./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/memsafety-bftpd/bftpd_1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cd72010-c09b-4bd3-84e9-04440f91be35/bin/uautomizer-UnR33cPsHg/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cd72010-c09b-4bd3-84e9-04440f91be35/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_2cd72010-c09b-4bd3-84e9-04440f91be35/bin/uautomizer-UnR33cPsHg/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cd72010-c09b-4bd3-84e9-04440f91be35/bin/uautomizer-UnR33cPsHg/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety-bftpd/bftpd_1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cd72010-c09b-4bd3-84e9-04440f91be35/bin/uautomizer-UnR33cPsHg/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cd72010-c09b-4bd3-84e9-04440f91be35/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-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 10f5db0b7f76a0d4c4c35217e21dd4a594e7457adb3230ac21a302fd5d7ee15c ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cd72010-c09b-4bd3-84e9-04440f91be35/bin/uautomizer-UnR33cPsHg/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cd72010-c09b-4bd3-84e9-04440f91be35/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_2cd72010-c09b-4bd3-84e9-04440f91be35/bin/uautomizer-UnR33cPsHg/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cd72010-c09b-4bd3-84e9-04440f91be35/bin/uautomizer-UnR33cPsHg/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety-bftpd/bftpd_1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cd72010-c09b-4bd3-84e9-04440f91be35/bin/uautomizer-UnR33cPsHg/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cd72010-c09b-4bd3-84e9-04440f91be35/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-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 10f5db0b7f76a0d4c4c35217e21dd4a594e7457adb3230ac21a302fd5d7ee15c ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cd72010-c09b-4bd3-84e9-04440f91be35/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 08:59:50,647 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 08:59:50,649 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 08:59:50,684 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 08:59:50,684 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 08:59:50,686 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 08:59:50,688 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 08:59:50,690 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 08:59:50,693 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 08:59:50,694 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 08:59:50,696 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 08:59:50,697 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 08:59:50,698 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 08:59:50,699 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 08:59:50,701 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 08:59:50,703 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 08:59:50,704 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 08:59:50,705 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 08:59:50,707 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 08:59:50,710 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 08:59:50,712 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 08:59:50,717 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 08:59:50,719 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 08:59:50,721 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 08:59:50,725 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 08:59:50,732 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 08:59:50,732 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 08:59:50,734 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 08:59:50,735 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 08:59:50,737 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 08:59:50,738 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 08:59:50,739 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 08:59:50,741 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 08:59:50,742 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 08:59:50,744 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 08:59:50,744 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 08:59:50,745 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 08:59:50,745 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 08:59:50,746 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 08:59:50,747 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 08:59:50,748 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 08:59:50,749 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cd72010-c09b-4bd3-84e9-04440f91be35/bin/uautomizer-UnR33cPsHg/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-10-28 08:59:50,796 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 08:59:50,796 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 08:59:50,801 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 08:59:50,801 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 08:59:50,808 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 08:59:50,809 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 08:59:50,809 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 08:59:50,810 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 08:59:50,810 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 08:59:50,810 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-28 08:59:50,811 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 08:59:50,812 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 08:59:50,812 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 08:59:50,812 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-28 08:59:50,812 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-28 08:59:50,813 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-28 08:59:50,813 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 08:59:50,813 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-28 08:59:50,814 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 08:59:50,814 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 08:59:50,814 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 08:59:50,814 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 08:59:50,815 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 08:59:50,815 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 08:59:50,815 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 08:59:50,816 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 08:59:50,816 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 08:59:50,816 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-28 08:59:50,817 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 08:59:50,817 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_2cd72010-c09b-4bd3-84e9-04440f91be35/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cd72010-c09b-4bd3-84e9-04440f91be35/bin/uautomizer-UnR33cPsHg Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 10f5db0b7f76a0d4c4c35217e21dd4a594e7457adb3230ac21a302fd5d7ee15c [2021-10-28 08:59:51,145 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 08:59:51,174 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 08:59:51,177 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 08:59:51,179 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 08:59:51,180 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 08:59:51,181 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cd72010-c09b-4bd3-84e9-04440f91be35/bin/uautomizer-UnR33cPsHg/../../sv-benchmarks/c/memsafety-bftpd/bftpd_1.i [2021-10-28 08:59:51,247 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cd72010-c09b-4bd3-84e9-04440f91be35/bin/uautomizer-UnR33cPsHg/data/fe7dc13f5/bc7892c7b3cc4d95a2693962e6a9ec6d/FLAG09860fcfa [2021-10-28 08:59:51,863 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 08:59:51,864 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cd72010-c09b-4bd3-84e9-04440f91be35/sv-benchmarks/c/memsafety-bftpd/bftpd_1.i [2021-10-28 08:59:51,897 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cd72010-c09b-4bd3-84e9-04440f91be35/bin/uautomizer-UnR33cPsHg/data/fe7dc13f5/bc7892c7b3cc4d95a2693962e6a9ec6d/FLAG09860fcfa [2021-10-28 08:59:52,112 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cd72010-c09b-4bd3-84e9-04440f91be35/bin/uautomizer-UnR33cPsHg/data/fe7dc13f5/bc7892c7b3cc4d95a2693962e6a9ec6d [2021-10-28 08:59:52,119 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 08:59:52,121 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-28 08:59:52,124 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 08:59:52,124 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 08:59:52,128 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 08:59:52,129 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 08:59:52" (1/1) ... [2021-10-28 08:59:52,131 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c315edf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:59:52, skipping insertion in model container [2021-10-28 08:59:52,131 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 08:59:52" (1/1) ... [2021-10-28 08:59:52,138 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 08:59:52,199 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 08:59:52,677 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 08:59:52,694 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 08:59:52,768 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 08:59:52,815 INFO L208 MainTranslator]: Completed translation [2021-10-28 08:59:52,816 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:59:52 WrapperNode [2021-10-28 08:59:52,816 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 08:59:52,817 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 08:59:52,817 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 08:59:52,818 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 08:59:52,829 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:59:52" (1/1) ... [2021-10-28 08:59:52,831 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:59:52" (1/1) ... [2021-10-28 08:59:52,851 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:59:52" (1/1) ... [2021-10-28 08:59:52,865 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:59:52" (1/1) ... [2021-10-28 08:59:52,892 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:59:52" (1/1) ... [2021-10-28 08:59:52,903 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:59:52" (1/1) ... [2021-10-28 08:59:52,909 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:59:52" (1/1) ... [2021-10-28 08:59:52,924 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 08:59:52,925 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 08:59:52,925 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 08:59:52,925 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 08:59:52,934 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:59:52" (1/1) ... [2021-10-28 08:59:52,943 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 08:59:52,960 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cd72010-c09b-4bd3-84e9-04440f91be35/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:59:52,971 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cd72010-c09b-4bd3-84e9-04440f91be35/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 08:59:52,973 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cd72010-c09b-4bd3-84e9-04440f91be35/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 08:59:53,004 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-10-28 08:59:53,004 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 08:59:53,004 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~~TO~VOID [2021-10-28 08:59:53,005 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-10-28 08:59:53,005 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-10-28 08:59:53,005 INFO L138 BoogieDeclarations]: Found implementation of procedure parse_input [2021-10-28 08:59:53,005 INFO L138 BoogieDeclarations]: Found implementation of procedure c1 [2021-10-28 08:59:53,005 INFO L138 BoogieDeclarations]: Found implementation of procedure c2 [2021-10-28 08:59:53,005 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-10-28 08:59:53,006 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-10-28 08:59:53,006 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-10-28 08:59:53,006 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-10-28 08:59:53,006 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-10-28 08:59:53,006 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-10-28 08:59:53,006 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-10-28 08:59:53,007 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-10-28 08:59:53,007 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-10-28 08:59:53,007 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-10-28 08:59:53,007 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-10-28 08:59:53,007 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-10-28 08:59:53,008 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-10-28 08:59:53,008 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-10-28 08:59:53,008 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-10-28 08:59:53,008 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-10-28 08:59:53,008 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-10-28 08:59:53,008 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-10-28 08:59:53,009 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-10-28 08:59:53,009 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-10-28 08:59:53,009 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-10-28 08:59:53,009 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-10-28 08:59:53,009 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-10-28 08:59:53,009 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-10-28 08:59:53,010 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-10-28 08:59:53,010 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-10-28 08:59:53,010 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-10-28 08:59:53,010 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-10-28 08:59:53,010 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-10-28 08:59:53,010 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-10-28 08:59:53,010 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-10-28 08:59:53,011 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-10-28 08:59:53,011 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-10-28 08:59:53,011 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-10-28 08:59:53,011 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-10-28 08:59:53,011 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-10-28 08:59:53,011 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-10-28 08:59:53,012 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-10-28 08:59:53,012 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-10-28 08:59:53,012 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-10-28 08:59:53,012 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-10-28 08:59:53,012 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-10-28 08:59:53,012 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-10-28 08:59:53,013 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-10-28 08:59:53,013 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-10-28 08:59:53,013 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-10-28 08:59:53,013 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-10-28 08:59:53,013 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-10-28 08:59:53,014 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-10-28 08:59:53,014 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-10-28 08:59:53,014 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-10-28 08:59:53,014 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-10-28 08:59:53,014 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-10-28 08:59:53,014 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-10-28 08:59:53,015 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-10-28 08:59:53,015 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-10-28 08:59:53,015 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-10-28 08:59:53,015 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2021-10-28 08:59:53,015 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-10-28 08:59:53,015 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-10-28 08:59:53,016 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-10-28 08:59:53,016 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-10-28 08:59:53,016 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-10-28 08:59:53,016 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-10-28 08:59:53,016 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-10-28 08:59:53,016 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-10-28 08:59:53,017 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-10-28 08:59:53,017 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-10-28 08:59:53,017 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-10-28 08:59:53,017 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-10-28 08:59:53,017 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-10-28 08:59:53,017 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-10-28 08:59:53,018 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-10-28 08:59:53,018 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-10-28 08:59:53,018 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-10-28 08:59:53,018 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-10-28 08:59:53,018 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-10-28 08:59:53,018 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-10-28 08:59:53,019 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-10-28 