./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/locks/test_locks_15-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 906a4fb5 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/locks/test_locks_15-1.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 04dfa849b43716e8587b0fc4953cadbe3968c4e3 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/locks/test_locks_15-1.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 04dfa849b43716e8587b0fc4953cadbe3968c4e3 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample --- Real Ultimate output --- This is Ultimate 0.1.25-906a4fb [2020-10-19 18:23:39,678 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-19 18:23:39,681 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-19 18:23:39,710 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-19 18:23:39,711 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-19 18:23:39,712 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-19 18:23:39,713 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-19 18:23:39,715 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-19 18:23:39,717 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-19 18:23:39,718 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-19 18:23:39,719 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-19 18:23:39,720 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-19 18:23:39,721 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-19 18:23:39,722 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-19 18:23:39,723 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-19 18:23:39,724 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-19 18:23:39,725 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-19 18:23:39,726 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-19 18:23:39,728 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-19 18:23:39,730 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-19 18:23:39,731 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-19 18:23:39,733 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-19 18:23:39,734 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-19 18:23:39,735 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-19 18:23:39,738 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-19 18:23:39,738 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-19 18:23:39,738 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-19 18:23:39,739 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-19 18:23:39,740 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-19 18:23:39,741 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-19 18:23:39,741 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-19 18:23:39,742 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-19 18:23:39,743 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-19 18:23:39,744 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-19 18:23:39,745 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-19 18:23:39,745 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-19 18:23:39,746 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-19 18:23:39,747 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-19 18:23:39,747 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-19 18:23:39,748 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-19 18:23:39,749 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-19 18:23:39,750 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2020-10-19 18:23:39,773 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-19 18:23:39,774 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-19 18:23:39,775 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-19 18:23:39,775 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-19 18:23:39,776 INFO L138 SettingsManager]: * Use SBE=true [2020-10-19 18:23:39,776 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-19 18:23:39,776 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-19 18:23:39,777 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-19 18:23:39,777 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-19 18:23:39,777 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-19 18:23:39,777 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-19 18:23:39,778 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-10-19 18:23:39,778 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-10-19 18:23:39,778 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-10-19 18:23:39,778 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-19 18:23:39,779 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-10-19 18:23:39,779 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-19 18:23:39,779 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-19 18:23:39,780 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-19 18:23:39,780 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-19 18:23:39,780 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-19 18:23:39,780 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-19 18:23:39,781 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-19 18:23:39,781 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-19 18:23:39,781 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-19 18:23:39,782 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-19 18:23:39,782 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-19 18:23:39,782 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-19 18:23:39,783 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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 -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux 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 -> 04dfa849b43716e8587b0fc4953cadbe3968c4e3 [2020-10-19 18:23:40,078 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-19 18:23:40,091 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-19 18:23:40,095 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-19 18:23:40,099 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-19 18:23:40,100 INFO L275 PluginConnector]: CDTParser initialized [2020-10-19 18:23:40,100 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/locks/test_locks_15-1.c [2020-10-19 18:23:40,178 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f611f048e/4c766ea7c1324c879f8efb434f45c0dc/FLAG02b1167cf [2020-10-19 18:23:40,691 INFO L306 CDTParser]: Found 1 translation units. [2020-10-19 18:23:40,692 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/locks/test_locks_15-1.c [2020-10-19 18:23:40,701 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f611f048e/4c766ea7c1324c879f8efb434f45c0dc/FLAG02b1167cf [2020-10-19 18:23:41,047 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f611f048e/4c766ea7c1324c879f8efb434f45c0dc [2020-10-19 18:23:41,051 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-19 18:23:41,059 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-19 18:23:41,061 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-19 18:23:41,061 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-19 18:23:41,064 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-19 18:23:41,066 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 06:23:41" (1/1) ... [2020-10-19 18:23:41,069 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26b21243 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:23:41, skipping insertion in model container [2020-10-19 18:23:41,069 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 06:23:41" (1/1) ... [2020-10-19 18:23:41,077 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-19 18:23:41,122 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-19 18:23:41,351 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 18:23:41,364 INFO L203 MainTranslator]: Completed pre-run [2020-10-19 18:23:41,397 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 18:23:41,475 INFO L208 MainTranslator]: Completed translation [2020-10-19 18:23:41,475 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:23:41 WrapperNode [2020-10-19 18:23:41,475 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-19 18:23:41,476 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-19 18:23:41,477 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-19 18:23:41,477 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-19 18:23:41,494 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:23:41" (1/1) ... [2020-10-19 18:23:41,495 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:23:41" (1/1) ... [2020-10-19 18:23:41,518 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:23:41" (1/1) ... [2020-10-19 18:23:41,519 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:23:41" (1/1) ... [2020-10-19 18:23:41,527 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:23:41" (1/1) ... [2020-10-19 18:23:41,537 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:23:41" (1/1) ... [2020-10-19 18:23:41,539 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:23:41" (1/1) ... [2020-10-19 18:23:41,543 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-19 18:23:41,544 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-19 18:23:41,544 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-19 18:23:41,545 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-19 