./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memcleanup.prp --file ../../sv-benchmarks/c/forester-heap/dll-optional-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (memcleanup) Using default analysis Version 57096758 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_646338db-da6d-44ec-94b8-d2fa9b21722a/bin/uautomizer-hJ6jxDFKc3/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_646338db-da6d-44ec-94b8-d2fa9b21722a/bin/uautomizer-hJ6jxDFKc3/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_646338db-da6d-44ec-94b8-d2fa9b21722a/bin/uautomizer-hJ6jxDFKc3/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_646338db-da6d-44ec-94b8-d2fa9b21722a/bin/uautomizer-hJ6jxDFKc3/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/forester-heap/dll-optional-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_646338db-da6d-44ec-94b8-d2fa9b21722a/bin/uautomizer-hJ6jxDFKc3/config/svcomp-MemCleanup-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_646338db-da6d-44ec-94b8-d2fa9b21722a/bin/uautomizer-hJ6jxDFKc3 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-memcleanup) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6b441a4213b4a827a391c87a88efb5ed98112599 .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-memcleanup) --- Real Ultimate output --- This is Ultimate 0.2.1-dev-5709675 [2021-10-15 19:06:09,561 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-15 19:06:09,562 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-15 19:06:09,608 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-15 19:06:09,609 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-15 19:06:09,613 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-15 19:06:09,615 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-15 19:06:09,619 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-15 19:06:09,622 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-15 19:06:09,627 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-15 19:06:09,628 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-15 19:06:09,630 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-15 19:06:09,631 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-15 19:06:09,634 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-15 19:06:09,636 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-15 19:06:09,645 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-15 19:06:09,647 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-15 19:06:09,648 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-15 19:06:09,651 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-15 19:06:09,660 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-15 19:06:09,662 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-15 19:06:09,664 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-15 19:06:09,667 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-15 19:06:09,668 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-15 19:06:09,676 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-15 19:06:09,677 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-15 19:06:09,677 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-15 19:06:09,679 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-15 19:06:09,679 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-15 19:06:09,681 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-15 19:06:09,682 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-15 19:06:09,683 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-15 19:06:09,684 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-15 19:06:09,686 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-15 19:06:09,687 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-15 19:06:09,687 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-15 19:06:09,688 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-15 19:06:09,688 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-15 19:06:09,688 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-15 19:06:09,689 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-15 19:06:09,690 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-15 19:06:09,691 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_646338db-da6d-44ec-94b8-d2fa9b21722a/bin/uautomizer-hJ6jxDFKc3/config/svcomp-MemCleanup-32bit-Automizer_Default.epf [2021-10-15 19:06:09,736 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-15 19:06:09,736 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-15 19:06:09,737 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-15 19:06:09,737 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-15 19:06:09,738 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-15 19:06:09,738 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-15 19:06:09,739 INFO L138 SettingsManager]: * Use SBE=true [2021-10-15 19:06:09,739 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-15 19:06:09,739 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-15 19:06:09,739 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-15 19:06:09,739 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-15 19:06:09,740 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-15 19:06:09,740 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-15 19:06:09,740 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-15 19:06:09,740 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-15 19:06:09,740 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-15 19:06:09,740 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-15 19:06:09,741 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-15 19:06:09,741 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-15 19:06:09,741 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-15 19:06:09,741 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-15 19:06:09,741 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-15 19:06:09,742 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-15 19:06:09,742 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-15 19:06:09,742 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-15 19:06:09,742 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-15 19:06:09,748 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-15 19:06:09,748 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-15 19:06:09,748 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_worker_vcloud-master_on_vcloud-master/run_dir_646338db-da6d-44ec-94b8-d2fa9b21722a/bin/uautomizer-hJ6jxDFKc3/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_646338db-da6d-44ec-94b8-d2fa9b21722a/bin/uautomizer-hJ6jxDFKc3 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6b441a4213b4a827a391c87a88efb5ed98112599 [2021-10-15 19:06:10,040 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-15 19:06:10,072 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-15 19:06:10,075 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-15 19:06:10,076 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-15 19:06:10,077 INFO L275 PluginConnector]: CDTParser initialized [2021-10-15 19:06:10,079 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_646338db-da6d-44ec-94b8-d2fa9b21722a/bin/uautomizer-hJ6jxDFKc3/../../sv-benchmarks/c/forester-heap/dll-optional-2.i [2021-10-15 19:06:10,159 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_646338db-da6d-44ec-94b8-d2fa9b21722a/bin/uautomizer-hJ6jxDFKc3/data/e8f15dc69/841b86dd46ee4e439487ab3cd769c3d9/FLAGe46fded14 [2021-10-15 19:06:10,760 INFO L306 CDTParser]: Found 1 translation units. [2021-10-15 19:06:10,761 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_646338db-da6d-44ec-94b8-d2fa9b21722a/sv-benchmarks/c/forester-heap/dll-optional-2.i [2021-10-15 19:06:10,777 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_646338db-da6d-44ec-94b8-d2fa9b21722a/bin/uautomizer-hJ6jxDFKc3/data/e8f15dc69/841b86dd46ee4e439487ab3cd769c3d9/FLAGe46fded14 [2021-10-15 19:06:11,053 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_646338db-da6d-44ec-94b8-d2fa9b21722a/bin/uautomizer-hJ6jxDFKc3/data/e8f15dc69/841b86dd46ee4e439487ab3cd769c3d9 [2021-10-15 19:06:11,056 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-15 19:06:11,057 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-15 19:06:11,061 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-15 19:06:11,066 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-15 19:06:11,068 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-15 19:06:11,069 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 07:06:11" (1/1) ... [2021-10-15 19:06:11,070 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1689047f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:06:11, skipping insertion in model container [2021-10-15 19:06:11,070 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 07:06:11" (1/1) ... [2021-10-15 19:06:11,075 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-15 19:06:11,125 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-15 19:06:11,439 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_646338db-da6d-44ec-94b8-d2fa9b21722a/sv-benchmarks/c/forester-heap/dll-optional-2.i[22706,22719] [2021-10-15 19:06:11,452 