08:59:53,019 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-10-28 08:59:53,019 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-10-28 08:59:53,019 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-10-28 08:59:53,019 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-10-28 08:59:53,019 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-10-28 08:59:53,019 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-10-28 08:59:53,020 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-10-28 08:59:53,020 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-10-28 08:59:53,020 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-10-28 08:59:53,020 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-10-28 08:59:53,020 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-10-28 08:59:53,020 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-10-28 08:59:53,021 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-10-28 08:59:53,021 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-10-28 08:59:53,021 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-10-28 08:59:53,021 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-10-28 08:59:53,021 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-10-28 08:59:53,021 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-10-28 08:59:53,022 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-10-28 08:59:53,022 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-10-28 08:59:53,022 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-10-28 08:59:53,022 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-10-28 08:59:53,022 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-10-28 08:59:53,022 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-10-28 08:59:53,023 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-10-28 08:59:53,023 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-10-28 08:59:53,023 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-10-28 08:59:53,023 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2021-10-28 08:59:53,023 INFO L130 BoogieDeclarations]: Found specification of procedure memmove [2021-10-28 08:59:53,023 INFO L130 BoogieDeclarations]: Found specification of procedure memccpy [2021-10-28 08:59:53,024 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2021-10-28 08:59:53,024 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-10-28 08:59:53,024 INFO L130 BoogieDeclarations]: Found specification of procedure memchr [2021-10-28 08:59:53,024 INFO L130 BoogieDeclarations]: Found specification of procedure strcpy [2021-10-28 08:59:53,024 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2021-10-28 08:59:53,024 INFO L130 BoogieDeclarations]: Found specification of procedure strcat [2021-10-28 08:59:53,025 INFO L130 BoogieDeclarations]: Found specification of procedure strncat [2021-10-28 08:59:53,025 INFO L130 BoogieDeclarations]: Found specification of procedure strcmp [2021-10-28 08:59:53,025 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2021-10-28 08:59:53,025 INFO L130 BoogieDeclarations]: Found specification of procedure strcoll [2021-10-28 08:59:53,025 INFO L130 BoogieDeclarations]: Found specification of procedure strxfrm [2021-10-28 08:59:53,025 INFO L130 BoogieDeclarations]: Found specification of procedure strcoll_l [2021-10-28 08:59:53,026 INFO L130 BoogieDeclarations]: Found specification of procedure strxfrm_l [2021-10-28 08:59:53,026 INFO L130 BoogieDeclarations]: Found specification of procedure strdup [2021-10-28 08:59:53,026 INFO L130 BoogieDeclarations]: Found specification of procedure strndup [2021-10-28 08:59:53,026 INFO L130 BoogieDeclarations]: Found specification of procedure strchr [2021-10-28 08:59:53,026 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2021-10-28 08:59:53,026 INFO L130 BoogieDeclarations]: Found specification of procedure strcspn [2021-10-28 08:59:53,027 INFO L130 BoogieDeclarations]: Found specification of procedure strspn [2021-10-28 08:59:53,027 INFO L130 BoogieDeclarations]: Found specification of procedure strpbrk [2021-10-28 08:59:53,027 INFO L130 BoogieDeclarations]: Found specification of procedure strstr [2021-10-28 08:59:53,027 INFO L130 BoogieDeclarations]: Found specification of procedure strtok [2021-10-28 08:59:53,027 INFO L130 BoogieDeclarations]: Found specification of procedure __strtok_r [2021-10-28 08:59:53,027 INFO L130 BoogieDeclarations]: Found specification of procedure strtok_r [2021-10-28 08:59:53,028 INFO L130 BoogieDeclarations]: Found specification of procedure strlen [2021-10-28 08:59:53,028 INFO L130 BoogieDeclarations]: Found specification of procedure strnlen [2021-10-28 08:59:53,028 INFO L130 BoogieDeclarations]: Found specification of procedure strerror [2021-10-28 08:59:53,028 INFO L130 BoogieDeclarations]: Found specification of procedure strerror_r [2021-10-28 08:59:53,028 INFO L130 BoogieDeclarations]: Found specification of procedure strerror_l [2021-10-28 08:59:53,028 INFO L130 BoogieDeclarations]: Found specification of procedure __bzero [2021-10-28 08:59:53,029 INFO L130 BoogieDeclarations]: Found specification of procedure bcopy [2021-10-28 08:59:53,029 INFO L130 BoogieDeclarations]: Found specification of procedure bzero [2021-10-28 08:59:53,029 INFO L130 BoogieDeclarations]: Found specification of procedure bcmp [2021-10-28 08:59:53,029 INFO L130 BoogieDeclarations]: Found specification of procedure index [2021-10-28 08:59:53,029 INFO L130 BoogieDeclarations]: Found specification of procedure rindex [2021-10-28 08:59:53,029 INFO L130 BoogieDeclarations]: Found specification of procedure ffs [2021-10-28 08:59:53,029 INFO L130 BoogieDeclarations]: Found specification of procedure strcasecmp [2021-10-28 08:59:53,030 INFO L130 BoogieDeclarations]: Found specification of procedure strncasecmp [2021-10-28 08:59:53,030 INFO L130 BoogieDeclarations]: Found specification of procedure strsep [2021-10-28 08:59:53,030 INFO L130 BoogieDeclarations]: Found specification of procedure strsignal [2021-10-28 08:59:53,030 INFO L130 BoogieDeclarations]: Found specification of procedure __stpcpy [2021-10-28 08:59:53,030 INFO L130 BoogieDeclarations]: Found specification of procedure stpcpy [2021-10-28 08:59:53,030 INFO L130 BoogieDeclarations]: Found specification of procedure __stpncpy [2021-10-28 08:59:53,031 INFO L130 BoogieDeclarations]: Found specification of procedure stpncpy [2021-10-28 08:59:53,031 INFO L130 BoogieDeclarations]: Found specification of procedure c1 [2021-10-28 08:59:53,031 INFO L130 BoogieDeclarations]: Found specification of procedure c2 [2021-10-28 08:59:53,031 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 08:59:53,031 INFO L130 BoogieDeclarations]: Found specification of procedure parse_input [2021-10-28 08:59:53,031 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~~TO~VOID [2021-10-28 08:59:53,031 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-28 08:59:53,032 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-28 08:59:53,032 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-28 08:59:53,032 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-28 08:59:53,032 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-10-28 08:59:53,032 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-10-28 08:59:53,032 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-28 08:59:53,032 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-10-28 08:59:53,033 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 08:59:53,033 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-28 08:59:53,033 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-28 08:59:53,693 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 08:59:53,696 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-10-28 08:59:53,698 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 08:59:53 BoogieIcfgContainer [2021-10-28 08:59:53,698 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 08:59:53,701 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 08:59:53,701 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 08:59:53,721 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 08:59:53,722 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 08:59:52" (1/3) ... [2021-10-28 08:59:53,723 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a92a9ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 08:59:53, skipping insertion in model container [2021-10-28 08:59:53,723 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:59:52" (2/3) ... [2021-10-28 08:59:53,724 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a92a9ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 08:59:53, skipping insertion in model container [2021-10-28 08:59:53,724 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 08:59:53" (3/3) ... [2021-10-28 08:59:53,726 INFO L111 eAbstractionObserver]: Analyzing ICFG bftpd_1.i [2021-10-28 08:59:53,736 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 08:59:53,737 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 23 error locations. [2021-10-28 08:59:53,805 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 08:59:53,811 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 08:59:53,811 INFO L340 AbstractCegarLoop]: Starting to check reachability of 23 error locations. [2021-10-28 08:59:53,830 INFO L276 IsEmpty]: Start isEmpty. Operand has 79 states, 41 states have (on average 1.7560975609756098) internal successors, (72), 65 states have internal predecessors, (72), 8 states have call successors, (8), 6 states have call predecessors, (8), 6 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) [2021-10-28 08:59:53,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-28 08:59:53,837 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:59:53,837 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:59:53,838 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting parse_inputErr0REQUIRES_VIOLATION === [c1Err0ASSERT_VIOLATIONMEMORY_FREE, c1Err1ASSERT_VIOLATIONMEMORY_FREE, c1Err2ASSERT_VIOLATIONMEMORY_FREE, c2Err0ASSERT_VIOLATIONMEMORY_FREE (and 19 more)] === [2021-10-28 08:59:53,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:59:53,843 INFO L85 PathProgramCache]: Analyzing trace with hash -1891287210, now seen corresponding path program 1 times [2021-10-28 08:59:53,853 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:59:53,853 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614430991] [2021-10-28 08:59:53,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:59:53,854 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:59:54,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:59:54,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 08:59:54,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:59:54,401 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 08:59:54,402 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:59:54,404 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614430991] [2021-10-28 08:59:54,405 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [614430991] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:59:54,405 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:59:54,406 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-28 08:59:54,407 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544820785] [2021-10-28 08:59:54,412 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 08:59:54,412 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:59:54,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 08:59:54,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 08:59:54,434 INFO L87 Difference]: Start difference. First operand has 79 states, 41 states have (on average 1.7560975609756098) internal successors, (72), 65 states have internal predecessors, (72), 8 states have call successors, (8), 6 states have call predecessors, (8), 6 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 4 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 08:59:54,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:59:54,906 INFO L93 Difference]: Finished difference Result 106 states and 131 transitions. [2021-10-28 08:59:54,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 08:59:54,908 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 9 [2021-10-28 08:59:54,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:59:54,920 INFO L225 Difference]: With dead ends: 106 [2021-10-28 08:59:54,920 INFO L226 Difference]: Without dead ends: 97 [2021-10-28 08:59:54,921 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-28 08:59:54,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2021-10-28 08:59:54,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 93. [2021-10-28 08:59:54,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 50 states have (on average 1.58) internal successors, (79), 73 states have internal predecessors, (79), 12 states have call successors, (12), 7 states have call predecessors, (12), 10 states have return successors, (28), 12 states have call predecessors, (28), 11 states have call successors, (28) [2021-10-28 08:59:55,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 119 transitions. [2021-10-28 08:59:55,007 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 119 transitions. Word has length 9 [2021-10-28 08:59:55,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:59:55,007 INFO L470 AbstractCegarLoop]: Abstraction has 93 states and 119 transitions. [2021-10-28 08:59:55,008 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 08:59:55,008 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 119 transitions. [2021-10-28 08:59:55,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-28 08:59:55,011 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:59:55,011 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:59:55,012 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-28 08:59:55,013 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting parse_inputErr1REQUIRES_VIOLATION === [c1Err0ASSERT_VIOLATIONMEMORY_FREE, c1Err1ASSERT_VIOLATIONMEMORY_FREE, c1Err2ASSERT_VIOLATIONMEMORY_FREE, c2Err0ASSERT_VIOLATIONMEMORY_FREE (and 19 more)] === [2021-10-28 08:59:55,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:59:55,014 INFO L85 PathProgramCache]: Analyzing trace with hash -1891287209, now seen corresponding path program 1 times [2021-10-28 08:59:55,014 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:59:55,014 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141892326] [2021-10-28 08:59:55,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:59:55,015 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:59:55,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:59:55,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 08:59:55,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:59:55,339 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 08:59:55,339 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:59:55,339 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141892326] [2021-10-28 08:59:55,340 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [141892326] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:59:55,340 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:59:55,340 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 08:59:55,343 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048269629] [2021-10-28 08:59:55,345 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 08:59:55,345 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:59:55,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 08:59:55,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-28 08:59:55,348 INFO L87 Difference]: Start difference. First operand 93 states and 119 transitions. Second operand has 5 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 08:59:56,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:59:56,053 INFO L93 Difference]: Finished difference Result 175 states and 232 transitions. [2021-10-28 08:59:56,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-28 08:59:56,059 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 9 [2021-10-28 08:59:56,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:59:56,066 INFO L225 Difference]: With dead ends: 175 [2021-10-28 08:59:56,067 INFO L226 Difference]: Without dead ends: 175 [2021-10-28 08:59:56,068 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-10-28 08:59:56,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2021-10-28 08:59:56,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 144. [2021-10-28 08:59:56,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 92 states have (on average 1.6195652173913044) internal successors, (149), 115 states have internal predecessors, (149), 17 states have call successors, (17), 11 states have call predecessors, (17), 14 states have return successors, (47), 17 states have call predecessors, (47), 16 states have call successors, (47) [2021-10-28 08:59:56,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 213 transitions. [2021-10-28 08:59:56,111 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 213 transitions. Word has length 9 [2021-10-28 08:59:56,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:59:56,112 INFO L470 AbstractCegarLoop]: Abstraction has 144 states and 213 transitions. [2021-10-28 08:59:56,112 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 08:59:56,112 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 213 transitions. [2021-10-28 08:59:56,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-28 08:59:56,113 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:59:56,113 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:59:56,114 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-28 08:59:56,114 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE === [c1Err0ASSERT_VIOLATIONMEMORY_FREE, c1Err1ASSERT_VIOLATIONMEMORY_FREE, c1Err2ASSERT_VIOLATIONMEMORY_FREE, c2Err0ASSERT_VIOLATIONMEMORY_FREE (and 19 