18:23:41,546 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:23:41" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-10-19 18:23:41,613 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-19 18:23:41,613 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-19 18:23:41,614 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-19 18:23:41,614 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-19 18:23:41,614 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-19 18:23:41,615 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-19 18:23:41,615 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-19 18:23:41,615 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-19 18:23:41,615 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-19 18:23:41,616 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-19 18:23:41,616 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-19 18:23:41,617 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-19 18:23:41,617 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-19 18:23:41,617 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-19 18:23:41,617 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-19 18:23:41,618 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-19 18:23:42,035 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-19 18:23:42,035 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-19 18:23:42,038 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 06:23:42 BoogieIcfgContainer [2020-10-19 18:23:42,038 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-19 18:23:42,040 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-19 18:23:42,040 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-19 18:23:42,044 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-19 18:23:42,044 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.10 06:23:41" (1/3) ... [2020-10-19 18:23:42,045 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@370ecdb9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.10 06:23:42, skipping insertion in model container [2020-10-19 18:23:42,045 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:23:41" (2/3) ... [2020-10-19 18:23:42,046 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@370ecdb9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.10 06:23:42, skipping insertion in model container [2020-10-19 18:23:42,046 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 06:23:42" (3/3) ... [2020-10-19 18:23:42,048 INFO L111 eAbstractionObserver]: Analyzing ICFG test_locks_15-1.c [2020-10-19 18:23:42,061 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-19 18:23:42,069 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-10-19 18:23:42,090 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-10-19 18:23:42,138 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-19 18:23:42,138 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-19 18:23:42,139 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-19 18:23:42,139 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-19 18:23:42,139 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-19 18:23:42,140 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-19 18:23:42,140 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-19 18:23:42,140 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-19 18:23:42,156 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states. [2020-10-19 18:23:42,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-19 18:23:42,165 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:23:42,167 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:23:42,167 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 18:23:42,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:23:42,173 INFO L82 PathProgramCache]: Analyzing trace with hash -1650782030, now seen corresponding path program 1 times [2020-10-19 18:23:42,182 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:23:42,183 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889981591] [2020-10-19 18:23:42,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:23:42,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:42,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:23:42,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:42,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:23:42,427 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889981591] [2020-10-19 18:23:42,428 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:23:42,428 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 18:23:42,429 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823181735] [2020-10-19 18:23:42,435 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 18:23:42,436 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:23:42,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 18:23:42,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 18:23:42,455 INFO L87 Difference]: Start difference. First operand 65 states. Second operand 3 states. [2020-10-19 18:23:42,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:23:42,512 INFO L93 Difference]: Finished difference Result 61 states and 105 transitions. [2020-10-19 18:23:42,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 18:23:42,514 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-10-19 18:23:42,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:23:42,526 INFO L225 Difference]: With dead ends: 61 [2020-10-19 18:23:42,527 INFO L226 Difference]: Without dead ends: 56 [2020-10-19 18:23:42,528 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 [2020-10-19 18:23:42,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-10-19 18:23:42,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2020-10-19 18:23:42,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-10-19 18:23:42,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 100 transitions. [2020-10-19 18:23:42,574 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 100 transitions. Word has length 9 [2020-10-19 18:23:42,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:23:42,575 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 100 transitions. [2020-10-19 18:23:42,575 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 18:23:42,575 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 100 transitions. [2020-10-19 18:23:42,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-19 18:23:42,576 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:23:42,577 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, 1] [2020-10-19 18:23:42,577 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-19 18:23:42,577 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 18:23:42,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:23:42,578 INFO L82 PathProgramCache]: Analyzing trace with hash 868347282, now seen corresponding path program 1 times [2020-10-19 18:23:42,578 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:23:42,579 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506207203] [2020-10-19 18:23:42,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:23:42,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:42,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:23:42,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:42,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:23:42,748 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506207203] [2020-10-19 18:23:42,748 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:23:42,749 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 18:23:42,749 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189159735] [2020-10-19 18:23:42,751 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 18:23:42,752 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:23:42,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 18:23:42,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 18:23:42,753 INFO L87 Difference]: Start difference. First operand 56 states and 100 transitions. Second operand 4 states. [2020-10-19 18:23:43,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:23:43,025 INFO L93 Difference]: Finished difference Result 103 states and 190 transitions. [2020-10-19 18:23:43,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 18:23:43,026 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2020-10-19 18:23:43,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:23:43,029 INFO L225 Difference]: With dead ends: 103 [2020-10-19 18:23:43,029 INFO L226 Difference]: Without dead ends: 103 [2020-10-19 18:23:43,030 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-19 18:23:43,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2020-10-19 18:23:43,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 72. [2020-10-19 18:23:43,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-10-19 18:23:43,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 131 transitions. [2020-10-19 18:23:43,044 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 131 transitions. Word has length 27 [2020-10-19 18:23:43,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:23:43,045 INFO L481 AbstractCegarLoop]: Abstraction has 72 states and 131 transitions. [2020-10-19 18:23:43,046 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 