./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/locks/test_locks_7.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_dd42a10e-4efc-4970-a1d3-486c4d5113b8/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_dd42a10e-4efc-4970-a1d3-486c4d5113b8/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_dd42a10e-4efc-4970-a1d3-486c4d5113b8/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_dd42a10e-4efc-4970-a1d3-486c4d5113b8/bin/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/locks/test_locks_7.c -s /tmp/vcloud-vcloud-master/worker/run_dir_dd42a10e-4efc-4970-a1d3-486c4d5113b8/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_dd42a10e-4efc-4970-a1d3-486c4d5113b8/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash d2a1f90505878c0035f7701a954d17ca4375eb05 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-28 03:10:49,555 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 03:10:49,557 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 03:10:49,619 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 03:10:49,620 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 03:10:49,621 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 03:10:49,648 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 03:10:49,651 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 03:10:49,653 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 03:10:49,654 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 03:10:49,656 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 03:10:49,657 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 03:10:49,658 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 03:10:49,659 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 03:10:49,660 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 03:10:49,662 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 03:10:49,664 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 03:10:49,665 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 03:10:49,667 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 03:10:49,670 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 03:10:49,672 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 03:10:49,673 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 03:10:49,675 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 03:10:49,676 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 03:10:49,679 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 03:10:49,680 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 03:10:49,680 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 03:10:49,681 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 03:10:49,682 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 03:10:49,683 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 03:10:49,684 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 03:10:49,685 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 03:10:49,686 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 03:10:49,687 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 03:10:49,688 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 03:10:49,689 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 03:10:49,689 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 03:10:49,690 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 03:10:49,690 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 03:10:49,691 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 03:10:49,692 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 03:10:49,693 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_dd42a10e-4efc-4970-a1d3-486c4d5113b8/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2020-11-28 03:10:49,718 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 03:10:49,719 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 03:10:49,720 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 03:10:49,720 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 03:10:49,721 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 03:10:49,721 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 03:10:49,721 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 03:10:49,721 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-28 03:10:49,721 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 03:10:49,722 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 03:10:49,722 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 03:10:49,722 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-11-28 03:10:49,722 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-11-28 03:10:49,722 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-11-28 03:10:49,723 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 03:10:49,723 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-28 03:10:49,723 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 03:10:49,723 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 03:10:49,724 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 03:10:49,724 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 03:10:49,724 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 03:10:49,724 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 03:10:49,724 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 03:10:49,725 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 03:10:49,725 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 03:10:49,725 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-28 03:10:49,725 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 03:10:49,725 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 03:10:49,726 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_dd42a10e-4efc-4970-a1d3-486c4d5113b8/bin/uautomizer/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_dd42a10e-4efc-4970-a1d3-486c4d5113b8/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d2a1f90505878c0035f7701a954d17ca4375eb05 [2020-11-28 03:10:50,022 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 03:10:50,066 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 03:10:50,069 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 03:10:50,071 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 03:10:50,072 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 03:10:50,073 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_dd42a10e-4efc-4970-a1d3-486c4d5113b8/bin/uautomizer/../../sv-benchmarks/c/locks/test_locks_7.c [2020-11-28 03:10:50,162 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_dd42a10e-4efc-4970-a1d3-486c4d5113b8/bin/uautomizer/data/432ec4a09/168b4d2727a84a97bf497664757d2703/FLAG1911a17ee [2020-11-28 03:10:50,590 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 03:10:50,590 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_dd42a10e-4efc-4970-a1d3-486c4d5113b8/sv-benchmarks/c/locks/test_locks_7.c [2020-11-28 03:10:50,617 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_dd42a10e-4efc-4970-a1d3-486c4d5113b8/bin/uautomizer/data/432ec4a09/168b4d2727a84a97bf497664757d2703/FLAG1911a17ee [2020-11-28 03:10:50,988 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_dd42a10e-4efc-4970-a1d3-486c4d5113b8/bin/uautomizer/data/432ec4a09/168b4d2727a84a97bf497664757d2703 [2020-11-28 03:10:50,991 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 03:10:50,993 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-11-28 03:10:50,997 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 03:10:50,997 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 03:10:51,001 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 03:10:51,003 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:10:50" (1/1) ... [2020-11-28 03:10:51,011 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e9ada40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:10:51, skipping insertion in model container [2020-11-28 03:10:51,011 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:10:50" (1/1) ... [2020-11-28 03:10:51,020 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 03:10:51,048 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 03:10:51,236 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:10:51,246 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 03:10:51,268 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:10:51,282 INFO L208 MainTranslator]: Completed translation [2020-11-28 03:10:51,282 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:10:51 WrapperNode [2020-11-28 03:10:51,282 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 03:10:51,284 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 03:10:51,284 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 03:10:51,284 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 03:10:51,296 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:10:51" (1/1) ... [2020-11-28 03:10:51,297 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:10:51" (1/1) ... [2020-11-28 03:10:51,303 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:10:51" (1/1) ... [2020-11-28 03:10:51,304 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:10:51" (1/1) ... [2020-11-28 03:10:51,310 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:10:51" (1/1) ... [2020-11-28 03:10:51,316 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:10:51" (1/1) ... [2020-11-28 03:10:51,318 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:10:51" (1/1) ... [2020-11-28 03:10:51,320 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 03:10:51,321 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 03:10:51,321 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 03:10:51,321 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 03:10:51,322 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:10:51" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_dd42a10e-4efc-4970-a1d3-486c4d5113b8/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 03:10:51,415 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-28 03:10:51,416 