more)] === [2021-10-28 08:59:56,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:59:56,115 INFO L85 PathProgramCache]: Analyzing trace with hash 1499638660, now seen corresponding path program 1 times [2021-10-28 08:59:56,115 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:59:56,115 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843091887] [2021-10-28 08:59:56,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:59:56,116 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:59:56,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:59:56,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 08:59:56,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:59:56,537 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 08:59:56,538 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:59:56,538 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843091887] [2021-10-28 08:59:56,539 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [843091887] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:59:56,540 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:59:56,540 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 08:59:56,540 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690214582] [2021-10-28 08:59:56,541 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 08:59:56,541 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:59:56,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 08:59:56,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-28 08:59:56,543 INFO L87 Difference]: Start difference. First operand 144 states and 213 transitions. Second operand has 6 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 08:59:57,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:59:57,382 INFO L93 Difference]: Finished difference Result 262 states and 378 transitions. [2021-10-28 08:59:57,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-28 08:59:57,383 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 2 states have call successors, (3), 2 states have call predecessors, (3), 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 08:59:57,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:59:57,388 INFO L225 Difference]: With dead ends: 262 [2021-10-28 08:59:57,388 INFO L226 Difference]: Without dead ends: 262 [2021-10-28 08:59:57,389 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2021-10-28 08:59:57,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2021-10-28 08:59:57,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 202. [2021-10-28 08:59:57,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 141 states have (on average 1.6170212765957446) internal successors, (228), 165 states have internal predecessors, (228), 21 states have call successors, (21), 16 states have call predecessors, (21), 19 states have return successors, (57), 20 states have call predecessors, (57), 20 states have call successors, (57) [2021-10-28 08:59:57,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 306 transitions. [2021-10-28 08:59:57,431 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 306 transitions. Word has length 10 [2021-10-28 08:59:57,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:59:57,431 INFO L470 AbstractCegarLoop]: Abstraction has 202 states and 306 transitions. [2021-10-28 08:59:57,431 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 08:59:57,432 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 306 transitions. [2021-10-28 08:59:57,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-28 08:59:57,432 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:59:57,432 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:59:57,432 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-28 08:59:57,433 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting parse_inputErr3ASSERT_VIOLATIONMEMORY_DEREFERENCE === [c1Err0ASSERT_VIOLATIONMEMORY_FREE, c1Err1ASSERT_VIOLATIONMEMORY_FREE, c1Err2ASSERT_VIOLATIONMEMORY_FREE, c2Err0ASSERT_VIOLATIONMEMORY_FREE (and 19 more)] === [2021-10-28 08:59:57,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:59:57,433 INFO L85 PathProgramCache]: Analyzing trace with hash -755841706, now seen corresponding path program 1 times [2021-10-28 08:59:57,433 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:59:57,434 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701110683] [2021-10-28 08:59:57,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:59:57,434 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:59:57,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:59:57,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 08:59:57,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:59:57,800 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 08:59:57,801 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:59:57,801 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701110683] [2021-10-28 08:59:57,801 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1701110683] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:59:57,802 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:59:57,802 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-28 08:59:57,806 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685832694] [2021-10-28 08:59:57,807 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 08:59:57,807 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:59:57,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 08:59:57,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-10-28 08:59:57,809 INFO L87 Difference]: Start difference. First operand 202 states and 306 transitions. Second operand has 7 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 08:59:58,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:59:58,704 INFO L93 Difference]: Finished difference Result 236 states and 332 transitions. [2021-10-28 08:59:58,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 08:59:58,705 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 2 states have call successors, (3), 2 states have call predecessors, (3), 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 08:59:58,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:59:58,707 INFO L225 Difference]: With dead ends: 236 [2021-10-28 08:59:58,708 INFO L226 Difference]: Without dead ends: 236 [2021-10-28 08:59:58,708 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2021-10-28 08:59:58,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2021-10-28 08:59:58,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 202. [2021-10-28 08:59:58,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 141 states have (on average 1.6028368794326242) internal successors, (226), 165 states have internal predecessors, (226), 21 states have call successors, (21), 16 states have call predecessors, (21), 19 states have return successors, (57), 20 states have call predecessors, (57), 20 states have call successors, (57) [2021-10-28 08:59:58,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 304 transitions. [2021-10-28 08:59:58,726 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 304 transitions. Word has length 11 [2021-10-28 08:59:58,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:59:58,726 INFO L470 AbstractCegarLoop]: Abstraction has 202 states and 304 transitions. [2021-10-28 08:59:58,726 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 08:59:58,726 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 304 transitions. [2021-10-28 08:59:58,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-28 08:59:58,727 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:59:58,727 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:59:58,727 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-28 08:59:58,728 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting parse_inputErr4ASSERT_VIOLATIONMEMORY_DEREFERENCE === [c1Err0ASSERT_VIOLATIONMEMORY_FREE, c1Err1ASSERT_VIOLATIONMEMORY_FREE, c1Err2ASSERT_VIOLATIONMEMORY_FREE, c2Err0ASSERT_VIOLATIONMEMORY_FREE (and 19 more)] === [2021-10-28 08:59:58,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:59:58,728 INFO L85 PathProgramCache]: Analyzing trace with hash -1956256314, now seen corresponding path program 1 times [2021-10-28 08:59:58,728 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:59:58,729 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348845064] [2021-10-28 08:59:58,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:59:58,729 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:59:58,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:59:58,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 08:59:58,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:59:58,890 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 08:59:58,890 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:59:58,890 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348845064] [2021-10-28 08:59:58,891 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1348845064] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:59:58,894 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:59:58,894 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-28 08:59:58,894 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660295509] [2021-10-28 08:59:58,895 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 08:59:58,895 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:59:58,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 08:59:58,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-10-28 08:59:58,896 INFO L87 Difference]: Start difference. First operand 202 states and 304 transitions. Second operand has 7 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 08:59:59,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:59:59,635 INFO L93 Difference]: Finished difference Result 287 states and 397 transitions. [2021-10-28 08:59:59,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-28 08:59:59,636 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2021-10-28 08:59:59,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:59:59,638 INFO L225 Difference]: With dead ends: 287 [2021-10-28 08:59:59,639 INFO L226 Difference]: Without dead ends: 287 [2021-10-28 08:59:59,639 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2021-10-28 08:59:59,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2021-10-28 08:59:59,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 233. [2021-10-28 08:59:59,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 170 states have (on average 1.5823529411764705) internal successors, (269), 195 states have internal predecessors, (269), 21 states have call successors, (21), 17 states have call predecessors, (21), 21 states have return successors, (58), 20 states have call predecessors, (58), 20 states have call successors, (58) [2021-10-28 08:59:59,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 348 transitions. [2021-10-28 08:59:59,653 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 348 transitions. Word has length 12 [2021-10-28 08:59:59,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:59:59,653 INFO L470 AbstractCegarLoop]: Abstraction has 233 states and 348 transitions. [2021-10-28 08:59:59,654 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 08:59:59,654 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 348 transitions. [2021-10-28 08:59:59,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-28 08:59:59,654 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:59:59,655 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:59:59,655 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-28 08:59:59,655 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting parse_inputErr5ASSERT_VIOLATIONMEMORY_DEREFERENCE === [c1Err0ASSERT_VIOLATIONMEMORY_FREE, c1Err1ASSERT_VIOLATIONMEMORY_FREE, c1Err2ASSERT_VIOLATIONMEMORY_FREE, c2Err0ASSERT_VIOLATIONMEMORY_FREE (and 19 more)] === [2021-10-28 08:59:59,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:59:59,656 INFO L85 PathProgramCache]: Analyzing trace with hash -514403496, now seen corresponding path program 1 times [2021-10-28 08:59:59,656 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:59:59,656 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241834703] [2021-10-28 08:59:59,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:59:59,656 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:59:59,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:59:59,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 08:59:59,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:59:59,837 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 08:59:59,837 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:59:59,837 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241834703] [2021-10-28 08:59:59,838 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [241834703] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:59:59,838 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:59:59,838 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-28 08:59:59,838 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056483789] [2021-10-28 08:59:59,839 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 08:59:59,839 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:59:59,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 08:59:59,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-10-28 08:59:59,840 INFO L87 Difference]: Start difference. First operand 233 states and 348 transitions. Second operand has 7 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:00:00,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:00:00,574 INFO L93 Difference]: Finished difference Result 265 states and 363 transitions. [2021-10-28 09:00:00,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-28 09:00:00,574 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2021-10-28 09:00:00,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:00:00,576 INFO L225 Difference]: With dead ends: 265 [2021-10-28 09:00:00,576 INFO L226 Difference]: Without dead ends: 265 [2021-10-28 09:00:00,576 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-10-28 09:00:00,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2021-10-28 09:00:00,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 233. [2021-10-28 09:00:00,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 170 states have (on average 1.5705882352941176) internal successors, (267), 195 states have internal predecessors, (267), 21 states have call successors, (21), 17 states have call predecessors, (21), 21 states have return successors, (58), 20 states have call predecessors, (58), 20 states have call successors, (58) [2021-10-28 09:00:00,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 346 transitions. [2021-10-28 09:00:00,590 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 346 transitions. Word has length 13 [2021-10-28 09:00:00,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:00:00,591 INFO L470 AbstractCegarLoop]: Abstraction has 233 states and 346 transitions. [2021-10-28 09:00:00,591 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:00:00,591 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 346 transitions. [2021-10-28 09:00:00,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-28 09:00:00,592 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:00:00,592 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:00:00,593 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-28 09:00:00,593 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting parse_inputErr1REQUIRES_VIOLATION === [c1Err0ASSERT_VIOLATIONMEMORY_FREE, c1Err1ASSERT_VIOLATIONMEMORY_FREE, c1Err2ASSERT_VIOLATIONMEMORY_FREE, c2Err0ASSERT_VIOLATIONMEMORY_FREE (and 19 more)] === [2021-10-28 09:00:00,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:00:00,593 INFO L85 PathProgramCache]: Analyzing trace with hash -389968098, now seen corresponding path program 1 times [2021-10-28 09:00:00,594 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:00:00,594 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456601661] [2021-10-28 09:00:00,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:00:00,594 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:00:00,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:00:00,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:00:00,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:00:00,742 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:00:00,742 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:00:00,742 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1456601661] [2021-10-28 09:00:00,743 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1456601661] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:00:00,743 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1399072375] [2021-10-28 09:00:00,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:00:00,743 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:00:00,743 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cd72010-c09b-4bd3-84e9-04440f91be35/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:00:00,749 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cd72010-c09b-4bd3-84e9-04440f91be35/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:00:00,776 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cd72010-c09b-4bd3-84e9-04440f91be35/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-28 09:00:00,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:00:00,922 INFO L263 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-28 09:00:00,927 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:00:01,141 INFO L354 Elim1Store]: treesize reduction 240, result has 16.1 percent of original size [2021-10-28 09:00:01,142 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 21 treesize of output 51 [2021-10-28 09:00:01,396 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:00:01,396 