./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/list-ext-properties/list-ext_2.i --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_885ac3fd-997b-4b23-8951-1b6c4851bedc/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_885ac3fd-997b-4b23-8951-1b6c4851bedc/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_885ac3fd-997b-4b23-8951-1b6c4851bedc/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_885ac3fd-997b-4b23-8951-1b6c4851bedc/bin/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-ext-properties/list-ext_2.i -s /tmp/vcloud-vcloud-master/worker/run_dir_885ac3fd-997b-4b23-8951-1b6c4851bedc/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_885ac3fd-997b-4b23-8951-1b6c4851bedc/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 d6c9e5ba66547a8817cc7b16e9df45177efa4b55 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_885ac3fd-997b-4b23-8951-1b6c4851bedc/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_885ac3fd-997b-4b23-8951-1b6c4851bedc/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_885ac3fd-997b-4b23-8951-1b6c4851bedc/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_885ac3fd-997b-4b23-8951-1b6c4851bedc/bin/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-ext-properties/list-ext_2.i -s /tmp/vcloud-vcloud-master/worker/run_dir_885ac3fd-997b-4b23-8951-1b6c4851bedc/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_885ac3fd-997b-4b23-8951-1b6c4851bedc/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 d6c9e5ba66547a8817cc7b16e9df45177efa4b55 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-30 01:28:44,541 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 01:28:44,547 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 01:28:44,634 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 01:28:44,636 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 01:28:44,644 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 01:28:44,650 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 01:28:44,656 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 01:28:44,661 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 01:28:44,670 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 01:28:44,672 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 01:28:44,675 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 01:28:44,676 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 01:28:44,682 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 01:28:44,684 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 01:28:44,688 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 01:28:44,691 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 01:28:44,693 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 01:28:44,702 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 01:28:44,714 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 01:28:44,717 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 01:28:44,719 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 01:28:44,723 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 01:28:44,725 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 01:28:44,738 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 01:28:44,739 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 01:28:44,740 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 01:28:44,743 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 01:28:44,745 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 01:28:44,747 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 01:28:44,747 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 01:28:44,749 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 01:28:44,752 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 01:28:44,754 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 01:28:44,757 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 01:28:44,757 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 01:28:44,759 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 01:28:44,759 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 01:28:44,760 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 01:28:44,761 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 01:28:44,763 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 01:28:44,768 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_885ac3fd-997b-4b23-8951-1b6c4851bedc/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2020-11-30 01:28:44,841 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 01:28:44,842 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 01:28:44,845 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-30 01:28:44,845 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-30 01:28:44,845 INFO L138 SettingsManager]: * Use SBE=true [2020-11-30 01:28:44,846 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 01:28:44,846 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 01:28:44,847 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-30 01:28:44,847 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 01:28:44,847 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 01:28:44,849 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 01:28:44,849 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-11-30 01:28:44,850 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-11-30 01:28:44,850 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-11-30 01:28:44,850 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 01:28:44,851 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-30 01:28:44,851 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 01:28:44,851 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 01:28:44,852 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 01:28:44,852 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-30 01:28:44,852 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 01:28:44,853 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 01:28:44,853 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 01:28:44,863 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 01:28:44,864 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 01:28:44,864 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-30 01:28:44,864 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-30 01:28:44,865 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 01:28:44,865 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_885ac3fd-997b-4b23-8951-1b6c4851bedc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_885ac3fd-997b-4b23-8951-1b6c4851bedc/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d6c9e5ba66547a8817cc7b16e9df45177efa4b55 [2020-11-30 01:28:45,266 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 01:28:45,320 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 01:28:45,326 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 01:28:45,329 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 01:28:45,330 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 01:28:45,332 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_885ac3fd-997b-4b23-8951-1b6c4851bedc/bin/uautomizer/../../sv-benchmarks/c/list-ext-properties/list-ext_2.i [2020-11-30 01:28:45,439 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_885ac3fd-997b-4b23-8951-1b6c4851bedc/bin/uautomizer/data/fd662b9c2/c29bf01b312c4872b1a88275c50f41a9/FLAGbf5871eb5 [2020-11-30 01:28:46,262 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 01:28:46,263 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_885ac3fd-997b-4b23-8951-1b6c4851bedc/sv-benchmarks/c/list-ext-properties/list-ext_2.i [2020-11-30 01:28:46,283 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_885ac3fd-997b-4b23-8951-1b6c4851bedc/bin/uautomizer/data/fd662b9c2/c29bf01b312c4872b1a88275c50f41a9/FLAGbf5871eb5 [2020-11-30 01:28:46,518 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_885ac3fd-997b-4b23-8951-1b6c4851bedc/bin/uautomizer/data/fd662b9c2/c29bf01b312c4872b1a88275c50f41a9 [2020-11-30 01:28:46,537 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 01:28:46,541 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-11-30 01:28:46,544 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 01:28:46,545 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 01:28:46,553 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 01:28:46,556 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 01:28:46" (1/1) ... [2020-11-30 01:28:46,559 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29deb557 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:28:46, skipping insertion in model container [2020-11-30 01:28:46,560 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 01:28:46" (1/1) ... [2020-11-30 01:28:46,583 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 01:28:46,680 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 01:28:47,295 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 01:28:47,314 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 01:28:47,429 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 01:28:47,544 INFO L208 MainTranslator]: Completed translation [2020-11-30 01:28:47,545 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:28:47 WrapperNode [2020-11-30 01:28:47,546 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 01:28:47,548 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 01:28:47,548 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 01:28:47,548 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 01:28:47,567 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:28:47" (1/1) ... [2020-11-30 01:28:47,568 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:28:47" (1/1) ... [2020-11-30 01:28:47,621 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:28:47" (1/1) ... [2020-11-30 01:28:47,621 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:28:47" (1/1) ... [2020-11-30 01:28:47,669 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:28:47" (1/1) ... [2020-11-30 01:28:47,687 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:28:47" (1/1) ... [2020-11-30 01:28:47,701 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:28:47" (1/1) ... [2020-11-30 01:28:47,719 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 01:28:47,720 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 01:28:47,722 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 01:28:47,723 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 01:28:47,724 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:28:47" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_885ac3fd-997b-4b23-8951-1b6c4851bedc/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 [2020-11-30 01:28:47,836 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-30 01:28:47,837 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 01:28:47,838 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-30 01:28:47,838 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-11-30 01:28:47,839 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-11-30 01:28:47,839 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2020-11-30 01:28:47,840 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2020-11-30 01:28:47,841 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2020-11-30 01:28:47,841 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-11-30 01:28:47,841 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-30 01:28:47,843 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-30 01:28:47,843 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-30 01:28:47,844 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-11-30 01:28:47,844 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-11-30 01:28:47,845 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-30 01:28:47,845 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 01:28:47,848 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-11-30 01:28:47,849 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2020-11-30 01:28:47,849 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-11-30 01:28:47,850 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-11-30 01:28:47,850 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-11-30 01:28:47,850 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-11-30 01:28:47,851 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-11-30 01:28:47,851 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-11-30 01:28:47,851 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-11-30 01:28:47,852 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-11-30 01:28:47,852 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-11-30 01:28:47,852 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-11-30 01:28:47,853 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-11-30 01:28:47,853 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-11-30 01:28:47,854 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-11-30 01:28:47,854 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-11-30 01:28:47,854 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-11-30 01:28:47,854 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-11-30 01:28:47,855 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-11-30 01:28:47,855 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-11-30 01:28:47,856 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2020-11-30 01:28:47,856 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2020-11-30 01:28:47,856 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2020-11-30 01:28:47,857 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-11-30 01:28:47,857 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-11-30 01:28:47,857 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-11-30 01:28:47,858 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-11-30 01:28:47,858 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-11-30 01:28:47,858 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-11-30 01:28:47,859 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-11-30 01:28:47,859 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-11-30 01:28:47,859 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-11-30 01:28:47,860 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-11-30 01:28:47,860 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-11-30 01:28:47,860 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-11-30 01:28:47,861 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-11-30 01:28:47,861 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-11-30 01:28:47,862 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-11-30 01:28:47,862 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-11-30 01:28:47,862 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-11-30 01:28:47,864 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-11-30 01:28:47,864 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-11-30 01:28:47,865 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-11-30 01:28:47,865 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-11-30 01:28:47,866 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-11-30 01:28:47,866 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-11-30 01:28:47,867 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-11-30 01:28:47,867 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-11-30 01:28:47,868 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-11-30 01:28:47,868 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-11-30 01:28:47,868 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-11-30 01:28:47,869 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-11-30 01:28:47,869 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-11-30 01:28:47,870 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-11-30 01:28:47,870 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-11-30 01:28:47,871 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-11-30 01:28:47,873 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-11-30 01:28:47,873 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-11-30 01:28:47,874 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-11-30 01:28:47,875 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-11-30 01:28:47,875 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-11-30 01:28:47,875 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-11-30 01:28:47,876 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-11-30 01:28:47,876 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-11-30 01:28:47,876 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-11-30 01:28:47,876 