [2020-11-28 03:21:38,953 INFO L226 Difference]: Without dead ends: 57 [2020-11-28 03:21:38,953 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=276, Unknown=0, NotChecked=0, Total=342 [2020-11-28 03:21:38,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-11-28 03:21:38,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2020-11-28 03:21:38,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-11-28 03:21:38,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 60 transitions. [2020-11-28 03:21:38,957 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 60 transitions. Word has length 40 [2020-11-28 03:21:38,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:21:38,958 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 60 transitions. [2020-11-28 03:21:38,958 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-11-28 03:21:38,958 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 60 transitions. [2020-11-28 03:21:38,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-11-28 03:21:38,965 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:21:38,965 INFO L422 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] [2020-11-28 03:21:38,965 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-11-28 03:21:38,966 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr15ENSURES_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr14ASSERT_VIOLATIONMEMORY_FREE, mainErr9REQUIRES_VIOLATION, mainErr13ASSERT_VIOLATIONMEMORY_FREE, mainErr5REQUIRES_VIOLATION, mainErr12ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-11-28 03:21:38,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:21:38,966 INFO L82 PathProgramCache]: Analyzing trace with hash -1364625355, now seen corresponding path program 1 times [2020-11-28 03:21:38,967 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:21:38,970 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787782132] [2020-11-28 03:21:38,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:21:38,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:39,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 03:21:39,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:39,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-11-28 03:21:39,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:39,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-11-28 03:21:39,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:39,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-11-28 03:21:39,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:39,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-11-28 03:21:39,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:39,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-11-28 03:21:39,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:39,115 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-11-28 03:21:39,116 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787782132] [2020-11-28 03:21:39,116 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [648576126] [2020-11-28 03:21:39,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_73830632-2ef1-4278-9b87-7b1dd8badcf1/bin/uautomizer/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:21:39,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:39,199 INFO L263 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-28 03:21:39,202 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:21:39,275 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-11-28 03:21:39,275 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-11-28 03:21:39,276 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 11 [2020-11-28 03:21:39,276 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549721960] [2020-11-28 03:21:39,276 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 03:21:39,277 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:21:39,277 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 03:21:39,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-11-28 03:21:39,278 INFO L87 Difference]: Start difference. First operand 57 states and 60 transitions. Second operand 6 states. [2020-11-28 03:21:39,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:21:39,390 INFO L93 Difference]: Finished difference Result 77 states and 81 transitions. [2020-11-28 03:21:39,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 03:21:39,391 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 44 [2020-11-28 03:21:39,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:21:39,392 INFO L225 Difference]: With dead ends: 77 [2020-11-28 03:21:39,392 INFO L226 Difference]: Without dead ends: 77 [2020-11-28 03:21:39,392 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2020-11-28 03:21:39,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-11-28 03:21:39,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 68. [2020-11-28 03:21:39,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-11-28 03:21:39,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 73 transitions. [2020-11-28 03:21:39,398 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 73 transitions. Word has length 44 [2020-11-28 03:21:39,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:21:39,398 INFO L481 AbstractCegarLoop]: Abstraction has 68 states and 73 transitions. [2020-11-28 03:21:39,402 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 03:21:39,402 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 73 transitions. [2020-11-28 03:21:39,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-11-28 03:21:39,403 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:21:39,403 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-11-28 03:21:39,618 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:21:39,619 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr15ENSURES_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr14ASSERT_VIOLATIONMEMORY_FREE, mainErr9REQUIRES_VIOLATION, mainErr13ASSERT_VIOLATIONMEMORY_FREE, mainErr5REQUIRES_VIOLATION, mainErr12ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-11-28 03:21:39,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:21:39,619 INFO L82 PathProgramCache]: Analyzing trace with hash 646285478, now seen corresponding path program 1 times [2020-11-28 03:21:39,620 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:21:39,620 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667011343] [2020-11-28 03:21:39,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:21:39,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:39,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 03:21:39,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:39,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-11-28 03:21:39,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:39,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-11-28 