./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memcleanup.prp --file ../../sv-benchmarks/c/list-properties/alternating_list-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (memcleanup) Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6c3bd0c-c1a4-448b-9c76-12abf27abaca/bin/uautomizer-UnR33cPsHg/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6c3bd0c-c1a4-448b-9c76-12abf27abaca/bin/uautomizer-UnR33cPsHg/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6c3bd0c-c1a4-448b-9c76-12abf27abaca/bin/uautomizer-UnR33cPsHg/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6c3bd0c-c1a4-448b-9c76-12abf27abaca/bin/uautomizer-UnR33cPsHg/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-properties/alternating_list-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6c3bd0c-c1a4-448b-9c76-12abf27abaca/bin/uautomizer-UnR33cPsHg/config/svcomp-MemCleanup-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6c3bd0c-c1a4-448b-9c76-12abf27abaca/bin/uautomizer-UnR33cPsHg --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 f533383f211897ea0c402e211f6c19321d99a2ee7c27b850c3f29a2cf1ec1863 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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-b2eff8b [2021-10-28 08:44:59,616 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 08:44:59,618 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 08:44:59,655 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 08:44:59,656 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 08:44:59,661 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 08:44:59,663 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 08:44:59,667 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 08:44:59,670 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 08:44:59,678 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 08:44:59,679 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 08:44:59,681 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 08:44:59,682 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 08:44:59,685 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 08:44:59,688 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 08:44:59,697 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 08:44:59,699 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 08:44:59,700 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 08:44:59,704 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 08:44:59,710 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 08:44:59,713 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 08:44:59,714 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 08:44:59,718 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 08:44:59,719 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 08:44:59,730 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 08:44:59,733 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 08:44:59,733 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 08:44:59,735 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 08:44:59,736 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 08:44:59,738 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 08:44:59,739 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 08:44:59,740 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 08:44:59,742 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 08:44:59,743 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 08:44:59,745 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 08:44:59,745 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 08:44:59,746 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 08:44:59,746 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 08:44:59,747 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 08:44:59,748 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 08:44:59,748 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 08:44:59,750 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6c3bd0c-c1a4-448b-9c76-12abf27abaca/bin/uautomizer-UnR33cPsHg/config/svcomp-MemCleanup-32bit-Automizer_Default.epf [2021-10-28 08:44:59,793 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 08:44:59,796 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 08:44:59,797 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 08:44:59,797 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 08:44:59,805 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 08:44:59,805 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 08:44:59,806 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 08:44:59,806 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 08:44:59,806 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 08:44:59,806 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-28 08:44:59,808 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 08:44:59,808 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 08:44:59,808 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 08:44:59,808 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-28 08:44:59,809 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-28 08:44:59,809 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 08:44:59,809 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-28 08:44:59,809 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 08:44:59,809 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 08:44:59,810 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 08:44:59,810 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 08:44:59,810 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 08:44:59,810 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 08:44:59,811 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 08:44:59,811 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 08:44:59,811 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 08:44:59,811 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-28 08:44:59,812 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 08:44:59,812 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_b6c3bd0c-c1a4-448b-9c76-12abf27abaca/bin/uautomizer-UnR33cPsHg/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6c3bd0c-c1a4-448b-9c76-12abf27abaca/bin/uautomizer-UnR33cPsHg Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f533383f211897ea0c402e211f6c19321d99a2ee7c27b850c3f29a2cf1ec1863 [2021-10-28 08:45:00,088 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 08:45:00,108 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 08:45:00,111 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 08:45:00,112 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 08:45:00,113 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 08:45:00,114 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6c3bd0c-c1a4-448b-9c76-12abf27abaca/bin/uautomizer-UnR33cPsHg/../../sv-benchmarks/c/list-properties/alternating_list-2.i [2021-10-28 08:45:00,210 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6c3bd0c-c1a4-448b-9c76-12abf27abaca/bin/uautomizer-UnR33cPsHg/data/6b63824f4/115d568b752249f0986414b298ce409e/FLAGb195d328f [2021-10-28 08:45:00,790 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 08:45:00,790 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6c3bd0c-c1a4-448b-9c76-12abf27abaca/sv-benchmarks/c/list-properties/alternating_list-2.i [2021-10-28 08:45:00,808 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6c3bd0c-c1a4-448b-9c76-12abf27abaca/bin/uautomizer-UnR33cPsHg/data/6b63824f4/115d568b752249f0986414b298ce409e/FLAGb195d328f [2021-10-28 08:45:01,060 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6c3bd0c-c1a4-448b-9c76-12abf27abaca/bin/uautomizer-UnR33cPsHg/data/6b63824f4/115d568b752249f0986414b298ce409e [2021-10-28 08:45:01,063 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 08:45:01,064 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-28 08:45:01,066 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 08:45:01,066 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 08:45:01,069 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 08:45:01,070 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 08:45:01" (1/1) ... [2021-10-28 08:45:01,071 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59a60bad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:45:01, skipping insertion in model container [2021-10-28 08:45:01,072 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 08:45:01" (1/1) ... [2021-10-28 08:45:01,079 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 08:45:01,147 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 08:45:01,503 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_b6c3bd0c-c1a4-448b-9c76-12abf27abaca/sv-benchmarks/c/list-properties/alternating_list-2.i[23574,23587] [2021-10-28 08:45:01,507 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 08:45:01,518 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 08:45:01,582 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_b6c3bd0c-c1a4-448b-9c76-12abf27abaca/sv-benchmarks/c/list-properties/alternating_list-2.i[23574,23587] [2021-10-28 08:45:01,585 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 08:45:01,619 INFO L208 MainTranslator]: Completed translation [2021-10-28 08:45:01,619 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:45:01 WrapperNode [2021-10-28 08:45:01,621 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 08:45:01,623 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 08:45:01,623 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 08:45:01,623 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 