18:23:43,046 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 131 transitions. [2020-10-19 18:23:43,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-19 18:23:43,047 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:23:43,048 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, 1] [2020-10-19 18:23:43,048 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-19 18:23:43,048 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 18:23:43,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:23:43,049 INFO L82 PathProgramCache]: Analyzing trace with hash 868570234, now seen corresponding path program 1 times [2020-10-19 18:23:43,050 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:23:43,050 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983194823] [2020-10-19 18:23:43,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:23:43,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:43,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:23:43,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:43,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:23:43,160 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983194823] [2020-10-19 18:23:43,161 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:23:43,161 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 18:23:43,162 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477803613] [2020-10-19 18:23:43,162 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 18:23:43,163 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:23:43,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 18:23:43,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 18:23:43,164 INFO L87 Difference]: Start difference. First operand 72 states and 131 transitions. Second operand 4 states. [2020-10-19 18:23:43,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:23:43,409 INFO L93 Difference]: Finished difference Result 104 states and 190 transitions. [2020-10-19 18:23:43,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 18:23:43,410 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2020-10-19 18:23:43,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:23:43,412 INFO L225 Difference]: With dead ends: 104 [2020-10-19 18:23:43,412 INFO L226 Difference]: Without dead ends: 104 [2020-10-19 18:23:43,413 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-19 18:23:43,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-10-19 18:23:43,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 103. [2020-10-19 18:23:43,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-10-19 18:23:43,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 189 transitions. [2020-10-19 18:23:43,426 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 189 transitions. Word has length 27 [2020-10-19 18:23:43,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:23:43,426 INFO L481 AbstractCegarLoop]: Abstraction has 103 states and 189 transitions. [2020-10-19 18:23:43,427 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 18:23:43,427 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 189 transitions. [2020-10-19 18:23:43,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-19 18:23:43,428 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:23:43,429 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, 1] [2020-10-19 18:23:43,429 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-19 18:23:43,429 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 18:23:43,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:23:43,430 INFO L82 PathProgramCache]: Analyzing trace with hash -820596460, now seen corresponding path program 1 times [2020-10-19 18:23:43,430 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:23:43,431 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470711086] [2020-10-19 18:23:43,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:23:43,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:43,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:23:43,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:43,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:23:43,518 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470711086] [2020-10-19 18:23:43,518 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:23:43,519 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 18:23:43,519 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167001227] [2020-10-19 18:23:43,520 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 18:23:43,520 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:23:43,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 18:23:43,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 18:23:43,521 INFO L87 Difference]: Start difference. First operand 103 states and 189 transitions. Second operand 4 states. [2020-10-19 18:23:43,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:23:43,733 INFO L93 Difference]: Finished difference Result 106 states and 190 transitions. [2020-10-19 18:23:43,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 18:23:43,734 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2020-10-19 18:23:43,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:23:43,736 INFO L225 Difference]: With dead ends: 106 [2020-10-19 18:23:43,736 INFO L226 Difference]: Without dead ends: 106 [2020-10-19 18:23:43,737 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-19 18:23:43,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-10-19 18:23:43,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 105. [2020-10-19 18:23:43,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-10-19 18:23:43,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 189 transitions. [2020-10-19 18:23:43,746 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 189 transitions. Word has length 27 [2020-10-19 18:23:43,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:23:43,747 INFO L481 AbstractCegarLoop]: Abstraction has 105 states and 189 transitions. [2020-10-19 18:23:43,747 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 18:23:43,748 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 189 transitions. [2020-10-19 18:23:43,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-19 18:23:43,749 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:23:43,749 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, 1] [2020-10-19 18:23:43,749 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-19 18:23:43,750 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 18:23:43,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:23:43,750 INFO L82 PathProgramCache]: Analyzing trace with hash -820373508, now seen corresponding path program 1 times [2020-10-19 18:23:43,751 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:23:43,751 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258724431] [2020-10-19 18:23:43,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:23:43,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:23:43,794 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:23:43,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:23:43,841 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:23:43,912 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 18:23:43,913 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-19 18:23:43,913 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-19 18:23:43,980 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.10 06:23:43 BoogieIcfgContainer [2020-10-19 18:23:43,981 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-19 18:23:43,982 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-19 18:23:43,982 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-19 18:23:43,982 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-19 18:23:43,983 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 06:23:42" (3/4) ... [2020-10-19 18:23:43,987 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-19 18:23:43,987 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-19 18:23:43,990 INFO L168 Benchmark]: Toolchain (without parser) took 2936.04 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 132.1 MB). Free memory was 958.6 MB in the beginning and 913.1 MB in the end (delta: 45.5 MB). Peak memory consumption was 177.7 MB. Max. memory is 11.5 GB. [2020-10-19 18:23:43,990 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 1.0 GB. Free memory is still 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-10-19 18:23:43,991 INFO L168 Benchmark]: CACSL2BoogieTranslator took 415.16 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 132.1 MB). Free memory was 958.6 MB in the beginning and 1.1 GB in the end (delta: -169.3 MB). Peak memory consumption was 26.1 MB. Max. memory is 11.5 GB. [2020-10-19 18:23:43,992 INFO L168 Benchmark]: Boogie Preprocessor took 67.20 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. [2020-10-19 18:23:43,993 INFO L168 Benchmark]: RCFGBuilder took 494.22 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 33.6 MB). Peak memory consumption was 33.6 MB. Max. memory is 11.5 GB. [2020-10-19 18:23:43,994 INFO L168 Benchmark]: TraceAbstraction took 1941.39 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 913.1 MB in the end (delta: 174.6 MB). Peak memory consumption was 174.6 MB. Max. memory is 11.5 GB. [2020-10-19 18:23:43,995 INFO L168 Benchmark]: Witness Printer took 5.53 ms. Allocated memory is still 1.2 GB. Free memory is still 913.