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 03:10:51,416 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-28 03:10:51,416 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-28 03:10:51,416 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-28 03:10:51,416 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-28 03:10:51,417 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-28 03:10:51,417 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 03:10:51,417 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-11-28 03:10:51,417 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-28 03:10:51,418 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-28 03:10:51,418 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 03:10:51,418 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 03:10:51,418 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-28 03:10:51,418 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-28 03:10:51,418 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-28 03:10:52,050 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 03:10:52,054 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-11-28 03:10:52,057 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:10:52 BoogieIcfgContainer [2020-11-28 03:10:52,057 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 03:10:52,059 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 03:10:52,059 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 03:10:52,063 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 03:10:52,063 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:10:50" (1/3) ... [2020-11-28 03:10:52,064 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1579d1ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:10:52, skipping insertion in model container [2020-11-28 03:10:52,064 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:10:51" (2/3) ... [2020-11-28 03:10:52,065 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1579d1ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:10:52, skipping insertion in model container [2020-11-28 03:10:52,065 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:10:52" (3/3) ... [2020-11-28 03:10:52,066 INFO L111 eAbstractionObserver]: Analyzing ICFG test_locks_7.c [2020-11-28 03:10:52,078 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 03:10:52,083 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-11-28 03:10:52,095 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-11-28 03:10:52,126 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 03:10:52,127 INFO L378 AbstractCegarLoop]: Hoare is false [2020-11-28 03:10:52,127 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 03:10:52,127 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 03:10:52,127 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 03:10:52,127 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 03:10:52,128 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 03:10:52,128 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 03:10:52,146 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states. [2020-11-28 03:10:52,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-28 03:10:52,155 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:10:52,156 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:10:52,157 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-28 03:10:52,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:10:52,162 INFO L82 PathProgramCache]: Analyzing trace with hash -374442078, now seen corresponding path program 1 times [2020-11-28 03:10:52,169 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:10:52,170 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897346997] [2020-11-28 03:10:52,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:10:52,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:52,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 03:10:52,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:52,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:10:52,425 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897346997] [2020-11-28 03:10:52,426 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:10:52,427 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 03:10:52,428 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443886679] [2020-11-28 03:10:52,432 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 03:10:52,433 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:10:52,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 03:10:52,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:10:52,450 INFO L87 Difference]: Start difference. First operand 41 states. Second operand 3 states. [2020-11-28 03:10:52,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:10:52,508 INFO L93 Difference]: Finished difference Result 37 states and 57 transitions. [2020-11-28 03:10:52,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 03:10:52,510 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-11-28 03:10:52,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:10:52,520 INFO L225 Difference]: With dead ends: 37 [2020-11-28 03:10:52,520 INFO L226 Difference]: Without dead ends: 32 [2020-11-28 03:10:52,522 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:10:52,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-11-28 03:10:52,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2020-11-28 03:10:52,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-11-28 03:10:52,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 52 transitions. [2020-11-28 03:10:52,558 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 52 transitions. Word has length 9 [2020-11-28 03:10:52,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:10:52,559 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 52 transitions. [2020-11-28 03:10:52,559 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 03:10:52,559 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 52 transitions. [2020-11-28 03:10:52,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-11-28 03:10:52,560 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:10:52,560 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:10:52,561 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 03:10:52,561 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-28 03:10:52,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:10:52,562 INFO L82 PathProgramCache]: Analyzing trace with hash 1509280444, now seen corresponding path program 1 times [2020-11-28 03:10:52,562 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:10:52,562 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892355554] [2020-11-28 03:10:52,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:10:52,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:52,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 03:10:52,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:52,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:10:52,714 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892355554] [2020-11-28 03:10:52,715 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:10:52,715 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 03:10:52,715 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582117681] [2020-11-28 03:10:52,716 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 03:10:52,717 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:10:52,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 03:10:52,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 03:10:52,718 INFO L87 Difference]: Start difference. First operand 32 states and 52 transitions. Second operand 4 states. [2020-11-28 03:10:52,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:10:52,980 INFO L93 Difference]: Finished difference Result 55 states and 94 transitions. [2020-11-28 03:10:52,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 03:10:52,981 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2020-11-28 03:10:52,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:10:52,983 INFO L225 Difference]: With dead ends: 55 [2020-11-28 03:10:52,983 INFO L226 Difference]: Without dead ends: 55 [2020-11-28 03:10:52,985 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:10:52,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-11-28 03:10:52,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 40. [2020-11-28 03:10:52,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-11-28 03:10:52,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 67 transitions. [2020-11-28 03:10:52,998 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 67 transitions. Word has length 19 [2020-11-28 03:10:52,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:10:52,999 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 67 transitions. [2020-11-28 03:10:52,999 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 03:10:52,999 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 67 transitions. [2020-11-28 03:10:53,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-11-28 03:10:53,000 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:10:53,000 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:10:53,001 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-28 03:10:53,001 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-28 03:10:53,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:10:53,003 INFO L82 PathProgramCache]: Analyzing trace with hash -2084622274, now seen corresponding path program 1 times [2020-11-28 03:10:53,003 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:10:53,005 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129724673] [2020-11-28 03:10:53,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:10:53,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:53,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 03:10:53,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:53,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:10:53,134 