08:45:01,635 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:45:01" (1/1) ... [2021-10-28 08:45:01,635 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:45:01" (1/1) ... [2021-10-28 08:45:01,670 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:45:01" (1/1) ... [2021-10-28 08:45:01,671 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:45:01" (1/1) ... [2021-10-28 08:45:01,697 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:45:01" (1/1) ... [2021-10-28 08:45:01,706 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:45:01" (1/1) ... [2021-10-28 08:45:01,714 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:45:01" (1/1) ... [2021-10-28 08:45:01,730 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 08:45:01,741 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 08:45:01,741 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 08:45:01,741 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 08:45:01,742 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:45:01" (1/1) ... [2021-10-28 08:45:01,751 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 08:45:01,762 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6c3bd0c-c1a4-448b-9c76-12abf27abaca/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:45:01,782 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6c3bd0c-c1a4-448b-9c76-12abf27abaca/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 08:45:01,813 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6c3bd0c-c1a4-448b-9c76-12abf27abaca/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 08:45:01,831 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-10-28 08:45:01,831 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 08:45:01,832 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-10-28 08:45:01,832 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-10-28 08:45:01,832 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-10-28 08:45:01,832 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-10-28 08:45:01,833 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-10-28 08:45:01,834 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-10-28 08:45:01,834 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2021-10-28 08:45:01,834 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-10-28 08:45:01,835 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-10-28 08:45:01,835 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-10-28 08:45:01,835 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-10-28 08:45:01,835 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-10-28 08:45:01,836 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-10-28 08:45:01,836 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 08:45:01,836 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-10-28 08:45:01,836 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-10-28 08:45:01,836 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-10-28 08:45:01,836 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-10-28 08:45:01,837 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-10-28 08:45:01,837 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-10-28 08:45:01,837 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-10-28 08:45:01,837 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-10-28 08:45:01,837 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-10-28 08:45:01,837 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-10-28 08:45:01,838 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-10-28 08:45:01,838 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-10-28 08:45:01,838 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-10-28 08:45:01,838 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-10-28 08:45:01,838 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-10-28 08:45:01,838 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-10-28 08:45:01,838 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-10-28 08:45:01,839 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-10-28 08:45:01,839 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-10-28 08:45:01,839 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-10-28 08:45:01,839 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-10-28 08:45:01,839 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-10-28 08:45:01,839 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-10-28 08:45:01,840 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-10-28 08:45:01,840 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-10-28 08:45:01,840 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-10-28 08:45:01,840 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-10-28 08:45:01,840 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-10-28 08:45:01,840 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-10-28 08:45:01,841 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-10-28 08:45:01,841 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-10-28 08:45:01,842 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-10-28 08:45:01,842 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-10-28 08:45:01,842 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-10-28 08:45:01,842 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-10-28 08:45:01,842 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-10-28 08:45:01,843 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-10-28 08:45:01,843 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-10-28 08:45:01,843 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-10-28 08:45:01,843 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-10-28 08:45:01,843 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-10-28 08:45:01,844 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-10-28 08:45:01,844 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-10-28 08:45:01,844 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-10-28 08:45:01,845 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-10-28 08:45:01,845 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-10-28 08:45:01,845 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-10-28 08:45:01,845 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-10-28 08:45:01,846 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-10-28 08:45:01,846 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-10-28 08:45:01,846 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-10-28 08:45:01,847 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-10-28 08:45:01,848 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-10-28 08:45:01,848 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-10-28 08:45:01,849 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-10-28 08:45:01,849 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-10-28 08:45:01,849 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-10-28 08:45:01,849 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-10-28 08:45:01,849 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-10-28 08:45:01,849 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-10-28 08:45:01,849 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-10-28 08:45:01,850 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-10-28 08:45:01,850 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-10-28 08:45:01,850 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-10-28 08:45:01,850 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-10-28 08:45:01,850 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-10-28 08:45:01,850 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-10-28 08:45:01,851 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-10-28 08:45:01,851 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-10-28 08:45:01,852 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-10-28 08:45:01,852 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-10-28 08:45:01,852 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-10-28 08:45:01,852 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-10-28 08:45:01,852 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-10-28 08:45:01,852 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-10-28 08:45:01,853 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-10-28 08:45:01,853 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-10-28 08:45:01,853 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-10-28 08:45:01,853 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-10-28 08:45:01,853 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-10-28 08:45:01,853 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-10-28 08:45:01,854 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-10-28 08:45:01,854 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-10-28 08:45:01,854 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-10-28 08:45:01,854 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-10-28 08:45:01,854 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-10-28 08:45:01,854 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-10-28 08:45:01,855 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-10-28 08:45:01,855 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-10-28 08:45:01,855 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-10-28 08:45:01,855 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-10-28 08:45:01,856 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-10-28 08:45:01,856 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-10-28 08:45:01,857 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-10-28 