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-11-30 01:28:47,878 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-11-30 01:28:47,878 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-11-30 01:28:47,878 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-11-30 01:28:47,879 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-11-30 01:28:47,879 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-11-30 01:28:47,880 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-11-30 01:28:47,880 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-11-30 01:28:47,880 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-11-30 01:28:47,881 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-11-30 01:28:47,881 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-11-30 01:28:47,881 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-11-30 01:28:47,881 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-11-30 01:28:47,882 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-11-30 01:28:47,882 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-11-30 01:28:47,882 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-11-30 01:28:47,883 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-11-30 01:28:47,883 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-11-30 01:28:47,883 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-11-30 01:28:47,884 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-11-30 01:28:47,884 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-11-30 01:28:47,884 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-11-30 01:28:47,884 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-11-30 01:28:47,885 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-11-30 01:28:47,885 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-11-30 01:28:47,885 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-11-30 01:28:47,886 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-11-30 01:28:47,886 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-11-30 01:28:47,886 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-11-30 01:28:47,887 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-11-30 01:28:47,887 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-11-30 01:28:47,887 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-11-30 01:28:47,887 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-11-30 01:28:47,888 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-11-30 01:28:47,889 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-11-30 01:28:47,889 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-11-30 01:28:47,889 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-11-30 01:28:47,890 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-11-30 01:28:47,890 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-11-30 01:28:47,890 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-11-30 01:28:47,891 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-11-30 01:28:47,891 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-11-30 01:28:47,891 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-11-30 01:28:47,891 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-11-30 01:28:47,892 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-30 01:28:47,892 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-11-30 01:28:47,893 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-30 01:28:47,893 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-11-30 01:28:47,898 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-11-30 01:28:47,900 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-30 01:28:47,901 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-30 01:28:47,905 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-30 01:28:47,906 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-30 01:28:47,906 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 01:28:48,897 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-11-30 01:28:49,700 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 01:28:49,700 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-11-30 01:28:49,703 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:28:49 BoogieIcfgContainer [2020-11-30 01:28:49,704 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 01:28:49,706 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 01:28:49,706 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 01:28:49,712 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 01:28:49,713 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 01:28:46" (1/3) ... [2020-11-30 01:28:49,714 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66a39ef2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 01:28:49, skipping insertion in model container [2020-11-30 01:28:49,714 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:28:47" (2/3) ... [2020-11-30 01:28:49,715 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66a39ef2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 01:28:49, skipping insertion in model container [2020-11-30 01:28:49,715 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:28:49" (3/3) ... [2020-11-30 01:28:49,717 INFO L111 eAbstractionObserver]: Analyzing ICFG list-ext_2.i [2020-11-30 01:28:49,734 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 01:28:49,741 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 38 error locations. [2020-11-30 01:28:49,759 INFO L253 AbstractCegarLoop]: Starting to check reachability of 38 error locations. [2020-11-30 01:28:49,789 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 01:28:49,789 INFO L378 AbstractCegarLoop]: Hoare is false [2020-11-30 01:28:49,789 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 01:28:49,790 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 01:28:49,790 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 01:28:49,790 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 01:28:49,790 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 01:28:49,790 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 01:28:49,815 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states. [2020-11-30 01:28:49,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-30 01:28:49,826 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:28:49,827 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:28:49,828 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr35ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr33ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr31ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr36ENSURES_VIOLATIONMEMORY_LEAK, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr34ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr32ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr30ASSERT_VIOLATIONMEMORY_FREE, mainErr12REQUIRES_VIOLATION]=== [2020-11-30 01:28:49,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:28:49,837 INFO L82 PathProgramCache]: Analyzing trace with hash -849411233, now seen corresponding path program 1 times [2020-11-30 01:28:49,850 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:28:49,851 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025637160] [2020-11-30 01:28:49,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:28:50,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:28:50,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-30 01:28:50,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:28:50,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:28:50,209 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025637160] [2020-11-30 01:28:50,223 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:28:50,224 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 01:28:50,225 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547004951] [2020-11-30 01:28:50,233 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 01:28:50,237 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:28:50,265 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 01:28:50,266 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 01:28:50,269 INFO L87 Difference]: Start difference. First operand 103 states. Second operand 3 states. [2020-11-30 01:28:50,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:28:50,777 INFO L93 Difference]: Finished difference Result 100 states and 109 transitions. [2020-11-30 01:28:50,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 01:28:50,779 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-11-30 01:28:50,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:28:50,808 INFO L225 Difference]: With dead ends: 100 [2020-11-30 01:28:50,811 INFO L226 Difference]: Without dead ends: 92 [2020-11-30 01:28:50,814 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 01:28:50,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-11-30 01:28:50,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2020-11-30 01:28:50,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-11-30 01:28:50,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 98 transitions. [2020-11-30 01:28:50,894 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 98 transitions. Word has length 11 [2020-11-30 01:28:50,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:28:50,895 INFO L481 AbstractCegarLoop]: Abstraction has 92 states and 98 transitions. [2020-11-30 01:28:50,895 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 01:28:50,895 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 98 transitions. [2020-11-30 01:28:50,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-30 01:28:50,896 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:28:50,896 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:28:50,896 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-30 01:28:50,897 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr35ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr33ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr31ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr36ENSURES_VIOLATIONMEMORY_LEAK, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr34ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr32ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr30ASSERT_VIOLATIONMEMORY_FREE, mainErr12REQUIRES_VIOLATION]=== [2020-11-30 01:28:50,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:28:50,898 INFO L82 PathProgramCache]: Analyzing trace with hash -562931253, now seen corresponding path program 1 times [2020-11-30 01:28:50,898 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:28:50,899 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889616459] [2020-11-30 01:28:50,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:28:50,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:28:51,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-30 01:28:51,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:28:51,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:28:51,110 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889616459] [2020-11-30 01:28:51,111 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:28:51,111 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-30 01:28:51,111 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044054954] [2020-11-30 01:28:51,115 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-30 01:28:51,116 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:28:51,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-30 01:28:51,117 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-30 01:28:51,118 INFO L87 Difference]: Start difference. First operand 92 states and 98 transitions. Second operand 5 states. [2020-11-30 01:28:51,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:28:51,883 INFO L93 Difference]: Finished difference Result 113 states and 124 transitions. [2020-11-30 01:28:51,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-30 01:28:51,884 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-11-30 01:28:51,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:28:51,886 INFO L225 Difference]: With dead ends: 113 [2020-11-30 01:28:51,887 INFO L226 Difference]: Without dead ends: 113 [2020-11-30 01:28:51,888 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-30 01:28:51,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2020-11-30 01:28:51,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 93. [2020-11-30 01:28:51,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-11-30 01:28:51,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 109 transitions. [2020-11-30 01:28:51,906 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 109 transitions. Word has length 12 [2020-11-30 01:28:51,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:28:51,907 INFO L481 AbstractCegarLoop]: Abstraction has 93 states and 109 transitions. [2020-11-30 01:28:51,907 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-30 01:28:51,908 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 109 transitions. [2020-11-30 01:28:51,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-30 01:28:51,908 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:28:51,909 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:28:51,909 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-30 01:28:51,910 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr35ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr33ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr31ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr36ENSURES_VIOLATIONMEMORY_LEAK, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr34ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr32ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr30ASSERT_VIOLATIONMEMORY_FREE, mainErr12REQUIRES_VIOLATION]=== [2020-11-30 01:28:51,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:28:51,911 INFO L82 PathProgramCache]: Analyzing trace with hash -562931252, now seen corresponding path program 1 times [2020-11-30 01:28:51,911 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:28:51,912 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194053621] [2020-11-30 01:28:51,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:28:51,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:28:52,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-30 01:28:52,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:28:52,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:28:52,153 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194053621] [2020-11-30 01:28:52,153 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:28:52,153 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-30 01:28:52,164 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503646293] [2020-11-30 01:28:52,165 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-30 01:28:52,166 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:28:52,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-30 01:28:52,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-30 01:28:52,167 INFO L87 Difference]: Start difference. First operand 93 states and 109 transitions. Second operand 5 states. [2020-11-30 01:28:52,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:28:52,741 INFO L93 Difference]: Finished difference Result 129 states and 143 transitions. [2020-11-30 01:28:52,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-30 01:28:52,742 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-11-30 01:28:52,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:28:52,746 INFO L225 Difference]: With dead ends: 129 [2020-11-30 01:28:52,746 INFO L226 Difference]: Without dead ends: 129 [2020-11-30 01:28:52,747 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-30 01:28:52,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2020-11-30 01:28:52,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 113. [2020-11-30 01:28:52,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-11-30 01:28:52,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 127 transitions. [2020-11-30 01:28:52,773 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 127 transitions. Word has length 12 [2020-11-30 01:28:52,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:28:52,773 INFO L481 AbstractCegarLoop]: Abstraction has 113 states and 127 transitions. [2020-11-30 01:28:52,773 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-30 01:28:52,774 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 127 transitions. [2020-11-30 01:28:52,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-11-30 01:28:52,775 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:28:52,775 