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129724673] [2020-11-28 03:10:53,134 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:10:53,134 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 03:10:53,134 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819719067] [2020-11-28 03:10:53,135 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 03:10:53,135 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:10:53,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 03:10:53,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 03:10:53,136 INFO L87 Difference]: Start difference. First operand 40 states and 67 transitions. Second operand 4 states. [2020-11-28 03:10:53,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:10:53,298 INFO L93 Difference]: Finished difference Result 55 states and 92 transitions. [2020-11-28 03:10:53,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 03:10:53,299 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2020-11-28 03:10:53,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:10:53,301 INFO L225 Difference]: With dead ends: 55 [2020-11-28 03:10:53,301 INFO L226 Difference]: Without dead ends: 55 [2020-11-28 03:10:53,301 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 [2020-11-28 03:10:53,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-11-28 03:10:53,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 54. [2020-11-28 03:10:53,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-11-28 03:10:53,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 91 transitions. [2020-11-28 03:10:53,318 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 91 transitions. Word has length 19 [2020-11-28 03:10:53,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:10:53,319 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 91 transitions. [2020-11-28 03:10:53,319 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 03:10:53,319 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 91 transitions. [2020-11-28 03:10:53,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-11-28 03:10:53,321 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:10:53,321 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] [2020-11-28 03:10:53,321 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-28 03:10:53,322 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-28 03:10:53,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:10:53,322 INFO L82 PathProgramCache]: Analyzing trace with hash -450308896, now seen corresponding path program 1 times [2020-11-28 03:10:53,323 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:10:53,323 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622942937] [2020-11-28 03:10:53,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:10:53,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:53,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 03:10:53,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:53,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:10:53,495 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622942937] [2020-11-28 03:10:53,495 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:10:53,495 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 03:10:53,496 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651756198] [2020-11-28 03:10:53,496 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 03:10:53,496 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:10:53,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 03:10:53,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 03:10:53,497 INFO L87 Difference]: Start difference. First operand 54 states and 91 transitions. Second operand 4 states. [2020-11-28 03:10:53,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:10:53,673 INFO L93 Difference]: Finished difference Result 58 states and 94 transitions. [2020-11-28 03:10:53,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 03:10:53,674 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2020-11-28 03:10:53,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:10:53,676 INFO L225 Difference]: With dead ends: 58 [2020-11-28 03:10:53,676 INFO L226 Difference]: Without dead ends: 58 [2020-11-28 03:10:53,676 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:10:53,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-11-28 03:10:53,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 57. [2020-11-28 03:10:53,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-11-28 03:10:53,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 93 transitions. [2020-11-28 03:10:53,694 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 93 transitions. Word has length 20 [2020-11-28 03:10:53,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:10:53,694 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 93 transitions. [2020-11-28 03:10:53,694 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 03:10:53,695 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 93 transitions. [2020-11-28 03:10:53,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-11-28 03:10:53,696 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:10:53,696 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:10:53,696 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-28 03:10:53,696 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-28 03:10:53,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:10:53,697 INFO L82 PathProgramCache]: Analyzing trace with hash -192143458, now seen corresponding path program 1 times [2020-11-28 03:10:53,697 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:10:53,697 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635088799] [2020-11-28 03:10:53,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:10:53,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:53,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 03:10:53,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:53,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:10:53,818 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635088799] [2020-11-28 03:10:53,818 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:10:53,818 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 03:10:53,818 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397403302] [2020-11-28 03:10:53,820 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 03:10:53,820 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:10:53,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 03:10:53,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 03:10:53,826 INFO L87 Difference]: Start difference. First operand 57 states and 93 transitions. Second operand 4 states. [2020-11-28 03:10:54,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:10:54,053 INFO L93 Difference]: Finished difference Result 101 states and 167 transitions. [2020-11-28 03:10:54,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 03:10:54,053 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2020-11-28 03:10:54,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:10:54,055 INFO L225 Difference]: With dead ends: 101 [2020-11-28 03:10:54,055 INFO L226 Difference]: Without dead ends: 101 [2020-11-28 03:10:54,056 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:10:54,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2020-11-28 03:10:54,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 100. [2020-11-28 03:10:54,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-11-28 03:10:54,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 166 transitions. [2020-11-28 03:10:54,074 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 166 transitions. Word has length 20 [2020-11-28 03:10:54,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:10:54,074 INFO L481 AbstractCegarLoop]: Abstraction has 100 states and 166 transitions. [2020-11-28 03:10:54,074 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 03:10:54,074 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 166 transitions. [2020-11-28 03:10:54,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-11-28 03:10:54,075 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:10:54,076 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:10:54,076 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-28 03:10:54,076 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-28 03:10:54,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:10:54,077 INFO L82 PathProgramCache]: Analyzing trace with hash -893208036, now seen corresponding path program 1 times [2020-11-28 03:10:54,077 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:10:54,077 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050443628] [2020-11-28 03:10:54,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:10:54,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:54,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 03:10:54,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:54,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:10:54,180 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050443628] [2020-11-28 03:10:54,180 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:10:54,180 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 03:10:54,181 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487233952] [2020-11-28 03:10:54,181 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 03:10:54,181 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:10:54,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 03:10:54,184 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 03:10:54,184 INFO L87 Difference]: Start difference. First operand 100 states and 166 transitions. Second operand 4 states. [2020-11-28 03:10:54,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:10:54,375 INFO L93 Difference]: Finished difference Result 125 states and 209 transitions. [2020-11-28 