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-15 19:06:11,459 INFO L203 MainTranslator]: Completed pre-run [2021-10-15 19:06:11,495 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_646338db-da6d-44ec-94b8-d2fa9b21722a/sv-benchmarks/c/forester-heap/dll-optional-2.i[22706,22719] [2021-10-15 19:06:11,498 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-15 19:06:11,535 INFO L208 MainTranslator]: Completed translation [2021-10-15 19:06:11,536 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:06:11 WrapperNode [2021-10-15 19:06:11,536 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-15 19:06:11,537 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-15 19:06:11,538 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-15 19:06:11,539 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-15 19:06:11,551 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:06:11" (1/1) ... [2021-10-15 19:06:11,552 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:06:11" (1/1) ... [2021-10-15 19:06:11,583 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:06:11" (1/1) ... [2021-10-15 19:06:11,592 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:06:11" (1/1) ... [2021-10-15 19:06:11,610 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:06:11" (1/1) ... [2021-10-15 19:06:11,618 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:06:11" (1/1) ... [2021-10-15 19:06:11,625 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:06:11" (1/1) ... [2021-10-15 19:06:11,632 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-15 19:06:11,633 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-15 19:06:11,633 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-15 19:06:11,633 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-15 19:06:11,634 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:06:11" (1/1) ... [2021-10-15 19:06:11,646 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-15 19:06:11,658 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_646338db-da6d-44ec-94b8-d2fa9b21722a/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 19:06:11,670 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_646338db-da6d-44ec-94b8-d2fa9b21722a/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-15 19:06:11,679 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_646338db-da6d-44ec-94b8-d2fa9b21722a/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-15 19:06:11,709 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-10-15 19:06:11,709 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-15 19:06:11,709 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-10-15 19:06:11,709 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-10-15 19:06:11,710 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-10-15 19:06:11,710 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-10-15 19:06:11,710 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-10-15 19:06:11,710 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-10-15 19:06:11,710 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-10-15 19:06:11,711 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-10-15 19:06:11,711 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-10-15 19:06:11,711 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-10-15 19:06:11,711 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-10-15 19:06:11,711 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-10-15 19:06:11,711 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-10-15 19:06:11,712 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-10-15 19:06:11,712 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-10-15 19:06:11,712 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-10-15 19:06:11,712 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-10-15 19:06:11,712 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-10-15 19:06:11,713 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-10-15 19:06:11,713 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-10-15 19:06:11,713 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-10-15 19:06:11,713 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-10-15 19:06:11,713 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-10-15 19:06:11,714 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-10-15 19:06:11,714 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-10-15 19:06:11,714 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-10-15 19:06:11,714 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-10-15 19:06:11,714 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-10-15 19:06:11,714 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-10-15 19:06:11,715 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-10-15 19:06:11,715 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-10-15 19:06:11,715 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-10-15 19:06:11,715 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-10-15 19:06:11,715 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-10-15 19:06:11,716 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-10-15 19:06:11,716 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-10-15 19:06:11,716 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-10-15 19:06:11,716 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-10-15 19:06:11,716 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-10-15 19:06:11,716 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-10-15 19:06:11,717 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-10-15 19:06:11,717 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-10-15 19:06:11,717 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-10-15 19:06:11,717 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-10-15 19:06:11,717 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-10-15 19:06:11,717 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-10-15 19:06:11,718 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-10-15 19:06:11,718 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-10-15 19:06:11,718 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-10-15 19:06:11,718 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-10-15 19:06:11,718 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-10-15 19:06:11,719 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-10-15 19:06:11,719 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-10-15 19:06:11,719 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-10-15 19:06:11,719 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-10-15 19:06:11,719 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-10-15 19:06:11,720 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2021-10-15 19:06:11,720 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-10-15 19:06:11,720 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-10-15 19:06:11,720 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-10-15 19:06:11,720 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-10-15 19:06:11,720 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-10-15 19:06:11,721 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-10-15 19:06:11,721 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-10-15 19:06:11,721 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-10-15 19:06:11,721 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-10-15 19:06:11,721 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-10-15 19:06:11,722 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-10-15 19:06:11,722 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-10-15 19:06:11,722 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-10-15 19:06:11,722 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-10-15 19:06:11,722 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-10-15 19:06:11,723 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-10-15 19:06:11,723 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-10-15 19:06:11,723 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-10-15 19:06:11,723 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-10-15 19:06:11,723 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-10-15 19:06:11,723 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-10-15 19:06:11,724 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-10-15 19:06:11,724 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-10-15 19:06:11,724 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-10-15 19:06:11,724 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-10-15 19:06:11,724 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-10-15 19:06:11,724 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-10-15 19:06:11,725 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-10-15 19:06:11,725 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-10-15 19:06:11,725 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-10-15 19:06:11,725 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-10-15 19:06:11,725 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-10-15 19:06:11,725 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-10-15 