08:45:01,857 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-10-28 08:45:01,857 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-10-28 08:45:01,857 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-10-28 08:45:01,857 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-10-28 08:45:01,858 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-10-28 08:45:01,858 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-10-28 08:45:01,858 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-10-28 08:45:01,858 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-10-28 08:45:01,858 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-10-28 08:45:01,858 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-10-28 08:45:01,859 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-10-28 08:45:01,859 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-10-28 08:45:01,859 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-10-28 08:45:01,859 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2021-10-28 08:45:01,859 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-10-28 08:45:01,860 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-28 08:45:01,860 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-28 08:45:01,861 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-28 08:45:01,861 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-28 08:45:01,865 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-28 08:45:01,865 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-28 08:45:01,866 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-10-28 08:45:01,866 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-28 08:45:01,867 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 08:45:02,206 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2021-10-28 08:45:02,383 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 08:45:02,384 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2021-10-28 08:45:02,386 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 08:45:02 BoogieIcfgContainer [2021-10-28 08:45:02,386 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 08:45:02,388 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 08:45:02,388 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 08:45:02,391 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 08:45:02,392 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 08:45:01" (1/3) ... [2021-10-28 08:45:02,392 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34920e06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 08:45:02, skipping insertion in model container [2021-10-28 08:45:02,392 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:45:01" (2/3) ... [2021-10-28 08:45:02,393 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34920e06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 08:45:02, skipping insertion in model container [2021-10-28 08:45:02,393 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 08:45:02" (3/3) ... [2021-10-28 08:45:02,394 INFO L111 eAbstractionObserver]: Analyzing ICFG alternating_list-2.i [2021-10-28 08:45:02,400 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 08:45:02,400 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 30 error locations. [2021-10-28 08:45:02,445 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 08:45:02,451 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, mAutomataTypeConcurrency=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 [2021-10-28 08:45:02,452 INFO L340 AbstractCegarLoop]: Starting to check reachability of 30 error locations. [2021-10-28 08:45:02,469 INFO L276 IsEmpty]: Start isEmpty. Operand has 81 states, 44 states have (on average 1.9545454545454546) internal successors, (86), 75 states have internal predecessors, (86), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-10-28 08:45:02,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-28 08:45:02,491 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:45:02,492 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:45:02,492 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr8REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 25 more)] === [2021-10-28 08:45:02,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:45:02,498 INFO L85 PathProgramCache]: Analyzing trace with hash 1080134069, now seen corresponding path program 1 times [2021-10-28 08:45:02,546 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:45:02,546 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243022097] [2021-10-28 08:45:02,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:45:02,548 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:45:02,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:02,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 08:45:02,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:02,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:45:02,836 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:45:02,836 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243022097] [2021-10-28 08:45:02,838 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1243022097] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:45:02,838 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:45:02,839 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 08:45:02,841 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632113707] [2021-10-28 08:45:02,851 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 08:45:02,852 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:45:02,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 08:45:02,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 08:45:02,876 INFO L87 Difference]: Start difference. First operand has 81 states, 44 states have (on average 1.9545454545454546) internal successors, (86), 75 states have internal predecessors, (86), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 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) [2021-10-28 08:45:03,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:45:03,080 INFO L93 Difference]: Finished difference Result 81 states and 88 transitions. [2021-10-28 08:45:03,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 08:45:03,082 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 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 10 [2021-10-28 08:45:03,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:45:03,089 INFO L225 Difference]: With dead ends: 81 [2021-10-28 08:45:03,089 INFO L226 Difference]: Without dead ends: 74 [2021-10-28 08:45:03,091 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 08:45:03,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2021-10-28 08:45:03,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2021-10-28 08:45:03,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 41 states have (on average 1.853658536585366) internal successors, (76), 70 states have internal predecessors, (76), 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) [2021-10-28 08:45:03,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 79 transitions. [2021-10-28 08:45:03,127 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 79 transitions. Word has length 10 [2021-10-28 08:45:03,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:45:03,128 INFO L470 AbstractCegarLoop]: Abstraction has 74 states and 79 transitions. [2021-10-28 08:45:03,128 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 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) [2021-10-28 08:45:03,128 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 79 transitions. [2021-10-28 08:45:03,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-28 08:45:03,129 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:45:03,129 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:45:03,129 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-28 08:45:03,130 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr8REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 25 more)] === [2021-10-28 08:45:03,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:45:03,131 INFO L85 PathProgramCache]: Analyzing trace with hash -875617869, now seen corresponding path program 1 times [2021-10-28 08:45:03,131 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:45:03,131 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071023584] [2021-10-28 08:45:03,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:45:03,132 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:45:03,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:03,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 08:45:03,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:03,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:45:03,256 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:45:03,257 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071023584] [2021-10-28 08:45:03,257 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1071023584] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:45:03,257 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:45:03,257 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 08:45:03,258 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925361178] [2021-10-28 08:45:03,259 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 08:45:03,259 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:45:03,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 08:45:03,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 08:45:03,261 INFO L87 Difference]: Start difference. First operand 74 states and 79 transitions. Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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) [2021-10-28 08:45:03,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:45:03,474 INFO L93 Difference]: Finished difference Result 95 states and 103 transitions. [2021-10-28 08:45:03,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 08:45:03,475 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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 11 [2021-10-28 08:45:03,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:45:03,479 INFO L225 Difference]: With dead ends: 95 [2021-10-28 08:45:03,480 INFO L226 Difference]: Without dead ends: 95 [2021-10-28 08:45:03,481 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-28 08:45:03,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2021-10-28 08:45:03,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 75. [2021-10-28 08:45:03,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 49 states have (on average 1.7142857142857142) internal successors, (84), 71 states have internal predecessors, (84), 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) [2021-10-28 08:45:03,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 87 transitions. [2021-10-28 08:45:03,506 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 87 transitions. Word has length 11 [2021-10-28 08:45:03,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:45:03,506 INFO L470 AbstractCegarLoop]: Abstraction has 75 states and 87 transitions. [2021-10-28 08:45:03,507 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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) [2021-10-28 08:45:03,507 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 87 transitions. [2021-10-28 08:45:03,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-28 08:45:03,507 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:45:03,508 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:45:03,508 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-28 08:45:03,508 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr9REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 25 more)] === [2021-10-28 08:45:03,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:45:03,509 INFO L85 PathProgramCache]: Analyzing trace with hash -875617868, now seen corresponding path program 1 times [2021-10-28 08:45:03,509 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:45:03,509 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120230650] [2021-10-28 08:45:03,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:45:03,510 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:45:03,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:03,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 08:45:03,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:03,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:45:03,650 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:45:03,651 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120230650] [2021-10-28 08:45:03,651 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1120230650] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:45:03,651 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:45:03,651 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 08:45:03,652 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554635155] [2021-10-28 08:45:03,652 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 08:45:03,652 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:45:03,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 08:45:03,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 08:45:03,654 INFO L87 Difference]: Start difference. First operand 75 states and 87 transitions. Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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) [2021-10-28 08:45:03,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:45:03,870 INFO L93 Difference]: Finished difference Result 103 states and 113 transitions. [2021-10-28 08:45:03,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 08:45:03,871 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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 11 [2021-10-28 08:45:03,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:45:03,872 INFO L225 Difference]: With dead ends: 103 [2021-10-28 08:45:03,872 INFO L226 Difference]: Without dead ends: 103 [2021-10-28 08:45:03,873 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-28 08:45:03,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2021-10-28 08:45:03,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 91. [2021-10-28 08:45:03,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 65 states have (on average 1.5384615384615385) internal successors, (100), 87 states have internal predecessors, (100), 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) [2021-10-28 08:45:03,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 103 transitions. [2021-10-28 08:45:03,881 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 103 transitions. Word has length 11 [2021-10-28 08:45:03,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:45:03,881 INFO L470 AbstractCegarLoop]: Abstraction has 91 states and 103 transitions. [2021-10-28 08:45:03,882 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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) [2021-10-28 08:45:03,882 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 103 transitions. [2021-10-28 08:45:03,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-28 08:45:03,883 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:45:03,883 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:45:03,883 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-28 08:45:03,884 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr28ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 25 more)] === [2021-10-28 08:45:03,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:45:03,884 INFO L85 PathProgramCache]: Analyzing trace with hash 888231595, now seen corresponding path program 1 times [2021-10-28 08:45:03,885 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:45:03,885 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154941217] [2021-10-28 08:45:03,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:45:03,885 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:45:03,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:03,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 08:45:03,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:03,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:45:03,981 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:45:03,981 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154941217] [2021-10-28 08:45:03,983 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [154941217] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:45:03,985 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:45:03,985 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 08:45:03,985 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021379287] [2021-10-28 08:45:03,987 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 08:45:03,987 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:45:03,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 08:45:03,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 08:45:03,989 INFO L87 Difference]: Start difference. First operand 91 states and 103 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 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) [2021-10-28 08:45:04,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:45:04,124 INFO L93 Difference]: Finished difference Result 140 states and 151 transitions. [2021-10-28 08:45:04,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 08:45:04,125 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 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 18 [2021-10-28 08:45:04,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:45:04,130 INFO L225 Difference]: With dead ends: 140 [2021-10-28 08:45:04,130 INFO L226 Difference]: Without dead ends: 140 [2021-10-28 08:45:04,132 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 08:45:04,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2021-10-28 08:45:04,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 100. [2021-10-28 08:45:04,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 74 states have (on average 1.527027027027027) internal successors, (113), 96 states have internal predecessors, (113), 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) [2021-10-28 08:45:04,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 116 transitions. [2021-10-28 08:45:04,147 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 116 transitions. Word has length 18 [2021-10-28 08:45:04,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:45:04,148 INFO L470 AbstractCegarLoop]: Abstraction has 100 states and 116 transitions. [2021-10-28 08:45:04,148 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 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) [2021-10-28 08:45:04,148 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 116 transitions. [2021-10-28 08:45:04,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-28 08:45:04,149 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:45:04,149 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:45:04,150 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-28 08:45:04,150 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr28ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 25 more)] === [2021-10-28 