03:10:54,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 03:10:54,376 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2020-11-28 03:10:54,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:10:54,378 INFO L225 Difference]: With dead ends: 125 [2020-11-28 03:10:54,378 INFO L226 Difference]: Without dead ends: 125 [2020-11-28 03:10:54,379 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 [2020-11-28 03:10:54,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2020-11-28 03:10:54,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 100. [2020-11-28 03:10:54,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-11-28 03:10:54,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 164 transitions. [2020-11-28 03:10:54,388 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 164 transitions. Word has length 20 [2020-11-28 03:10:54,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:10:54,389 INFO L481 AbstractCegarLoop]: Abstraction has 100 states and 164 transitions. [2020-11-28 03:10:54,389 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 03:10:54,389 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 164 transitions. [2020-11-28 03:10:54,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-11-28 03:10:54,391 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:10:54,391 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] [2020-11-28 03:10:54,391 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-28 03:10:54,391 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-28 03:10:54,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:10:54,392 INFO L82 PathProgramCache]: Analyzing trace with hash -1654831735, now seen corresponding path program 1 times [2020-11-28 03:10:54,392 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:10:54,393 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730259166] [2020-11-28 03:10:54,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:10:54,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:54,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 03:10:54,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:54,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:10:54,462 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730259166] [2020-11-28 03:10:54,462 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:10:54,462 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 03:10:54,462 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672979296] [2020-11-28 03:10:54,463 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 03:10:54,463 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:10:54,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 03:10:54,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 03:10:54,464 INFO L87 Difference]: Start difference. First operand 100 states and 164 transitions. Second operand 4 states. [2020-11-28 03:10:54,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:10:54,601 INFO L93 Difference]: Finished difference Result 177 states and 295 transitions. [2020-11-28 03:10:54,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 03:10:54,602 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 21 [2020-11-28 03:10:54,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:10:54,604 INFO L225 Difference]: With dead ends: 177 [2020-11-28 03:10:54,604 INFO L226 Difference]: Without dead ends: 177 [2020-11-28 03:10:54,604 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 [2020-11-28 03:10:54,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2020-11-28 03:10:54,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 136. [2020-11-28 03:10:54,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-11-28 03:10:54,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 222 transitions. [2020-11-28 03:10:54,623 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 222 transitions. Word has length 21 [2020-11-28 03:10:54,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:10:54,623 INFO L481 AbstractCegarLoop]: Abstraction has 136 states and 222 transitions. [2020-11-28 03:10:54,624 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 03:10:54,624 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 222 transitions. [2020-11-28 03:10:54,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-11-28 03:10:54,628 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:10:54,629 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] [2020-11-28 03:10:54,629 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-28 03:10:54,629 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-28 03:10:54,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:10:54,630 INFO L82 PathProgramCache]: Analyzing trace with hash -953767157, now seen corresponding path program 1 times [2020-11-28 03:10:54,630 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:10:54,631 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376379670] [2020-11-28 03:10:54,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:10:54,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:54,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 03:10:54,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:54,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:10:54,725 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376379670] [2020-11-28 03:10:54,726 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:10:54,726 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 03:10:54,726 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612166880] [2020-11-28 03:10:54,727 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 03:10:54,727 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:10:54,727 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 03:10:54,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 03:10:54,728 INFO L87 Difference]: Start difference. First operand 136 states and 222 transitions. Second operand 4 states. [2020-11-28 03:10:54,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:10:54,889 INFO L93 Difference]: Finished difference Result 185 states and 297 transitions. [2020-11-28 03:10:54,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 03:10:54,890 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 21 [2020-11-28 03:10:54,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:10:54,891 INFO L225 Difference]: With dead ends: 185 [2020-11-28 03:10:54,891 INFO L226 Difference]: Without dead ends: 185 [2020-11-28 03:10:54,892 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 [2020-11-28 03:10:54,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2020-11-28 03:10:54,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 184. [2020-11-28 03:10:54,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 184 states. [2020-11-28 03:10:54,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 296 transitions. [2020-11-28 03:10:54,917 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 296 transitions. Word has length 21 [2020-11-28 03:10:54,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:10:54,918 INFO L481 AbstractCegarLoop]: Abstraction has 184 states and 296 transitions. [2020-11-28 03:10:54,918 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 03:10:54,918 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 296 transitions. [2020-11-28 03:10:54,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-11-28 03:10:54,921 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:10:54,924 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:10:54,924 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-28 03:10:54,925 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-28 03:10:54,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:10:54,925 INFO L82 PathProgramCache]: Analyzing trace with hash 246482505, now seen corresponding path program 1 times [2020-11-28 03:10:54,926 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:10:54,926 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824566122] [2020-11-28 03:10:54,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:10:54,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:55,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 03:10:55,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:55,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:10:55,017 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824566122] [2020-11-28 03:10:55,017 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:10:55,017 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 03:10:55,020 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512847223] [2020-11-28 03:10:55,020 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 03:10:55,021 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:10:55,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 03:10:55,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 03:10:55,026 INFO L87 Difference]: Start difference. First operand 184 states and 296 transitions. Second operand 4 states. [2020-11-28 03:10:55,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:10:55,199 INFO L93 Difference]: Finished difference Result 191 states and 301 transitions. [2020-11-28 03:10:55,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 03:10:55,200 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2020-11-28 03:10:55,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:10:55,201 INFO L225 Difference]: With dead ends: 191 [2020-11-28 03:10:55,202 INFO L226 Difference]: Without dead ends: 191 [2020-11-28 03:10:55,202 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 [2020-11-28 03:10:55,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2020-11-28 03:10:55,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 190. [2020-11-28 03:10:55,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 190 states. [2020-11-28 03:10:55,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 300 transitions. [2020-11-28 03:10:55,214 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 300 