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1399072375] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:00:01,396 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:00:01,397 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 7 [2021-10-28 09:00:01,397 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513701222] [2021-10-28 09:00:01,397 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-28 09:00:01,397 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:00:01,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-28 09:00:01,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-10-28 09:00:01,399 INFO L87 Difference]: Start difference. First operand 233 states and 346 transitions. Second operand has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 6 states have internal predecessors, (17), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:00:02,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:00:02,216 INFO L93 Difference]: Finished difference Result 267 states and 370 transitions. [2021-10-28 09:00:02,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-28 09:00:02,217 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 6 states have internal predecessors, (17), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2021-10-28 09:00:02,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:00:02,219 INFO L225 Difference]: With dead ends: 267 [2021-10-28 09:00:02,220 INFO L226 Difference]: Without dead ends: 267 [2021-10-28 09:00:02,220 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2021-10-28 09:00:02,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2021-10-28 09:00:02,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 237. [2021-10-28 09:00:02,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 237 states, 174 states have (on average 1.5114942528735633) internal successors, (263), 199 states have internal predecessors, (263), 21 states have call successors, (21), 17 states have call predecessors, (21), 21 states have return successors, (58), 20 states have call predecessors, (58), 20 states have call successors, (58) [2021-10-28 09:00:02,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 342 transitions. [2021-10-28 09:00:02,248 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 342 transitions. Word has length 17 [2021-10-28 09:00:02,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:00:02,248 INFO L470 AbstractCegarLoop]: Abstraction has 237 states and 342 transitions. [2021-10-28 09:00:02,249 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 6 states have internal predecessors, (17), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:00:02,249 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 342 transitions. [2021-10-28 09:00:02,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-28 09:00:02,250 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:00:02,250 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:00:02,309 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cd72010-c09b-4bd3-84e9-04440f91be35/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-28 09:00:02,450 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cd72010-c09b-4bd3-84e9-04440f91be35/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:00:02,451 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE === [c1Err0ASSERT_VIOLATIONMEMORY_FREE, c1Err1ASSERT_VIOLATIONMEMORY_FREE, c1Err2ASSERT_VIOLATIONMEMORY_FREE, c2Err0ASSERT_VIOLATIONMEMORY_FREE (and 19 more)] === [2021-10-28 09:00:02,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:00:02,451 INFO L85 PathProgramCache]: Analyzing trace with hash 795890845, now seen corresponding path program 1 times [2021-10-28 09:00:02,451 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:00:02,452 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273140778] [2021-10-28 09:00:02,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:00:02,452 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:00:02,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:00:02,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:00:02,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:00:02,784 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:00:02,785 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:00:02,785 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273140778] [2021-10-28 09:00:02,785 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1273140778] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:00:02,785 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [615257878] [2021-10-28 09:00:02,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:00:02,786 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:00:02,786 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cd72010-c09b-4bd3-84e9-04440f91be35/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:00:02,797 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cd72010-c09b-4bd3-84e9-04440f91be35/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:00:02,820 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cd72010-c09b-4bd3-84e9-04440f91be35/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-28 09:00:02,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:00:02,993 INFO L263 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-28 09:00:02,995 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:00:03,183 INFO L354 Elim1Store]: treesize reduction 497, result has 11.1 percent of original size [2021-10-28 09:00:03,183 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 7 case distinctions, treesize of input 74 treesize of output 108 [2021-10-28 09:00:12,941 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 90 treesize of output 66 [2021-10-28 09:00:13,620 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:00:13,621 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [615257878] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:00:13,621 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:00:13,621 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5] total 14 [2021-10-28 09:00:13,622 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999103361] [2021-10-28 09:00:13,622 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-28 09:00:13,623 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:00:13,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-28 09:00:13,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2021-10-28 09:00:13,626 INFO L87 Difference]: Start difference. First operand 237 states and 342 transitions. Second operand has 15 states, 14 states have (on average 2.0) internal successors, (28), 12 states have internal predecessors, (28), 3 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-10-28 09:00:16,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:00:16,285 INFO L93 Difference]: Finished difference Result 294 states and 408 transitions. [2021-10-28 09:00:16,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-28 09:00:16,286 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.0) internal successors, (28), 12 states have internal predecessors, (28), 3 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 18 [2021-10-28 09:00:16,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:00:16,289 INFO L225 Difference]: With dead ends: 294 [2021-10-28 09:00:16,289 INFO L226 Difference]: Without dead ends: 294 [2021-10-28 09:00:16,290 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=126, Invalid=380, Unknown=0, NotChecked=0, Total=506 [2021-10-28 09:00:16,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2021-10-28 09:00:16,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 243. [2021-10-28 09:00:16,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 180 states have (on average 1.5) internal successors, (270), 205 states have internal predecessors, (270), 21 states have call successors, (21), 17 states have call predecessors, (21), 21 states have return successors, (58), 20 states have call predecessors, (58), 20 states have call successors, (58) [2021-10-28 09:00:16,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 349 transitions. [2021-10-28 09:00:16,307 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 349 transitions. Word has length 18 [2021-10-28 09:00:16,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:00:16,307 INFO L470 AbstractCegarLoop]: Abstraction has 243 states and 349 transitions. [2021-10-28 09:00:16,308 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.0) internal successors, (28), 12 states have internal predecessors, (28), 3 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-10-28 09:00:16,308 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 349 transitions. [2021-10-28 09:00:16,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-28 09:00:16,309 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:00:16,309 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:00:16,342 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cd72010-c09b-4bd3-84e9-04440f91be35/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-10-28 09:00:16,525 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cd72010-c09b-4bd3-84e9-04440f91be35/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2021-10-28 09:00:16,525 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting parse_inputErr3ASSERT_VIOLATIONMEMORY_DEREFERENCE === [c1Err0ASSERT_VIOLATIONMEMORY_FREE, c1Err1ASSERT_VIOLATIONMEMORY_FREE, c1Err2ASSERT_VIOLATIONMEMORY_FREE, c2Err0ASSERT_VIOLATIONMEMORY_FREE (and 19 more)] === [2021-10-28 09:00:16,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:00:16,526 INFO L85 PathProgramCache]: Analyzing trace with hash -1097187491, now seen corresponding path program 1 times [2021-10-28 09:00:16,526 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:00:16,526 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992826577] [2021-10-28 09:00:16,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:00:16,527 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:00:16,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:00:16,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:00:16,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:00:17,034 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:00:17,034 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:00:17,035 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992826577] [2021-10-28 09:00:17,035 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1992826577] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:00:17,035 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1152627741] [2021-10-28 09:00:17,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:00:17,035 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:00:17,035 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cd72010-c09b-4bd3-84e9-04440f91be35/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:00:17,040 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cd72010-c09b-4bd3-84e9-04440f91be35/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:00:17,069 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cd72010-c09b-4bd3-84e9-04440f91be35/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-28 09:00:17,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:00:17,354 INFO L263 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-28 09:00:17,356 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:00:17,512 INFO L354 Elim1Store]: treesize reduction 354, result has 14.1 percent of original size [2021-10-28 09:00:17,513 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 48 treesize of output 83 [2021-10-28 09:00:17,537 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 172 treesize of output 164 [2021-10-28 09:00:20,983 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 86 treesize of output 62 [2021-10-28 09:00:20,988 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 47 [2021-10-28 09:00:21,645 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:00:21,646 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1152627741] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:00:21,646 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:00:21,646 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5] total 12 [2021-10-28 09:00:21,646 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235545246] [2021-10-28 09:00:21,648 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-28 09:00:21,648 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:00:21,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-28 09:00:21,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2021-10-28 09:00:21,651 INFO L87 Difference]: Start difference. First operand 243 states and 349 transitions. Second operand has 13 states, 12 states have (on average 2.5) internal successors, (30), 10 states have internal predecessors, (30), 3 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-10-28 09:00:23,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:00:23,354 INFO L93 Difference]: Finished difference Result 272 states and 374 transitions. [2021-10-28 09:00:23,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-28 09:00:23,355 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.5) internal successors, (30), 10 states have internal predecessors, (30), 3 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 19 [2021-10-28 09:00:23,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:00:23,359 INFO L225 Difference]: With dead ends: 272 [2021-10-28 09:00:23,369 INFO L226 Difference]: Without dead ends: 272 [2021-10-28 09:00:23,369 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=94, Invalid=248, Unknown=0, NotChecked=0, Total=342 [2021-10-28 09:00:23,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2021-10-28 09:00:23,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 243. [2021-10-28 09:00:23,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 180 states have (on average 1.4833333333333334) internal successors, (267), 205 states have internal predecessors, (267), 21 states have call successors, (21), 17 states have call predecessors, (21), 21 states have return successors, (58), 20 states have call predecessors, (58), 20 states have call successors, (58) [2021-10-28 09:00:23,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 346 transitions. [2021-10-28 09:00:23,401 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 346 transitions. Word has length 19 [2021-10-28 09:00:23,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:00:23,401 INFO L470 AbstractCegarLoop]: Abstraction has 243 states and 346 transitions. [2021-10-28 09:00:23,402 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.5) internal successors, (30), 10 states have internal predecessors, (30), 3 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-10-28 09:00:23,402 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 346 transitions. [2021-10-28 09:00:23,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-28 09:00:23,403 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:00:23,403 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, 1, 1] [2021-10-28 09:00:23,449 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cd72010-c09b-4bd3-84e9-04440f91be35/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-28 09:00:23,604 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cd72010-c09b-4bd3-84e9-04440f91be35/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:00:23,604 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting c2Err0ASSERT_VIOLATIONMEMORY_FREE === [c1Err0ASSERT_VIOLATIONMEMORY_FREE, c1Err1ASSERT_VIOLATIONMEMORY_FREE, c1Err2ASSERT_VIOLATIONMEMORY_FREE, c2Err0ASSERT_VIOLATIONMEMORY_FREE (and 19 more)] === [2021-10-28 09:00:23,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:00:23,605 INFO L85 PathProgramCache]: Analyzing trace with hash -321978897, now seen corresponding path program 1 times [2021-10-28 09:00:23,605 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:00:23,605 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247478267] [2021-10-28 09:00:23,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:00:23,605 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:00:23,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:00:23,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:00:23,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:00:23,711 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 09:00:23,711 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:00:23,711 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247478267] [2021-10-28 09:00:23,711 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [247478267] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:00:23,712 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:00:23,712 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-28 09:00:23,712 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19311245] [2021-10-28 09:00:23,712 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 09:00:23,713 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:00:23,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 09:00:23,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 09:00:23,714 INFO L87 Difference]: Start difference. First operand 243 states and 346 transitions. Second operand has 4 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:00:24,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:00:24,097 INFO L93 Difference]: Finished difference Result 352 states and 523 transitions. [2021-10-28 09:00:24,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 09:00:24,098 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 23 [2021-10-28 09:00:24,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:00:24,101 INFO L225 Difference]: With dead ends: 352 [2021-10-28 09:00:24,102 INFO L226 Difference]: Without dead ends: 352 [2021-10-28 09:00:24,102 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-28 09:00:24,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states. [2021-10-28 