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-10-19 18:23:43,999 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 1.0 GB. Free memory is still 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 415.16 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 132.1 MB). Free memory was 958.6 MB in the beginning and 1.1 GB in the end (delta: -169.3 MB). Peak memory consumption was 26.1 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 67.20 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 494.22 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 33.6 MB). Peak memory consumption was 33.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1941.39 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 913.1 MB in the end (delta: 174.6 MB). Peak memory consumption was 174.6 MB. Max. memory is 11.5 GB. * Witness Printer took 5.53 ms. Allocated memory is still 1.2 GB. Free memory is still 913.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 3. Possible FailurePath: [L8] int p1 = __VERIFIER_nondet_int(); [L9] int lk1; [L11] int p2 = __VERIFIER_nondet_int(); [L12] int lk2; [L14] int p3 = __VERIFIER_nondet_int(); [L15] int lk3; [L17] int p4 = __VERIFIER_nondet_int(); [L18] int lk4; [L20] int p5 = __VERIFIER_nondet_int(); [L21] int lk5; [L23] int p6 = __VERIFIER_nondet_int(); [L24] int lk6; [L26] int p7 = __VERIFIER_nondet_int(); [L27] int lk7; [L29] int p8 = __VERIFIER_nondet_int(); [L30] int lk8; [L32] int p9 = __VERIFIER_nondet_int(); [L33] int lk9; [L35] int p10 = __VERIFIER_nondet_int(); [L36] int lk10; [L38] int p11 = __VERIFIER_nondet_int(); [L39] int lk11; [L41] int p12 = __VERIFIER_nondet_int(); [L42] int lk12; [L44] int p13 = __VERIFIER_nondet_int(); [L45] int lk13; [L47] int p14 = __VERIFIER_nondet_int(); [L48] int lk14; [L50] int p15 = __VERIFIER_nondet_int(); [L51] int lk15; [L54] int cond; VAL [p1=0, p10=0, p11=-5, p12=-3, p13=1, p14=1, p15=1, p2=0, p3=1, p4=-4, p5=6, p6=-1, p7=1, p8=-2, p9=1] [L56] COND TRUE 1 [L57] cond = __VERIFIER_nondet_int() [L58] COND FALSE !(cond == 0) [L61] lk1 = 0 [L63] lk2 = 0 [L65] lk3 = 0 [L67] lk4 = 0 [L69] lk5 = 0 [L71] lk6 = 0 [L73] lk7 = 0 [L75] lk8 = 0 [L77] lk9 = 0 [L79] lk10 = 0 [L81] lk11 = 0 [L83] lk12 = 0 [L85] lk13 = 0 [L87] lk14 = 0 [L89] lk15 = 0 VAL [cond=1, lk1=0, lk10=0, lk11=0, lk12=0, lk13=0, lk14=0, lk15=0, lk2=0, lk3=0, lk4=0, lk5=0, lk6=0, lk7=0, lk8=0, lk9=0, p1=0, p10=0, p11=-5, p12=-3, p13=1, p14=1, p15=1, p2=0, p3=1, p4=-4, p5=6, p6=-1, p7=1, p8=-2, p9=1] [L93] COND FALSE !(p1 != 0) VAL [cond=1, lk1=0, lk10=0, lk11=0, lk12=0, lk13=0, lk14=0, lk15=0, lk2=0, lk3=0, lk4=0, lk5=0, lk6=0, lk7=0, lk8=0, lk9=0, p1=0, p10=0, p11=-5, p12=-3, p13=1, p14=1, p15=1, p2=0, p3=1, p4=-4, p5=6, p6=-1, p7=1, p8=-2, p9=1] [L97] COND FALSE !(p2 != 0) VAL [cond=1, lk1=0, lk10=0, lk11=0, lk12=0, lk13=0, lk14=0, lk15=0, lk2=0, lk3=0, lk4=0, lk5=0, lk6=0, lk7=0, lk8=0, lk9=0, p1=0, p10=0, p11=-5, p12=-3, p13=1, p14=1, p15=1, p2=0, p3=1, p4=-4, p5=6, p6=-1, p7=1, p8=-2, p9=1] [L101] COND TRUE p3 != 0 [L102] lk3 = 1 VAL [cond=1, lk1=0, lk10=0, lk11=0, lk12=0, lk13=0, lk14=0, lk15=0, lk2=0, lk3=1, lk4=0, lk5=0, lk6=0, lk7=0, lk8=0, lk9=0, p1=0, p10=0, p11=-5, p12=-3, p13=1, p14=1, p15=1, p2=0, p3=1, p4=-4, p5=6, p6=-1, p7=1, p8=-2, p9=1] [L105] COND TRUE p4 != 0 [L106] lk4 = 1 VAL [cond=1, lk1=0, lk10=0, lk11=0, lk12=0, lk13=0, lk14=0, lk15=0, lk2=0, lk3=1, lk4=1, lk5=0, lk6=0, lk7=0, lk8=0, lk9=0, p1=0, p10=0, p11=-5, p12=-3, p13=1, p14=1, p15=1, p2=0, p3=1, p4=-4, p5=6, p6=-1, p7=1, p8=-2, p9=1] [L109] COND TRUE p5 != 0 [L110] lk5 = 1 VAL [cond=1, lk1=0, lk10=0, lk11=0, lk12=0, lk13=0, lk14=0, lk15=0, lk2=0, lk3=1, lk4=1, lk5=1, lk6=0, lk7=0, lk8=0, lk9=0, p1=0, p10=0, p11=-5, p12=-3, p13=1, p14=1, p15=1, p2=0, p3=1, p4=-4, p5=6, p6=-1, p7=1, p8=-2, p9=1] [L113] COND TRUE p6 != 0 [L114] lk6 = 1 VAL [cond=1, lk1=0, lk10=0, lk11=0, lk12=0, lk13=0, lk14=0, lk15=0, lk2=0, lk3=1, lk4=1, lk5=1, lk6=1, lk7=0, lk8=0, lk9=0, p1=0, p10=0, p11=-5, p12=-3, p13=1, p14=1, p15=1, p2=0, p3=1, p4=-4, p5=6, p6=-1, p7=1, p8=-2, p9=1] [L117] COND TRUE p7 != 0 [L118] lk7 = 1 VAL [cond=1, lk1=0, lk10=0, lk11=0, lk12=0, lk13=0, lk14=0, lk15=0, lk2=0, lk3=1, lk4=1, lk5=1, lk6=1, lk7=1, lk8=0, lk9=0, p1=0, p10=0, p11=-5, p12=-3, p13=1, p14=1, p15=1, p2=0, p3=1, p4=-4, p5=6, p6=-1, p7=1, p8=-2, p9=1] [L121] COND TRUE p8 != 0 [L122] lk8 = 1 VAL [cond=1, lk1=0, lk10=0, lk11=0, lk12=0, lk13=0, lk14=0, lk15=0, lk2=0, lk3=1, lk4=1, lk5=1, lk6=1, lk7=1, lk8=1, lk9=0, p1=0, p10=0, p11=-5, p12=-3, p13=1, p14=1, p15=1, p2=0, p3=1, p4=-4, p5=6, p6=-1, p7=1, p8=-2, p9=1] [L125] COND TRUE p9 != 0 [L126] lk9 = 1 VAL [cond=1, lk1=0, lk10=0, lk11=0, lk12=0, lk13=0, lk14=0, lk15=0, lk2=0, lk3=1, lk4=1, lk5=1, lk6=1, lk7=1, lk8=1, lk9=1, p1=0, p10=0, p11=-5, p12=-3, p13=1, p14=1, p15=1, p2=0, p3=1, p4=-4, p5=6, p6=-1, p7=1, p8=-2, p9=1] [L129] COND FALSE !(p10 != 0) VAL [cond=1, lk1=0, lk10=0, lk11=0, lk12=0, lk13=0, lk14=0, lk15=0, lk2=0, lk3=1, lk4=1, lk5=1, lk6=1, lk7=1, lk8=1, lk9=1, p1=0, p10=0, p11=-5, p12=-3, p13=1, p14=1, p15=1, p2=0, p3=1, p4=-4, p5=6, p6=-1, p7=1, p8=-2, p9=1] [L133] COND TRUE p11 != 0 [L134] lk11 = 1 VAL [cond=1, lk1=0, lk10=0, lk11=1, lk12=0, lk13=0, lk14=0, lk15=0, lk2=0, lk3=1, lk4=1, lk5=1, lk6=1, lk7=1, lk8=1, lk9=1, p1=0, p10=0, p11=-5, p12=-3, p13=1, p14=1, p15=1, p2=0, p3=1, p4=-4, p5=6, p6=-1, p7=1, p8=-2, p9=1] [L137] COND TRUE p12 != 0 [L138] lk12 = 1 VAL [cond=1, lk1=0, lk10=0, lk11=1, lk12=1, lk13=0, lk14=0, lk15=0, lk2=0, lk3=1, lk4=1, lk5=1, lk6=1, lk7=1, lk8=1, lk9=1, p1=0, p10=0, p11=-5, p12=-3, p13=1, p14=1, p15=1, p2=0, p3=1, p4=-4, p5=6, p6=-1, p7=1, p8=-2, p9=1] [L141] COND TRUE p13 != 0 [L142] lk13 = 1 VAL [cond=1, lk1=0, lk10=0, lk11=1, lk12=1, lk13=1, lk14=0, lk15=0, lk2=0, lk3=1, lk4=1, lk5=1, lk6=1, lk7=1, lk8=1, lk9=1, p1=0, p10=0, p11=-5, p12=-3, p13=1, p14=1, p15=1, p2=0, p3=1, p4=-4, p5=6, p6=-1, p7=1, p8=-2, p9=1] [L145] COND TRUE p14 != 0 [L146] lk14 = 1 VAL [cond=1, lk1=0, lk10=0, lk11=1, lk12=1, lk13=1, lk14=1, lk15=0, lk2=0, lk3=1, lk4=1, lk5=1, lk6=1, lk7=1, lk8=1, lk9=1, p1=0, p10=0, p11=-5, p12=-3, p13=1, p14=1, p15=1, p2=0, p3=1, p4=-4, p5=6, p6=-1, p7=1, p8=-2, p9=1] [L149] COND TRUE p15 != 0 [L150] lk15 = 1 VAL [cond=1, lk1=0, lk10=0, lk11=1, lk12=1, lk13=1, lk14=1, lk15=1, lk2=0, lk3=1, lk4=1, lk5=1, lk6=1, lk7=1, lk8=1, lk9=1, p1=0, p10=0, p11=-5, p12=-3, p13=1, p14=1, p15=1, p2=0, p3=1, p4=-4, p5=6, p6=-1, p7=1, p8=-2, p9=1] [L155] COND FALSE !(p1 != 0) VAL [cond=1, lk1=0, lk10=0, lk11=1, lk12=1, lk13=1, lk14=1, lk15=1, lk2=0, lk3=1, lk4=1, lk5=1, lk6=1, lk7=1, lk8=1, lk9=1, p1=0, p10=0, p11=-5, p12=-3, p13=1, p14=1, p15=1, p2=0, p3=1, p4=-4, p5=6, p6=-1, p7=1, p8=-2, p9=1] [L160] COND FALSE !(p2 != 0) VAL [cond=1, lk1=0, lk10=0, lk11=1, lk12=1, lk13=1, lk14=1, lk15=1, lk2=0, lk3=1, lk4=1, lk5=1, lk6=1, lk7=1, lk8=1, lk9=1, p1=0, p10=0, p11=-5, p12=-3, p13=1, p14=1, p15=1, p2=0, p3=1, p4=-4, p5=6, p6=-1, p7=1, p8=-2, p9=1] [L233] CALL reach_error() [L3] __assert_fail("0", "test_locks_15-1.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 65 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.7s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 487 SDtfs, 769 SDslu, 24 SDs, 0 SdLazy, 292 SolverSat, 15 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=105occurred 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: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 33 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 117 NumberOfCodeBlocks, 117 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 86 ConstructedInterpolants, 0 QuantifiedInterpolants, 7454 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 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 0.1.25-906a4fb [2020-10-19 18:23:45,939 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-19 18:23:45,942 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-19 18:23:45,967 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-19 18:23:45,968 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-19 18:23:45,969 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-19 18:23:45,971 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-19 18:23:45,973 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-19 18:23:45,975 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-19 18:23:45,976 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-19 18:23:45,977 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-19 18:23:45,979 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-19 18:23:45,979 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-19 18:23:45,980 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-19 18:23:45,982 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-19 18:23:45,983 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-19 18:23:45,984 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-19 18:23:45,985 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-19 18:23:45,987 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-19 18:23:45,989 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-19 