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:28:52,776 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-30 01:28:52,776 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr35ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr33ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr31ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr36ENSURES_VIOLATIONMEMORY_LEAK, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr34ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr32ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr30ASSERT_VIOLATIONMEMORY_FREE, mainErr12REQUIRES_VIOLATION]=== [2020-11-30 01:28:52,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:28:52,777 INFO L82 PathProgramCache]: Analyzing trace with hash -1567887182, now seen corresponding path program 1 times [2020-11-30 01:28:52,777 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:28:52,778 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590659286] [2020-11-30 01:28:52,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:28:52,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:28:52,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-30 01:28:52,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:28:53,009 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:28:53,017 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590659286] [2020-11-30 01:28:53,018 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:28:53,018 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-30 01:28:53,018 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131280634] [2020-11-30 01:28:53,019 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-30 01:28:53,019 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:28:53,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-30 01:28:53,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-30 01:28:53,020 INFO L87 Difference]: Start difference. First operand 113 states and 127 transitions. Second operand 7 states. [2020-11-30 01:28:53,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:28:53,857 INFO L93 Difference]: Finished difference Result 157 states and 178 transitions. [2020-11-30 01:28:53,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-30 01:28:53,860 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 21 [2020-11-30 01:28:53,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:28:53,862 INFO L225 Difference]: With dead ends: 157 [2020-11-30 01:28:53,862 INFO L226 Difference]: Without dead ends: 157 [2020-11-30 01:28:53,863 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-11-30 01:28:53,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2020-11-30 01:28:53,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 117. [2020-11-30 01:28:53,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2020-11-30 01:28:53,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 135 transitions. [2020-11-30 01:28:53,875 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 135 transitions. Word has length 21 [2020-11-30 01:28:53,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:28:53,875 INFO L481 AbstractCegarLoop]: Abstraction has 117 states and 135 transitions. [2020-11-30 01:28:53,875 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-30 01:28:53,876 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 135 transitions. [2020-11-30 01:28:53,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-11-30 01:28:53,878 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:28:53,879 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:28:53,879 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-30 01:28:53,879 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr35ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr33ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr31ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr36ENSURES_VIOLATIONMEMORY_LEAK, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr34ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr32ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr30ASSERT_VIOLATIONMEMORY_FREE, mainErr12REQUIRES_VIOLATION]=== [2020-11-30 01:28:53,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:28:53,880 INFO L82 PathProgramCache]: Analyzing trace with hash -1567887181, now seen corresponding path program 1 times [2020-11-30 01:28:53,881 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:28:53,881 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53588233] [2020-11-30 01:28:53,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:28:53,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:28:54,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-30 01:28:54,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:28:54,078 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:28:54,079 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53588233] [2020-11-30 01:28:54,079 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:28:54,079 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-30 01:28:54,079 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047682875] [2020-11-30 01:28:54,080 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-30 01:28:54,080 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:28:54,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-30 01:28:54,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-30 01:28:54,081 INFO L87 Difference]: Start difference. First operand 117 states and 135 transitions. Second operand 7 states. [2020-11-30 01:28:55,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:28:55,027 INFO L93 Difference]: Finished difference Result 160 states and 182 transitions. [2020-11-30 01:28:55,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-30 01:28:55,028 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 21 [2020-11-30 01:28:55,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:28:55,030 INFO L225 Difference]: With dead ends: 160 [2020-11-30 01:28:55,030 INFO L226 Difference]: Without dead ends: 160 [2020-11-30 01:28:55,031 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-11-30 01:28:55,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2020-11-30 01:28:55,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 101. [2020-11-30 01:28:55,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-11-30 01:28:55,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 113 transitions. [2020-11-30 01:28:55,053 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 113 transitions. Word has length 21 [2020-11-30 01:28:55,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:28:55,053 INFO L481 AbstractCegarLoop]: Abstraction has 101 states and 113 transitions. [2020-11-30 01:28:55,054 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-30 01:28:55,054 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 113 transitions. [2020-11-30 01:28:55,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-11-30 01:28:55,056 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:28:55,056 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, 1, 1] [2020-11-30 01:28:55,057 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-30 01:28:55,058 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr35ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr33ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr31ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr36ENSURES_VIOLATIONMEMORY_LEAK, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr34ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr32ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr30ASSERT_VIOLATIONMEMORY_FREE, mainErr12REQUIRES_VIOLATION]=== [2020-11-30 01:28:55,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:28:55,059 INFO L82 PathProgramCache]: Analyzing trace with hash -517016407, now seen corresponding path program 1 times [2020-11-30 01:28:55,060 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:28:55,060 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509484743] [2020-11-30 01:28:55,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:28:55,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:28:55,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-30 01:28:55,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:28:55,332 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:28:55,332 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509484743] [2020-11-30 01:28:55,332 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:28:55,333 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-11-30 01:28:55,333 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809200630] [2020-11-30 01:28:55,333 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-30 01:28:55,334 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:28:55,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-30 01:28:55,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-11-30 01:28:55,335 INFO L87 Difference]: Start difference. First operand 101 states and 113 transitions. Second operand 8 states. [2020-11-30 01:28:56,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:28:56,004 INFO L93 Difference]: Finished difference Result 190 states and 210 transitions. [2020-11-30 01:28:56,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-30 01:28:56,005 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 22 [2020-11-30 01:28:56,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:28:56,007 INFO L225 Difference]: With dead ends: 190 [2020-11-30 01:28:56,007 INFO L226 Difference]: Without dead ends: 190 [2020-11-30 01:28:56,008 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-11-30 01:28:56,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2020-11-30 01:28:56,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 112. [2020-11-30 01:28:56,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2020-11-30 01:28:56,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 128 transitions. [2020-11-30 01:28:56,034 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 128 transitions. Word has length 22 [2020-11-30 01:28:56,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:28:56,034 INFO L481 AbstractCegarLoop]: Abstraction has 112 states and 128 transitions. [2020-11-30 01:28:56,035 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-30 01:28:56,035 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 128 transitions. [2020-11-30 01:28:56,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-11-30 01:28:56,046 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:28:56,046 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, 1, 1, 1, 1] [2020-11-30 01:28:56,046 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-30 01:28:56,047 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr35ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr33ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr31ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr36ENSURES_VIOLATIONMEMORY_LEAK, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr34ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr32ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr30ASSERT_VIOLATIONMEMORY_FREE, mainErr12REQUIRES_VIOLATION]=== [2020-11-30 01:28:56,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:28:56,050 INFO L82 PathProgramCache]: Analyzing trace with hash 1315861814, now seen corresponding path program 1 times [2020-11-30 01:28:56,051 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:28:56,051 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791523709] [2020-11-30 01:28:56,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:28:56,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:28:56,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-30 01:28:56,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:28:56,255 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:28:56,255 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791523709] [2020-11-30 01:28:56,255 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:28:56,256 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-11-30 01:28:56,256 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181816614] [2020-11-30 01:28:56,256 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-30 01:28:56,257 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:28:56,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-30 01:28:56,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-11-30 01:28:56,258 INFO L87 Difference]: Start difference. First operand 112 states and 128 transitions. Second operand 8 states. [2020-11-30 01:28:56,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:28:56,777 INFO L93 Difference]: Finished difference Result 176 states and 193 transitions. [2020-11-30 01:28:56,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-30 01:28:56,777 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 24 [2020-11-30 01:28:56,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:28:56,779 INFO L225 Difference]: With dead ends: 176 [2020-11-30 01:28:56,779 INFO L226 Difference]: Without dead ends: 176 [2020-11-30 01:28:56,781 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-11-30 01:28:56,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2020-11-30 01:28:56,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 114. [2020-11-30 01:28:56,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-11-30 01:28:56,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 130 transitions. [2020-11-30 01:28:56,796 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 130 transitions. Word has length 24 [2020-11-30 01:28:56,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:28:56,797 INFO L481 AbstractCegarLoop]: Abstraction has 114 states and 130 transitions. [2020-11-30 01:28:56,797 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-30 01:28:56,797 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 130 transitions. [2020-11-30 01:28:56,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-11-30 01:28:56,799 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:28:56,799 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:28:56,800 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-30 01:28:56,800 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr35ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr33ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr31ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr36ENSURES_VIOLATIONMEMORY_LEAK, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr34ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr32ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr30ASSERT_VIOLATIONMEMORY_FREE, mainErr12REQUIRES_VIOLATION]=== [2020-11-30 01:28:56,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:28:56,801 INFO L82 PathProgramCache]: Analyzing trace with hash 1990956336, now seen corresponding path program 1 times [2020-11-30 01:28:56,801 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:28:56,802 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402266355] [2020-11-30 01:28:56,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:28:56,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:28:56,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-30 01:28:56,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:28:56,950 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:28:56,951 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402266355] [2020-11-30 01:28:56,951 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:28:56,951 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-30 01:28:56,952 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278318097] [2020-11-30 01:28:56,952 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-30 01:28:56,953 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:28:56,955 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-30 01:28:56,956 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-30 01:28:56,956 INFO L87 Difference]: Start difference. First operand 114 states and 130 transitions. Second operand 7 states. [2020-11-30 01:28:57,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:28:57,554 INFO L93 Difference]: Finished difference Result 129 states and 146 transitions. [2020-11-30 01:28:57,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-30 01:28:57,555 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 24 [2020-11-30 01:28:57,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:28:57,557 INFO L225 Difference]: With dead ends: 129 [2020-11-30 01:28:57,557 INFO L226 Difference]: Without dead ends: 129 [2020-11-30 01:28:57,558 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-11-30 