09:00:24,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 338. [2021-10-28 09:00:24,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 338 states, 254 states have (on average 1.5) internal successors, (381), 282 states have internal predecessors, (381), 30 states have call successors, (30), 25 states have call predecessors, (30), 33 states have return successors, (110), 30 states have call predecessors, (110), 29 states have call successors, (110) [2021-10-28 09:00:24,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 521 transitions. [2021-10-28 09:00:24,127 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 521 transitions. Word has length 23 [2021-10-28 09:00:24,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:00:24,127 INFO L470 AbstractCegarLoop]: Abstraction has 338 states and 521 transitions. [2021-10-28 09:00:24,128 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:00:24,128 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 521 transitions. [2021-10-28 09:00:24,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-28 09:00:24,129 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:00:24,129 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, 1, 1] [2021-10-28 09:00:24,129 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-10-28 09:00:24,130 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting c2Err3ASSERT_VIOLATIONMEMORY_FREE === [c1Err0ASSERT_VIOLATIONMEMORY_FREE, c1Err1ASSERT_VIOLATIONMEMORY_FREE, c1Err2ASSERT_VIOLATIONMEMORY_FREE, c2Err0ASSERT_VIOLATIONMEMORY_FREE (and 19 more)] === [2021-10-28 09:00:24,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:00:24,130 INFO L85 PathProgramCache]: Analyzing trace with hash -321978673, now seen corresponding path program 1 times [2021-10-28 09:00:24,130 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:00:24,130 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797701966] [2021-10-28 09:00:24,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:00:24,131 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:00:24,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:00:24,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:00:24,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:00:24,242 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 09:00:24,242 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:00:24,243 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797701966] [2021-10-28 09:00:24,243 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1797701966] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:00:24,243 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:00:24,243 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 09:00:24,243 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197263931] [2021-10-28 09:00:24,244 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 09:00:24,244 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:00:24,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 09:00:24,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 09:00:24,245 INFO L87 Difference]: Start difference. First operand 338 states and 521 transitions. Second operand has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 2 states have internal predecessors, (17), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:00:24,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:00:24,601 INFO L93 Difference]: Finished difference Result 391 states and 559 transitions. [2021-10-28 09:00:24,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 09:00:24,602 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 2 states have internal predecessors, (17), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 23 [2021-10-28 09:00:24,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:00:24,605 INFO L225 Difference]: With dead ends: 391 [2021-10-28 09:00:24,605 INFO L226 Difference]: Without dead ends: 391 [2021-10-28 09:00:24,606 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-28 09:00:24,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391 states. [2021-10-28 09:00:24,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391 to 375. [2021-10-28 09:00:24,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 375 states, 282 states have (on average 1.4858156028368794) internal successors, (419), 311 states have internal predecessors, (419), 33 states have call successors, (33), 29 states have call predecessors, (33), 39 states have return successors, (101), 34 states have call predecessors, (101), 32 states have call successors, (101) [2021-10-28 09:00:24,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 553 transitions. [2021-10-28 09:00:24,627 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 553 transitions. Word has length 23 [2021-10-28 09:00:24,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:00:24,627 INFO L470 AbstractCegarLoop]: Abstraction has 375 states and 553 transitions. [2021-10-28 09:00:24,628 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 2 states have internal predecessors, (17), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:00:24,628 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 553 transitions. [2021-10-28 09:00:24,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-28 09:00:24,629 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:00:24,629 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, 1, 1, 1] [2021-10-28 09:00:24,630 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-10-28 09:00:24,630 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting c2Err1ASSERT_VIOLATIONMEMORY_FREE === [c1Err0ASSERT_VIOLATIONMEMORY_FREE, c1Err1ASSERT_VIOLATIONMEMORY_FREE, c1Err2ASSERT_VIOLATIONMEMORY_FREE, c2Err0ASSERT_VIOLATIONMEMORY_FREE (and 19 more)] === [2021-10-28 09:00:24,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:00:24,631 INFO L85 PathProgramCache]: Analyzing trace with hash -1391411157, now seen corresponding path program 1 times [2021-10-28 09:00:24,631 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:00:24,631 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115498042] [2021-10-28 09:00:24,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:00:24,632 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:00:24,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:00:24,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:00:24,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:00:24,750 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 09:00:24,750 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:00:24,751 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115498042] [2021-10-28 09:00:24,751 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [115498042] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:00:24,751 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:00:24,751 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-28 09:00:24,751 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329577055] [2021-10-28 09:00:24,752 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 09:00:24,752 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:00:24,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 09:00:24,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 09:00:24,753 INFO L87 Difference]: Start difference. First operand 375 states and 553 transitions. Second operand has 4 states, 2 states have (on average 9.0) internal successors, (18), 2 states have internal predecessors, (18), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:00:25,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:00:25,046 INFO L93 Difference]: Finished difference Result 390 states and 557 transitions. [2021-10-28 09:00:25,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 09:00:25,047 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 2 states have (on average 9.0) internal successors, (18), 2 states have internal predecessors, (18), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 24 [2021-10-28 09:00:25,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:00:25,050 INFO L225 Difference]: With dead ends: 390 [2021-10-28 09:00:25,050 INFO L226 Difference]: Without dead ends: 390 [2021-10-28 09:00:25,051 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-28 09:00:25,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 390 states. [2021-10-28 09:00:25,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 390 to 375. [2021-10-28 09:00:25,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 375 states, 282 states have (on average 1.4787234042553192) internal successors, (417), 311 states have internal predecessors, (417), 33 states have call successors, (33), 29 states have call predecessors, (33), 39 states have return successors, (101), 34 states have call predecessors, (101), 32 states have call successors, (101) [2021-10-28 09:00:25,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 551 transitions. [2021-10-28 09:00:25,068 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 551 transitions. Word has length 24 [2021-10-28 09:00:25,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:00:25,068 INFO L470 AbstractCegarLoop]: Abstraction has 375 states and 551 transitions. [2021-10-28 09:00:25,069 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 2 states have (on average 9.0) internal successors, (18), 2 states have internal predecessors, (18), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:00:25,069 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 551 transitions. [2021-10-28 09:00:25,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-10-28 09:00:25,070 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:00:25,070 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:00:25,071 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-10-28 09:00:25,071 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting parse_inputErr1REQUIRES_VIOLATION === [c1Err0ASSERT_VIOLATIONMEMORY_FREE, c1Err1ASSERT_VIOLATIONMEMORY_FREE, c1Err2ASSERT_VIOLATIONMEMORY_FREE, c2Err0ASSERT_VIOLATIONMEMORY_FREE (and 19 more)] === [2021-10-28 09:00:25,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:00:25,071 INFO L85 PathProgramCache]: Analyzing trace with hash -1350782223, now seen corresponding path program 1 times [2021-10-28 09:00:25,072 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:00:25,072 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845677050] [2021-10-28 09:00:25,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:00:25,072 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:00:25,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:00:25,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:00:25,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:00:25,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-10-28 09:00:25,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:00:25,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-10-28 09:00:25,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:00:25,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-10-28 09:00:25,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:00:25,170 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:00:25,170 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:00:25,170 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845677050] [2021-10-28 09:00:25,170 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1845677050] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:00:25,171 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:00:25,171 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-28 09:00:25,171 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386656768] [2021-10-28 09:00:25,171 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 09:00:25,171 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:00:25,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 09:00:25,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-28 09:00:25,173 INFO L87 Difference]: Start difference. First operand 375 states and 551 transitions. Second operand has 5 states, 5 states have (on average 4.6) internal successors, (23), 3 states have internal predecessors, (23), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2021-10-28 09:00:25,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:00:25,381 INFO L93 Difference]: Finished difference Result 284 states and 399 transitions. [2021-10-28 09:00:25,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 09:00:25,382 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 3 states have internal predecessors, (23), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 33 [2021-10-28 09:00:25,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:00:25,386 INFO L225 Difference]: With dead ends: 284 [2021-10-28 09:00:25,386 INFO L226 Difference]: Without dead ends: 284 [2021-10-28 09:00:25,387 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-28 09:00:25,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2021-10-28 09:00:25,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 284. [2021-10-28 09:00:25,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 284 states, 213 states have (on average 1.4507042253521127) internal successors, (309), 238 states have internal predecessors, (309), 26 states have call successors, (26), 23 states have call predecessors, (26), 24 states have return successors, (64), 22 states have call predecessors, (64), 25 states have call successors, (64) [2021-10-28 09:00:25,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 399 transitions. [2021-10-28 09:00:25,403 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 399 transitions. Word has length 33 [2021-10-28 09:00:25,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:00:25,403 INFO L470 AbstractCegarLoop]: Abstraction has 284 states and 399 transitions. [2021-10-28 09:00:25,403 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 3 states have internal predecessors, (23), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2021-10-28 09:00:25,404 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 399 transitions. [2021-10-28 09:00:25,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-10-28 09:00:25,410 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:00:25,410 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:00:25,411 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-10-28 09:00:25,411 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting parse_inputErr4ASSERT_VIOLATIONMEMORY_DEREFERENCE === [c1Err0ASSERT_VIOLATIONMEMORY_FREE, c1Err1ASSERT_VIOLATIONMEMORY_FREE, c1Err2ASSERT_VIOLATIONMEMORY_FREE, c2Err0ASSERT_VIOLATIONMEMORY_FREE (and 19 more)] === [2021-10-28 09:00:25,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:00:25,411 INFO L85 PathProgramCache]: Analyzing trace with hash 1784623764, now seen corresponding path program 1 times [2021-10-28 09:00:25,412 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:00:25,412 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402325563] [2021-10-28 09:00:25,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:00:25,412 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:00:25,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:00:25,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:00:25,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:00:25,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-10-28 09:00:25,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:00:25,611 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-10-28 09:00:25,612 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:00:25,614 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402325563] [2021-10-28 09:00:25,614 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [402325563] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:00:25,614 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [20739241] [2021-10-28 09:00:25,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:00:25,614 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:00:25,615 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cd72010-c09b-4bd3-84e9-04440f91be35/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:00:25,617 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cd72010-c09b-4bd3-84e9-04440f91be35/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:00:25,643 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cd72010-c09b-4bd3-84e9-04440f91be35/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-10-28 09:00:25,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:00:25,958 INFO L263 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-28 09:00:25,960 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:00:26,103 INFO L354 Elim1Store]: treesize reduction 365, result has 12.0 percent of original size [2021-10-28 09:00:26,103 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 6 case distinctions, treesize of input 24 treesize of output 55 [2021-10-28 09:00:27,685 INFO L354 Elim1Store]: treesize reduction 120, result has 29.0 percent of original size [2021-10-28 09:00:27,685 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 55 treesize of output 89 [2021-10-28 09:00:30,418 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-10-28 09:00:30,419 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [20739241] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:00:30,419 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:00:30,419 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5] total 11 [2021-10-28 09:00:30,419 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325958749] [2021-10-28 09:00:30,420 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-28 09:00:30,420 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:00:30,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-28 09:00:30,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-10-28 09:00:30,421 INFO L87 Difference]: Start difference. First operand 284 states and 399 transitions. Second operand has 12 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 7 states have internal predecessors, (28), 3 states have call successors, (8), 8 states have call predecessors, (8), 3 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2021-10-28 09:00:42,539 WARN L207 SmtUtils]: Spent 10.66 s on a formula simplification that was a NOOP. DAG size: 97 [2021-10-28 09:01:00,644 WARN L228 Executor]: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cd72010-c09b-4bd3-84e9-04440f91be35/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) stderr output: (error "out of memory") [2021-10-28 09:01:00,645 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cd72010-c09b-4bd3-84e9-04440f91be35/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 101 [2021-10-28 09:01:00,671 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cd72010-c09b-4bd3-84e9-04440f91be35/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-10-28 09:01:00,847 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cd72010-c09b-4bd3-84e9-04440f91be35/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-10-28 09:01:00,847 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cd72010-c09b-4bd3-84e9-04440f91be35/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.convertIOException(Executor.java:312) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:158) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.pop(Scriptor.java:139) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.DiffWrapperScript.pop(DiffWrapperScript.java:99) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.pop(WrapperScript.java:153) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.scripttransfer.HistoryRecordingScript.pop(HistoryRecordingScript.java:117) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.pop(ManagedScript.java:128) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.unAssertPostcondition(IncrementalHoareTripleChecker.java:662) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.clearAssertionStack(IncrementalHoareTripleChecker.