transitions. Word has length 22 [2020-11-28 03:10:55,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:10:55,215 INFO L481 AbstractCegarLoop]: Abstraction has 190 states and 300 transitions. [2020-11-28 03:10:55,226 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 03:10:55,226 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 300 transitions. [2020-11-28 03:10:55,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-11-28 03:10:55,227 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:10:55,227 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:10:55,228 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-28 03:10:55,228 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-28 03:10:55,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:10:55,234 INFO L82 PathProgramCache]: Analyzing trace with hash 504647943, now seen corresponding path program 1 times [2020-11-28 03:10:55,234 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:10:55,234 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021837228] [2020-11-28 03:10:55,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:10:55,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:55,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 03:10:55,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:55,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:10:55,292 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021837228] [2020-11-28 03:10:55,292 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:10:55,292 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 03:10:55,292 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048657388] [2020-11-28 03:10:55,292 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 03:10:55,293 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:10:55,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 03:10:55,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 03:10:55,294 INFO L87 Difference]: Start difference. First operand 190 states and 300 transitions. Second operand 4 states. [2020-11-28 03:10:55,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:10:55,433 INFO L93 Difference]: Finished difference Result 331 states and 525 transitions. [2020-11-28 03:10:55,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 03:10:55,434 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2020-11-28 03:10:55,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:10:55,436 INFO L225 Difference]: With dead ends: 331 [2020-11-28 03:10:55,437 INFO L226 Difference]: Without dead ends: 331 [2020-11-28 03:10:55,437 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 [2020-11-28 03:10:55,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2020-11-28 03:10:55,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 266. [2020-11-28 03:10:55,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 266 states. [2020-11-28 03:10:55,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 412 transitions. [2020-11-28 03:10:55,448 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 412 transitions. Word has length 22 [2020-11-28 03:10:55,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:10:55,448 INFO L481 AbstractCegarLoop]: Abstraction has 266 states and 412 transitions. [2020-11-28 03:10:55,448 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 03:10:55,449 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 412 transitions. [2020-11-28 03:10:55,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-11-28 03:10:55,450 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:10:55,450 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:10:55,450 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-11-28 03:10:55,451 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-28 03:10:55,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:10:55,451 INFO L82 PathProgramCache]: Analyzing trace with hash 1205712521, now seen corresponding path program 1 times [2020-11-28 03:10:55,451 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:10:55,452 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275065923] [2020-11-28 03:10:55,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:10:55,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:55,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 03:10:55,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:55,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:10:55,521 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275065923] [2020-11-28 03:10:55,521 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:10:55,521 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 03:10:55,522 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185565782] [2020-11-28 03:10:55,522 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 03:10:55,522 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:10:55,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 03:10:55,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 03:10:55,523 INFO L87 Difference]: Start difference. First operand 266 states and 412 transitions. Second operand 4 states. [2020-11-28 03:10:55,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:10:55,684 INFO L93 Difference]: Finished difference Result 355 states and 537 transitions. [2020-11-28 03:10:55,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 03:10:55,684 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2020-11-28 03:10:55,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:10:55,687 INFO L225 Difference]: With dead ends: 355 [2020-11-28 03:10:55,687 INFO L226 Difference]: Without dead ends: 355 [2020-11-28 03:10:55,688 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 [2020-11-28 03:10:55,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states. [2020-11-28 03:10:55,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 354. [2020-11-28 03:10:55,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 354 states. [2020-11-28 03:10:55,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 354 states to 354 states and 536 transitions. [2020-11-28 03:10:55,700 INFO L78 Accepts]: Start accepts. Automaton has 354 states and 536 transitions. Word has length 22 [2020-11-28 03:10:55,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:10:55,700 INFO L481 AbstractCegarLoop]: Abstraction has 354 states and 536 transitions. [2020-11-28 03:10:55,700 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 03:10:55,700 INFO L276 IsEmpty]: Start isEmpty. Operand 354 states and 536 transitions. [2020-11-28 03:10:55,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-11-28 03:10:55,702 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:10:55,702 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] [2020-11-28 03:10:55,702 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-11-28 03:10:55,702 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-28 03:10:55,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:10:55,703 INFO L82 PathProgramCache]: Analyzing trace with hash -1529113642, now seen corresponding path program 1 times [2020-11-28 03:10:55,703 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:10:55,703 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715680868] [2020-11-28 03:10:55,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:10:55,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:55,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 03:10:55,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:55,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:10:55,774 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715680868] [2020-11-28 03:10:55,774 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:10:55,774 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 03:10:55,775 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673997799] [2020-11-28 03:10:55,775 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 03:10:55,775 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:10:55,775 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 03:10:55,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 03:10:55,776 INFO L87 Difference]: Start difference. First operand 354 states and 536 transitions. Second operand 4 states. [2020-11-28 03:10:55,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:10:55,907 INFO L93 Difference]: Finished difference Result 363 states and 537 transitions. [2020-11-28 03:10:55,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 03:10:55,908 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2020-11-28 03:10:55,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:10:55,911 INFO L225 Difference]: With dead ends: 363 [2020-11-28 03:10:55,911 INFO L226 Difference]: Without dead ends: 363 [2020-11-28 03:10:55,911 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 [2020-11-28 03:10:55,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2020-11-28 03:10:55,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 362. [2020-11-28 03:10:55,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 362 states. [2020-11-28 03:10:55,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 362 states to 362 states and 536 transitions. [2020-11-28 03:10:55,924 INFO L78 Accepts]: Start accepts. Automaton has 362 states and 536 transitions. Word has length 23 [2020-11-28 03:10:55,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:10:55,926 INFO L481 AbstractCegarLoop]: Abstraction has 362 states and 536 transitions. [2020-11-28 03:10:55,926 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 03:10:55,927 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states and 536 transitions. [2020-11-28 03:10:55,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-11-28 03:10:55,930 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:10:55,930 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] [2020-11-28 03:10:55,930 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-11-28 03:10:55,931 