08:45:04,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:45:04,151 INFO L85 PathProgramCache]: Analyzing trace with hash 887923765, now seen corresponding path program 1 times [2021-10-28 08:45:04,151 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:45:04,151 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248998785] [2021-10-28 08:45:04,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:45:04,152 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:45:04,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:04,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 08:45:04,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:04,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:45:04,269 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:45:04,270 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248998785] [2021-10-28 08:45:04,270 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1248998785] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:45:04,270 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:45:04,270 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-28 08:45:04,270 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79677371] [2021-10-28 08:45:04,271 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 08:45:04,271 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:45:04,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 08:45:04,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-28 08:45:04,272 INFO L87 Difference]: Start difference. First operand 100 states and 116 transitions. Second operand has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 states have internal predecessors, (15), 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) [2021-10-28 08:45:04,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:45:04,493 INFO L93 Difference]: Finished difference Result 145 states and 159 transitions. [2021-10-28 08:45:04,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 08:45:04,494 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 states have internal predecessors, (15), 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 18 [2021-10-28 08:45:04,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:45:04,495 INFO L225 Difference]: With dead ends: 145 [2021-10-28 08:45:04,495 INFO L226 Difference]: Without dead ends: 145 [2021-10-28 08:45:04,495 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-10-28 08:45:04,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2021-10-28 08:45:04,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 103. [2021-10-28 08:45:04,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 77 states have (on average 1.5064935064935066) internal successors, (116), 99 states have internal predecessors, (116), 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) [2021-10-28 08:45:04,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 119 transitions. [2021-10-28 08:45:04,503 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 119 transitions. Word has length 18 [2021-10-28 08:45:04,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:45:04,503 INFO L470 AbstractCegarLoop]: Abstraction has 103 states and 119 transitions. [2021-10-28 08:45:04,503 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 states have internal predecessors, (15), 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) [2021-10-28 08:45:04,504 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 119 transitions. [2021-10-28 08:45:04,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-28 08:45:04,504 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:45:04,505 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:45:04,505 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-28 08:45:04,505 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr26ASSERT_VIOLATIONMEMORY_FREE === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 25 more)] === [2021-10-28 08:45:04,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:45:04,506 INFO L85 PathProgramCache]: Analyzing trace with hash 1724463005, now seen corresponding path program 1 times [2021-10-28 08:45:04,506 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:45:04,506 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672097576] [2021-10-28 08:45:04,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:45:04,507 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:45:04,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:04,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 08:45:04,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:04,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:45:04,596 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:45:04,596 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672097576] [2021-10-28 08:45:04,596 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672097576] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:45:04,597 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:45:04,597 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 08:45:04,597 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643394001] [2021-10-28 08:45:04,597 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 08:45:04,597 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:45:04,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 08:45:04,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 08:45:04,598 INFO L87 Difference]: Start difference. First operand 103 states and 119 transitions. Second operand has 5 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 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) [2021-10-28 08:45:04,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:45:04,736 INFO L93 Difference]: Finished difference Result 110 states and 125 transitions. [2021-10-28 08:45:04,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 08:45:04,736 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 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 19 [2021-10-28 08:45:04,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:45:04,737 INFO L225 Difference]: With dead ends: 110 [2021-10-28 08:45:04,738 INFO L226 Difference]: Without dead ends: 110 [2021-10-28 08:45:04,738 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-28 08:45:04,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2021-10-28 08:45:04,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 104. [2021-10-28 08:45:04,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 78 states have (on average 1.5) internal successors, (117), 100 states have internal predecessors, (117), 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) [2021-10-28 08:45:04,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 120 transitions. [2021-10-28 08:45:04,744 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 120 transitions. Word has length 19 [2021-10-28 08:45:04,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:45:04,745 INFO L470 AbstractCegarLoop]: Abstraction has 104 states and 120 transitions. [2021-10-28 08:45:04,745 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 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) [2021-10-28 08:45:04,745 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 120 transitions. [2021-10-28 08:45:04,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-28 08:45:04,746 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:45:04,746 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:45:04,746 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-28 08:45:04,746 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr22ASSERT_VIOLATIONMEMORY_FREE === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 25 more)] === [2021-10-28 08:45:04,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:45:04,747 INFO L85 PathProgramCache]: Analyzing trace with hash 1918791492, now seen corresponding path program 1 times [2021-10-28 08:45:04,747 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:45:04,747 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671313430] [2021-10-28 08:45:04,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:45:04,748 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:45:04,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:04,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 08:45:04,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:04,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:45:04,855 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:45:04,856 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671313430] [2021-10-28 08:45:04,856 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1671313430] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:45:04,856 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:45:04,856 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-28 08:45:04,856 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071549808] [2021-10-28 08:45:04,857 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 08:45:04,857 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:45:04,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 08:45:04,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-28 08:45:04,858 INFO L87 Difference]: Start difference. First operand 104 states and 120 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) [2021-10-28 08:45:05,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:45:05,010 INFO L93 Difference]: Finished difference Result 114 states and 128 transitions. [2021-10-28 08:45:05,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-28 08:45:05,010 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 [2021-10-28 08:45:05,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:45:05,012 INFO L225 Difference]: With dead ends: 114 [2021-10-28 08:45:05,012 INFO L226 Difference]: Without dead ends: 114 [2021-10-28 08:45:05,013 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-10-28 08:45:05,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2021-10-28 08:45:05,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 106. [2021-10-28 08:45:05,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 80 states have (on average 1.4875) internal successors, (119), 102 states have internal predecessors, (119), 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) [2021-10-28 08:45:05,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 122 transitions. [2021-10-28 08:45:05,030 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 122 transitions. Word has length 20 [2021-10-28 08:45:05,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:45:05,031 INFO L470 AbstractCegarLoop]: Abstraction has 106 states and 122 transitions. [2021-10-28 08:45:05,031 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) [2021-10-28 08:45:05,032 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 122 transitions. [2021-10-28 08:45:05,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-28 08:45:05,034 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:45:05,034 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:45:05,035 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-28 08:45:05,035 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr23ASSERT_VIOLATIONMEMORY_FREE === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 25 more)] === [2021-10-28 08:45:05,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:45:05,036 INFO L85 PathProgramCache]: Analyzing trace with hash -647005726, now seen corresponding path program 1 times [2021-10-28 08:45:05,036 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:45:05,037 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274539248] [2021-10-28 08:45:05,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:45:05,037 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:45:05,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:05,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 08:45:05,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:05,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:45:05,164 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:45:05,164 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274539248] [2021-10-28 08:45:05,164 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1274539248] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:45:05,164 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:45:05,165 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-28 08:45:05,165 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937406967] [2021-10-28 08:45:05,165 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-28 08:45:05,165 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:45:05,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-28 08:45:05,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-10-28 08:45:05,166 INFO L87 Difference]: Start difference. First operand 106 states and 122 transitions. Second operand has 8 states, 8 states have (on average 2.25) internal successors, (18), 7 states have internal predecessors, (18), 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) [2021-10-28 08:45:05,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:45:05,412 INFO L93 Difference]: Finished difference Result 121 states and 134 transitions. [2021-10-28 08:45:05,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-28 08:45:05,413 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 7 states have internal predecessors, (18), 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 21 [2021-10-28 08:45:05,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:45:05,414 INFO L225 Difference]: With dead ends: 121 [2021-10-28 08:45:05,414 INFO L226 Difference]: Without dead ends: 121 [2021-10-28 08:45:05,414 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2021-10-28 08:45:05,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2021-10-28 08:45:05,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 109. [2021-10-28 08:45:05,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 83 states have (on average 1.4698795180722892) internal successors, (122), 105 states have internal predecessors, (122), 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) [2021-10-28 08:45:05,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 125 transitions. [2021-10-28 08:45:05,427 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 125 transitions. Word has length 21 [2021-10-28 08:45:05,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:45:05,427 INFO L470 AbstractCegarLoop]: Abstraction has 109 states and 125 transitions. [2021-10-28 08:45:05,427 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 7 states have internal predecessors, (18), 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) [2021-10-28 08:45:05,427 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 125 transitions. [2021-10-28 08:45:05,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-28 08:45:05,431 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:45:05,432 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:45:05,432 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-28 08:45:05,432 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr29ENSURES_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 25 more)] === [2021-10-28 08:45:05,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:45:05,433 INFO L85 PathProgramCache]: Analyzing trace with hash -648422782, now seen corresponding path program 1 times [2021-10-28 08:45:05,433 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:45:05,433 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829966750] [2021-10-28 08:45:05,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:45:05,433 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:45:05,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:05,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 08:45:05,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:05,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:45:05,577 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:45:05,577 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829966750] [2021-10-28 08:45:05,577 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [829966750] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:45:05,577 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:45:05,577 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-28 08:45:05,578 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446744655] [2021-10-28 08:45:05,578 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 08:45:05,578 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:45:05,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 08:45:05,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-28 08:45:05,581 INFO L87 Difference]: Start difference. First operand 109 states and 125 transitions. Second operand has 6 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 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) [2021-10-28 08:45:05,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:45:05,688 INFO L93 Difference]: Finished difference Result 116 states and 131 transitions. [2021-10-28 08:45:05,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 08:45:05,689 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 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 21 [2021-10-28 08:45:05,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:45:05,691 INFO L225 Difference]: With dead ends: 116 [2021-10-28 08:45:05,691 INFO L226 Difference]: Without dead ends: 105 [2021-10-28 08:45:05,695 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-10-28 08:45:05,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2021-10-28 08:45:05,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2021-10-28 08:45:05,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 79 states have (on average 1.481012658227848) internal successors, (117), 101 states have internal predecessors, (117), 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) [2021-10-28 08:45:05,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 120 transitions. [2021-10-28 08:45:05,699 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 120 transitions. Word has length 21 [2021-10-28 08:45:05,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:45:05,700 INFO L470 AbstractCegarLoop]: Abstraction has 105 states and 120 transitions. [2021-10-28 08:45:05,700 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 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) [2021-10-28 08:45:05,700 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 120 transitions. [2021-10-28 08:45:05,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-28 08:45:05,703 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:45:05,703 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:45:05,704 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-28 08:45:05,704 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr8REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 25 more)] === [2021-10-28 08:45:05,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:45:05,704 INFO L85 PathProgramCache]: Analyzing trace with hash 1983052608, now seen corresponding path program 1 times [2021-10-28 08:45:05,704 