18:23:45,991 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-19 18:23:45,992 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-19 18:23:45,997 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-19 18:23:45,998 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-19 18:23:46,002 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-19 18:23:46,005 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-19 18:23:46,006 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-19 18:23:46,007 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-19 18:23:46,009 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-19 18:23:46,010 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-19 18:23:46,011 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-19 18:23:46,012 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-19 18:23:46,013 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-19 18:23:46,015 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-19 18:23:46,016 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-19 18:23:46,017 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-19 18:23:46,018 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-19 18:23:46,018 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-19 18:23:46,019 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-19 18:23:46,020 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-19 18:23:46,021 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-19 18:23:46,022 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2020-10-19 18:23:46,079 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-19 18:23:46,080 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-19 18:23:46,081 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-19 18:23:46,084 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-19 18:23:46,084 INFO L138 SettingsManager]: * Use SBE=true [2020-10-19 18:23:46,085 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-19 18:23:46,085 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-19 18:23:46,086 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-19 18:23:46,086 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-19 18:23:46,086 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-19 18:23:46,087 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-19 18:23:46,088 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-10-19 18:23:46,088 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-10-19 18:23:46,089 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-10-19 18:23:46,089 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-19 18:23:46,089 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-10-19 18:23:46,089 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-10-19 18:23:46,090 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-10-19 18:23:46,090 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-19 18:23:46,090 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-19 18:23:46,090 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-19 18:23:46,091 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-19 18:23:46,091 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-19 18:23:46,092 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-19 18:23:46,092 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-19 18:23:46,092 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-19 18:23:46,093 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-19 18:23:46,093 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-10-19 18:23:46,093 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-10-19 18:23:46,094 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-19 18:23:46,094 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-19 18:23:46,094 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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 -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux 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 -> 04dfa849b43716e8587b0fc4953cadbe3968c4e3 [2020-10-19 18:23:46,411 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-19 18:23:46,423 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-19 18:23:46,427 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-19 18:23:46,429 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-19 18:23:46,429 INFO L275 PluginConnector]: CDTParser initialized [2020-10-19 18:23:46,430 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/locks/test_locks_15-1.c [2020-10-19 18:23:46,485 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/02bd26772/c9721daee2eb4ef9813d7e73b4f9c30f/FLAG3b8300a3b [2020-10-19 18:23:46,887 INFO L306 CDTParser]: Found 1 translation units. [2020-10-19 18:23:46,888 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/locks/test_locks_15-1.c [2020-10-19 18:23:46,898 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/02bd26772/c9721daee2eb4ef9813d7e73b4f9c30f/FLAG3b8300a3b [2020-10-19 18:23:47,309 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/02bd26772/c9721daee2eb4ef9813d7e73b4f9c30f [2020-10-19 18:23:47,314 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-19 18:23:47,323 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-19 18:23:47,328 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-19 18:23:47,329 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-19 18:23:47,333 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-19 18:23:47,334 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 06:23:47" (1/1) ... [2020-10-19 18:23:47,338 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@664e0f82 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:23:47, skipping insertion in model container [2020-10-19 18:23:47,338 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 06:23:47" (1/1) ... [2020-10-19 18:23:47,348 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-19 18:23:47,378 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-19 18:23:47,617 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 18:23:47,633 INFO L203 MainTranslator]: Completed pre-run [2020-10-19 18:23:47,747 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 18:23:47,770 INFO L208 MainTranslator]: Completed translation [2020-10-19 18:23:47,771 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:23:47 WrapperNode [2020-10-19 18:23:47,771 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-19 18:23:47,772 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-19 18:23:47,772 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-19 18:23:47,773 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-19 18:23:47,787 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:23:47" (1/1) ... [2020-10-19 18:23:47,788 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:23:47" (1/1) ... [2020-10-19 18:23:47,800 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:23:47" (1/1) ... [2020-10-19 18:23:47,801 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:23:47" (1/1) ... [2020-10-19 18:23:47,813 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:23:47" (1/1) ... [2020-10-19 18:23:47,822 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:23:47" (1/1) ... [2020-10-19 18:23:47,824 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:23:47" (1/1) ... [2020-10-19 18:23:47,829 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-19 18:23:47,829 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-19 18:23:47,830 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-19 18:23:47,830 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-19 18:23:47,831 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:23:47" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-10-19 18:23:47,932 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-19 18:23:47,933 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-19 18:23:47,934 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-19 18:23:47,935 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-19 18:23:47,935 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-19 18:23:47,935 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-19 18:23:47,936 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-19 18:23:47,938 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-19 18:23:47,938 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-19 18:23:47,938 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-19 18:23:47,938 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-19 18:23:47,938 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-10-19 18:23:47,939 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-19 18:23:47,941 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2020-10-19 18:23:47,942 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2020-10-19 18:23:47,942 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-19 18:23:48,459 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-19 18:23:48,460 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-19 18:23:48,462 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 06:23:48 BoogieIcfgContainer [2020-10-19 18:23:48,462 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-19 18:23:48,464 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-19 18:23:48,464 