03:21:39,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:39,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-11-28 03:21:39,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:39,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-11-28 03:21:39,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:39,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-11-28 03:21:39,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:39,759 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-11-28 03:21:39,760 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667011343] [2020-11-28 03:21:39,760 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:21:39,760 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-28 03:21:39,761 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231033257] [2020-11-28 03:21:39,761 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 03:21:39,761 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:21:39,762 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 03:21:39,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-28 03:21:39,762 INFO L87 Difference]: Start difference. First operand 68 states and 73 transitions. Second operand 6 states. [2020-11-28 03:21:40,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:21:40,002 INFO L93 Difference]: Finished difference Result 67 states and 72 transitions. [2020-11-28 03:21:40,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-28 03:21:40,002 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 45 [2020-11-28 03:21:40,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:21:40,003 INFO L225 Difference]: With dead ends: 67 [2020-11-28 03:21:40,003 INFO L226 Difference]: Without dead ends: 67 [2020-11-28 03:21:40,003 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-11-28 03:21:40,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-11-28 03:21:40,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2020-11-28 03:21:40,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-11-28 03:21:40,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 72 transitions. [2020-11-28 03:21:40,008 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 72 transitions. Word has length 45 [2020-11-28 03:21:40,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:21:40,009 INFO L481 AbstractCegarLoop]: Abstraction has 67 states and 72 transitions. [2020-11-28 03:21:40,009 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 03:21:40,009 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 72 transitions. [2020-11-28 03:21:40,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-11-28 03:21:40,010 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:21:40,011 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-11-28 03:21:40,011 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-11-28 03:21:40,011 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr15ENSURES_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr14ASSERT_VIOLATIONMEMORY_FREE, mainErr9REQUIRES_VIOLATION, mainErr13ASSERT_VIOLATIONMEMORY_FREE, mainErr5REQUIRES_VIOLATION, mainErr12ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-11-28 03:21:40,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:21:40,012 INFO L82 PathProgramCache]: Analyzing trace with hash -1689910167, now seen corresponding path program 1 times [2020-11-28 03:21:40,012 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:21:40,012 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419953996] [2020-11-28 03:21:40,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:21:40,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:40,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 03:21:40,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:40,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-11-28 03:21:40,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:40,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-11-28 03:21:40,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:40,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-11-28 03:21:40,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:40,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-11-28 03:21:40,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:40,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-11-28 03:21:40,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:40,170 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-11-28 03:21:40,170 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419953996] [2020-11-28 03:21:40,170 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:21:40,170 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-28 03:21:40,171 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7864284] [2020-11-28 03:21:40,171 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-28 03:21:40,171 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:21:40,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-28 03:21:40,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-11-28 03:21:40,172 INFO L87 Difference]: Start difference. First operand 67 states and 72 transitions. Second operand 7 states. [2020-11-28 03:21:40,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:21:40,420 INFO L93 Difference]: Finished difference Result 66 states and 71 transitions. [2020-11-28 03:21:40,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-28 03:21:40,420 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 47 [2020-11-28 03:21:40,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:21:40,421 INFO L225 Difference]: With dead ends: 66 [2020-11-28 03:21:40,421 INFO L226 Difference]: Without dead ends: 45 [2020-11-28 03:21:40,422 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2020-11-28 03:21:40,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-11-28 03:21:40,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2020-11-28 03:21:40,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-11-28 03:21:40,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 47 transitions. [2020-11-28 03:21:40,426 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 47 transitions. Word has length 47 [2020-11-28 03:21:40,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:21:40,427 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 47 transitions. [2020-11-28 03:21:40,427 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-28 03:21:40,427 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 47 transitions. [2020-11-28 03:21:40,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-11-28 03:21:40,428 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:21:40,428 INFO L422 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] [2020-11-28 03:21:40,429 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-11-28 03:21:40,429 