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:45:05,706 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574085397] [2021-10-28 08:45:05,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:45:05,706 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:45:05,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:05,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 08:45:05,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:05,819 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:45:05,819 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:45:05,820 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574085397] [2021-10-28 08:45:05,820 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1574085397] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:45:05,820 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:45:05,820 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-28 08:45:05,820 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724540134] [2021-10-28 08:45:05,821 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 08:45:05,821 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:45:05,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 08:45:05,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-28 08:45:05,822 INFO L87 Difference]: Start difference. First operand 105 states and 120 transitions. Second operand has 7 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 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) [2021-10-28 08:45:06,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:45:06,007 INFO L93 Difference]: Finished difference Result 107 states and 122 transitions. [2021-10-28 08:45:06,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 08:45:06,008 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 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 21 [2021-10-28 08:45:06,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:45:06,009 INFO L225 Difference]: With dead ends: 107 [2021-10-28 08:45:06,009 INFO L226 Difference]: Without dead ends: 107 [2021-10-28 08:45:06,010 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-10-28 08:45:06,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2021-10-28 08:45:06,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 102. [2021-10-28 08:45:06,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 79 states have (on average 1.4430379746835442) internal successors, (114), 98 states have internal predecessors, (114), 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) [2021-10-28 08:45:06,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 117 transitions. [2021-10-28 08:45:06,013 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 117 transitions. Word has length 21 [2021-10-28 08:45:06,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:45:06,013 INFO L470 AbstractCegarLoop]: Abstraction has 102 states and 117 transitions. [2021-10-28 08:45:06,014 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 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) [2021-10-28 08:45:06,014 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 117 transitions. [2021-10-28 08:45:06,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-28 08:45:06,014 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:45:06,014 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:45:06,015 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-10-28 08:45:06,015 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr9REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 25 more)] === [2021-10-28 08:45:06,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:45:06,015 INFO L85 PathProgramCache]: Analyzing trace with hash 1983052609, now seen corresponding path program 1 times [2021-10-28 08:45:06,015 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:45:06,015 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083174276] [2021-10-28 08:45:06,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:45:06,016 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:45:06,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:06,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 08:45:06,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:06,114 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:45:06,114 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:45:06,114 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083174276] [2021-10-28 08:45:06,115 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1083174276] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:45:06,115 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:45:06,115 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-28 08:45:06,115 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571056041] [2021-10-28 08:45:06,115 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 08:45:06,115 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:45:06,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 08:45:06,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-28 08:45:06,116 INFO L87 Difference]: Start difference. First operand 102 states and 117 transitions. Second operand has 7 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 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) [2021-10-28 08:45:06,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:45:06,353 INFO L93 Difference]: Finished difference Result 98 states and 111 transitions. [2021-10-28 08:45:06,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-28 08:45:06,354 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 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 21 [2021-10-28 08:45:06,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:45:06,355 INFO L225 Difference]: With dead ends: 98 [2021-10-28 08:45:06,355 INFO L226 Difference]: Without dead ends: 98 [2021-10-28 08:45:06,355 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2021-10-28 08:45:06,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2021-10-28 08:45:06,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 90. [2021-10-28 08:45:06,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 72 states have (on average 1.3888888888888888) internal successors, (100), 86 states have internal predecessors, (100), 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) [2021-10-28 08:45:06,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 103 transitions. [2021-10-28 08:45:06,359 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 103 transitions. Word has length 21 [2021-10-28 08:45:06,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:45:06,359 INFO L470 AbstractCegarLoop]: Abstraction has 90 states and 103 transitions. [2021-10-28 08:45:06,359 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 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) [2021-10-28 08:45:06,359 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 103 transitions. [2021-10-28 08:45:06,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-28 08:45:06,360 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:45:06,360 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:45:06,360 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-10-28 08:45:06,361 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr28ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 25 more)] === [2021-10-28 08:45:06,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:45:06,361 INFO L85 PathProgramCache]: Analyzing trace with hash -1153932792, now seen corresponding path program 1 times [2021-10-28 08:45:06,361 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:45:06,361 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491905305] [2021-10-28 08:45:06,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:45:06,362 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:45:06,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 08:45:06,377 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 08:45:06,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 08:45:06,418 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 08:45:06,418 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-10-28 08:45:06,419 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location mainErr28ASSERT_VIOLATIONMEMORY_LEAK [2021-10-28 08:45:06,421 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr0REQUIRES_VIOLATION [2021-10-28 08:45:06,422 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr1REQUIRES_VIOLATION [2021-10-28 08:45:06,422 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr2REQUIRES_VIOLATION [2021-10-28 08:45:06,422 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr3REQUIRES_VIOLATION [2021-10-28 08:45:06,422 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr4REQUIRES_VIOLATION [2021-10-28 08:45:06,423 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr5REQUIRES_VIOLATION [2021-10-28 08:45:06,423 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr6REQUIRES_VIOLATION [2021-10-28 08:45:06,423 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr7REQUIRES_VIOLATION [2021-10-28 08:45:06,423 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr8REQUIRES_VIOLATION [2021-10-28 08:45:06,423 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr9REQUIRES_VIOLATION [2021-10-28 08:45:06,423 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr10REQUIRES_VIOLATION [2021-10-28 08:45:06,424 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr11REQUIRES_VIOLATION [2021-10-28 08:45:06,424 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr12REQUIRES_VIOLATION [2021-10-28 08:45:06,424 