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.releaseLock(IncrementalHoareTripleChecker.java:281) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ProtectiveHoareTripleChecker.releaseLock(ProtectiveHoareTripleChecker.java:93) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.EfficientHoareTripleChecker.releaseLock(EfficientHoareTripleChecker.java:162) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.CachingHoareTripleChecker.releaseLock(CachingHoareTripleChecker.java:201) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.switchToReadonlyMode(AbstractInterpolantAutomaton.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.computeAutomataDifference(BasicCegarLoop.java:886) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.refineAbstraction(BasicCegarLoop.java:783) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.refineAbstractionInternal(AbstractCegarLoop.java:462) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:420) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: java.io.IOException: Stream closed at java.base/java.lang.ProcessBuilder$NullOutputStream.write(ProcessBuilder.java:442) at java.base/java.io.OutputStream.write(OutputStream.java:157) at java.base/java.io.BufferedOutputStream.flushBuffer(BufferedOutputStream.java:81) at java.base/java.io.BufferedOutputStream.flush(BufferedOutputStream.java:142) at java.base/sun.nio.cs.StreamEncoder.implFlush(StreamEncoder.java:318) at java.base/sun.nio.cs.StreamEncoder.flush(StreamEncoder.java:153) at java.base/java.io.OutputStreamWriter.flush(OutputStreamWriter.java:251) at java.base/java.io.BufferedWriter.flush(BufferedWriter.java:257) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:156) ... 35 more [2021-10-28 09:01:00,850 INFO L168 Benchmark]: Toolchain (without parser) took 68729.24 ms. Allocated memory was 109.1 MB in the beginning and 237.0 MB in the end (delta: 127.9 MB). Free memory was 65.1 MB in the beginning and 160.4 MB in the end (delta: -95.2 MB). Peak memory consumption was 30.8 MB. Max. memory is 16.1 GB. [2021-10-28 09:01:00,851 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 109.1 MB. Free memory was 82.7 MB in the beginning and 82.7 MB in the end (delta: 53.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 09:01:00,851 INFO L168 Benchmark]: CACSL2BoogieTranslator took 692.45 ms. Allocated memory is still 109.1 MB. Free memory was 64.9 MB in the beginning and 71.5 MB in the end (delta: -6.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-28 09:01:00,851 INFO L168 Benchmark]: Boogie Preprocessor took 106.58 ms. Allocated memory is still 109.1 MB. Free memory was 71.5 MB in the beginning and 68.4 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-28 09:01:00,852 INFO L168 Benchmark]: RCFGBuilder took 773.62 ms. Allocated memory is still 109.1 MB. Free memory was 68.2 MB in the beginning and 42.3 MB in the end (delta: 25.9 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.1 GB. [2021-10-28 09:01:00,852 INFO L168 Benchmark]: TraceAbstraction took 67148.74 ms. Allocated memory was 109.1 MB in the beginning and 237.0 MB in the end (delta: 127.9 MB). Free memory was 42.0 MB in the beginning and 160.4 MB in the end (delta: -118.3 MB). Peak memory consumption was 11.6 MB. Max. memory is 16.1 GB. [2021-10-28 09:01:00,855 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 109.1 MB. Free memory was 82.7 MB in the beginning and 82.7 MB in the end (delta: 53.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 692.45 ms. Allocated memory is still 109.1 MB. Free memory was 64.9 MB in the beginning and 71.5 MB in the end (delta: -6.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 106.58 ms. Allocated memory is still 109.1 MB. Free memory was 71.5 MB in the beginning and 68.4 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 773.62 ms. Allocated memory is still 109.1 MB. Free memory was 68.2 MB in the beginning and 42.3 MB in the end (delta: 25.9 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 67148.74 ms. Allocated memory was 109.1 MB in the beginning and 237.0 MB in the end (delta: 127.9 MB). Free memory was 42.0 MB in the beginning and 160.4 MB in the end (delta: -118.3 MB). Peak memory consumption was 11.6 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cd72010-c09b-4bd3-84e9-04440f91be35/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cd72010-c09b-4bd3-84e9-04440f91be35/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken: de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.convertIOException(Executor.java:312) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 09:01:03,072 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 09:01:03,074 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 09:01:03,106 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 09:01:03,107 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 09:01:03,109 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 09:01:03,111 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 09:01:03,114 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 09:01:03,117 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 09:01:03,118 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 09:01:03,120 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 09:01:03,121 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 09:01:03,122 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 09:01:03,124 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 09:01:03,126 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 09:01:03,127 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 09:01:03,129 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 09:01:03,130 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 09:01:03,142 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 09:01:03,147 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 09:01:03,152 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 09:01:03,154 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 09:01:03,156 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 09:01:03,159 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 09:01:03,166 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 09:01:03,171 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 09:01:03,172 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 09:01:03,173 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 09:01:03,175 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 09:01:03,176 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 09:01:03,177 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 09:01:03,178 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 09:01:03,180 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 09:01:03,181 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 09:01:03,186 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 09:01:03,186 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 09:01:03,187 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 09:01:03,188 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 09:01:03,188 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 09:01:03,190 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 09:01:03,191 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 09:01:03,192 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cd72010-c09b-4bd3-84e9-04440f91be35/bin/uautomizer-UnR33cPsHg/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-10-28 09:01:03,246 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 09:01:03,247 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 09:01:03,248 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 09:01:03,248 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 09:01:03,250 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 09:01:03,251 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 09:01:03,251 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 09:01:03,251 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 09:01:03,252 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 09:01:03,252 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-28 09:01:03,253 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 09:01:03,253 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 09:01:03,253 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 09:01:03,254 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-28 09:01:03,254 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-28 09:01:03,254 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-28 09:01:03,254 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 09:01:03,255 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-28 09:01:03,255 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-28 09:01:03,255 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-28 09:01:03,255 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 09:01:03,256 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 09:01:03,256 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 09:01:03,256 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 09:01:03,256 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 09:01:03,257 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 09:01:03,257 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 09:01:03,257 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 09:01:03,258 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-28 09:01:03,258 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-28 09:01:03,258 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 09:01:03,258 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-28 09:01:03,259 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cd72010-c09b-4bd3-84e9-04440f91be35/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cd72010-c09b-4bd3-84e9-04440f91be35/bin/uautomizer-UnR33cPsHg Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 10f5db0b7f76a0d4c4c35217e21dd4a594e7457adb3230ac21a302fd5d7ee15c [2021-10-28 09:01:03,634 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 09:01:03,656 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 09:01:03,659 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 09:01:03,660 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 09:01:03,661 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 09:01:03,662 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cd72010-c09b-4bd3-84e9-04440f91be35/bin/uautomizer-UnR33cPsHg/../../sv-benchmarks/c/memsafety-bftpd/bftpd_1.i [2021-10-28 09:01:03,746 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cd72010-c09b-4bd3-84e9-04440f91be35/bin/uautomizer-UnR33cPsHg/data/1d2434999/27ac937aeb094278853a61643bab4918/FLAG6adc22d69 [2021-10-28 09:01:04,480 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 09:01:04,482 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cd72010-c09b-4bd3-84e9-04440f91be35/sv-benchmarks/c/memsafety-bftpd/bftpd_1.i [2021-10-28 09:01:04,505 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cd72010-c09b-4bd3-84e9-04440f91be35/bin/uautomizer-UnR33cPsHg/data/1d2434999/27ac937aeb094278853a61643bab4918/FLAG6adc22d69 [2021-10-28 09:01:04,711 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cd72010-c09b-4bd3-84e9-04440f91be35/bin/uautomizer-UnR33cPsHg/data/1d2434999/27ac937aeb094278853a61643bab4918 [2021-10-28 09:01:04,714 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 09:01:04,715 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-28 09:01:04,717 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 09:01:04,717 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 09:01:04,731 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 09:01:04,731 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:01:04" (1/1) ... [2021-10-28 09:01:04,732 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72552e64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:01:04, skipping insertion in model container [2021-10-28 09:01:04,732 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:01:04" (1/1) ... [2021-10-28 09:01:04,739 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 09:01:04,782 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 09:01:05,219 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:01:05,238 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 09:01:05,296 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:01:05,353 INFO L208 MainTranslator]: Completed translation [2021-10-28 09:01:05,353 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:01:05 WrapperNode [2021-10-28 09:01:05,354 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 09:01:05,355 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 09:01:05,355 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 09:01:05,355 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 09:01:05,368 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:01:05" (1/1) ... [2021-10-28 09:01:05,369 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:01:05" (1/1) ... [2021-10-28 09:01:05,400 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:01:05" (1/1) ... [2021-10-28 09:01:05,401 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:01:05" (1/1) ... [2021-10-28 09:01:05,445 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:01:05" (1/1) ... [2021-10-28 09:01:05,450 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:01:05" (1/1) ... [2021-10-28 09:01:05,456 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:01:05" (1/1) ... [2021-10-28 09:01:05,465 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 09:01:05,467 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 09:01:05,467 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 09:01:05,467 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 09:01:05,468 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:01:05" (1/1) ... [2021-10-28 09:01:05,476 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 09:01:05,497 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cd72010-c09b-4bd3-84e9-04440f91be35/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:01:05,517 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cd72010-c09b-4bd3-84e9-04440f91be35/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 09:01:05,520 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cd72010-c09b-4bd3-84e9-04440f91be35/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 09:01:05,560 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-10-28 09:01:05,561 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 09:01:05,565 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~~TO~VOID [2021-10-28 09:01:05,566 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2021-10-28 09:01:05,567 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-10-28 09:01:05,567 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-10-28 09:01:05,567 INFO L138 BoogieDeclarations]: Found implementation of procedure parse_input [2021-10-28 09:01:05,568 INFO L138 BoogieDeclarations]: Found implementation of procedure c1 [2021-10-28 09:01:05,569 INFO L138 BoogieDeclarations]: Found implementation of procedure c2 [2021-10-28 09:01:05,569 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-10-28 09:01:05,570 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-10-28 09:01:05,570 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-10-28 09:01:05,570 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-10-28 09:01:05,571 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-10-28 09:01:05,571 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-10-28 09:01:05,571 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-10-28 09:01:05,571 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-10-28 09:01:05,572 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-10-28 09:01:05,576 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-10-28 09:01:05,576 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-10-28 09:01:05,577 