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr15ENSURES_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr14ASSERT_VIOLATIONMEMORY_FREE, mainErr9REQUIRES_VIOLATION, mainErr13ASSERT_VIOLATIONMEMORY_FREE, mainErr5REQUIRES_VIOLATION, mainErr12ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-11-28 03:21:40,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:21:40,429 INFO L82 PathProgramCache]: Analyzing trace with hash -130424529, now seen corresponding path program 1 times [2020-11-28 03:21:40,430 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:21:40,430 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930636534] [2020-11-28 03:21:40,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:21:40,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:40,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 03:21:40,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:40,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-11-28 03:21:40,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:40,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-11-28 03:21:40,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:40,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-11-28 03:21:40,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:40,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-11-28 03:21:40,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:40,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-11-28 03:21:40,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:40,663 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-11-28 03:21:40,663 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930636534] [2020-11-28 03:21:40,663 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1707107234] [2020-11-28 03:21:40,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_73830632-2ef1-4278-9b87-7b1dd8badcf1/bin/uautomizer/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:21:40,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:40,766 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 10 conjunts are in the unsatisfiable core [2020-11-28 03:21:40,775 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:21:41,246 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-11-28 03:21:41,247 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 03:21:41,247 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 16 [2020-11-28 03:21:41,248 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762805663] [2020-11-28 03:21:41,250 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-11-28 03:21:41,250 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:21:41,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-11-28 03:21:41,251 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2020-11-28 03:21:41,251 INFO L87 Difference]: Start difference. First operand 45 states and 47 transitions. Second operand 17 states. [2020-11-28 03:21:42,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:21:42,018 INFO L93 Difference]: Finished difference Result 58 states and 62 transitions. [2020-11-28 03:21:42,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-11-28 03:21:42,027 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 48 [2020-11-28 03:21:42,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:21:42,028 INFO L225 Difference]: With dead ends: 58 [2020-11-28 03:21:42,028 INFO L226 Difference]: Without dead ends: 58 [2020-11-28 03:21:42,028 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 47 SyntacticMatches, 5 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=133, Invalid=569, Unknown=0, NotChecked=0, Total=702 [2020-11-28 03:21:42,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-11-28 03:21:42,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 51. [2020-11-28 03:21:42,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-11-28 03:21:42,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 54 transitions. [2020-11-28 03:21:42,032 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 54 transitions. Word has length 48 [2020-11-28 03:21:42,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:21:42,032 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 54 transitions. [2020-11-28 03:21:42,032 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-11-28 03:21:42,032 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 54 transitions. [2020-11-28 03:21:42,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-11-28 03:21:42,033 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:21:42,033 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-11-28 03:21:42,246 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2020-11-28 03:21:42,247 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr15ENSURES_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr14ASSERT_VIOLATIONMEMORY_FREE, mainErr9REQUIRES_VIOLATION, mainErr13ASSERT_VIOLATIONMEMORY_FREE, mainErr5REQUIRES_VIOLATION, mainErr12ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-11-28 03:21:42,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:21:42,247 INFO L82 PathProgramCache]: Analyzing trace with hash -337131664, now seen corresponding path program 2 times [2020-11-28 03:21:42,247 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:21:42,248 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951242127] [2020-11-28 03:21:42,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:21:42,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:42,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 03:21:42,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:42,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-11-28 03:21:42,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:42,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-11-28 03:21:42,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:42,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-11-28 03:21:42,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:42,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-11-28 03:21:42,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:42,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-11-28 03:21:42,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:42,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-11-28 03:21:42,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:42,420 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 3 proven. 