19:06:11,726 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-10-15 19:06:11,726 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-10-15 19:06:11,726 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-10-15 19:06:11,726 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-10-15 19:06:11,726 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-10-15 19:06:11,727 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-10-15 19:06:11,727 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-10-15 19:06:11,727 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-10-15 19:06:11,727 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-10-15 19:06:11,727 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-10-15 19:06:11,727 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-10-15 19:06:11,728 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-10-15 19:06:11,728 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-10-15 19:06:11,728 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-10-15 19:06:11,728 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-10-15 19:06:11,728 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-10-15 19:06:11,728 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-10-15 19:06:11,729 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-10-15 19:06:11,729 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-10-15 19:06:11,729 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-10-15 19:06:11,729 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-15 19:06:11,729 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-10-15 19:06:11,729 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-15 19:06:11,730 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-15 19:06:11,730 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-15 19:06:11,730 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-15 19:06:11,730 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-15 19:06:11,730 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-15 19:06:11,731 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-10-15 19:06:11,731 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-15 19:06:11,731 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-15 19:06:12,515 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-15 19:06:12,516 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-10-15 19:06:12,518 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 07:06:12 BoogieIcfgContainer [2021-10-15 19:06:12,518 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-15 19:06:12,520 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-15 19:06:12,520 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-15 19:06:12,523 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-15 19:06:12,523 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 07:06:11" (1/3) ... [2021-10-15 19:06:12,524 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29575e65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 07:06:12, skipping insertion in model container [2021-10-15 19:06:12,524 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:06:11" (2/3) ... [2021-10-15 19:06:12,525 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29575e65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 07:06:12, skipping insertion in model container [2021-10-15 19:06:12,525 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 07:06:12" (3/3) ... [2021-10-15 19:06:12,526 INFO L111 eAbstractionObserver]: Analyzing ICFG dll-optional-2.i [2021-10-15 19:06:12,532 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-15 19:06:12,533 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 66 error locations. [2021-10-15 19:06:12,576 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-15 19:06:12,583 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-15 19:06:12,583 INFO L340 AbstractCegarLoop]: Starting to check reachability of 66 error locations. [2021-10-15 19:06:12,601 INFO L276 IsEmpty]: Start isEmpty. Operand has 143 states, 72 states have (on average 2.125) internal successors, (153), 138 states have internal predecessors, (153), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-10-15 19:06:12,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-15 19:06:12,608 INFO L504 BasicCegarLoop]: Found error trace [2021-10-15 19:06:12,609 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-15 19:06:12,609 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 61 more)] === [2021-10-15 19:06:12,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:06:12,614 INFO L82 PathProgramCache]: Analyzing trace with hash 1414783073, now seen corresponding path program 1 times [2021-10-15 19:06:12,623 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:06:12,624 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344327158] [2021-10-15 19:06:12,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:06:12,625 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:06:12,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:06:12,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-15 19:06:12,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:06:12,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:06:12,854 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:06:12,854 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344327158] [2021-10-15 19:06:12,855 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1344327158] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:06:12,856 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:06:12,856 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-15 19:06:12,858 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254889515] [2021-10-15 19:06:12,862 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-15 19:06:12,863 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:06:12,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-15 19:06:12,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-15 19:06:12,880 INFO L87 Difference]: Start difference. First operand has 143 states, 72 states have (on average 2.125) internal successors, (153), 138 states have internal predecessors, (153), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-15 19:06:13,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-15 19:06:13,167 INFO L93 Difference]: Finished difference Result 143 states and 152 transitions. [2021-10-15 19:06:13,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-15 19:06:13,169 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 7 [2021-10-15 19:06:13,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-15 19:06:13,179 INFO L225 Difference]: With dead ends: 143 [2021-10-15 19:06:13,179 INFO L226 Difference]: Without dead ends: 139 [2021-10-15 19:06:13,181 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 21.4ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-15 19:06:13,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2021-10-15 19:06:13,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 133. [2021-10-15 19:06:13,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 74 states have (on average 1.8918918918918919) internal successors, (140), 129 states have internal predecessors, (140), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-15 19:06:13,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 143 transitions. [2021-10-15 19:06:13,224 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 143 transitions. Word has length 7 [2021-10-15 19:06:13,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-15 19:06:13,224 INFO L470 AbstractCegarLoop]: Abstraction has 133 states and 143 transitions. [2021-10-15 19:06:13,225 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-15 19:06:13,225 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 143 transitions. [2021-10-15 19:06:13,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-15 19:06:13,225 INFO L504 BasicCegarLoop]: Found error trace [2021-10-15 19:06:13,225 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-15 19:06:13,226 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-15 19:06:13,226 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr1REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 61 more)] === [2021-10-15 19:06:13,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:06:13,227 INFO L82 PathProgramCache]: Analyzing trace with hash 1414783074, now seen corresponding path program 1 times [2021-10-15 19:06:13,227 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:06:13,228 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502401148] [2021-10-15 19:06:13,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:06:13,229 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:06:13,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:06:13,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-15 19:06:13,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:06:13,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:06:13,308 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:06:13,308 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502401148] [2021-10-15 19:06:13,309 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [502401148] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:06:13,309 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:06:13,309 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-15 19:06:13,309 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584624107] [2021-10-15 19:06:13,311 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-15 19:06:13,311 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:06:13,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-15 19:06:13,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-15 19:06:13,312 INFO L87 Difference]: Start difference. First operand 133 states and 143 transitions. Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-15 19:06:13,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-15 19:06:13,557 INFO L93 Difference]: Finished difference Result 128 states and 138 transitions. [2021-10-15 19:06:13,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-15 19:06:13,557 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 7 [2021-10-15 19:06:13,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-15 19:06:13,563 INFO L225 Difference]: With dead ends: 128 [2021-10-15 19:06:13,564 INFO L226 Difference]: Without dead ends: 128 [2021-10-15 19:06:13,565 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 19.4ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-15 19:06:13,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2021-10-15 19:06:13,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 124. [2021-10-15 19:06:13,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 74 states have (on average 1.7702702702702702) internal successors, (131), 120 states have internal predecessors, (131), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-15 19:06:13,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 134 transitions. [2021-10-15 19:06:13,587 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 134 transitions. Word has length 7 [2021-10-15 19:06:13,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-15 19:06:13,587 INFO L470 AbstractCegarLoop]: Abstraction has 124 states and 134 transitions. [2021-10-15 19:06:13,587 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-15 19:06:13,587 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 134 transitions. [2021-10-15 19:06:13,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-15 19:06:13,588 INFO L504 BasicCegarLoop]: Found error trace [2021-10-15 19:06:13,588 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 19:06:13,588 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-15 19:06:13,589 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr10REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 61 more)] === [2021-10-15 19:06:13,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:06:13,593 INFO L82 PathProgramCache]: Analyzing trace with hash -844776134, now seen corresponding path program 1 times [2021-10-15 19:06:13,594 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:06:13,594 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440341955] [2021-10-15 19:06:13,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:06:13,595 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:06:13,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:06:13,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-15 19:06:13,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:06:13,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:06:13,779 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:06:13,779 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440341955] [2021-10-15 19:06:13,779 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [440341955] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:06:13,780 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:06:13,780 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-15 19:06:13,780 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370248617] [2021-10-15 19:06:13,781 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-15 19:06:13,781 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:06:13,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-15 19:06:13,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-15 19:06:13,782 INFO L87 Difference]: Start difference. First operand 124 states and 134 transitions. Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-15 19:06:14,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-15 19:06:14,115 INFO L93 Difference]: Finished difference Result 153 states and 166 transitions. [2021-10-15 19:06:14,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-15 19:06:14,116 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2021-10-15 19:06:14,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-15 19:06:14,118 INFO L225 Difference]: With dead ends: 153 [2021-10-15 19:06:14,118 INFO L226 Difference]: Without dead ends: 153 [2021-10-15 19:06:14,118 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 48.7ms TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-10-15 19:06:14,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2021-10-15 19:06:14,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 123. [2021-10-15 19:06:14,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 74 states have (on average 1.7567567567567568) internal successors, (130), 119 states have internal predecessors, (130), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-15 19:06:14,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 133 transitions. [2021-10-15 19:06:14,127 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 133 transitions. Word has length 16 [2021-10-15 19:06:14,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-15 19:06:14,128 INFO L470 AbstractCegarLoop]: Abstraction has 123 states and 133 transitions. [2021-10-15 19:06:14,128 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-15 19:06:14,128 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 133 transitions. [2021-10-15 19:06:14,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-15 19:06:14,129 INFO L504 BasicCegarLoop]: Found error trace [2021-10-15 19:06:14,129 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 19:06:14,129 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-15 19:06:14,129 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr11REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 61 more)] === [2021-10-15 19:06:14,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:06:14,130 INFO L82 PathProgramCache]: Analyzing trace with hash -844776133, now seen corresponding path program 1 times [2021-10-15 19:06:14,130 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:06:14,131 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170918418] [2021-10-15 19:06:14,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:06:14,131 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:06:14,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:06:14,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-15 19:06:14,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:06:14,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:06:14,255 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:06:14,255 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170918418] [2021-10-15 19:06:14,256 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1170918418] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:06:14,256 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:06:14,256 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-15 19:06:14,256 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175256615] [2021-10-15 19:06:14,257 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-15 19:06:14,257 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:06:14,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-15 19:06:14,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-15 19:06:14,258 INFO L87 Difference]: Start difference. First operand 123 states and 133 transitions. Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-15 19:06:14,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-15 19:06:14,542 INFO L93 Difference]: Finished difference Result 122 states and 132 transitions. [2021-10-15 19:06:14,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-15 19:06:14,542 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2021-10-15 19:06:14,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-15 19:06:14,543 INFO L225 Difference]: With dead ends: 122 [2021-10-15 19:06:14,544 INFO L226 Difference]: Without dead ends: 122 [2021-10-15 19:06:14,544 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 61.1ms TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-10-15 19:06:14,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2021-10-15 19:06:14,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 122. [2021-10-15 19:06:14,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 74 states have (on average 1.7432432432432432) internal successors, (129), 118 states have internal predecessors, (129), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-15 19:06:14,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 132 transitions. [2021-10-15 19:06:14,551 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 132 transitions. Word has length 16 [2021-10-15 19:06:14,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-15 19:06:14,551 INFO L470 AbstractCegarLoop]: Abstraction has 122 states and 132 transitions. [2021-10-15 19:06:14,551 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-15 19:06:14,551 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 132 transitions. [2021-10-15 19:06:14,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-15 19:06:14,552 INFO L504 BasicCegarLoop]: Found error trace [2021-10-15 19:06:14,552 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 19:06:14,552 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-15 19:06:14,553 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr20REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 61 more)] === [2021-10-15 19:06:14,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:06:14,553 INFO L82 PathProgramCache]: Analyzing trace with hash -667442544, now seen corresponding path program 1 times [2021-10-15 19:06:14,553 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:06:14,554 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992688843] [2021-10-15 19:06:14,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:06:14,554 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:06:14,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:06:14,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-15 19:06:14,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:06:14,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:06:14,639 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:06:14,639 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992688843] [2021-10-15 19:06:14,639 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1992688843] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:06:14,639 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:06:14,639 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-15 19:06:14,640 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873185138] [2021-10-15 19:06:14,640 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-15 19:06:14,640 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:06:14,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-15 19:06:14,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-15 19:06:14,641 INFO L87 Difference]: Start difference. First operand 122 states and 132 transitions. Second operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-15 19:06:14,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-15 19:06:14,890 INFO L93 Difference]: Finished difference Result 125 states and 134 transitions. [2021-10-15 19:06:14,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-15 19:06:14,890 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2021-10-15 19:06:14,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-15 19:06:14,892 INFO L225 Difference]: With dead ends: 125 [2021-10-15 19:06:14,892 INFO L226 Difference]: Without dead ends: 125 [2021-10-15 19:06:14,892 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 31.1ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-15 19:06:14,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2021-10-15 19:06:14,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 116. [2021-10-15 19:06:14,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 80 states have (on average 1.6) internal successors, (128), 112 states have internal predecessors, (128), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-15 19:06:14,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 131 transitions. [2021-10-15 19:06:14,898 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 131 transitions. Word has length 17 [2021-10-15 19:06:14,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-15 19:06:14,898 INFO L470 AbstractCegarLoop]: Abstraction has 116 states and 131 transitions. [2021-10-15 19:06:14,899 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-15 19:06:14,899 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 131 transitions. [2021-10-15 19:06:14,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-15 19:06:14,900 INFO L504 BasicCegarLoop]: Found error trace [2021-10-15 19:06:14,900 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 19:06:14,900 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-15 19:06:14,901 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr21REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 61 more)] === [2021-10-15 19:06:14,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:06:14,901 INFO L82 PathProgramCache]: Analyzing trace with hash -667442543, now seen corresponding path program 1 times [2021-10-15 19:06:14,901 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:06:14,902 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556665573] [2021-10-15 19:06:14,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:06:14,902 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:06:14,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:06:14,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-15 19:06:14,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:06:14,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:06:14,989 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:06:14,989 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556665573] [2021-10-15 19:06:14,989 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1556665573] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:06:14,990 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:06:14,990 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-15 19:06:14,990 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351373284] [2021-10-15 19:06:14,991 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-15 19:06:14,991 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:06:14,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-15 19:06:14,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-15 19:06:14,992 INFO L87 Difference]: Start difference. First operand 116 states and 131 transitions. Second operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-15 19:06:15,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-15 19:06:15,245 INFO L93 Difference]: Finished difference Result 142 states and 156 transitions. [2021-10-15 19:06:15,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-15 19:06:15,246 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2021-10-15 19:06:15,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-15 19:06:15,247 INFO L225 Difference]: With dead ends: 142 [2021-10-15 19:06:15,247 INFO L226 Difference]: Without dead ends: 142 [2021-10-15 19:06:15,247 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 29.6ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-15 19:06:15,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2021-10-15 19:06:15,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 131. [2021-10-15 19:06:15,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 95 states have (on average 1.5368421052631578) internal successors, (146), 127 states have internal predecessors, (146), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-15 19:06:15,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 149 transitions. [2021-10-15 19:06:15,253 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 149 transitions. Word has length 17 [2021-10-15 19:06:15,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-15 19:06:15,254 INFO L470 AbstractCegarLoop]: Abstraction has 131 states and 149 transitions. [2021-10-15 19:06:15,254 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-15 19:06:15,254 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 149 transitions. [2021-10-15 19:06:15,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-15 19:06:15,255 INFO L504 BasicCegarLoop]: Found error trace [2021-10-15 19:06:15,255 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 19:06:15,256 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-15 19:06:15,256 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr24REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 61 more)] === [2021-10-15 19:06:15,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:06:15,257 INFO L82 PathProgramCache]: Analyzing trace with hash 1917790938, now seen corresponding path program 1 times [2021-10-15 19:06:15,257 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:06:15,257 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476520886] [2021-10-15 19:06:15,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:06:15,258 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:06:15,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:06:15,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-15 19:06:15,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:06:15,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:06:15,328 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:06:15,328 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476520886] [2021-10-15 19:06:15,328 