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-10-28 09:01:05,577 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-10-28 09:01:05,577 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-10-28 09:01:05,577 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-10-28 09:01:05,578 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-10-28 09:01:05,578 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-10-28 09:01:05,578 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-10-28 09:01:05,578 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-10-28 09:01:05,579 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-10-28 09:01:05,579 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-10-28 09:01:05,579 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-10-28 09:01:05,579 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-10-28 09:01:05,579 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-10-28 09:01:05,580 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-10-28 09:01:05,580 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-10-28 09:01:05,580 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-10-28 09:01:05,580 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-10-28 09:01:05,580 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-10-28 09:01:05,580 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-10-28 09:01:05,581 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-10-28 09:01:05,581 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-10-28 09:01:05,581 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-10-28 09:01:05,581 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-10-28 09:01:05,582 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-10-28 09:01:05,582 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-10-28 09:01:05,582 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-10-28 09:01:05,582 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-10-28 09:01:05,583 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-10-28 09:01:05,583 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-10-28 09:01:05,583 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-10-28 09:01:05,584 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-10-28 09:01:05,584 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-10-28 09:01:05,585 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-10-28 09:01:05,585 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-10-28 09:01:05,585 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-10-28 09:01:05,585 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-10-28 09:01:05,586 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-10-28 09:01:05,586 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-10-28 09:01:05,586 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-10-28 09:01:05,586 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-10-28 09:01:05,587 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-10-28 09:01:05,587 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-10-28 09:01:05,587 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-10-28 09:01:05,588 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-10-28 09:01:05,588 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-10-28 09:01:05,590 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-10-28 09:01:05,590 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2021-10-28 09:01:05,591 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-10-28 09:01:05,591 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-10-28 09:01:05,591 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-10-28 09:01:05,591 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-10-28 09:01:05,592 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-10-28 09:01:05,592 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-10-28 09:01:05,592 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-10-28 09:01:05,592 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-10-28 09:01:05,592 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-10-28 09:01:05,593 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-10-28 09:01:05,593 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-10-28 09:01:05,593 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-10-28 09:01:05,593 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-10-28 09:01:05,593 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-10-28 09:01:05,594 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-10-28 09:01:05,594 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-10-28 09:01:05,595 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-10-28 09:01:05,595 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-10-28 09:01:05,595 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-10-28 09:01:05,595 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-10-28 09:01:05,595 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-10-28 09:01:05,595 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-10-28 09:01:05,596 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-10-28 09:01:05,596 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-10-28 09:01:05,596 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-10-28 09:01:05,596 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-10-28 09:01:05,596 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-10-28 09:01:05,596 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-10-28 09:01:05,597 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-10-28 09:01:05,597 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-10-28 09:01:05,597 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-10-28 09:01:05,597 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-10-28 09:01:05,597 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-10-28 09:01:05,597 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-10-28 09:01:05,598 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-10-28 09:01:05,598 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-10-28 09:01:05,598 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-10-28 09:01:05,598 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-10-28 09:01:05,599 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-10-28 09:01:05,599 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-10-28 09:01:05,600 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-10-28 09:01:05,600 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-10-28 09:01:05,601 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-10-28 09:01:05,601 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-10-28 09:01:05,601 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-10-28 09:01:05,601 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-10-28 09:01:05,601 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-10-28 09:01:05,602 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-10-28 09:01:05,602 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2021-10-28 09:01:05,602 INFO L130 BoogieDeclarations]: Found specification of procedure memmove [2021-10-28 09:01:05,602 INFO L130 BoogieDeclarations]: Found specification of procedure memccpy [2021-10-28 09:01:05,602 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2021-10-28 09:01:05,602 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-10-28 09:01:05,603 INFO L130 BoogieDeclarations]: Found specification of procedure memchr [2021-10-28 09:01:05,603 INFO L130 BoogieDeclarations]: Found specification of procedure strcpy [2021-10-28 09:01:05,603 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2021-10-28 09:01:05,603 INFO L130 BoogieDeclarations]: Found specification of procedure strcat [2021-10-28 09:01:05,604 INFO L130 BoogieDeclarations]: Found specification of procedure strncat [2021-10-28 09:01:05,604 INFO L130 BoogieDeclarations]: Found specification of procedure strcmp [2021-10-28 09:01:05,605 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2021-10-28 09:01:05,608 INFO L130 BoogieDeclarations]: Found specification of procedure strcoll [2021-10-28 09:01:05,608 INFO L130 BoogieDeclarations]: Found specification of procedure strxfrm [2021-10-28 09:01:05,609 INFO L130 BoogieDeclarations]: Found specification of procedure strcoll_l [2021-10-28 09:01:05,609 INFO L130 BoogieDeclarations]: Found specification of procedure strxfrm_l [2021-10-28 09:01:05,611 INFO L130 BoogieDeclarations]: Found specification of procedure strdup [2021-10-28 09:01:05,612 INFO L130 BoogieDeclarations]: Found specification of procedure strndup [2021-10-28 09:01:05,612 INFO L130 BoogieDeclarations]: Found specification of procedure strchr [2021-10-28 09:01:05,612 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2021-10-28 09:01:05,612 INFO L130 BoogieDeclarations]: Found specification of procedure strcspn [2021-10-28 09:01:05,614 INFO L130 BoogieDeclarations]: Found specification of procedure strspn [2021-10-28 09:01:05,614 INFO L130 BoogieDeclarations]: Found specification of procedure strpbrk [2021-10-28 09:01:05,614 INFO L130 BoogieDeclarations]: Found specification of procedure strstr [2021-10-28 09:01:05,615 INFO L130 BoogieDeclarations]: Found specification of procedure strtok [2021-10-28 09:01:05,615 INFO L130 BoogieDeclarations]: Found specification of procedure __strtok_r [2021-10-28 09:01:05,615 INFO L130 BoogieDeclarations]: Found specification of procedure strtok_r [2021-10-28 09:01:05,615 INFO L130 BoogieDeclarations]: Found specification of procedure strlen [2021-10-28 09:01:05,615 INFO L130 BoogieDeclarations]: Found specification of procedure strnlen [2021-10-28 09:01:05,615 INFO L130 BoogieDeclarations]: Found specification of procedure strerror [2021-10-28 09:01:05,615 INFO L130 BoogieDeclarations]: Found specification of procedure strerror_r [2021-10-28 09:01:05,616 INFO L130 BoogieDeclarations]: Found specification of procedure strerror_l [2021-10-28 09:01:05,616 INFO L130 BoogieDeclarations]: Found specification of procedure __bzero [2021-10-28 09:01:05,616 INFO L130 BoogieDeclarations]: Found specification of procedure bcopy [2021-10-28 09:01:05,616 INFO L130 BoogieDeclarations]: Found specification of procedure bzero [2021-10-28 09:01:05,616 INFO L130 BoogieDeclarations]: Found specification of procedure bcmp [2021-10-28 09:01:05,616 INFO L130 BoogieDeclarations]: Found specification of procedure index [2021-10-28 09:01:05,616 INFO L130 BoogieDeclarations]: Found specification of procedure rindex [2021-10-28 09:01:05,617 INFO L130 BoogieDeclarations]: Found specification of procedure ffs [2021-10-28 09:01:05,617 INFO L130 BoogieDeclarations]: Found specification of procedure strcasecmp [2021-10-28 09:01:05,617 INFO L130 BoogieDeclarations]: Found specification of procedure strncasecmp [2021-10-28 09:01:05,617 INFO L130 BoogieDeclarations]: Found specification of procedure strsep [2021-10-28 09:01:05,617 INFO L130 BoogieDeclarations]: Found specification of procedure strsignal [2021-10-28 09:01:05,617 INFO L130 BoogieDeclarations]: Found specification of procedure __stpcpy [2021-10-28 09:01:05,618 INFO L130 BoogieDeclarations]: Found specification of procedure stpcpy [2021-10-28 09:01:05,618 INFO L130 BoogieDeclarations]: Found specification of procedure __stpncpy [2021-10-28 09:01:05,618 INFO L130 BoogieDeclarations]: Found specification of procedure stpncpy [2021-10-28 09:01:05,618 INFO L130 BoogieDeclarations]: Found specification of procedure c1 [2021-10-28 09:01:05,618 INFO L130 BoogieDeclarations]: Found specification of procedure c2 [2021-10-28 09:01:05,618 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 09:01:05,618 INFO L130 BoogieDeclarations]: Found specification of procedure parse_input [2021-10-28 09:01:05,619 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~~TO~VOID [2021-10-28 09:01:05,619 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-28 09:01:05,619 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-10-28 09:01:05,619 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-28 09:01:05,620 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-28 09:01:05,620 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-10-28 09:01:05,620 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-10-28 09:01:05,620 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-28 09:01:05,620 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-10-28 09:01:05,620 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 09:01:05,621 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2021-10-28 09:01:05,621 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-28 09:01:05,622 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-10-28 09:01:06,362 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 09:01:06,362 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-10-28 09:01:06,364 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:01:06 BoogieIcfgContainer [2021-10-28 09:01:06,364 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 09:01:06,366 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 09:01:06,366 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 09:01:06,369 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 09:01:06,370 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 09:01:04" (1/3) ... [2021-10-28 09:01:06,371 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56313a3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:01:06, skipping insertion in model container [2021-10-28 09:01:06,371 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:01:05" (2/3) ... [2021-10-28 09:01:06,371 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56313a3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:01:06, skipping insertion in model container [2021-10-28 09:01:06,372 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:01:06" (3/3) ... [2021-10-28 09:01:06,373 INFO L111 eAbstractionObserver]: Analyzing ICFG bftpd_1.i [2021-10-28 09:01:06,379 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 09:01:06,379 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 23 error locations. [2021-10-28 09:01:06,427 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 09:01:06,434 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 09:01:06,434 INFO L340 AbstractCegarLoop]: Starting to check reachability of 23 error locations. [2021-10-28 09:01:06,451 INFO L276 IsEmpty]: Start isEmpty. Operand has 79 states, 41 states have (on average 1.7560975609756098) internal successors, (72), 65 states have internal predecessors, (72), 8 states have call successors, (8), 6 states have call predecessors, (8), 6 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) [2021-10-28 09:01:06,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-28 09:01:06,460 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:01:06,461 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:01:06,461 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting parse_inputErr0REQUIRES_VIOLATION === [c1Err0ASSERT_VIOLATIONMEMORY_FREE, c1Err1ASSERT_VIOLATIONMEMORY_FREE, c1Err2ASSERT_VIOLATIONMEMORY_FREE, c2Err0ASSERT_VIOLATIONMEMORY_FREE (and 19 more)] === [2021-10-28 09:01:06,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:01:06,468 INFO L85 PathProgramCache]: Analyzing trace with hash -317410196, now seen corresponding path program 1 times [2021-10-28 09:01:06,496 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:01:06,496 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2057687106] [2021-10-28 09:01:06,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:01:06,497 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:01:06,498 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cd72010-c09b-4bd3-84e9-04440f91be35/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:01:06,501 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cd72010-c09b-4bd3-84e9-04440f91be35/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:01:06,535 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cd72010-c09b-4bd3-84e9-04440f91be35/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-28 09:01:06,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:01:06,746 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-28 09:01:06,751 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:01:07,167 INFO L354 Elim1Store]: treesize reduction 351, result has 15.4 percent of original size [2021-10-28 09:01:07,169 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 6 case distinctions, treesize of input 24 treesize of output 69 [2021-10-28 09:01:08,201 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 09:01:08,201 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 09:01:08,270 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 09:01:08,271 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 09:01:08,271 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2057687106] [2021-10-28 09:01:08,272 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2057687106] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 09:01:08,272 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:01:08,272 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-28 09:01:08,275 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660063304] [2021-10-28 09:01:08,280 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 09:01:08,281 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 09:01:08,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 09:01:08,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 09:01:08,302 INFO L87 Difference]: Start difference. First operand has 79 states, 41 states have (on average 1.7560975609756098) internal successors, (72), 65 states have internal predecessors, (72), 8 states have call successors, (8), 6 states have call predecessors, (8), 6 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:01:08,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:01:08,496 INFO L93 Difference]: Finished difference Result 97 states and 111 transitions. [2021-10-28 