8 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-11-28 03:21:42,421 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951242127] [2020-11-28 03:21:42,422 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1003140956] [2020-11-28 03:21:42,423 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_73830632-2ef1-4278-9b87-7b1dd8badcf1/bin/uautomizer/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:21:42,499 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-28 03:21:42,500 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-28 03:21:42,501 INFO L263 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-28 03:21:42,504 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:21:42,632 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-11-28 03:21:42,633 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 03:21:42,633 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8] total 15 [2020-11-28 03:21:42,633 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628998715] [2020-11-28 03:21:42,634 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-11-28 03:21:42,634 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:21:42,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-11-28 03:21:42,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2020-11-28 03:21:42,635 INFO L87 Difference]: Start difference. First operand 51 states and 54 transitions. Second operand 15 states. [2020-11-28 03:21:43,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:21:43,023 INFO L93 Difference]: Finished difference Result 77 states and 84 transitions. [2020-11-28 03:21:43,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-11-28 03:21:43,023 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 58 [2020-11-28 03:21:43,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:21:43,024 INFO L225 Difference]: With dead ends: 77 [2020-11-28 03:21:43,024 INFO L226 Difference]: Without dead ends: 58 [2020-11-28 03:21:43,024 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=83, Invalid=297, Unknown=0, NotChecked=0, Total=380 [2020-11-28 03:21:43,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-11-28 03:21:43,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 55. [2020-11-28 03:21:43,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-11-28 03:21:43,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 58 transitions. [2020-11-28 03:21:43,030 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 58 transitions. Word has length 58 [2020-11-28 03:21:43,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:21:43,030 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 58 transitions. [2020-11-28 03:21:43,030 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-11-28 03:21:43,030 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 58 transitions. [2020-11-28 03:21:43,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-11-28 03:21:43,031 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:21:43,031 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:21:43,238 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:21:43,239 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr15ENSURES_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr14ASSERT_VIOLATIONMEMORY_FREE, mainErr9REQUIRES_VIOLATION, mainErr13ASSERT_VIOLATIONMEMORY_FREE, mainErr5REQUIRES_VIOLATION, mainErr12ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-11-28 03:21:43,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:21:43,239 INFO L82 PathProgramCache]: Analyzing trace with hash 484963050, now seen corresponding path program 3 times [2020-11-28 03:21:43,239 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:21:43,239 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577366421] [2020-11-28 03:21:43,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:21:43,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:43,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 03:21:43,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:43,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-11-28 03:21:43,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:43,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-11-28 03:21:43,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:43,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-11-28 03:21:43,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:43,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-11-28 03:21:43,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:43,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-11-28 03:21:43,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:43,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-11-28 03:21:43,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:43,466 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-11-28 03:21:43,466 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577366421] [2020-11-28 03:21:43,466 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1992316321] [2020-11-28 03:21:43,466 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_73830632-2ef1-4278-9b87-7b1dd8badcf1/bin/uautomizer/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:21:43,541 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-11-28 03:21:43,541 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-28 03:21:43,542 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-28 03:21:43,551 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:21:43,778 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-11-28 03:21:43,778 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 03:21:43,779 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7] total 17 [2020-11-28 03:21:43,779 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911472320] [2020-11-28 03:21:43,780 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-11-28 03:21:43,780 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:21:43,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-11-28 03:21:43,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=264, Unknown=0, NotChecked=0, Total=306 [2020-11-28 03:21:43,781 INFO L87 Difference]: Start difference. First operand 55 states and 58 transitions. Second operand 18 states. [2020-11-28 03:21:44,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:21:44,643 INFO L93 Difference]: Finished difference Result 64 states and 69 transitions. [2020-11-28 03:21:44,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-11-28 03:21:44,643 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 62 [2020-11-28 03:21:44,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:21:44,643 INFO L225 Difference]: With dead ends: 64 [2020-11-28 03:21:44,644 INFO L226 Difference]: Without dead ends: 0 [2020-11-28 03:21:44,644 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=179, Invalid=751, Unknown=0, NotChecked=0, Total=930 [2020-11-28 03:21:44,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-28 03:21:44,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-28 03:21:44,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-28 03:21:44,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-28 03:21:44,645 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 62 [2020-11-28 03:21:44,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:21:44,645 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 03:21:44,645 