01:28:57,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2020-11-30 01:28:57,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 112. [2020-11-30 01:28:57,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2020-11-30 01:28:57,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 128 transitions. [2020-11-30 01:28:57,565 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 128 transitions. Word has length 24 [2020-11-30 01:28:57,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:28:57,578 INFO L481 AbstractCegarLoop]: Abstraction has 112 states and 128 transitions. [2020-11-30 01:28:57,578 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-30 01:28:57,578 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 128 transitions. [2020-11-30 01:28:57,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-11-30 01:28:57,583 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:28:57,584 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:28:57,584 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-30 01:28:57,585 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr35ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr33ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr31ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr36ENSURES_VIOLATIONMEMORY_LEAK, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr34ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr32ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr30ASSERT_VIOLATIONMEMORY_FREE, mainErr12REQUIRES_VIOLATION]=== [2020-11-30 01:28:57,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:28:57,586 INFO L82 PathProgramCache]: Analyzing trace with hash 1990956337, now seen corresponding path program 1 times [2020-11-30 01:28:57,587 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:28:57,587 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322171635] [2020-11-30 01:28:57,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:28:57,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:28:57,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-30 01:28:57,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:28:57,769 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:28:57,769 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322171635] [2020-11-30 01:28:57,769 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:28:57,769 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-30 01:28:57,770 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379534836] [2020-11-30 01:28:57,770 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-30 01:28:57,770 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:28:57,771 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-30 01:28:57,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-30 01:28:57,772 INFO L87 Difference]: Start difference. First operand 112 states and 128 transitions. Second operand 7 states. [2020-11-30 01:28:58,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:28:58,517 INFO L93 Difference]: Finished difference Result 127 states and 144 transitions. [2020-11-30 01:28:58,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-30 01:28:58,517 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 24 [2020-11-30 01:28:58,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:28:58,519 INFO L225 Difference]: With dead ends: 127 [2020-11-30 01:28:58,519 INFO L226 Difference]: Without dead ends: 127 [2020-11-30 01:28:58,519 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-11-30 01:28:58,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2020-11-30 01:28:58,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 97. [2020-11-30 01:28:58,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-11-30 01:28:58,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 111 transitions. [2020-11-30 01:28:58,526 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 111 transitions. Word has length 24 [2020-11-30 01:28:58,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:28:58,526 INFO L481 AbstractCegarLoop]: Abstraction has 97 states and 111 transitions. [2020-11-30 01:28:58,526 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-30 01:28:58,526 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 111 transitions. [2020-11-30 01:28:58,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-11-30 01:28:58,527 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:28:58,528 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, 1, 1, 1, 1, 1, 1] [2020-11-30 01:28:58,528 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-30 01:28:58,528 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr35ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr33ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr31ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr36ENSURES_VIOLATIONMEMORY_LEAK, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr34ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr32ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr30ASSERT_VIOLATIONMEMORY_FREE, mainErr12REQUIRES_VIOLATION]=== [2020-11-30 01:28:58,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:28:58,529 INFO L82 PathProgramCache]: Analyzing trace with hash 1772362976, now seen corresponding path program 1 times [2020-11-30 01:28:58,529 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:28:58,529 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459002675] [2020-11-30 01:28:58,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:28:58,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:28:58,555 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:28:58,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:28:58,590 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:28:58,649 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 01:28:58,650 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-30 01:28:58,650 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-11-30 01:28:58,726 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 01:28:58 BoogieIcfgContainer [2020-11-30 01:28:58,731 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 01:28:58,732 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 01:28:58,732 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 01:28:58,732 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 01:28:58,733 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:28:49" (3/4) ... [2020-11-30 01:28:58,738 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-30 01:28:58,738 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 01:28:58,742 INFO L168 Benchmark]: Toolchain (without parser) took 12198.87 ms. Allocated memory was 107.0 MB in the beginning and 172.0 MB in the end (delta: 65.0 MB). Free memory was 86.2 MB in the beginning and 109.9 MB in the end (delta: -23.7 MB). Peak memory consumption was 41.0 MB. Max. memory is 16.1 GB. [2020-11-30 01:28:58,744 INFO L168 Benchmark]: CDTParser took 0.88 ms. Allocated memory is still 77.6 MB. Free memory was 53.0 MB in the beginning and 52.9 MB in the end (delta: 53.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 01:28:58,746 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1002.40 ms. Allocated memory is still 107.0 MB. Free memory was 85.9 MB in the beginning and 63.6 MB in the end (delta: 22.3 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. [2020-11-30 01:28:58,747 INFO L168 Benchmark]: Boogie Preprocessor took 171.35 ms. Allocated memory is still 107.0 MB. Free memory was 63.6 MB in the beginning and 60.7 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 01:28:58,754 INFO L168 Benchmark]: RCFGBuilder took 1983.69 ms. Allocated memory is still 107.0 MB. Free memory was 60.7 MB in the beginning and 47.3 MB in the end (delta: 13.4 MB). Peak memory consumption was 23.9 MB. Max. memory is 16.1 GB. [2020-11-30 01:28:58,756 INFO L168 Benchmark]: TraceAbstraction took 9024.87 ms. Allocated memory was 107.0 MB in the beginning and 172.0 MB in the end (delta: 65.0 MB). Free memory was 46.8 MB in the beginning and 110.9 MB in the end (delta: -64.1 MB). Peak memory consumption was 2.4 MB. Max. memory is 16.1 GB. [2020-11-30 01:28:58,758 INFO L168 Benchmark]: Witness Printer took 6.74 ms. Allocated memory is still 172.0 MB. Free memory was 110.9 MB in the beginning and 109.9 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 01:28:58,770 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.88 ms. Allocated memory is still 77.6 MB. Free memory was 53.0 MB in the beginning and 52.9 MB in the end (delta: 53.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 1002.40 ms. Allocated memory is still 107.0 MB. Free memory was 85.9 MB in the beginning and 63.6 MB in the end (delta: 22.3 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 171.35 ms. Allocated memory is still 107.0 MB. Free memory was 63.6 MB in the beginning and 60.7 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1983.69 ms. Allocated memory is still 107.0 MB. Free memory was 60.7 MB in the beginning and 47.3 MB in the end (delta: 13.4 MB). Peak memory consumption was 23.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 9024.87 ms. Allocated memory was 107.0 MB in the beginning and 172.0 MB in the end (delta: 65.0 MB). Free memory was 46.8 MB in the beginning and 110.9 MB in the end (delta: -64.1 MB). Peak memory consumption was 2.4 MB. Max. memory is 16.1 GB. * Witness Printer took 6.74 ms. Allocated memory is still 172.0 MB. Free memory was 110.9 MB in the beginning and 109.9 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 12]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 12. Possible FailurePath: [L533] int i = 0; [L534] int y = 0; [L535] List a = (List) malloc(sizeof(struct node)); VAL [a={-1:0}, i=0, malloc(sizeof(struct node))={-1:0}, y=0] [L536] COND FALSE !(a == 0) VAL [a={-1:0}, i=0, malloc(sizeof(struct node))={-1:0}, y=0] [L537] List t; [L538] List p = a; VAL [a={-1:0}, i=0, malloc(sizeof(struct node))={-1:0}, p={-1:0}, y=0] [L539] i < 10 && __VERIFIER_nondet_int() [L539] i < 10 && __VERIFIER_nondet_int() VAL [__VERIFIER_nondet_int()=0, a={-1:0}, i=0, i < 10 && __VERIFIER_nondet_int()=0, malloc(sizeof(struct node))={-1:0}, p={-1:0}, y=0] [L539] COND FALSE !(i < 10 && __VERIFIER_nondet_int()) [L547] y < 10 && __VERIFIER_nondet_int() [L547] y < 10 && __VERIFIER_nondet_int() VAL [__VERIFIER_nondet_int()=0, a={-1:0}, i=0, malloc(sizeof(struct node))={-1:0}, p={-1:0}, y=0, y < 10 && __VERIFIER_nondet_int()=0] [L547] COND FALSE !(y < 10 && __VERIFIER_nondet_int()) [L555] p->h = 3 VAL [a={-1:0}, i=0, malloc(sizeof(struct node))={-1:0}, p={-1:0}, y=0] [L556] p->n = (void*)__VERIFIER_nondet_ulong() VAL [__VERIFIER_nondet_ulong()=0, a={-1:0}, i=0, malloc(sizeof(struct node))={-1:0}, p={-1:0}, y=0] [L557] i = 0 [L558] y = 0 [L559] p = a VAL [a={-1:0}, i=0, malloc(sizeof(struct node))={-1:0}, p={-1:0}, y=0] [L560] EXPR p->h VAL [a={-1:0}, i=0, malloc(sizeof(struct node))={-1:0}, p={-1:0}, p->h=3, y=0] [L560] COND FALSE !(p->h == 1) [L564] EXPR p->h VAL [a={-1:0}, i=0, malloc(sizeof(struct node))={-1:0}, p={-1:0}, p->h=3, y=0] [L564] COND FALSE !(p->h == 2) [L568] EXPR p->h VAL [a={-1:0}, i=0, malloc(sizeof(struct node))={-1:0}, p={-1:0}, p->h=3, y=0] [L568] COND TRUE p->h != 3 || (i + y) < 20 [L569] CALL reach_error() [L12] COND FALSE !(0) [L12] __assert_fail ("0", "list-ext_2.c", 3, __extension__ __PRETTY_FUNCTION__) - StatisticsResult: Ultimate Automizer benchmark data CFG has 10 procedures, 119 locations, 38 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 8.8s, OverallIterations: 10, TraceHistogramMax: 2, AutomataDifference: 6.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 637 SDtfs, 920 SDslu, 1186 SDs, 0 SdLazy, 2627 SolverSat, 168 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 84 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 1.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=117occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 322 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 197 NumberOfCodeBlocks, 197 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 162 ConstructedInterpolants, 0 QuantifiedInterpolants, 16064 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 16/16 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 could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.0-a4ecdab [2020-11-30 01:29:02,558 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 01:29:02,564 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 01:29:02,644 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 01:29:02,645 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 01:29:02,654 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 01:29:02,658 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 01:29:02,665 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 01:29:02,671 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 01:29:02,680 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 01:29:02,682 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 01:29:02,693 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 01:29:02,694 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 01:29:02,708 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 01:29:02,710 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 01:29:02,713 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 01:29:02,715 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 01:29:02,720 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 01:29:02,726 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 01:29:02,737 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 01:29:02,745 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 01:29:02,752 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 01:29:02,754 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 01:29:02,756 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 01:29:02,761 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 01:29:02,761 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 01:29:02,762 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 01:29:02,764 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 01:29:02,764 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 01:29:02,772 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 01:29:02,773 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 01:29:02,774 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 01:29:02,778 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 01:29:02,779 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 01:29:02,781 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 01:29:02,781 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 01:29:02,782 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 01:29:02,783 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 01:29:02,783 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 01:29:02,786 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 01:29:02,787 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 01:29:02,788 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_885ac3fd-997b-4b23-8951-1b6c4851bedc/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2020-11-30 01:29:02,850 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 01:29:02,850 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 01:29:02,853 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-30 01:29:02,853 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-30 01:29:02,854 INFO L138 SettingsManager]: * Use SBE=true [2020-11-30 01:29:02,854 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 01:29:02,854 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 01:29:02,855 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-30 01:29:02,855 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 01:29:02,855 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 01:29:02,856 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 01:29:02,856 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-11-30 01:29:02,856 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-11-30 01:29:02,856 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-11-30 01:29:02,857 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 01:29:02,857 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-30 01:29:02,857 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-30 01:29:02,858 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-30 01:29:02,858 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 01:29:02,858 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 01:29:02,859 