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr13REQUIRES_VIOLATION [2021-10-28 08:45:06,424 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr14REQUIRES_VIOLATION [2021-10-28 08:45:06,424 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr15REQUIRES_VIOLATION [2021-10-28 08:45:06,424 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr16REQUIRES_VIOLATION [2021-10-28 08:45:06,424 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr17REQUIRES_VIOLATION [2021-10-28 08:45:06,425 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr18REQUIRES_VIOLATION [2021-10-28 08:45:06,425 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr19REQUIRES_VIOLATION [2021-10-28 08:45:06,425 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr20REQUIRES_VIOLATION [2021-10-28 08:45:06,425 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr21REQUIRES_VIOLATION [2021-10-28 08:45:06,425 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr22ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 08:45:06,425 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr23ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 08:45:06,425 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr24ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 08:45:06,426 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr25ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 08:45:06,426 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr26ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 08:45:06,426 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr27ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 08:45:06,426 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr29ENSURES_VIOLATIONMEMORY_LEAK [2021-10-28 08:45:06,426 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-10-28 08:45:06,431 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:45:06,435 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 08:45:06,461 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 08:45:06 BoogieIcfgContainer [2021-10-28 08:45:06,461 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 08:45:06,462 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 08:45:06,462 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 08:45:06,462 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 08:45:06,463 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 08:45:02" (3/4) ... [2021-10-28 08:45:06,465 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-28 08:45:06,516 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6c3bd0c-c1a4-448b-9c76-12abf27abaca/bin/uautomizer-UnR33cPsHg/witness.graphml [2021-10-28 08:45:06,516 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 08:45:06,518 INFO L168 Benchmark]: Toolchain (without parser) took 5452.90 ms. Allocated memory was 109.1 MB in the beginning and 136.3 MB in the end (delta: 27.3 MB). Free memory was 68.6 MB in the beginning and 109.2 MB in the end (delta: -40.6 MB). Peak memory consumption was 55.7 MB. Max. memory is 16.1 GB. [2021-10-28 08:45:06,518 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 109.1 MB. Free memory is still 86.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 08:45:06,519 INFO L168 Benchmark]: CACSL2BoogieTranslator took 556.14 ms. Allocated memory is still 109.1 MB. Free memory was 68.4 MB in the beginning and 75.4 MB in the end (delta: -7.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-28 08:45:06,519 INFO L168 Benchmark]: Boogie Preprocessor took 117.72 ms. Allocated memory is still 109.1 MB. Free memory was 75.4 MB in the beginning and 72.9 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 08:45:06,520 INFO L168 Benchmark]: RCFGBuilder took 645.16 ms. Allocated memory is still 109.1 MB. Free memory was 72.9 MB in the beginning and 50.3 MB in the end (delta: 22.7 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. [2021-10-28 08:45:06,520 INFO L168 Benchmark]: TraceAbstraction took 4073.77 ms. Allocated memory was 109.1 MB in the beginning and 136.3 MB in the end (delta: 27.3 MB). Free memory was 49.9 MB in the beginning and 43.3 MB in the end (delta: 6.6 MB). Peak memory consumption was 36.7 MB. Max. memory is 16.1 GB. [2021-10-28 08:45:06,520 INFO L168 Benchmark]: Witness Printer took 54.76 ms. Allocated memory is still 136.3 MB. Free memory was 43.3 MB in the beginning and 109.2 MB in the end (delta: -65.9 MB). Peak memory consumption was 2.3 MB. Max. memory is 16.1 GB. [2021-10-28 08:45:06,522 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 109.1 MB. Free memory is still 86.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 556.14 ms. Allocated memory is still 109.1 MB. Free memory was 68.4 MB in the beginning and 75.4 MB in the end (delta: -7.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 117.72 ms. Allocated memory is still 109.1 MB. Free memory was 75.4 MB in the beginning and 72.9 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 645.16 ms. Allocated memory is still 109.1 MB. Free memory was 72.9 MB in the beginning and 50.3 MB in the end (delta: 22.7 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4073.77 ms. Allocated memory was 109.1 MB in the beginning and 136.3 MB in the end (delta: 27.3 MB). Free memory was 49.9 MB in the beginning and 43.3 MB in the end (delta: 6.6 MB). Peak memory consumption was 36.7 MB. Max. memory is 16.1 GB. * Witness Printer took 54.76 ms. Allocated memory is still 136.3 MB. Free memory was 43.3 MB in the beginning and 109.2 MB in the end (delta: -65.9 MB). Peak memory consumption was 2.3 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, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 573]: not all allocated memory was freed not all allocated memory was freed We found a FailurePath: [L532] int flag = 1; [L533] List a = (List) malloc(sizeof(struct node)); [L534] COND FALSE !(a == 0) VAL [a={-1:0}, flag=1] [L535] List t; [L536] List p = a; VAL [a={-1:0}, flag=1, p={-1:0}] [L537] COND TRUE __VERIFIER_nondet_int() [L538] COND TRUE \read(flag) VAL [a={-1:0}, flag=1, p={-1:0}] [L539] p->h = 2 VAL [a={-1:0}, flag=1, p={-1:0}] [L540] flag = 0 VAL [a={-1:0}, flag=0, p={-1:0}] [L545] t = (List) malloc(sizeof(struct node)) [L546] COND FALSE !(t == 0) VAL [a={-1:0}, flag=0, p={-1:0}, t={-2:0}] [L547] p->n = t VAL [a={-1:0}, flag=0, p={-1:0}, t={-2:0}] [L548] EXPR p->n VAL [a={-1:0}, flag=0, p={-1:0}, p->n={-2:0}, t={-2:0}] [L548] p = p->n [L537] COND FALSE !(__VERIFIER_nondet_int()) [L550] p->h = 3 VAL [a={-1:0}, flag=0, p={-2:0}, t={-2:0}] [L551] p = a [L552] flag = 1 VAL [a={-1:0}, flag=1, p={-1:0}, t={-2:0}] [L553] EXPR p->h VAL [a={-1:0}, flag=1, p={-1:0}, p->h=2, t={-2:0}] [L553] COND TRUE p->h != 3 [L554] COND TRUE \read(flag) [L555] flag = 0 VAL [a={-1:0}, flag=0, p={-1:0}, t={-2:0}] [L556] EXPR p->h VAL [a={-1:0}, flag=0, p={-1:0}, p->h=2, t={-2:0}] [L556] COND TRUE p->h != 1 [L573] reach_error() VAL [a={-1:0}, flag=0, p={-1:0}, t={-2:0}] - UnprovableResult [Line: 539]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 539]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 542]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 542]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 547]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 547]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 548]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 548]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 550]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 550]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 553]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 553]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 556]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 556]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 560]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 560]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 563]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 563]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 566]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 566]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 568]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 568]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 569]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 569]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 569]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 571]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 571]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 571]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 531]: 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 10 procedures, 100 locations, 30 error locations. Started 1 CEGAR loops. OverallTime: 3.9s, OverallIterations: 12, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 606 SDtfs, 840 SDslu, 952 SDs, 0 SdLazy, 1694 SolverSat, 122 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 93 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=109occurred in iteration=8, InterpolantAutomatonStates: 70, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 11 MinimizatonAttempts, 153 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 219 NumberOfCodeBlocks, 219 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 180 ConstructedInterpolants, 0 QuantifiedInterpolants, 824 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 PerfectInterpolantSequences, 4/4 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! [2021-10-28 08:45:06,568 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6c3bd0c-c1a4-448b-9c76-12abf27abaca/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...