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-28 03:10:55,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:10:55,932 INFO L82 PathProgramCache]: Analyzing trace with hash -1270948204, now seen corresponding path program 1 times [2020-11-28 03:10:55,932 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:10:55,935 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040256314] [2020-11-28 03:10:55,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:10:55,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:55,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 03:10:55,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:55,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:10:55,998 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040256314] [2020-11-28 03:10:55,998 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:10:55,999 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 03:10:55,999 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616397380] [2020-11-28 03:10:55,999 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 03:10:55,999 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:10:56,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 03:10:56,000 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 03:10:56,000 INFO L87 Difference]: Start difference. First operand 362 states and 536 transitions. Second operand 4 states. [2020-11-28 03:10:56,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:10:56,151 INFO L93 Difference]: Finished difference Result 619 states and 913 transitions. [2020-11-28 03:10:56,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 03:10:56,151 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2020-11-28 03:10:56,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:10:56,155 INFO L225 Difference]: With dead ends: 619 [2020-11-28 03:10:56,155 INFO L226 Difference]: Without dead ends: 619 [2020-11-28 03:10:56,156 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 [2020-11-28 03:10:56,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 619 states. [2020-11-28 03:10:56,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 619 to 522. [2020-11-28 03:10:56,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 522 states. [2020-11-28 03:10:56,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 522 states to 522 states and 752 transitions. [2020-11-28 03:10:56,172 INFO L78 Accepts]: Start accepts. Automaton has 522 states and 752 transitions. Word has length 23 [2020-11-28 03:10:56,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:10:56,173 INFO L481 AbstractCegarLoop]: Abstraction has 522 states and 752 transitions. [2020-11-28 03:10:56,173 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 03:10:56,173 INFO L276 IsEmpty]: Start isEmpty. Operand 522 states and 752 transitions. [2020-11-28 03:10:56,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-11-28 03:10:56,174 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:10:56,175 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] [2020-11-28 03:10:56,175 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-11-28 03:10:56,175 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-28 03:10:56,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:10:56,176 INFO L82 PathProgramCache]: Analyzing trace with hash -569883626, now seen corresponding path program 1 times [2020-11-28 03:10:56,176 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:10:56,176 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416669834] [2020-11-28 03:10:56,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:10:56,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:56,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 03:10:56,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:56,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:10:56,242 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416669834] [2020-11-28 03:10:56,242 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:10:56,243 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 03:10:56,243 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724074897] [2020-11-28 03:10:56,243 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 03:10:56,243 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:10:56,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 03:10:56,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 03:10:56,244 INFO L87 Difference]: Start difference. First operand 522 states and 752 transitions. Second operand 4 states. [2020-11-28 03:10:56,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:10:56,443 INFO L93 Difference]: Finished difference Result 683 states and 953 transitions. [2020-11-28 03:10:56,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 03:10:56,444 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2020-11-28 03:10:56,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:10:56,449 INFO L225 Difference]: With dead ends: 683 [2020-11-28 03:10:56,449 INFO L226 Difference]: Without dead ends: 683 [2020-11-28 03:10:56,451 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 [2020-11-28 03:10:56,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 683 states. [2020-11-28 03:10:56,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 683 to 682. [2020-11-28 03:10:56,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 682 states. [2020-11-28 03:10:56,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 682 states to 682 states and 952 transitions. [2020-11-28 03:10:56,473 INFO L78 Accepts]: Start accepts. Automaton has 682 states and 952 transitions. Word has length 23 [2020-11-28 03:10:56,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:10:56,473 INFO L481 AbstractCegarLoop]: Abstraction has 682 states and 952 transitions. [2020-11-28 03:10:56,473 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 03:10:56,474 INFO L276 IsEmpty]: Start isEmpty. Operand 682 states and 952 transitions. [2020-11-28 03:10:56,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-11-28 03:10:56,475 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:10:56,475 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:10:56,476 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-11-28 03:10:56,476 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-28 03:10:56,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:10:56,477 INFO L82 PathProgramCache]: Analyzing trace with hash -738008780, now seen corresponding path program 1 times [2020-11-28 03:10:56,477 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:10:56,477 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918368474] [2020-11-28 03:10:56,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:10:56,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:56,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 03:10:56,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:56,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:10:56,540 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918368474] [2020-11-28 03:10:56,540 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:10:56,540 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 03:10:56,541 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430723410] [2020-11-28 03:10:56,541 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 03:10:56,541 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:10:56,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 03:10:56,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 03:10:56,542 INFO L87 Difference]: Start difference. First operand 682 states and 952 transitions. Second operand 4 states. [2020-11-28 03:10:56,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:10:56,683 INFO L93 Difference]: Finished difference Result 699 states and 953 transitions. [2020-11-28 03:10:56,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 03:10:56,684 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2020-11-28 03:10:56,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:10:56,688 INFO L225 Difference]: With dead ends: 699 [2020-11-28 03:10:56,688 INFO L226 Difference]: Without dead ends: 699 [2020-11-28 03:10:56,689 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 [2020-11-28 03:10:56,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 699 states. [2020-11-28 03:10:56,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 699 to 698. [2020-11-28 03:10:56,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 698 states. [2020-11-28 03:10:56,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 698 states to 698 states and 952 transitions. [2020-11-28 03:10:56,716 INFO L78 Accepts]: Start accepts. Automaton has 698 states and 952 transitions. Word has length 24 [2020-11-28 03:10:56,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:10:56,717 INFO L481 AbstractCegarLoop]: Abstraction has 698 states and 952 transitions. [2020-11-28 03:10:56,717 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 03:10:56,717 INFO L276 IsEmpty]: Start isEmpty. Operand 698 states and 952 transitions. [2020-11-28 03:10:56,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-11-28 03:10:56,718 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:10:56,719 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:10:56,719 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-11-28 03:10:56,719 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-28 03:10:56,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:10:56,720 INFO L82 PathProgramCache]: Analyzing trace with hash -479843342, now seen corresponding path program 1 times [2020-11-28 03:10:56,720 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:10:56,720 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712845283] [2020-11-28 03:10:56,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:10:56,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:56,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 