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 01:29:02,859 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-30 01:29:02,859 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 01:29:02,859 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 01:29:02,860 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 01:29:02,860 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 01:29:02,860 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 01:29:02,861 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-11-30 01:29:02,861 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-30 01:29:02,861 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 01:29:02,862 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-30 01:29:02,862 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_885ac3fd-997b-4b23-8951-1b6c4851bedc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_885ac3fd-997b-4b23-8951-1b6c4851bedc/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d6c9e5ba66547a8817cc7b16e9df45177efa4b55 [2020-11-30 01:29:03,426 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 01:29:03,461 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 01:29:03,466 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 01:29:03,468 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 01:29:03,469 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 01:29:03,470 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_885ac3fd-997b-4b23-8951-1b6c4851bedc/bin/uautomizer/../../sv-benchmarks/c/list-ext-properties/list-ext_2.i [2020-11-30 01:29:03,574 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_885ac3fd-997b-4b23-8951-1b6c4851bedc/bin/uautomizer/data/b0ee113e3/25c13a2ecc194c44beb38c5e9e118f5b/FLAG662972145 [2020-11-30 01:29:04,591 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 01:29:04,593 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_885ac3fd-997b-4b23-8951-1b6c4851bedc/sv-benchmarks/c/list-ext-properties/list-ext_2.i [2020-11-30 01:29:04,626 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_885ac3fd-997b-4b23-8951-1b6c4851bedc/bin/uautomizer/data/b0ee113e3/25c13a2ecc194c44beb38c5e9e118f5b/FLAG662972145 [2020-11-30 01:29:04,760 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_885ac3fd-997b-4b23-8951-1b6c4851bedc/bin/uautomizer/data/b0ee113e3/25c13a2ecc194c44beb38c5e9e118f5b [2020-11-30 01:29:04,765 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 01:29:04,769 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-11-30 01:29:04,774 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 01:29:04,775 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 01:29:04,780 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 01:29:04,782 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 01:29:04" (1/1) ... [2020-11-30 01:29:04,785 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@453e696f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:29:04, skipping insertion in model container [2020-11-30 01:29:04,785 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 01:29:04" (1/1) ... [2020-11-30 01:29:04,796 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 01:29:04,883 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 01:29:05,639 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 01:29:05,665 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 01:29:05,764 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 01:29:05,852 INFO L208 MainTranslator]: Completed translation [2020-11-30 01:29:05,853 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:29:05 WrapperNode [2020-11-30 01:29:05,854 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 01:29:05,855 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 01:29:05,855 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 01:29:05,856 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 01:29:05,872 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:29:05" (1/1) ... [2020-11-30 01:29:05,873 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:29:05" (1/1) ... [2020-11-30 01:29:05,901 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:29:05" (1/1) ... [2020-11-30 01:29:05,902 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:29:05" (1/1) ... [2020-11-30 01:29:05,958 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:29:05" (1/1) ... [2020-11-30 01:29:05,970 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:29:05" (1/1) ... [2020-11-30 01:29:05,985 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:29:05" (1/1) ... [2020-11-30 01:29:06,009 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 01:29:06,010 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 01:29:06,010 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 01:29:06,010 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 01:29:06,026 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:29:05" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_885ac3fd-997b-4b23-8951-1b6c4851bedc/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 [2020-11-30 01:29:06,126 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-30 01:29:06,127 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 01:29:06,127 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2020-11-30 01:29:06,127 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-30 01:29:06,127 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-11-30 01:29:06,128 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-11-30 01:29:06,128 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2020-11-30 01:29:06,130 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2020-11-30 01:29:06,130 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2020-11-30 01:29:06,131 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-11-30 01:29:06,131 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-30 01:29:06,131 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-30 01:29:06,132 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-30 01:29:06,133 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-11-30 01:29:06,133 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-11-30 01:29:06,133 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-30 01:29:06,134 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 01:29:06,134 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-11-30 01:29:06,134 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2020-11-30 01:29:06,134 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-11-30 01:29:06,134 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-11-30 01:29:06,135 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-11-30 01:29:06,135 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-11-30 01:29:06,135 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-11-30 01:29:06,135 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-11-30 01:29:06,136 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-11-30 01:29:06,136 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-11-30 01:29:06,136 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-11-30 01:29:06,136 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-11-30 01:29:06,136 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-11-30 01:29:06,137 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-11-30 01:29:06,137 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-11-30 01:29:06,137 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-11-30 01:29:06,137 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-11-30 01:29:06,137 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-11-30 01:29:06,138 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-11-30 01:29:06,138 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-11-30 01:29:06,139 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2020-11-30 01:29:06,139 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2020-11-30 01:29:06,139 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2020-11-30 01:29:06,139 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-11-30 01:29:06,140 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-11-30 01:29:06,140 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-11-30 01:29:06,140 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-11-30 01:29:06,140 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-11-30 01:29:06,141 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-11-30 01:29:06,141 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-11-30 01:29:06,141 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-11-30 01:29:06,141 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-11-30 01:29:06,141 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-11-30 01:29:06,142 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-11-30 01:29:06,143 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-11-30 01:29:06,143 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-11-30 01:29:06,144 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-11-30 01:29:06,145 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-11-30 01:29:06,145 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-11-30 01:29:06,146 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-11-30 01:29:06,146 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-11-30 01:29:06,146 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-11-30 01:29:06,146 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-11-30 01:29:06,146 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-11-30 01:29:06,147 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-11-30 01:29:06,147 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-11-30 01:29:06,147 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-11-30 01:29:06,147 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-11-30 01:29:06,147 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-11-30 01:29:06,148 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-11-30 01:29:06,148 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-11-30 01:29:06,149 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-11-30 01:29:06,150 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-11-30 01:29:06,151 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-11-30 01:29:06,151 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-11-30 01:29:06,152 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-11-30 01:29:06,152 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-11-30 01:29:06,152 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-11-30 01:29:06,152 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-11-30 01:29:06,152 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-11-30 01:29:06,153 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-11-30 01:29:06,154 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-11-30 01:29:06,154 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-11-30 01:29:06,154 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-11-30 01:29:06,154 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-11-30 01:29:06,154 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-11-30 01:29:06,155 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-11-30 01:29:06,155 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-11-30 01:29:06,155 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-11-30 01:29:06,156 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-11-30 01:29:06,157 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-11-30 01:29:06,157 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-11-30 01:29:06,157 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-11-30 01:29:06,157 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-11-30 01:29:06,157 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-11-30 01:29:06,158 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-11-30 01:29:06,158 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-11-30 01:29:06,158 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-11-30 01:29:06,158 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-11-30 01:29:06,158 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-11-30 01:29:06,159 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-11-30 01:29:06,159 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-11-30 01:29:06,159 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-11-30 01:29:06,159 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-11-30 01:29:06,159 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-11-30 01:29:06,160 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-11-30 01:29:06,160 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-11-30 01:29:06,160 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-11-30 01:29:06,160 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-11-30 01:29:06,160 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-11-30 01:29:06,161 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-11-30 01:29:06,161 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-11-30 01:29:06,161 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-11-30 01:29:06,161 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-11-30 01:29:06,162 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-11-30 01:29:06,162 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-11-30 01:29:06,163 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-11-30 01:29:06,163 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-11-30 01:29:06,163 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-11-30 01:29:06,165 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-11-30 01:29:06,165 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-11-30 01:29:06,165 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-11-30 01:29:06,165 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-11-30 01:29:06,165 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-11-30 01:29:06,166 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-11-30 01:29:06,166 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-11-30 01:29:06,166 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-11-30 01:29:06,167 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-11-30 01:29:06,167 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-11-30 01:29:06,167 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-30 01:29:06,169 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-11-30 01:29:06,170 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-11-30 01:29:06,174 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-11-30 01:29:06,174 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-11-30 01:29:06,174 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-11-30 01:29:06,175 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-30 01:29:06,175 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-30 01:29:06,176 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-11-30 01:29:06,176 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 01:29:06,178 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2020-11-30 01:29:06,178 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2020-11-30 01:29:06,179 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2020-11-30 01:29:06,898 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-11-30 01:29:07,569 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 01:29:07,575 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-11-30 01:29:07,581 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:29:07 BoogieIcfgContainer [2020-11-30 01:29:07,581 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 01:29:07,584 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 01:29:07,584 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 01:29:07,588 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 01:29:07,588 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 01:29:04" (1/3) ... [2020-11-30 01:29:07,589 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48af1f9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 01:29:07, skipping insertion in model container [2020-11-30 01:29:07,589 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:29:05" (2/3) ... [2020-11-30 01:29:07,590 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48af1f9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 01:29:07, skipping insertion in model container [2020-11-30 01:29:07,590 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:29:07" (3/3) ... [2020-11-30 01:29:07,592 INFO L111 eAbstractionObserver]: Analyzing ICFG list-ext_2.i [2020-11-30 01:29:07,606 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 01:29:07,613 