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-19 18:23:48,469 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-19 18:23:48,469 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.10 06:23:47" (1/3) ... [2020-10-19 18:23:48,470 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@257ce339 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.10 06:23:48, skipping insertion in model container [2020-10-19 18:23:48,471 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:23:47" (2/3) ... [2020-10-19 18:23:48,471 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@257ce339 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.10 06:23:48, skipping insertion in model container [2020-10-19 18:23:48,471 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 06:23:48" (3/3) ... [2020-10-19 18:23:48,473 INFO L111 eAbstractionObserver]: Analyzing ICFG test_locks_15-1.c [2020-10-19 18:23:48,486 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-19 18:23:48,498 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-10-19 18:23:48,515 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-10-19 18:23:48,538 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-19 18:23:48,539 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-19 18:23:48,539 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-19 18:23:48,540 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-19 18:23:48,540 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-19 18:23:48,540 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-19 18:23:48,540 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-19 18:23:48,541 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-19 18:23:48,559 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states. [2020-10-19 18:23:48,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-19 18:23:48,570 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:23:48,571 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:23:48,572 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 18:23:48,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:23:48,580 INFO L82 PathProgramCache]: Analyzing trace with hash -1650782030, now seen corresponding path program 1 times [2020-10-19 18:23:48,596 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 18:23:48,597 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1124429324] [2020-10-19 18:23:48,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-10-19 18:23:48,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:48,704 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 1 conjunts are in the unsatisfiable core [2020-10-19 18:23:48,711 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:23:48,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:23:48,738 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 18:23:48,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:23:48,762 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1124429324] [2020-10-19 18:23:48,763 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:23:48,763 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-10-19 18:23:48,764 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774741041] [2020-10-19 18:23:48,770 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-19 18:23:48,770 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 18:23:48,787 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-19 18:23:48,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-19 18:23:48,791 INFO L87 Difference]: Start difference. First operand 65 states. Second operand 2 states. [2020-10-19 18:23:48,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:23:48,821 INFO L93 Difference]: Finished difference Result 61 states and 105 transitions. [2020-10-19 18:23:48,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-19 18:23:48,823 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 9 [2020-10-19 18:23:48,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:23:48,836 INFO L225 Difference]: With dead ends: 61 [2020-10-19 18:23:48,836 INFO L226 Difference]: Without dead ends: 56 [2020-10-19 18:23:48,838 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-19 18:23:48,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-10-19 18:23:48,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2020-10-19 18:23:48,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-10-19 18:23:48,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 100 transitions. [2020-10-19 18:23:48,888 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 100 transitions. Word has length 9 [2020-10-19 18:23:48,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:23:48,889 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 100 transitions. [2020-10-19 18:23:48,889 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-19 18:23:48,890 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 100 transitions. [2020-10-19 18:23:48,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-19 18:23:48,891 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:23:48,891 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, 1] [2020-10-19 18:23:49,115 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-10-19 18:23:49,116 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 18:23:49,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:23:49,117 INFO L82 PathProgramCache]: Analyzing trace with hash 868347282, now seen corresponding path program 1 times [2020-10-19 18:23:49,118 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 18:23:49,119 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1243036335] [2020-10-19 18:23:49,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-10-19 18:23:49,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:49,212 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-19 18:23:49,215 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:23:49,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:23:49,234 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 18:23:49,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:23:49,256 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1243036335] [2020-10-19 18:23:49,257 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:23:49,257 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2020-10-19 18:23:49,257 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180051409] [2020-10-19 18:23:49,259 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 18:23:49,260 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 18:23:49,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 18:23:49,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 18:23:49,261 INFO L87 Difference]: Start difference. First operand 56 states and 100 transitions. Second operand 3 states. [2020-10-19 18:23:49,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:23:49,297 INFO L93 Difference]: Finished difference Result 103 states and 190 transitions. [2020-10-19 18:23:49,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 18:23:49,298 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 27 [2020-10-19 18:23:49,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:23:49,301 INFO L225 Difference]: With dead ends: 103 [2020-10-19 18:23:49,302 INFO L226 Difference]: Without dead ends: 103 [2020-10-19 18:23:49,303 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 18:23:49,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2020-10-19 18:23:49,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 72. [2020-10-19 18:23:49,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-10-19 18:23:49,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 131 transitions. [2020-10-19 18:23:49,318 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 131 transitions. Word has length 27 [2020-10-19 18:23:49,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:23:49,319 INFO L481 AbstractCegarLoop]: Abstraction has 72 states and 131 transitions. [2020-10-19 18:23:49,319 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 18:23:49,319 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 131 transitions. [2020-10-19 18:23:49,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-19 18:23:49,321 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:23:49,321 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, 1] [2020-10-19 18:23:49,533 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-10-19 18:23:49,536 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 18:23:49,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:23:49,537 INFO L82 PathProgramCache]: Analyzing trace with hash 868570234, now seen corresponding path program 1 times [2020-10-19 18:23:49,538 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 18:23:49,538 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [565867478] [2020-10-19 18:23:49,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-10-19 18:23:49,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:49,623 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-19 18:23:49,625 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:23:49,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:23:49,640 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 18:23:49,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:23:49,661 