03:10:56,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:56,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:10:56,778 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712845283] [2020-11-28 03:10:56,779 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:10:56,779 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 03:10:56,779 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331415146] [2020-11-28 03:10:56,779 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 03:10:56,779 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:10:56,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 03:10:56,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 03:10:56,780 INFO L87 Difference]: Start difference. First operand 698 states and 952 transitions. Second operand 4 states. [2020-11-28 03:10:56,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:10:56,929 INFO L93 Difference]: Finished difference Result 1163 states and 1561 transitions. [2020-11-28 03:10:56,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 03:10:56,930 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2020-11-28 03:10:56,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:10:56,937 INFO L225 Difference]: With dead ends: 1163 [2020-11-28 03:10:56,938 INFO L226 Difference]: Without dead ends: 1163 [2020-11-28 03:10:56,938 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 [2020-11-28 03:10:56,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1163 states. [2020-11-28 03:10:56,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1163 to 1034. [2020-11-28 03:10:56,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1034 states. [2020-11-28 03:10:56,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1034 states to 1034 states and 1368 transitions. [2020-11-28 03:10:56,975 INFO L78 Accepts]: Start accepts. Automaton has 1034 states and 1368 transitions. Word has length 24 [2020-11-28 03:10:56,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:10:56,976 INFO L481 AbstractCegarLoop]: Abstraction has 1034 states and 1368 transitions. [2020-11-28 03:10:56,976 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 03:10:56,976 INFO L276 IsEmpty]: Start isEmpty. Operand 1034 states and 1368 transitions. [2020-11-28 03:10:56,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-11-28 03:10:56,980 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:10:56,980 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:10:56,980 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-11-28 03:10:56,980 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-28 03:10:56,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:10:56,981 INFO L82 PathProgramCache]: Analyzing trace with hash 221221236, now seen corresponding path program 1 times [2020-11-28 03:10:56,981 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:10:56,982 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852961430] [2020-11-28 03:10:56,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:10:56,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:57,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 03:10:57,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:57,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:10:57,048 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852961430] [2020-11-28 03:10:57,048 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:10:57,048 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 03:10:57,048 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888868072] [2020-11-28 03:10:57,048 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 03:10:57,049 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:10:57,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 03:10:57,049 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 03:10:57,049 INFO L87 Difference]: Start difference. First operand 1034 states and 1368 transitions. Second operand 4 states. [2020-11-28 03:10:57,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:10:57,199 INFO L93 Difference]: Finished difference Result 1323 states and 1673 transitions. [2020-11-28 03:10:57,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 03:10:57,200 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2020-11-28 03:10:57,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:10:57,208 INFO L225 Difference]: With dead ends: 1323 [2020-11-28 03:10:57,209 INFO L226 Difference]: Without dead ends: 1323 [2020-11-28 03:10:57,210 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 [2020-11-28 03:10:57,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1323 states. [2020-11-28 03:10:57,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1323 to 1322. [2020-11-28 03:10:57,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1322 states. [2020-11-28 03:10:57,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1322 states to 1322 states and 1672 transitions. [2020-11-28 03:10:57,247 INFO L78 Accepts]: Start accepts. Automaton has 1322 states and 1672 transitions. Word has length 24 [2020-11-28 03:10:57,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:10:57,249 INFO L481 AbstractCegarLoop]: Abstraction has 1322 states and 1672 transitions. [2020-11-28 03:10:57,249 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 03:10:57,249 INFO L276 IsEmpty]: Start isEmpty. Operand 1322 states and 1672 transitions. [2020-11-28 03:10:57,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-11-28 03:10:57,251 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:10:57,252 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] [2020-11-28 03:10:57,252 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-11-28 03:10:57,252 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-28 03:10:57,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:10:57,253 INFO L82 PathProgramCache]: Analyzing trace with hash -1983551263, now seen corresponding path program 1 times [2020-11-28 03:10:57,253 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:10:57,253 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370849250] [2020-11-28 03:10:57,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:10:57,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:57,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 03:10:57,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:57,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:10:57,313 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370849250] [2020-11-28 03:10:57,313 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:10:57,313 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 03:10:57,313 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592799362] [2020-11-28 03:10:57,316 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 03:10:57,316 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:10:57,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 03:10:57,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 03:10:57,317 INFO L87 Difference]: Start difference. First operand 1322 states and 1672 transitions. Second operand 4 states. [2020-11-28 03:10:57,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:10:57,487 INFO L93 Difference]: Finished difference Result 1355 states and 1673 transitions. [2020-11-28 03:10:57,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 03:10:57,487 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2020-11-28 03:10:57,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:10:57,495 INFO L225 Difference]: With dead ends: 1355 [2020-11-28 03:10:57,495 INFO L226 Difference]: Without dead ends: 1355 [2020-11-28 03:10:57,496 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 [2020-11-28 03:10:57,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1355 states. [2020-11-28 03:10:57,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1355 to 1354. [2020-11-28 03:10:57,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1354 states. [2020-11-28 03:10:57,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1354 states to 1354 states and 1672 transitions. [2020-11-28 03:10:57,543 INFO L78 Accepts]: Start accepts. Automaton has 1354 states and 1672 transitions. Word has length 25 [2020-11-28 03:10:57,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:10:57,543 INFO L481 AbstractCegarLoop]: Abstraction has 1354 states and 1672 transitions. [2020-11-28 03:10:57,543 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 03:10:57,543 INFO L276 IsEmpty]: Start isEmpty. Operand 1354 states and 1672 transitions. [2020-11-28 03:10:57,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-11-28 03:10:57,546 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:10:57,546 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] [2020-11-28 03:10:57,546 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-11-28 03:10:57,546 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-28 03:10:57,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:10:57,547 INFO L82 PathProgramCache]: Analyzing trace with hash -1725385825, now seen corresponding path program 1 times [2020-11-28 03:10:57,547 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:10:57,547 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486246343] [2020-11-28 03:10:57,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:10:57,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:57,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 03:10:57,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:57,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:10:57,607 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486246343] [2020-11-28 03:10:57,607 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:10:57,607 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 03:10:57,607 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864160931] [2020-11-28 03:10:57,607 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 03:10:57,608 