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 38 error locations. [2020-11-30 01:29:07,628 INFO L253 AbstractCegarLoop]: Starting to check reachability of 38 error locations. [2020-11-30 01:29:07,667 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 01:29:07,667 INFO L378 AbstractCegarLoop]: Hoare is false [2020-11-30 01:29:07,667 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 01:29:07,667 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 01:29:07,667 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 01:29:07,668 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 01:29:07,668 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 01:29:07,668 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 01:29:07,693 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states. [2020-11-30 01:29:07,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-30 01:29:07,701 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:29:07,702 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:29:07,703 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr35ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr33ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr31ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr36ENSURES_VIOLATIONMEMORY_LEAK, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr34ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr32ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr30ASSERT_VIOLATIONMEMORY_FREE, mainErr12REQUIRES_VIOLATION]=== [2020-11-30 01:29:07,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:29:07,708 INFO L82 PathProgramCache]: Analyzing trace with hash -243684713, now seen corresponding path program 1 times [2020-11-30 01:29:07,723 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-30 01:29:07,723 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1674213106] [2020-11-30 01:29:07,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_885ac3fd-997b-4b23-8951-1b6c4851bedc/bin/uautomizer/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-11-30 01:29:07,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:29:07,973 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-30 01:29:07,980 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:29:08,084 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-11-30 01:29:08,085 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-30 01:29:08,104 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-30 01:29:08,105 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-11-30 01:29:08,106 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2020-11-30 01:29:08,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:29:08,147 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 01:29:08,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:29:08,300 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1674213106] [2020-11-30 01:29:08,301 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:29:08,301 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2020-11-30 01:29:08,302 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001930308] [2020-11-30 01:29:08,310 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-30 01:29:08,311 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-30 01:29:08,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-30 01:29:08,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-30 01:29:08,335 INFO L87 Difference]: Start difference. First operand 99 states. Second operand 6 states. [2020-11-30 01:29:09,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:29:09,796 INFO L93 Difference]: Finished difference Result 160 states and 175 transitions. [2020-11-30 01:29:09,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-30 01:29:09,801 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2020-11-30 01:29:09,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:29:09,825 INFO L225 Difference]: With dead ends: 160 [2020-11-30 01:29:09,825 INFO L226 Difference]: Without dead ends: 149 [2020-11-30 01:29:09,827 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-11-30 01:29:09,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2020-11-30 01:29:09,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 114. [2020-11-30 01:29:09,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-11-30 01:29:09,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 138 transitions. [2020-11-30 01:29:09,899 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 138 transitions. Word has length 10 [2020-11-30 01:29:09,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:29:09,900 INFO L481 AbstractCegarLoop]: Abstraction has 114 states and 138 transitions. [2020-11-30 01:29:09,900 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-30 01:29:09,901 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 138 transitions. [2020-11-30 01:29:09,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-30 01:29:09,901 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:29:09,902 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:29:10,115 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-30 01:29:10,116 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr35ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr33ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr31ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr36ENSURES_VIOLATIONMEMORY_LEAK, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr34ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr32ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr30ASSERT_VIOLATIONMEMORY_FREE, mainErr12REQUIRES_VIOLATION]=== [2020-11-30 01:29:10,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:29:10,117 INFO L82 PathProgramCache]: Analyzing trace with hash -243684714, now seen corresponding path program 1 times [2020-11-30 01:29:10,118 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-30 01:29:10,118 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [685606722] [2020-11-30 01:29:10,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_885ac3fd-997b-4b23-8951-1b6c4851bedc/bin/uautomizer/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-11-30 01:29:10,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:29:10,365 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-30 01:29:10,367 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:29:10,377 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-11-30 01:29:10,377 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-30 01:29:10,381 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-30 01:29:10,382 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-11-30 01:29:10,382 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-11-30 01:29:10,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:29:10,404 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 01:29:10,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:29:10,433 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [685606722] [2020-11-30 01:29:10,433 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:29:10,433 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2020-11-30 01:29:10,434 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691592002] [2020-11-30 01:29:10,435 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 01:29:10,436 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-30 01:29:10,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 01:29:10,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-30 01:29:10,437 INFO L87 Difference]: Start difference. First operand 114 states and 138 transitions. Second operand 4 states. [2020-11-30 01:29:10,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:29:10,988 INFO L93 Difference]: Finished difference Result 109 states and 118 transitions. [2020-11-30 01:29:10,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-30 01:29:10,989 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-11-30 01:29:10,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:29:10,990 INFO L225 Difference]: With dead ends: 109 [2020-11-30 01:29:10,991 INFO L226 Difference]: Without dead ends: 109 [2020-11-30 01:29:10,991 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-30 01:29:10,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-11-30 01:29:11,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 103. [2020-11-30 01:29:11,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-11-30 01:29:11,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 112 transitions. [2020-11-30 01:29:11,020 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 112 transitions. Word has length 10 [2020-11-30 01:29:11,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:29:11,021 INFO L481 AbstractCegarLoop]: Abstraction has 103 states and 112 transitions. [2020-11-30 01:29:11,021 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 01:29:11,022 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 112 transitions. [2020-11-30 01:29:11,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-30 01:29:11,024 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:29:11,024 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:29:11,246 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-11-30 01:29:11,246 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr35ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr33ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr31ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr36ENSURES_VIOLATIONMEMORY_LEAK, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr34ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr32ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr30ASSERT_VIOLATIONMEMORY_FREE, mainErr12REQUIRES_VIOLATION]=== [2020-11-30 01:29:11,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:29:11,247 INFO L82 PathProgramCache]: Analyzing trace with hash 235389844, now seen corresponding path program 1 times [2020-11-30 01:29:11,248 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-30 01:29:11,249 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1630786662] [2020-11-30 01:29:11,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_885ac3fd-997b-4b23-8951-1b6c4851bedc/bin/uautomizer/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2020-11-30 01:29:11,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:29:11,496 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-30 01:29:11,498 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:29:11,515 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-11-30 01:29:11,516 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-30 01:29:11,524 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-30 01:29:11,524 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-11-30 01:29:11,524 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2020-11-30 01:29:11,563 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2020-11-30 01:29:11,564 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-30 01:29:11,585 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-30 01:29:11,594 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2020-11-30 01:29:11,594 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-11-30 01:29:11,612 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-30 01:29:11,614 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-30 01:29:11,614 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:34, output treesize:23 [2020-11-30 01:29:11,674 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2020-11-30 01:29:11,675 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-30 01:29:11,697 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-30 01:29:11,702 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2020-11-30 01:29:11,703 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-11-30 01:29:11,713 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-30 01:29:11,714 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-30 01:29:11,714 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:39, output treesize:9 [2020-11-30 01:29:11,762 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:29:11,762 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 01:29:12,133 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:29:12,133 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1630786662] [2020-11-30 01:29:12,133 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:29:12,134 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2020-11-30 01:29:12,134 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130063813] [2020-11-30 01:29:12,134 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-30 01:29:12,135 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-30 01:29:12,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-30 01:29:12,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-11-30 01:29:12,136 INFO L87 Difference]: Start difference. First operand 103 states and 112 transitions. Second operand 10 states. [2020-11-30 01:29:15,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:29:15,007 INFO L93 Difference]: Finished difference Result 149 states and 164 transitions. [2020-11-30 01:29:15,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-30 01:29:15,008 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2020-11-30 01:29:15,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:29:15,009 INFO L225 Difference]: With dead ends: 149 [2020-11-30 01:29:15,010 INFO L226 Difference]: Without dead ends: 149 [2020-11-30 01:29:15,010 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2020-11-30 01:29:15,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2020-11-30 01:29:15,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 99. [2020-11-30 01:29:15,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-11-30 01:29:15,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 111 transitions. [2020-11-30 01:29:15,025 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 111 transitions. Word has length 17 [2020-11-30 01:29:15,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:29:15,026 INFO L481 AbstractCegarLoop]: Abstraction has 99 states and 111 transitions. [2020-11-30 01:29:15,026 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-30 01:29:15,026 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 111 transitions. [2020-11-30 01:29:15,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-30 01:29:15,028 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:29:15,028 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:29:15,234 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-11-30 01:29:15,235 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr35ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr33ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr31ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr36ENSURES_VIOLATIONMEMORY_LEAK, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr34ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr32ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr30ASSERT_VIOLATIONMEMORY_FREE, mainErr12REQUIRES_VIOLATION]=== [2020-11-30 01:29:15,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:29:15,236 INFO L82 PathProgramCache]: Analyzing trace with hash 235389843, now seen corresponding path program 1 times [2020-11-30 01:29:15,237 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-30 01:29:15,237 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [878360893] [2020-11-30 01:29:15,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_885ac3fd-997b-4b23-8951-1b6c4851bedc/bin/uautomizer/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2020-11-30 01:29:15,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:29:15,493 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-30 01:29:15,495 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:29:15,515 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-11-30 01:29:15,516 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-30 01:29:15,523 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-30 01:29:15,524 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-11-30 01:29:15,524 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-11-30 01:29:15,544 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2020-11-30 01:29:15,544 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-30 01:29:15,557 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-30 01:29:15,559 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-30 01:29:15,559 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:21, output treesize:13 [2020-11-30 01:29:15,623 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2020-11-30 