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [565867478] [2020-10-19 18:23:49,661 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:23:49,661 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2020-10-19 18:23:49,662 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689545308] [2020-10-19 18:23:49,663 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 18:23:49,663 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 18:23:49,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 18:23:49,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 18:23:49,664 INFO L87 Difference]: Start difference. First operand 72 states and 131 transitions. Second operand 3 states. [2020-10-19 18:23:49,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:23:49,688 INFO L93 Difference]: Finished difference Result 104 states and 190 transitions. [2020-10-19 18:23:49,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 18:23:49,689 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 27 [2020-10-19 18:23:49,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:23:49,691 INFO L225 Difference]: With dead ends: 104 [2020-10-19 18:23:49,691 INFO L226 Difference]: Without dead ends: 104 [2020-10-19 18:23:49,692 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 18:23:49,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-10-19 18:23:49,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 103. [2020-10-19 18:23:49,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-10-19 18:23:49,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 189 transitions. [2020-10-19 18:23:49,706 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 189 transitions. Word has length 27 [2020-10-19 18:23:49,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:23:49,707 INFO L481 AbstractCegarLoop]: Abstraction has 103 states and 189 transitions. [2020-10-19 18:23:49,707 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 18:23:49,707 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 189 transitions. [2020-10-19 18:23:49,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-19 18:23:49,709 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:23:49,709 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, 1] [2020-10-19 18:23:49,930 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-10-19 18:23:49,931 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 18:23:49,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:23:49,932 INFO L82 PathProgramCache]: Analyzing trace with hash -820596460, now seen corresponding path program 1 times [2020-10-19 18:23:49,933 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 18:23:49,934 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [384783545] [2020-10-19 18:23:49,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-10-19 18:23:50,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:23:50,010 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-19 18:23:50,012 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:23:50,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:23:50,028 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 18:23:50,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:23:50,064 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [384783545] [2020-10-19 18:23:50,064 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:23:50,065 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2020-10-19 18:23:50,065 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871645696] [2020-10-19 18:23:50,066 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 18:23:50,066 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 18:23:50,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 18:23:50,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 18:23:50,069 INFO L87 Difference]: Start difference. First operand 103 states and 189 transitions. Second operand 3 states. [2020-10-19 18:23:50,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:23:50,111 INFO L93 Difference]: Finished difference Result 106 states and 190 transitions. [2020-10-19 18:23:50,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 18:23:50,112 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 27 [2020-10-19 18:23:50,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:23:50,116 INFO L225 Difference]: With dead ends: 106 [2020-10-19 18:23:50,117 INFO L226 Difference]: Without dead ends: 106 [2020-10-19 18:23:50,117 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 18:23:50,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-10-19 18:23:50,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 105. [2020-10-19 18:23:50,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-10-19 18:23:50,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 189 transitions. [2020-10-19 18:23:50,147 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 189 transitions. Word has length 27 [2020-10-19 18:23:50,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:23:50,148 INFO L481 AbstractCegarLoop]: Abstraction has 105 states and 189 transitions. [2020-10-19 18:23:50,148 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 18:23:50,149 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 189 transitions. [2020-10-19 18:23:50,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-19 18:23:50,152 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:23:50,152 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, 1] [2020-10-19 18:23:50,366 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-10-19 18:23:50,367 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 18:23:50,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:23:50,368 INFO L82 PathProgramCache]: Analyzing trace with hash -820373508, now seen corresponding path program 1 times [2020-10-19 18:23:50,369 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 18:23:50,369 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1269337534] [2020-10-19 18:23:50,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-10-19 18:23:50,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:23:50,450 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:23:50,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:23:50,514 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:23:50,587 INFO L173 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2020-10-19 18:23:50,588 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-19 18:23:50,802 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2020-10-19 18:23:50,891 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.10 06:23:50 BoogieIcfgContainer [2020-10-19 18:23:50,892 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-19 18:23:50,892 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-19 18:23:50,892 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-19 18:23:50,893 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-19 18:23:50,894 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 06:23:48" (3/4) ... [2020-10-19 18:23:50,898 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-19 18:23:50,898 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-19 18:23:50,901 INFO L168 Benchmark]: Toolchain (without parser) took 3584.97 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 131.6 MB). Free memory was 960.0 MB in the beginning and 952.7 MB in the end (delta: 7.3 MB). Peak memory consumption was 138.9 MB. Max. memory is 11.5 GB. [2020-10-19 18:23:50,902 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 1.0 GB. Free memory is still 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-10-19 18:23:50,903 INFO L168 Benchmark]: CACSL2BoogieTranslator took 443.74 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 131.6 MB). Free memory was 960.0 MB in the beginning and 1.1 GB in the end (delta: -160.9 MB). Peak memory consumption was 26.0 MB. Max. memory is 11.5 GB. [2020-10-19 18:23:50,904 INFO L168 Benchmark]: Boogie Preprocessor took 56.83 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2020-10-19 18:23:50,905 INFO L168 Benchmark]: RCFGBuilder took 633.08 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 33.6 MB). Peak memory consumption was 33.6 MB. Max. memory is 11.5 GB. [2020-10-19 18:23:50,906 INFO L168 Benchmark]: TraceAbstraction took 2428.18 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 952.7 MB in the end (delta: 134.6 MB). Peak memory consumption was 134.6 MB. Max. memory is 11.5 GB. [2020-10-19 18:23:50,906 INFO L168 Benchmark]: Witness Printer took 6.35 ms. Allocated memory is still 1.2 GB. Free memory is still 952.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-10-19 18:23:50,910 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 1.0 GB. Free memory is still 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 443.74 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 131.6 MB). Free memory was 960.0 MB in the beginning and 1.1 GB in the end (delta: -160.9 MB). Peak memory consumption was 26.0 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 56.83 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 633.08 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 33.6 MB). Peak memory consumption was 33.