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [476520886] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:06:15,329 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:06:15,329 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-15 19:06:15,329 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386186970] [2021-10-15 19:06:15,330 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-15 19:06:15,330 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:06:15,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-15 19:06:15,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-15 19:06:15,331 INFO L87 Difference]: Start difference. First operand 131 states and 149 transitions. Second operand has 6 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-15 19:06:15,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-15 19:06:15,571 INFO L93 Difference]: Finished difference Result 130 states and 147 transitions. [2021-10-15 19:06:15,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-15 19:06:15,571 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 20 [2021-10-15 19:06:15,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-15 19:06:15,572 INFO L225 Difference]: With dead ends: 130 [2021-10-15 19:06:15,572 INFO L226 Difference]: Without dead ends: 130 [2021-10-15 19:06:15,573 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 35.2ms TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-10-15 19:06:15,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2021-10-15 19:06:15,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 130. [2021-10-15 19:06:15,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 95 states have (on average 1.5157894736842106) internal successors, (144), 126 states have internal predecessors, (144), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-15 19:06:15,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 147 transitions. [2021-10-15 19:06:15,578 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 147 transitions. Word has length 20 [2021-10-15 19:06:15,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-15 19:06:15,578 INFO L470 AbstractCegarLoop]: Abstraction has 130 states and 147 transitions. [2021-10-15 19:06:15,579 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-15 19:06:15,579 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 147 transitions. [2021-10-15 19:06:15,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-15 19:06:15,580 INFO L504 BasicCegarLoop]: Found error trace [2021-10-15 19:06:15,580 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 19:06:15,580 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-15 19:06:15,580 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr25REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 61 more)] === [2021-10-15 19:06:15,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:06:15,580 INFO L82 PathProgramCache]: Analyzing trace with hash 1917790939, now seen corresponding path program 1 times [2021-10-15 19:06:15,581 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:06:15,581 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641479807] [2021-10-15 19:06:15,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:06:15,581 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:06:15,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:06:15,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-15 19:06:15,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:06:15,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:06:15,680 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:06:15,681 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641479807] [2021-10-15 19:06:15,681 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [641479807] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:06:15,681 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:06:15,681 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-15 19:06:15,681 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897701844] [2021-10-15 19:06:15,682 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-15 19:06:15,682 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:06:15,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-15 19:06:15,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-15 19:06:15,683 INFO L87 Difference]: Start difference. First operand 130 states and 147 transitions. Second operand has 6 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-15 19:06:15,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-15 19:06:15,944 INFO L93 Difference]: Finished difference Result 129 states and 145 transitions. [2021-10-15 19:06:15,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-15 19:06:15,944 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 20 [2021-10-15 19:06:15,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-15 19:06:15,945 INFO L225 Difference]: With dead ends: 129 [2021-10-15 19:06:15,945 INFO L226 Difference]: Without dead ends: 129 [2021-10-15 19:06:15,946 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 63.5ms TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-10-15 19:06:15,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2021-10-15 19:06:15,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 129. [2021-10-15 19:06:15,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 95 states have (on average 1.4947368421052631) internal successors, (142), 125 states have internal predecessors, (142), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-15 19:06:15,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 145 transitions. [2021-10-15 19:06:15,950 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 145 transitions. Word has length 20 [2021-10-15 19:06:15,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-15 19:06:15,955 INFO L470 AbstractCegarLoop]: Abstraction has 129 states and 145 transitions. [2021-10-15 19:06:15,955 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-15 19:06:15,956 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 145 transitions. [2021-10-15 19:06:15,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-15 19:06:15,957 INFO L504 BasicCegarLoop]: Found error trace [2021-10-15 19:06:15,957 INFO L512 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] [2021-10-15 19:06:15,957 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-15 19:06:15,957 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr65ENSURES_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 61 more)] === [2021-10-15 19:06:15,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:06:15,958 INFO L82 PathProgramCache]: Analyzing trace with hash 461207233, now seen corresponding path program 1 times [2021-10-15 19:06:15,958 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:06:15,959 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336284457] [2021-10-15 19:06:15,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:06:15,959 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:06:15,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:06:16,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-15 19:06:16,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:06:16,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:06:16,019 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:06:16,019 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336284457] [2021-10-15 19:06:16,019 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [336284457] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:06:16,020 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:06:16,020 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-15 19:06:16,020 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544288872] [2021-10-15 19:06:16,020 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-15 19:06:16,021 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:06:16,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-15 19:06:16,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-15 19:06:16,022 INFO L87 Difference]: Start difference. First operand 129 states and 145 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-15 19:06:16,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-15 19:06:16,250 INFO L93 Difference]: Finished difference Result 156 states and 172 transitions. [2021-10-15 19:06:16,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-15 19:06:16,250 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 22 [2021-10-15 19:06:16,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-15 19:06:16,251 INFO L225 Difference]: With dead ends: 156 [2021-10-15 19:06:16,252 INFO L226 Difference]: Without dead ends: 156 [2021-10-15 19:06:16,252 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 18.1ms TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-15 19:06:16,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2021-10-15 19:06:16,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 129. [2021-10-15 19:06:16,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 95 states have (on average 1.4736842105263157) internal successors, (140), 125 states have internal predecessors, (140), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-15 