01:29:15,624 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-30 01:29:15,629 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-30 01:29:15,629 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-30 01:29:15,629 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:23, output treesize:7 [2020-11-30 01:29:15,668 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:29:15,669 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 01:29:15,714 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:29:15,714 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [878360893] [2020-11-30 01:29:15,715 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:29:15,715 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2020-11-30 01:29:15,715 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333956067] [2020-11-30 01:29:15,716 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-30 01:29:15,716 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-30 01:29:15,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-30 01:29:15,717 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-30 01:29:15,717 INFO L87 Difference]: Start difference. First operand 99 states and 111 transitions. Second operand 6 states. [2020-11-30 01:29:16,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:29:16,600 INFO L93 Difference]: Finished difference Result 135 states and 151 transitions. [2020-11-30 01:29:16,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-30 01:29:16,601 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2020-11-30 01:29:16,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:29:16,603 INFO L225 Difference]: With dead ends: 135 [2020-11-30 01:29:16,603 INFO L226 Difference]: Without dead ends: 135 [2020-11-30 01:29:16,604 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-11-30 01:29:16,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2020-11-30 01:29:16,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 93. [2020-11-30 01:29:16,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-11-30 01:29:16,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 101 transitions. [2020-11-30 01:29:16,616 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 101 transitions. Word has length 17 [2020-11-30 01:29:16,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:29:16,617 INFO L481 AbstractCegarLoop]: Abstraction has 93 states and 101 transitions. [2020-11-30 01:29:16,617 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-30 01:29:16,617 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 101 transitions. [2020-11-30 01:29:16,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-30 01:29:16,619 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:29:16,619 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:29:16,842 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-11-30 01:29:16,843 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr35ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr33ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr31ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr36ENSURES_VIOLATIONMEMORY_LEAK, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr34ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr32ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr30ASSERT_VIOLATIONMEMORY_FREE, mainErr12REQUIRES_VIOLATION]=== [2020-11-30 01:29:16,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:29:16,844 INFO L82 PathProgramCache]: Analyzing trace with hash 1387471408, now seen corresponding path program 1 times [2020-11-30 01:29:16,845 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-30 01:29:16,846 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1482271847] [2020-11-30 01:29:16,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_885ac3fd-997b-4b23-8951-1b6c4851bedc/bin/uautomizer/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2020-11-30 01:29:17,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:29:17,088 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-30 01:29:17,092 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:29:17,146 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-11-30 01:29:17,146 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-30 01:29:17,159 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-30 01:29:17,159 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-30 01:29:17,159 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:18, output treesize:14 [2020-11-30 01:29:17,213 INFO L350 Elim1Store]: treesize reduction 27, result has 20.6 percent of original size [2020-11-30 01:29:17,213 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 13 [2020-11-30 01:29:17,214 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-30 01:29:17,220 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-30 01:29:17,220 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-30 01:29:17,221 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:29, output treesize:9 [2020-11-30 01:29:17,268 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2020-11-30 01:29:17,269 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-30 01:29:17,272 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-30 01:29:17,272 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-30 01:29:17,272 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:17, output treesize:5 [2020-11-30 01:29:17,295 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:29:17,296 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 01:29:17,369 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-11-30 01:29:17,394 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-30 01:29:17,396 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-11-30 01:29:17,396 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:29, output treesize:18 [2020-11-30 01:29:17,489 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 160 treesize of output 152 [2020-11-30 01:29:17,497 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2020-11-30 01:29:17,676 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 21 [2020-11-30 01:29:17,678 INFO L625 ElimStorePlain]: treesize reduction 107, result has 22.5 percent of original size [2020-11-30 01:29:17,693 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2020-11-30 01:29:17,693 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:23, output treesize:24 [2020-11-30 01:29:17,731 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:29:17,732 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1482271847] [2020-11-30 01:29:17,732 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:29:17,732 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 11 [2020-11-30 01:29:17,732 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147349653] [2020-11-30 01:29:17,733 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-11-30 01:29:17,733 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-30 01:29:17,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-11-30 01:29:17,734 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-11-30 01:29:17,735 INFO L87 Difference]: Start difference. First operand 93 states and 101 transitions. Second operand 11 states. [2020-11-30 01:29:19,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:29:19,076 INFO L93 Difference]: Finished difference Result 191 states and 206 transitions. [2020-11-30 01:29:19,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-11-30 01:29:19,077 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 18 [2020-11-30 01:29:19,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:29:19,079 INFO L225 Difference]: With dead ends: 191 [2020-11-30 01:29:19,080 INFO L226 Difference]: Without dead ends: 191 [2020-11-30 01:29:19,080 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2020-11-30 01:29:19,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2020-11-30 01:29:19,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 100. [2020-11-30 01:29:19,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-11-30 01:29:19,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 110 transitions. [2020-11-30 01:29:19,097 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 110 transitions. Word has length 18 [2020-11-30 01:29:19,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:29:19,097 INFO L481 AbstractCegarLoop]: Abstraction has 100 states and 110 transitions. [2020-11-30 01:29:19,097 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-11-30 01:29:19,098 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 110 transitions. [2020-11-30 01:29:19,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-30 01:29:19,105 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:29:19,105 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:29:19,318 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2020-11-30 01:29:19,319 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr35ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr33ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr31ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr36ENSURES_VIOLATIONMEMORY_LEAK, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr34ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr32ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr30ASSERT_VIOLATIONMEMORY_FREE, mainErr12REQUIRES_VIOLATION]=== [2020-11-30 01:29:19,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:29:19,319 INFO L82 PathProgramCache]: Analyzing trace with hash 2130023316, now seen corresponding path program 1 times [2020-11-30 01:29:19,319 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-30 01:29:19,320 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1657673827] [2020-11-30 01:29:19,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_885ac3fd-997b-4b23-8951-1b6c4851bedc/bin/uautomizer/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2020-11-30 01:29:19,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:29:19,505 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-30 01:29:19,507 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:29:19,521 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-11-30 01:29:19,522 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-30 01:29:19,525 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-30 01:29:19,525 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-11-30 01:29:19,526 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-11-30 01:29:19,548 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2020-11-30 01:29:19,548 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-30 01:29:19,566 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-30 01:29:19,567 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-30 01:29:19,567 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:21, output treesize:13 [2020-11-30 01:29:19,594 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2020-11-30 01:29:19,595 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-30 01:29:19,598 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-30 01:29:19,599 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-30 01:29:19,599 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:23, output treesize:7 [2020-11-30 01:29:19,626 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:29:19,626 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 01:29:19,661 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:29:19,661 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1657673827] [2020-11-30 01:29:19,661 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:29:19,662 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2020-11-30 01:29:19,662 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165074298] [2020-11-30 01:29:19,662 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-30 01:29:19,662 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-30 01:29:19,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-30 01:29:19,663 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-30 01:29:19,663 INFO L87 Difference]: Start difference. First operand 100 states and 110 transitions. Second operand 6 states. [2020-11-30 01:29:20,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:29:20,471 INFO L93 Difference]: Finished difference Result 124 states and 138 transitions. [2020-11-30 01:29:20,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-30 01:29:20,472 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2020-11-30 01:29:20,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:29:20,473 INFO L225 Difference]: With dead ends: 124 [2020-11-30 01:29:20,474 INFO L226 Difference]: Without dead ends: 124 [2020-11-30 01:29:20,474 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-11-30 01:29:20,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-11-30 01:29:20,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 98. [2020-11-30 01:29:20,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-11-30 01:29:20,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 108 transitions. [2020-11-30 01:29:20,497 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 108 transitions. Word has length 18 [2020-11-30 01:29:20,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:29:20,498 INFO L481 AbstractCegarLoop]: Abstraction has 98 states and 108 transitions. [2020-11-30 01:29:20,498 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-30 01:29:20,498 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 108 transitions. [2020-11-30 01:29:20,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-30 01:29:20,499 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:29:20,500 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:29:20,700 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2020-11-30 01:29:20,701 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr35ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr33ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr31ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr36ENSURES_VIOLATIONMEMORY_LEAK, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr34ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr32ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr30ASSERT_VIOLATIONMEMORY_FREE, mainErr12REQUIRES_VIOLATION]=== [2020-11-30 01:29:20,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:29:20,702 INFO L82 PathProgramCache]: Analyzing trace with hash 2130023317, now seen corresponding path program 1 times [2020-11-30 01:29:20,703 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-30 01:29:20,703 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [55178555] [2020-11-30 01:29:20,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_885ac3fd-997b-4b23-8951-1b6c4851bedc/bin/uautomizer/mathsat Starting monitored process 8 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with mathsat -unsat_core_generation=3 [2020-11-30 01:29:20,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:29:20,887 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-30 01:29:20,889 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:29:20,899 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-11-30 01:29:20,899 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-30 01:29:20,909 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-30 01:29:20,909 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-11-30 01:29:20,910 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2020-11-30 01:29:20,949 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2020-11-30 01:29:20,950 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-30 01:29:20,967 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-30 01:29:20,975 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2020-11-30 01:29:20,975 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-11-30 01:29:20,990 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-30 01:29:20,991 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-30 01:29:20,992 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:34, output treesize:23 [2020-11-30 01:29:21,048 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2020-11-30 01:29:21,049 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-30 01:29:21,088 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-30 01:29:21,093 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2020-11-30 01:29:21,094 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-11-30 01:29:21,102 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-30 01:29:21,102 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-30 01:29:21,102 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:39, output