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:10:57,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 03:10:57,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 03:10:57,608 INFO L87 Difference]: Start difference. First operand 1354 states and 1672 transitions. Second operand 4 states. [2020-11-28 03:10:57,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:10:57,741 INFO L93 Difference]: Finished difference Result 2186 states and 2600 transitions. [2020-11-28 03:10:57,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 03:10:57,742 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2020-11-28 03:10:57,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:10:57,753 INFO L225 Difference]: With dead ends: 2186 [2020-11-28 03:10:57,753 INFO L226 Difference]: Without dead ends: 2186 [2020-11-28 03:10:57,754 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 [2020-11-28 03:10:57,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2186 states. [2020-11-28 03:10:57,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2186 to 2058. [2020-11-28 03:10:57,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2058 states. [2020-11-28 03:10:57,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2058 states to 2058 states and 2472 transitions. [2020-11-28 03:10:57,806 INFO L78 Accepts]: Start accepts. Automaton has 2058 states and 2472 transitions. Word has length 25 [2020-11-28 03:10:57,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:10:57,806 INFO L481 AbstractCegarLoop]: Abstraction has 2058 states and 2472 transitions. [2020-11-28 03:10:57,806 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 03:10:57,807 INFO L276 IsEmpty]: Start isEmpty. Operand 2058 states and 2472 transitions. [2020-11-28 03:10:57,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-11-28 03:10:57,810 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:10:57,810 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] [2020-11-28 03:10:57,810 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-11-28 03:10:57,811 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-28 03:10:57,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:10:57,811 INFO L82 PathProgramCache]: Analyzing trace with hash -1024321247, now seen corresponding path program 1 times [2020-11-28 03:10:57,811 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:10:57,812 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024512610] [2020-11-28 03:10:57,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:10:57,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:57,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 03:10:57,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:57,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:10:57,857 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024512610] [2020-11-28 03:10:57,858 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:10:57,858 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 03:10:57,858 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884866224] [2020-11-28 03:10:57,858 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 03:10:57,859 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:10:57,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 03:10:57,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 03:10:57,859 INFO L87 Difference]: Start difference. First operand 2058 states and 2472 transitions. Second operand 4 states. [2020-11-28 03:10:58,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:10:58,007 INFO L93 Difference]: Finished difference Result 2567 states and 2886 transitions. [2020-11-28 03:10:58,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 03:10:58,008 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2020-11-28 03:10:58,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:10:58,008 INFO L225 Difference]: With dead ends: 2567 [2020-11-28 03:10:58,008 INFO L226 Difference]: Without dead ends: 0 [2020-11-28 03:10:58,009 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 [2020-11-28 03:10:58,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-28 03:10:58,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-28 03:10:58,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-28 03:10:58,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-28 03:10:58,009 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 25 [2020-11-28 03:10:58,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:10:58,010 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 03:10:58,010 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 03:10:58,010 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-28 03:10:58,010 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-28 03:10:58,010 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-11-28 03:10:58,014 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 03:10:58 BoogieIcfgContainer [2020-11-28 03:10:58,015 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 03:10:58,015 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 03:10:58,015 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 03:10:58,015 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 03:10:58,016 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:10:52" (3/4) ... [2020-11-28 03:10:58,019 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-28 03:10:58,026 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure reach_error [2020-11-28 03:10:58,026 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2020-11-28 03:10:58,027 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2020-11-28 03:10:58,032 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2020-11-28 03:10:58,033 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-28 03:10:58,033 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-11-28 03:10:58,033 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 03:10:58,083 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_dd42a10e-4efc-4970-a1d3-486c4d5113b8/bin/uautomizer/witness.graphml [2020-11-28 03:10:58,083 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 03:10:58,085 INFO L168 Benchmark]: Toolchain (without parser) took 7091.43 ms. Allocated memory was 109.1 MB in the beginning and 132.1 MB in the end (delta: 23.1 MB). Free memory was 73.8 MB in the beginning and 94.8 MB in the end (delta: -21.0 MB). Peak memory consumption was 1.9 MB. Max. memory is 16.1 GB. [2020-11-28 03:10:58,086 INFO L168 Benchmark]: CDTParser took 0.54 ms. Allocated memory is still 109.1 MB. Free memory was 81.9 MB in the beginning and 81.9 MB in the end (delta: 27.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:10:58,086 INFO L168 Benchmark]: CACSL2BoogieTranslator took 285.70 ms. Allocated memory is still 109.1 MB. Free memory was 73.7 MB in the beginning and 84.4 MB in the end (delta: -10.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-28 03:10:58,087 INFO L168 Benchmark]: Boogie Preprocessor took 36.68 ms. Allocated memory is still 109.1 MB. Free memory was 84.4 MB in the beginning and 82.9 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:10:58,087 INFO L168 Benchmark]: RCFGBuilder took 736.12 ms. Allocated memory is still 109.1 MB. Free memory was 82.9 MB in the beginning and 65.1 MB in the end (delta: 17.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2020-11-28 03:10:58,088 INFO L168 Benchmark]: TraceAbstraction took 5955.39 ms. Allocated memory was 109.1 MB in the beginning and 132.1 MB in the end (delta: 23.1 MB). Free memory was 64.5 MB in the beginning and 98.2 MB in the end (delta: -33.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:10:58,088 INFO L168 Benchmark]: Witness Printer took 68.38 ms. Allocated memory is still 132.1 MB. Free memory was 98.2 MB in the beginning and 94.8 MB in the end (delta: 3.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-28 03:10:58,090 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.54 ms. Allocated memory is still 109.1 MB. Free memory was 81.9 MB in the beginning and 81.9 MB in the end (delta: 27.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 285.70 ms. Allocated memory is still 109.1 MB. Free memory was 73.7 MB in the beginning and 84.4 MB in the end (delta: -10.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 36.68 ms. Allocated memory is still 109.1 MB. Free memory was 84.4 MB in the beginning and 82.9 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 736.12 ms. Allocated memory is still 109.1 MB. Free memory was 82.9 MB in the beginning and 65.1 MB in the end (delta: 17.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5955.39 ms. Allocated memory was 109.1 MB in the beginning and 132.1 MB in the end (delta: 23.1 MB). Free memory was 64.5 MB in the beginning and 98.2 MB in the end (delta: -33.7 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 68.38 ms. Allocated memory is still 132.1 MB. Free memory was 98.2 MB in the beginning and 94.8 MB in the end (delta: 3.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 3]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 6]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 41 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5.8s, OverallIterations: 20, TraceHistogramMax: 1, AutomataDifference: 3.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1252 SDtfs, 1714 SDslu, 147 SDs, 0 SdLazy, 866 SolverSat, 70 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 137 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2058occurred in iteration=19, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 20 MinimizatonAttempts, 511 StatesRemovedByMinimization, 18 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 431 NumberOfCodeBlocks, 431 NumberOfCodeBlocksAsserted, 20 NumberOfCheckSat, 411 ConstructedInterpolants, 0 QuantifiedInterpolants, 27714 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 20 InterpolantComputations, 20 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 proved your program to be correct! Received shutdown request...