19:06:16,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 143 transitions. [2021-10-15 19:06:16,257 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 143 transitions. Word has length 22 [2021-10-15 19:06:16,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-15 19:06:16,257 INFO L470 AbstractCegarLoop]: Abstraction has 129 states and 143 transitions. [2021-10-15 19:06:16,257 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-15 19:06:16,257 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 143 transitions. [2021-10-15 19:06:16,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-15 19:06:16,258 INFO L504 BasicCegarLoop]: Found error trace [2021-10-15 19:06:16,258 INFO L512 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] [2021-10-15 19:06:16,269 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-15 19:06:16,269 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr50ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 61 more)] === [2021-10-15 19:06:16,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:06:16,270 INFO L82 PathProgramCache]: Analyzing trace with hash 1435277979, now seen corresponding path program 1 times [2021-10-15 19:06:16,270 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:06:16,270 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170287741] [2021-10-15 19:06:16,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:06:16,271 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:06:16,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-15 19:06:16,302 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-15 19:06:16,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-15 19:06:16,357 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-15 19:06:16,357 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-15 19:06:16,358 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location mainErr50ASSERT_VIOLATIONMEMORY_LEAK [2021-10-15 19:06:16,361 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr0REQUIRES_VIOLATION [2021-10-15 19:06:16,361 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr1REQUIRES_VIOLATION [2021-10-15 19:06:16,362 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr2REQUIRES_VIOLATION [2021-10-15 19:06:16,362 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr3REQUIRES_VIOLATION [2021-10-15 19:06:16,363 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr4REQUIRES_VIOLATION [2021-10-15 19:06:16,363 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr5REQUIRES_VIOLATION [2021-10-15 19:06:16,363 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr6REQUIRES_VIOLATION [2021-10-15 19:06:16,364 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr7REQUIRES_VIOLATION [2021-10-15 19:06:16,364 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr8REQUIRES_VIOLATION [2021-10-15 19:06:16,364 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr9REQUIRES_VIOLATION [2021-10-15 19:06:16,364 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr10REQUIRES_VIOLATION [2021-10-15 19:06:16,364 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr11REQUIRES_VIOLATION [2021-10-15 19:06:16,365 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr12REQUIRES_VIOLATION [2021-10-15 19:06:16,365 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr13REQUIRES_VIOLATION [2021-10-15 19:06:16,365 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr14REQUIRES_VIOLATION [2021-10-15 19:06:16,365 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr15REQUIRES_VIOLATION [2021-10-15 19:06:16,368 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr16REQUIRES_VIOLATION [2021-10-15 19:06:16,368 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr17REQUIRES_VIOLATION [2021-10-15 19:06:16,368 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr18REQUIRES_VIOLATION [2021-10-15 19:06:16,368 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr19REQUIRES_VIOLATION [2021-10-15 19:06:16,368 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr20REQUIRES_VIOLATION [2021-10-15 19:06:16,369 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr21REQUIRES_VIOLATION [2021-10-15 19:06:16,369 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr22REQUIRES_VIOLATION [2021-10-15 19:06:16,369 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr23REQUIRES_VIOLATION [2021-10-15 19:06:16,369 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr24REQUIRES_VIOLATION [2021-10-15 19:06:16,369 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr25REQUIRES_VIOLATION [2021-10-15 19:06:16,369 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr26REQUIRES_VIOLATION [2021-10-15 19:06:16,370 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr27REQUIRES_VIOLATION [2021-10-15 19:06:16,370 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr28REQUIRES_VIOLATION [2021-10-15 19:06:16,370 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr29REQUIRES_VIOLATION [2021-10-15 19:06:16,370 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr30REQUIRES_VIOLATION [2021-10-15 19:06:16,370 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr31REQUIRES_VIOLATION [2021-10-15 19:06:16,370 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr32REQUIRES_VIOLATION [2021-10-15 19:06:16,371 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr33REQUIRES_VIOLATION [2021-10-15 19:06:16,371 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr34REQUIRES_VIOLATION [2021-10-15 19:06:16,371 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr35REQUIRES_VIOLATION [2021-10-15 19:06:16,371 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr36REQUIRES_VIOLATION [2021-10-15 19:06:16,371 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr37REQUIRES_VIOLATION [2021-10-15 19:06:16,371 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr38REQUIRES_VIOLATION [2021-10-15 19:06:16,372 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr39REQUIRES_VIOLATION [2021-10-15 19:06:16,372 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr40REQUIRES_VIOLATION [2021-10-15 19:06:16,372 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr41REQUIRES_VIOLATION [2021-10-15 19:06:16,372 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr42REQUIRES_VIOLATION [2021-10-15 19:06:16,372 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr43REQUIRES_VIOLATION [2021-10-15 19:06:16,373 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr44REQUIRES_VIOLATION [2021-10-15 19:06:16,373 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr45REQUIRES_VIOLATION [2021-10-15 19:06:16,373 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr46REQUIRES_VIOLATION [2021-10-15 19:06:16,373 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr47REQUIRES_VIOLATION [2021-10-15 19:06:16,373 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr48REQUIRES_VIOLATION [2021-10-15 19:06:16,373 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr49REQUIRES_VIOLATION [2021-10-15 19:06:16,374 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr51REQUIRES_VIOLATION [2021-10-15 19:06:16,379 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr52REQUIRES_VIOLATION [2021-10-15 19:06:16,380 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr53REQUIRES_VIOLATION [2021-10-15 19:06:16,380 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr54REQUIRES_VIOLATION [2021-10-15 19:06:16,380 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr55REQUIRES_VIOLATION [2021-10-15 19:06:16,380 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr56REQUIRES_VIOLATION [2021-10-15 19:06:16,380 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr57REQUIRES_VIOLATION [2021-10-15 19:06:16,381 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr58REQUIRES_VIOLATION [2021-10-15 19:06:16,381 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr59ASSERT_VIOLATIONMEMORY_FREE [2021-10-15 19:06:16,381 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr60ASSERT_VIOLATIONMEMORY_FREE [2021-10-15 19:06:16,381 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr61ASSERT_VIOLATIONMEMORY_FREE [2021-10-15 19:06:16,382 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr62ASSERT_VIOLATIONMEMORY_FREE [2021-10-15 19:06:16,382 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr63ASSERT_VIOLATIONMEMORY_FREE [2021-10-15 19:06:16,382 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr64ASSERT_VIOLATIONMEMORY_FREE [2021-10-15 19:06:16,382 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr65ENSURES_VIOLATIONMEMORY_LEAK [2021-10-15 19:06:16,382 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-10-15 19:06:16,390 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-15 19:06:16,427 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 07:06:16 BoogieIcfgContainer [2021-10-15 19:06:16,427 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-15 19:06:16,428 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-15 19:06:16,428 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-15 19:06:16,428 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-15 19:06:16,429 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 07:06:12" (3/4) ... [2021-10-15 19:06:16,430 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-15 19:06:16,464 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_646338db-da6d-44ec-94b8-d2fa9b21722a/bin/uautomizer-hJ6jxDFKc3/witness.graphml [2021-10-15 19:06:16,464 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-15 19:06:16,466 INFO L168 Benchmark]: Toolchain (without parser) took 5407.27 ms. Allocated memory was 119.5 MB in the beginning and 153.1 MB in the end (delta: 33.6 MB). Free memory was 78.5 MB in the beginning and 88.0 MB in the end (delta: -9.5 MB). Peak memory consumption was 22.4 MB. Max. memory is 16.1 GB. [2021-10-15 19:06:16,466 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 119.5 MB. Free memory is still 96.