treesize:9 [2020-11-30 01:29:21,150 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:29:21,150 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 01:29:21,473 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:29:21,473 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [55178555] [2020-11-30 01:29:21,473 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:29:21,474 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2020-11-30 01:29:21,474 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245529707] [2020-11-30 01:29:21,474 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-30 01:29:21,475 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-30 01:29:21,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-30 01:29:21,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-11-30 01:29:21,476 INFO L87 Difference]: Start difference. First operand 98 states and 108 transitions. Second operand 10 states. [2020-11-30 01:29:23,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:29:23,672 INFO L93 Difference]: Finished difference Result 123 states and 136 transitions. [2020-11-30 01:29:23,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-30 01:29:23,674 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 18 [2020-11-30 01:29:23,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:29:23,675 INFO L225 Difference]: With dead ends: 123 [2020-11-30 01:29:23,675 INFO L226 Difference]: Without dead ends: 123 [2020-11-30 01:29:23,676 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2020-11-30 01:29:23,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2020-11-30 01:29:23,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 85. [2020-11-30 01:29:23,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-11-30 01:29:23,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 94 transitions. [2020-11-30 01:29:23,683 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 94 transitions. Word has length 18 [2020-11-30 01:29:23,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:29:23,684 INFO L481 AbstractCegarLoop]: Abstraction has 85 states and 94 transitions. [2020-11-30 01:29:23,684 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-30 01:29:23,684 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 94 transitions. [2020-11-30 01:29:23,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-11-30 01:29:23,686 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:29:23,686 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] [2020-11-30 01:29:23,894 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 mathsat -unsat_core_generation=3 [2020-11-30 01:29:23,895 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr35ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr33ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr31ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr36ENSURES_VIOLATIONMEMORY_LEAK, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr34ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr32ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr30ASSERT_VIOLATIONMEMORY_FREE, mainErr12REQUIRES_VIOLATION]=== [2020-11-30 01:29:23,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:29:23,896 INFO L82 PathProgramCache]: Analyzing trace with hash 1872584189, now seen corresponding path program 1 times [2020-11-30 01:29:23,896 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-30 01:29:23,897 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [20920533] [2020-11-30 01:29:23,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_885ac3fd-997b-4b23-8951-1b6c4851bedc/bin/uautomizer/mathsat Starting monitored process 9 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with mathsat -unsat_core_generation=3 [2020-11-30 01:29:24,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:29:24,125 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-30 01:29:24,127 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:29:24,160 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-11-30 01:29:24,161 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-30 01:29:24,172 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-30 01:29:24,172 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-30 01:29:24,172 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:18, output treesize:14 [2020-11-30 01:29:24,218 INFO L350 Elim1Store]: treesize reduction 27, result has 20.6 percent of original size [2020-11-30 01:29:24,218 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 13 [2020-11-30 01:29:24,219 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-30 01:29:24,222 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-30 01:29:24,222 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-30 01:29:24,222 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:29, output treesize:9 [2020-11-30 01:29:24,250 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2020-11-30 01:29:24,251 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-30 01:29:24,253 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-30 01:29:24,253 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-30 01:29:24,253 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:17, output treesize:5 [2020-11-30 01:29:24,278 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:29:24,279 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 01:29:24,356 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-11-30 01:29:24,363 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-30 01:29:24,364 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-11-30 01:29:24,365 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:31, output treesize:20 [2020-11-30 01:29:24,423 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 160 treesize of output 152 [2020-11-30 01:29:24,428 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2020-11-30 01:29:24,573 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 21 [2020-11-30 01:29:24,574 INFO L625 ElimStorePlain]: treesize reduction 107, result has 22.5 percent of original size [2020-11-30 01:29:24,577 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2020-11-30 01:29:24,577 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:23, output treesize:24 [2020-11-30 01:29:24,591 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:29:24,591 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [20920533] [2020-11-30 01:29:24,592 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:29:24,592 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 11 [2020-11-30 01:29:24,592 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257211525] [2020-11-30 01:29:24,592 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-11-30 01:29:24,592 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-30 01:29:24,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-11-30 01:29:24,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-11-30 01:29:24,594 INFO L87 Difference]: Start difference. First operand 85 states and 94 transitions. Second operand 11 states. [2020-11-30 01:29:25,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:29:25,833 INFO L93 Difference]: Finished difference Result 159 states and 171 transitions. [2020-11-30 01:29:25,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-11-30 01:29:25,834 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 20 [2020-11-30 01:29:25,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:29:25,836 INFO L225 Difference]: With dead ends: 159 [2020-11-30 01:29:25,836 INFO L226 Difference]: Without dead ends: 159 [2020-11-30 01:29:25,837 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2020-11-30 01:29:25,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2020-11-30 01:29:25,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 87. [2020-11-30 01:29:25,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-11-30 01:29:25,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 96 transitions. [2020-11-30 01:29:25,860 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 96 transitions. Word has length 20 [2020-11-30 01:29:25,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:29:25,861 INFO L481 AbstractCegarLoop]: Abstraction has 87 states and 96 transitions. [2020-11-30 01:29:25,861 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-11-30 01:29:25,861 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 96 transitions. [2020-11-30 01:29:25,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-11-30 01:29:25,863 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:29:25,863 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, 1, 1] [2020-11-30 01:29:26,063 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 mathsat -unsat_core_generation=3 [2020-11-30 01:29:26,064 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr35ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr33ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr31ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr36ENSURES_VIOLATIONMEMORY_LEAK, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr34ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr32ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr30ASSERT_VIOLATIONMEMORY_FREE, mainErr12REQUIRES_VIOLATION]=== [2020-11-30 01:29:26,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:29:26,065 INFO L82 PathProgramCache]: Analyzing trace with hash -88346649, now seen corresponding path program 1 times [2020-11-30 01:29:26,066 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-30 01:29:26,066 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2035055772] [2020-11-30 01:29:26,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_885ac3fd-997b-4b23-8951-1b6c4851bedc/bin/uautomizer/mathsat Starting monitored process 10 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with mathsat -unsat_core_generation=3 [2020-11-30 01:29:26,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:29:26,353 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:29:26,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:29:26,436 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:29:26,519 INFO L173 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2020-11-30 01:29:26,519 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-30 01:29:26,730 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 mathsat -unsat_core_generation=3 [2020-11-30 01:29:26,792 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 01:29:26 BoogieIcfgContainer [2020-11-30 01:29:26,793 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 01:29:26,794 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 01:29:26,794 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 01:29:26,795 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 01:29:26,796 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:29:07" (3/4) ... [2020-11-30 01:29:26,800 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-30 01:29:26,801 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 01:29:26,805 INFO L168 Benchmark]: Toolchain (without parser) took 22032.72 ms. Allocated memory was 54.5 MB in the beginning and 125.8 MB in the end (delta: 71.3 MB). Free memory was 31.8 MB in the beginning and 91.4 MB in the end (delta: -59.6 MB). Peak memory consumption was 13.5 MB. Max. memory is 16.1 GB. [2020-11-30 01:29:26,806 INFO L168 Benchmark]: CDTParser took 0.43 ms. Allocated memory is still 54.5 MB. Free memory is still 36.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 01:29:26,807 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1079.62 ms. Allocated memory is still 54.5 MB. Free memory was 31.6 MB in the beginning and 23.5 MB in the end (delta: 8.1 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-11-30 01:29:26,808 INFO L168 Benchmark]: Boogie Preprocessor took 154.04 ms. Allocated memory was 54.5 MB in the beginning and 71.3 MB in the end (delta: 16.8 MB). Free memory was 23.5 MB in the beginning and 52.6 MB in the end (delta: -29.0 MB). Peak memory consumption was 5.3 MB. Max. memory is 16.1 GB. [2020-11-30 01:29:26,809 INFO L168 Benchmark]: RCFGBuilder took 1571.32 ms. Allocated memory is still 71.3 MB. Free memory was 52.6 MB in the beginning and 37.0 MB in the end (delta: 15.6 MB). Peak memory consumption was 25.6 MB. Max. memory is 16.1 GB. [2020-11-30 01:29:26,817 INFO L168 Benchmark]: TraceAbstraction took 19209.92 ms. Allocated memory was 71.3 MB in the beginning and 125.8 MB in the end (delta: 54.5 MB). Free memory was 36.5 MB in the beginning and 91.4 MB in the end (delta: -54.9 MB). Peak memory consumption was 74.4 kB. Max. memory is 16.1 GB. [2020-11-30 01:29:26,818 INFO L168 Benchmark]: Witness Printer took 6.57 ms. Allocated memory is still 125.8 MB. Free memory is still 91.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 01:29:26,825 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.43 ms. Allocated memory is still 54.5 MB. Free memory is still 36.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 1079.62 ms. Allocated memory is still 54.5 MB. Free memory was 31.6 MB in the beginning and 23.5 MB in the end (delta: 8.1 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 154.04 ms. Allocated memory was 54.5 MB in the beginning and 71.3 MB in the end (delta: 16.8 MB). Free memory was 23.5 MB in the beginning and 52.6 MB in the end (delta: -29.0 MB). Peak memory consumption was 5.3 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1571.32 ms. Allocated memory is still 71.3 MB. Free memory was 52.6 MB in the beginning and 37.0 MB in the end (delta: 15.6 MB). Peak memory consumption was 25.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 19209.92 ms. Allocated memory was 71.3 MB in the beginning and 125.8 MB in the end (delta: 54.5 MB). Free memory was 36.5 MB in the beginning and 91.4 MB in the end (delta: -54.9 MB). Peak memory consumption was 74.4 kB. Max. memory is 16.1 GB. * Witness Printer took 6.57 ms. Allocated memory is still 125.8 MB. Free memory is still 91.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 12]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 12. Possible FailurePath: [L533] int i = 0; [L534] int y = 0; [L535] List a = (List) malloc(sizeof(struct node)); VAL [a={1:0}, i=0, malloc(sizeof(struct node))={1:0}, y=0] [L536] COND FALSE !(a == 0) VAL [a={1:0}, i=0, malloc(sizeof(struct node))={1:0}, y=0] [L537] List t; [L538] List p = a; VAL [a={1:0}, i=0, malloc(sizeof(struct node))={1:0}, p={1:0}, y=0] [L539] COND FALSE !(i < 10 && __VERIFIER_nondet_int()) [L547] COND FALSE !(y < 10 && __VERIFIER_nondet_int()) [L555] p->h = 3 VAL [a={1:0}, i=0, malloc(sizeof(struct node))={1:0}, p={1:0}, y=0] [L556] p->n = (void*)__VERIFIER_nondet_ulong() VAL [__VERIFIER_nondet_ulong()=0, a={1:0}, i=0, malloc(sizeof(struct node))={1:0}, p={1:0}, y=0] [L557] i = 0 [L558] y = 0 [L559] p = a VAL [a={1:0}, i=0, malloc(sizeof(struct node))={1:0}, p={1:0}, y=0] [L560] EXPR p->h VAL [a={1:0}, i=0, malloc(sizeof(struct node))={1:0}, p={1:0}, p->h=3, y=0] [L560] COND FALSE !(p->h == 1) [L564] EXPR p->h VAL [a={1:0}, i=0, malloc(sizeof(struct node))={1:0}, p={1:0}, p->h=3, y=0] [L564] COND FALSE !(p->h == 2) [L568] EXPR p->h VAL [a={1:0}, i=0, malloc(sizeof(struct node))={1:0}, p={1:0}, p->h=3, y=0] [L568] COND TRUE p->h != 3 || (i + y) < 20 [L569] CALL reach_error() [L12] COND FALSE !(0) [L12] __assert_fail ("0", "list-ext_2.c", 3, __extension__ __PRETTY_FUNCTION__) - StatisticsResult: Ultimate Automizer benchmark data CFG has 11 procedures, 121 locations, 38 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 19.0s, OverallIterations: 9, TraceHistogramMax: 2, AutomataDifference: 11.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 467 SDtfs, 1123 SDslu, 1399 SDs, 0 SdLazy, 2199 SolverSat, 211 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 8.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 282 GetRequests, 201 SyntacticMatches, 4 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 2.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=114occurred in iteration=1, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 360 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 3.1s InterpolantComputationTime, 150 NumberOfCodeBlocks, 150 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 240 ConstructedInterpolants, 2 QuantifiedInterpolants, 17436 SizeOfPredicates, 62 NumberOfNonLiveVariables, 740 ConjunctsInSsa, 61 ConjunctsInUnsatCore, 16 InterpolantComputations, 16 PerfectInterpolantSequences, 16/16 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 could not prove your program: unable to determine feasibility of some traces Received shutdown request...