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-11-28 03:21:44,645 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-28 03:21:44,645 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-28 03:21:44,846 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2020-11-28 03:21:44,849 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 03:21:44 BoogieIcfgContainer [2020-11-28 03:21:44,849 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 03:21:44,850 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 03:21:44,850 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 03:21:44,850 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 03:21:44,851 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:21:28" (3/4) ... [2020-11-28 03:21:44,853 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-28 03:21:44,859 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure reach_error [2020-11-28 03:21:44,859 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2020-11-28 03:21:44,859 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2020-11-28 03:21:44,859 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2020-11-28 03:21:44,859 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2020-11-28 03:21:44,859 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure #Ultimate.meminit [2020-11-28 03:21:44,869 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges [2020-11-28 03:21:44,870 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2020-11-28 03:21:44,870 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2020-11-28 03:21:44,870 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 03:21:44,910 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_73830632-2ef1-4278-9b87-7b1dd8badcf1/bin/uautomizer/witness.graphml [2020-11-28 03:21:44,910 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 03:21:44,912 INFO L168 Benchmark]: Toolchain (without parser) took 17729.65 ms. Allocated memory was 90.2 MB in the beginning and 247.5 MB in the end (delta: 157.3 MB). Free memory was 60.4 MB in the beginning and 184.4 MB in the end (delta: -124.0 MB). Peak memory consumption was 32.3 MB. Max. memory is 16.1 GB. [2020-11-28 03:21:44,912 INFO L168 Benchmark]: CDTParser took 0.69 ms. Allocated memory is still 90.2 MB. Free memory is still 47.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:21:44,913 INFO L168 Benchmark]: CACSL2BoogieTranslator took 282.27 ms. Allocated memory was 90.2 MB in the beginning and 140.5 MB in the end (delta: 50.3 MB). Free memory was 60.1 MB in the beginning and 117.0 MB in the end (delta: -56.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-28 03:21:44,913 INFO L168 Benchmark]: Boogie Preprocessor took 50.17 ms. Allocated memory is still 140.5 MB. Free memory was 117.0 MB in the beginning and 115.3 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:21:44,914 INFO L168 Benchmark]: RCFGBuilder took 681.58 ms. Allocated memory is still 140.5 MB. Free memory was 115.3 MB in the beginning and 94.4 MB in the end (delta: 20.9 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. [2020-11-28 03:21:44,914 INFO L168 Benchmark]: TraceAbstraction took 16647.98 ms. Allocated memory was 140.5 MB in the beginning and 247.5 MB in the end (delta: 107.0 MB). Free memory was 94.0 MB in the beginning and 187.3 MB in the end (delta: -93.3 MB). Peak memory consumption was 16.5 MB. Max. memory is 16.1 GB. [2020-11-28 03:21:44,915 INFO L168 Benchmark]: Witness Printer took 60.22 ms. Allocated memory is still 247.5 MB. Free memory was 187.3 MB in the beginning and 184.4 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:21:44,917 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.69 ms. Allocated memory is still 90.2 MB. Free memory is still 47.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 282.27 ms. Allocated memory was 90.2 MB in the beginning and 140.5 MB in the end (delta: 50.3 MB). Free memory was 60.1 MB in the beginning and 117.0 MB in the end (delta: -56.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 50.17 ms. Allocated memory is still 140.5 MB. Free memory was 117.0 MB in the beginning and 115.3 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 681.58 ms. Allocated memory is still 140.5 MB. Free memory was 115.3 MB in the beginning and 94.4 MB in the end (delta: 20.9 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 16647.98 ms. Allocated memory was 140.5 MB in the beginning and 247.5 MB in the end (delta: 107.0 MB). Free memory was 94.0 MB in the beginning and 187.3 MB in the end (delta: -93.3 MB). Peak memory consumption was 16.5 MB. Max. memory is 16.1 GB. * Witness Printer took 60.22 ms. Allocated memory is still 247.5 MB. Free memory was 187.3 MB in the beginning and 184.4 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 16]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 46]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 48]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 46]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 48]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 43]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 48]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 43]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 43]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 35]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 35]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 43]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 46]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 46]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 35]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 35]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - AllSpecificationsHoldResult: All specifications hold 17 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 66 locations, 17 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 16.5s, OverallIterations: 17, TraceHistogramMax: 3, AutomataDifference: 8.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 611 SDtfs, 1581 SDslu, 1146 SDs, 0 SdLazy, 3639 SolverSat, 644 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 646 GetRequests, 396 SyntacticMatches, 7 SemanticMatches, 243 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 580 ImplicationChecksByTransitivity, 6.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=99occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 17 MinimizatonAttempts, 219 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 4.7s InterpolantComputationTime, 877 NumberOfCodeBlocks, 860 NumberOfCodeBlocksAsserted, 26 NumberOfCheckSat, 853 ConstructedInterpolants, 16 QuantifiedInterpolants, 180966 SizeOfPredicates, 20 NumberOfNonLiveVariables, 1256 ConjunctsInSsa, 54 ConjunctsInUnsatCore, 24 InterpolantComputations, 13 PerfectInterpolantSequences, 188/230 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...