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-15 19:06:16,466 INFO L168 Benchmark]: CACSL2BoogieTranslator took 475.15 ms. Allocated memory is still 119.5 MB. Free memory was 78.3 MB in the beginning and 87.5 MB in the end (delta: -9.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-15 19:06:16,467 INFO L168 Benchmark]: Boogie Preprocessor took 95.35 ms. Allocated memory is still 119.5 MB. Free memory was 87.5 MB in the beginning and 84.6 MB in the end (delta: 2.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-15 19:06:16,467 INFO L168 Benchmark]: RCFGBuilder took 885.10 ms. Allocated memory is still 119.5 MB. Free memory was 84.6 MB in the beginning and 57.0 MB in the end (delta: 27.6 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.1 GB. [2021-10-15 19:06:16,468 INFO L168 Benchmark]: TraceAbstraction took 3907.50 ms. Allocated memory was 119.5 MB in the beginning and 153.1 MB in the end (delta: 33.6 MB). Free memory was 56.6 MB in the beginning and 90.1 MB in the end (delta: -33.4 MB). Peak memory consumption was 1.6 MB. Max. memory is 16.1 GB. [2021-10-15 19:06:16,468 INFO L168 Benchmark]: Witness Printer took 36.41 ms. Allocated memory is still 153.1 MB. Free memory was 90.1 MB in the beginning and 88.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-15 19:06:16,470 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 119.5 MB. Free memory is still 96.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 475.15 ms. Allocated memory is still 119.5 MB. Free memory was 78.3 MB in the beginning and 87.5 MB in the end (delta: -9.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 95.35 ms. Allocated memory is still 119.5 MB. Free memory was 87.5 MB in the beginning and 84.6 MB in the end (delta: 2.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 885.10 ms. Allocated memory is still 119.5 MB. Free memory was 84.6 MB in the beginning and 57.0 MB in the end (delta: 27.6 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3907.50 ms. Allocated memory was 119.5 MB in the beginning and 153.1 MB in the end (delta: 33.6 MB). Free memory was 56.6 MB in the beginning and 90.1 MB in the end (delta: -33.4 MB). Peak memory consumption was 1.6 MB. Max. memory is 16.1 GB. * Witness Printer took 36.41 ms. Allocated memory is still 153.1 MB. Free memory was 90.1 MB in the beginning and 88.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 1009]: not all allocated memory was freed not all allocated memory was freed We found a FailurePath: [L997] SLL* head = malloc(sizeof(SLL)); [L998] head->next = ((void*)0) VAL [head={-1:0}] [L999] head->prev = ((void*)0) VAL [head={-1:0}] [L1000] COND FALSE !(__VERIFIER_nondet_int()) [L1000] COND TRUE __VERIFIER_nondet_int() [L1000] head->data = 1 VAL [head={-1:0}] [L1000] head->opt = head VAL [head={-1:0}] [L1001] SLL* x = head; VAL [head={-1:0}, x={-1:0}] [L1003] COND FALSE !(__VERIFIER_nondet_int()) [L1006] x = head VAL [head={-1:0}, x={-1:0}] [L1007] COND TRUE x != ((void*)0) VAL [head={-1:0}, x={-1:0}] [L1009] EXPR x->data VAL [head={-1:0}, x={-1:0}, x->data=1] [L1009] EXPR x->data == 2 && x->opt == x VAL [head={-1:0}, x={-1:0}, x->data=1, x->data == 2 && x->opt == x=0] [L1009] COND TRUE !(x->data == 2 && x->opt == x) [L1009] reach_error() VAL [head={-1:0}, x={-1:0}] - UnprovableResult [Line: 998]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 998]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 999]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 999]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1000]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1000]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1000]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1000]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1000]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1000]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1000]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1000]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1000]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1000]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1000]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1000]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1000]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1000]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1000]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1000]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1003]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1003]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1003]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1003]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1003]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1003]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1003]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1003]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1003]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1003]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1003]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1003]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1003]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1003]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1003]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1003]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1003]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1003]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1003]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1003]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1003]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1003]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1003]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1003]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1003]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1003]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1009]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1009]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1009]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1009]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1010]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1010]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1018]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1018]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1019]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1019]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1020]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1020]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1020]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1020]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1020]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1021]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1021]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1021]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 994]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 146 locations, 66 error locations. Started 1 CEGAR loops. OverallTime: 3812.3ms, OverallIterations: 10, TraceHistogramMax: 1, EmptinessCheckTime: 18.1ms, AutomataDifference: 2440.5ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 13.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 778 SDtfs, 658 SDslu, 948 SDs, 0 SdLazy, 2272 SolverSat, 94 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1696.9ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 60 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 328.5ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=143occurred in iteration=0, InterpolantAutomatonStates: 56, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 90.1ms AutomataMinimizationTime, 9 MinimizatonAttempts, 87 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 28.8ms SsaConstructionTime, 178.7ms SatisfiabilityAnalysisTime, 727.0ms InterpolantComputationTime, 165 NumberOfCodeBlocks, 165 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 133 ConstructedInterpolants, 0 QuantifiedInterpolants, 689 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 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 incorrect! [2021-10-15 19:06:16,509 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_646338db-da6d-44ec-94b8-d2fa9b21722a/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...