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 2428.18 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 952.7 MB in the end (delta: 134.6 MB). Peak memory consumption was 134.6 MB. Max. memory is 11.5 GB. * Witness Printer took 6.35 ms. Allocated memory is still 1.2 GB. Free memory is still 952.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 3. Possible FailurePath: [L8] int p1 = __VERIFIER_nondet_int(); [L9] int lk1; [L11] int p2 = __VERIFIER_nondet_int(); [L12] int lk2; [L14] int p3 = __VERIFIER_nondet_int(); [L15] int lk3; [L17] int p4 = __VERIFIER_nondet_int(); [L18] int lk4; [L20] int p5 = __VERIFIER_nondet_int(); [L21] int lk5; [L23] int p6 = __VERIFIER_nondet_int(); [L24] int lk6; [L26] int p7 = __VERIFIER_nondet_int(); [L27] int lk7; [L29] int p8 = __VERIFIER_nondet_int(); [L30] int lk8; [L32] int p9 = __VERIFIER_nondet_int(); [L33] int lk9; [L35] int p10 = __VERIFIER_nondet_int(); [L36] int lk10; [L38] int p11 = __VERIFIER_nondet_int(); [L39] int lk11; [L41] int p12 = __VERIFIER_nondet_int(); [L42] int lk12; [L44] int p13 = __VERIFIER_nondet_int(); [L45] int lk13; [L47] int p14 = __VERIFIER_nondet_int(); [L48] int lk14; [L50] int p15 = __VERIFIER_nondet_int(); [L51] int lk15; [L54] int cond; VAL [p1=0, p10=0, p11=2147483648, p12=2147483648, p13=2147483648, p14=2147483648, p15=2147483648, p2=0, p3=2147745792, p4=2147483648, p5=2147483648, p6=2147483648, p7=2147483648, p8=2147483648, p9=2147483648] [L56] COND TRUE 1 [L57] cond = __VERIFIER_nondet_int() [L58] COND FALSE !(cond == 0) [L61] lk1 = 0 [L63] lk2 = 0 [L65] lk3 = 0 [L67] lk4 = 0 [L69] lk5 = 0 [L71] lk6 = 0 [L73] lk7 = 0 [L75] lk8 = 0 [L77] lk9 = 0 [L79] lk10 = 0 [L81] lk11 = 0 [L83] lk12 = 0 [L85] lk13 = 0 [L87] lk14 = 0 [L89] lk15 = 0 VAL [cond=2147483648, lk1=0, lk10=0, lk11=0, lk12=0, lk13=0, lk14=0, lk15=0, lk2=0, lk3=0, lk4=0, lk5=0, lk6=0, lk7=0, lk8=0, lk9=0, p1=0, p10=0, p11=2147483648, p12=2147483648, p13=2147483648, p14=2147483648, p15=2147483648, p2=0, p3=2147745792, p4=2147483648, p5=2147483648, p6=2147483648, p7=2147483648, p8=2147483648, p9=2147483648] [L93] COND FALSE !(p1 != 0) VAL [cond=2147483648, lk1=0, lk10=0, lk11=0, lk12=0, lk13=0, lk14=0, lk15=0, lk2=0, lk3=0, lk4=0, lk5=0, lk6=0, lk7=0, lk8=0, lk9=0, p1=0, p10=0, p11=2147483648, p12=2147483648, p13=2147483648, p14=2147483648, p15=2147483648, p2=0, p3=2147745792, p4=2147483648, p5=2147483648, p6=2147483648, p7=2147483648, p8=2147483648, p9=2147483648] [L97] COND FALSE !(p2 != 0) VAL [cond=2147483648, lk1=0, lk10=0, lk11=0, lk12=0, lk13=0, lk14=0, lk15=0, lk2=0, lk3=0, lk4=0, lk5=0, lk6=0, lk7=0, lk8=0, lk9=0, p1=0, p10=0, p11=2147483648, p12=2147483648, p13=2147483648, p14=2147483648, p15=2147483648, p2=0, p3=2147745792, p4=2147483648, p5=2147483648, p6=2147483648, p7=2147483648, p8=2147483648, p9=2147483648] [L101] COND TRUE p3 != 0 [L102] lk3 = 1 VAL [cond=2147483648, lk1=0, lk10=0, lk11=0, lk12=0, lk13=0, lk14=0, lk15=0, lk2=0, lk3=1, lk4=0, lk5=0, lk6=0, lk7=0, lk8=0, lk9=0, p1=0, p10=0, p11=2147483648, p12=2147483648, p13=2147483648, p14=2147483648, p15=2147483648, p2=0, p3=2147745792, p4=2147483648, p5=2147483648, p6=2147483648, p7=2147483648, p8=2147483648, p9=2147483648] [L105] COND TRUE p4 != 0 [L106] lk4 = 1 VAL [cond=2147483648, lk1=0, lk10=0, lk11=0, lk12=0, lk13=0, lk14=0, lk15=0, lk2=0, lk3=1, lk4=1, lk5=0, lk6=0, lk7=0, lk8=0, lk9=0, p1=0, p10=0, p11=2147483648, p12=2147483648, p13=2147483648, p14=2147483648, p15=2147483648, p2=0, p3=2147745792, p4=2147483648, p5=2147483648, p6=2147483648, p7=2147483648, p8=2147483648, p9=2147483648] [L109] COND TRUE p5 != 0 [L110] lk5 = 1 VAL [cond=2147483648, lk1=0, lk10=0, lk11=0, lk12=0, lk13=0, lk14=0, lk15=0, lk2=0, lk3=1, lk4=1, lk5=1, lk6=0, lk7=0, lk8=0, lk9=0, p1=0, p10=0, p11=2147483648, p12=2147483648, p13=2147483648, p14=2147483648, p15=2147483648, p2=0, p3=2147745792, p4=2147483648, p5=2147483648, p6=2147483648, p7=2147483648, p8=2147483648, p9=2147483648] [L113] COND TRUE p6 != 0 [L114] lk6 = 1 VAL [cond=2147483648, lk1=0, lk10=0, lk11=0, lk12=0, lk13=0, lk14=0, lk15=0, lk2=0, lk3=1, lk4=1, lk5=1, lk6=1, lk7=0, lk8=0, lk9=0, p1=0, p10=0, p11=2147483648, p12=2147483648, p13=2147483648, p14=2147483648, p15=2147483648, p2=0, p3=2147745792, p4=2147483648, p5=2147483648, p6=2147483648, p7=2147483648, p8=2147483648, p9=2147483648] [L117] COND TRUE p7 != 0 [L118] lk7 = 1 VAL [cond=2147483648, lk1=0, lk10=0, lk11=0, lk12=0, lk13=0, lk14=0, lk15=0, lk2=0, lk3=1, lk4=1, lk5=1, lk6=1, lk7=1, lk8=0, lk9=0, p1=0, p10=0, p11=2147483648, p12=2147483648, p13=2147483648, p14=2147483648, p15=2147483648, p2=0, p3=2147745792, p4=2147483648, p5=2147483648, p6=2147483648, p7=2147483648, p8=2147483648, p9=2147483648] [L121] COND TRUE p8 != 0 [L122] lk8 = 1 VAL [cond=2147483648, lk1=0, lk10=0, lk11=0, lk12=0, lk13=0, lk14=0, lk15=0, lk2=0, lk3=1, lk4=1, lk5=1, lk6=1, lk7=1, lk8=1, lk9=0, p1=0, p10=0, p11=2147483648, p12=2147483648, p13=2147483648, p14=2147483648, p15=2147483648, p2=0, p3=2147745792, p4=2147483648, p5=2147483648, p6=2147483648, p7=2147483648, p8=2147483648, p9=2147483648] [L125] COND TRUE p9 != 0 [L126] lk9 = 1 VAL [cond=2147483648, lk1=0, lk10=0, lk11=0, lk12=0, lk13=0, lk14=0, lk15=0, lk2=0, lk3=1, lk4=1, lk5=1, lk6=1, lk7=1, lk8=1, lk9=1, p1=0, p10=0, p11=2147483648, p12=2147483648, p13=2147483648, p14=2147483648, p15=2147483648, p2=0, p3=2147745792, p4=2147483648, p5=2147483648, p6=2147483648, p7=2147483648, p8=2147483648, p9=2147483648] [L129] COND FALSE !(p10 != 0) VAL [cond=2147483648, lk1=0, lk10=0, lk11=0, lk12=0, lk13=0, lk14=0, lk15=0, lk2=0, lk3=1, lk4=1, lk5=1, lk6=1, lk7=1, lk8=1, lk9=1, p1=0, p10=0, p11=2147483648, p12=2147483648, p13=2147483648, p14=2147483648, p15=2147483648, p2=0, p3=2147745792, p4=2147483648, p5=2147483648, p6=2147483648, p7=2147483648, p8=2147483648, p9=2147483648] [L133] COND TRUE p11 != 0 [L134] lk11 = 1 VAL [cond=2147483648, lk1=0, lk10=0, lk11=1, lk12=0, lk13=0, lk14=0, lk15=0, lk2=0, lk3=1, lk4=1, lk5=1, lk6=1, lk7=1, lk8=1, lk9=1, p1=0, p10=0, p11=2147483648, p12=2147483648, p13=2147483648, p14=2147483648, p15=2147483648, p2=0, p3=2147745792, p4=2147483648, p5=2147483648, p6=2147483648, p7=2147483648, p8=2147483648, p9=2147483648] [L137] COND TRUE p12 != 0 [L138] lk12 = 1 VAL [cond=2147483648, lk1=0, lk10=0, lk11=1, lk12=1, lk13=0, lk14=0, lk15=0, lk2=0, lk3=1, lk4=1, lk5=1, lk6=1, lk7=1, lk8=1, lk9=1, p1=0, p10=0, p11=2147483648, p12=2147483648, p13=2147483648, p14=2147483648, p15=2147483648, p2=0, p3=2147745792, p4=2147483648, p5=2147483648, p6=2147483648, p7=2147483648, p8=2147483648, p9=2147483648] [L141] COND TRUE p13 != 0 [L142] lk13 = 1 VAL [cond=2147483648, lk1=0, lk10=0, lk11=1, lk12=1, lk13=1, lk14=0, lk15=0, lk2=0, lk3=1, lk4=1, lk5=1, lk6=1, lk7=1, lk8=1, lk9=1, p1=0, p10=0, p11=2147483648, p12=2147483648, p13=2147483648, p14=2147483648, p15=2147483648, p2=0, p3=2147745792, p4=2147483648, p5=2147483648, p6=2147483648, p7=2147483648, p8=2147483648, p9=2147483648] [L145] COND TRUE p14 != 0 [L146] lk14 = 1 VAL [cond=2147483648, lk1=0, lk10=0, lk11=1, lk12=1, lk13=1, lk14=1, lk15=0, lk2=0, lk3=1, lk4=1, lk5=1, lk6=1, lk7=1, lk8=1, lk9=1, p1=0, p10=0, p11=2147483648, p12=2147483648, p13=2147483648, p14=2147483648, p15=2147483648, p2=0, p3=2147745792, p4=2147483648, p5=2147483648, p6=2147483648, p7=2147483648, p8=2147483648, p9=2147483648] [L149] COND TRUE p15 != 0 [L150] lk15 = 1 VAL [cond=2147483648, lk1=0, lk10=0, lk11=1, lk12=1, lk13=1, lk14=1, lk15=1, lk2=0, lk3=1, lk4=1, lk5=1, lk6=1, lk7=1, lk8=1, lk9=1, p1=0, p10=0, p11=2147483648, p12=2147483648, p13=2147483648, p14=2147483648, p15=2147483648, p2=0, p3=2147745792, p4=2147483648, p5=2147483648, p6=2147483648, p7=2147483648, p8=2147483648, p9=2147483648] [L155] COND FALSE !(p1 != 0) VAL [cond=2147483648, lk1=0, lk10=0, lk11=1, lk12=1, lk13=1, lk14=1, lk15=1, lk2=0, lk3=1, lk4=1, lk5=1, lk6=1, lk7=1, lk8=1, lk9=1, p1=0, p10=0, p11=2147483648, p12=2147483648, p13=2147483648, p14=2147483648, p15=2147483648, p2=0, p3=2147745792, p4=2147483648, p5=2147483648, p6=2147483648, p7=2147483648, p8=2147483648, p9=2147483648] [L160] COND FALSE !(p2 != 0) VAL [cond=2147483648, lk1=0, lk10=0, lk11=1, lk12=1, lk13=1, lk14=1, lk15=1, lk2=0, lk3=1, lk4=1, lk5=1, lk6=1, lk7=1, lk8=1, lk9=1, p1=0, p10=0, p11=2147483648, p12=2147483648, p13=2147483648, p14=2147483648, p15=2147483648, p2=0, p3=2147745792, p4=2147483648, p5=2147483648, p6=2147483648, p7=2147483648, p8=2147483648, p9=2147483648] [L233] CALL reach_error() [L3] __assert_fail("0", "test_locks_15-1.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 65 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 2.2s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 491 SDtfs, 220 SDslu, 282 SDs, 0 SdLazy, 16 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 176 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=105occurred 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: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 33 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 117 NumberOfCodeBlocks, 117 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 172 ConstructedInterpolants, 0 QuantifiedInterpolants, 9748 SizeOfPredicates, 0 NumberOfNonLiveVariables, 403 ConjunctsInSsa, 7 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 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...