09:01:08,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 09:01:08,499 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 9 [2021-10-28 09:01:08,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:01:08,510 INFO L225 Difference]: With dead ends: 97 [2021-10-28 09:01:08,510 INFO L226 Difference]: Without dead ends: 91 [2021-10-28 09:01:08,512 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 16 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 09:01:08,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2021-10-28 09:01:08,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 87. [2021-10-28 09:01:08,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 48 states have (on average 1.6041666666666667) internal successors, (77), 69 states have internal predecessors, (77), 10 states have call successors, (10), 7 states have call predecessors, (10), 8 states have return successors, (16), 10 states have call predecessors, (16), 9 states have call successors, (16) [2021-10-28 09:01:08,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 103 transitions. [2021-10-28 09:01:08,562 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 103 transitions. Word has length 9 [2021-10-28 09:01:08,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:01:08,563 INFO L470 AbstractCegarLoop]: Abstraction has 87 states and 103 transitions. [2021-10-28 09:01:08,563 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:01:08,563 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 103 transitions. [2021-10-28 09:01:08,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-28 09:01:08,565 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:01:08,565 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:01:08,582 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cd72010-c09b-4bd3-84e9-04440f91be35/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-28 09:01:08,778 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cd72010-c09b-4bd3-84e9-04440f91be35/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:01:08,778 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting parse_inputErr1REQUIRES_VIOLATION === [c1Err0ASSERT_VIOLATIONMEMORY_FREE, c1Err1ASSERT_VIOLATIONMEMORY_FREE, c1Err2ASSERT_VIOLATIONMEMORY_FREE, c2Err0ASSERT_VIOLATIONMEMORY_FREE (and 19 more)] === [2021-10-28 09:01:08,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:01:08,779 INFO L85 PathProgramCache]: Analyzing trace with hash -317410195, now seen corresponding path program 1 times [2021-10-28 09:01:08,780 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:01:08,780 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1002849046] [2021-10-28 09:01:08,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:01:08,781 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:01:08,781 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cd72010-c09b-4bd3-84e9-04440f91be35/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:01:08,782 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cd72010-c09b-4bd3-84e9-04440f91be35/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:01:08,818 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cd72010-c09b-4bd3-84e9-04440f91be35/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-28 09:01:08,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:01:08,990 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-28 09:01:08,992 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:01:09,244 INFO L354 Elim1Store]: treesize reduction 240, result has 16.1 percent of original size [2021-10-28 09:01:09,245 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 21 treesize of output 51 [2021-10-28 09:01:09,413 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 09:01:09,414 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 09:01:09,777 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 09:01:09,777 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 09:01:09,778 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1002849046] [2021-10-28 09:01:09,778 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1002849046] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 09:01:09,778 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:01:09,778 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-10-28 09:01:09,778 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236965920] [2021-10-28 09:01:09,780 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 09:01:09,780 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 09:01:09,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 09:01:09,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-28 09:01:09,781 INFO L87 Difference]: Start difference. First operand 87 states and 103 transitions. Second operand has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-10-28 09:01:10,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:01:10,494 INFO L93 Difference]: Finished difference Result 174 states and 228 transitions. [2021-10-28 09:01:10,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 09:01:10,495 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 9 [2021-10-28 09:01:10,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:01:10,498 INFO L225 Difference]: With dead ends: 174 [2021-10-28 09:01:10,498 INFO L226 Difference]: Without dead ends: 174 [2021-10-28 09:01:10,499 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2021-10-28 09:01:10,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2021-10-28 09:01:10,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 142. [2021-10-28 09:01:10,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 93 states have (on average 1.6236559139784945) internal successors, (151), 114 states have internal predecessors, (151), 16 states have call successors, (16), 11 states have call predecessors, (16), 12 states have return successors, (38), 16 states have call predecessors, (38), 15 states have call successors, (38) [2021-10-28 09:01:10,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 205 transitions. [2021-10-28 09:01:10,534 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 205 transitions. Word has length 9 [2021-10-28 09:01:10,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:01:10,535 INFO L470 AbstractCegarLoop]: Abstraction has 142 states and 205 transitions. [2021-10-28 09:01:10,535 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-10-28 09:01:10,535 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 205 transitions. [2021-10-28 09:01:10,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-28 09:01:10,536 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:01:10,536 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:01:10,555 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cd72010-c09b-4bd3-84e9-04440f91be35/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-28 09:01:10,747 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cd72010-c09b-4bd3-84e9-04440f91be35/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:01:10,748 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE === [c1Err0ASSERT_VIOLATIONMEMORY_FREE, c1Err1ASSERT_VIOLATIONMEMORY_FREE, c1Err2ASSERT_VIOLATIONMEMORY_FREE, c2Err0ASSERT_VIOLATIONMEMORY_FREE (and 19 more)] === [2021-10-28 09:01:10,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:01:10,749 INFO L85 PathProgramCache]: Analyzing trace with hash -1249781436, now seen corresponding path program 1 times [2021-10-28 09:01:10,749 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:01:10,749 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1021538152] [2021-10-28 09:01:10,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:01:10,750 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:01:10,750 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cd72010-c09b-4bd3-84e9-04440f91be35/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:01:10,751 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cd72010-c09b-4bd3-84e9-04440f91be35/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:01:10,759 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cd72010-c09b-4bd3-84e9-04440f91be35/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-28 09:01:11,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:01:11,019 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-28 09:01:11,021 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:01:11,317 INFO L354 Elim1Store]: treesize reduction 463, result has 13.5 percent of original size [2021-10-28 09:01:11,318 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 9 case distinctions, treesize of input 234 treesize of output 278 [2021-10-28 09:01:17,743 INFO L354 Elim1Store]: treesize reduction 16, result has 51.5 percent of original size [2021-10-28 09:01:17,743 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 118 treesize of output 118 [2021-10-28 09:01:26,751 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 133 treesize of output 105 [2021-10-28 09:01:28,739 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 09:01:28,739 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 09:01:29,115 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 09:01:29,115 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 09:01:29,115 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1021538152] [2021-10-28 09:01:29,115 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1021538152] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 09:01:29,116 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:01:29,116 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 4] imperfect sequences [] total 8 [2021-10-28 09:01:29,116 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149998554] [2021-10-28 09:01:29,117 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-28 09:01:29,117 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 09:01:29,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-28 09:01:29,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-10-28 09:01:29,118 INFO L87 Difference]: Start difference. First operand 142 states and 205 transitions. Second operand has 9 states, 8 states have (on average 1.5) internal successors, (12), 7 states have internal predecessors, (12), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-10-28 09:01:31,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:01:31,440 INFO L93 Difference]: Finished difference Result 261 states and 376 transitions. [2021-10-28 09:01:31,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-28 09:01:31,441 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 1.5) internal successors, (12), 7 states have internal predecessors, (12), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 10 [2021-10-28 09:01:31,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:01:31,445 INFO L225 Difference]: With dead ends: 261 [2021-10-28 09:01:31,445 INFO L226 Difference]: Without dead ends: 261 [2021-10-28 09:01:31,446 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 9 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2021-10-28 09:01:31,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2021-10-28 09:01:31,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 202. [2021-10-28 09:01:31,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 144 states have (on average 1.6180555555555556) internal successors, (233), 165 states have internal predecessors, (233), 21 states have call successors, (21), 16 states have call predecessors, (21), 16 states have return successors, (51), 20 states have call predecessors, (51), 20 states have call successors, (51) [2021-10-28 09:01:31,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 305 transitions. [2021-10-28 09:01:31,474 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 305 transitions. Word has length 10 [2021-10-28 09:01:31,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:01:31,475 INFO L470 AbstractCegarLoop]: Abstraction has 202 states and 305 transitions. [2021-10-28 09:01:31,475 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 1.5) internal successors, (12), 7 states have internal predecessors, (12), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-10-28 09:01:31,475 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 305 transitions. [2021-10-28 09:01:31,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-28 09:01:31,476 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:01:31,476 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:01:31,489 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cd72010-c09b-4bd3-84e9-04440f91be35/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-28 09:01:31,681 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cd72010-c09b-4bd3-84e9-04440f91be35/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:01:31,681 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting parse_inputErr3ASSERT_VIOLATIONMEMORY_DEREFERENCE === [c1Err0ASSERT_VIOLATIONMEMORY_FREE, c1Err1ASSERT_VIOLATIONMEMORY_FREE, c1Err2ASSERT_VIOLATIONMEMORY_FREE, c2Err0ASSERT_VIOLATIONMEMORY_FREE (and 19 more)] === [2021-10-28 09:01:31,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:01:31,682 INFO L85 PathProgramCache]: Analyzing trace with hash -88518740, now seen corresponding path program 1 times [2021-10-28 09:01:31,682 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:01:31,682 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [263218938] [2021-10-28 09:01:31,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:01:31,683 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:01:31,683 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cd72010-c09b-4bd3-84e9-04440f91be35/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:01:31,684 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cd72010-c09b-4bd3-84e9-04440f91be35/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:01:31,691 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cd72010-c09b-4bd3-84e9-04440f91be35/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-28 09:01:31,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:01:31,973 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-28 09:01:31,975 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:01:32,246 INFO L354 Elim1Store]: treesize reduction 336, result has 13.8 percent of original size [2021-10-28 09:01:32,246 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 84 treesize of output 117 [2021-10-28 09:01:32,259 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-10-28 09:01:32,260 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 451 treesize of output 433 [2021-10-28 09:01:35,782 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-28 09:01:35,792 INFO L354 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2021-10-28 09:01:35,793 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 82 treesize of output 72 [2021-10-28 09:01:41,483 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 107 treesize of output 83 [2021-10-28 09:01:41,488 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 72 [2021-10-28 09:01:44,592 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 09:01:44,592 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 09:01:45,081 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 09:01:45,082 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 09:01:45,082 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [263218938] [2021-10-28 09:01:45,082 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [263218938] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 09:01:45,082 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:01:45,083 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 4] imperfect sequences [] total 8 [2021-10-28 09:01:45,083 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906623592] [2021-10-28 09:01:45,083 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-28 09:01:45,083 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 09:01:45,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-28 09:01:45,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-10-28 09:01:45,087 INFO L87 Difference]: Start difference. First operand 202 states and 305 transitions. Second operand has 9 states, 8 states have (on average 1.75) internal successors, (14), 7 states have internal predecessors, (14), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-10-28 09:01:47,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:01:47,018 INFO L93 Difference]: Finished difference Result 379 states and 540 transitions. [2021-10-28 09:01:47,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-28 09:01:47,020 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 1.75) internal successors, (14), 7 states have internal predecessors, (14), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 11 [2021-10-28 09:01:47,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:01:47,025 INFO L225 Difference]: With dead ends: 379 [2021-10-28 09:01:47,025 INFO L226 Difference]: Without dead ends: 379 [2021-10-28 09:01:47,026 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2021-10-28 09:01:47,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2021-10-28 09:01:47,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 304. [2021-10-28 09:01:47,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304 states, 223 states have (on average 1.5964125560538116) internal successors, (356), 247 states have internal predecessors, (356), 31 states have call successors, (31), 24 states have call predecessors, (31), 29 states have return successors, (99), 32 states have call predecessors, (99), 30 states have call successors, (99) [2021-10-28 09:01:47,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 486 transitions. [2021-10-28 09:01:47,076 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 486 transitions. Word has length 11 [2021-10-28 09:01:47,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:01:47,076 INFO L470 AbstractCegarLoop]: Abstraction has 304 states and 486 transitions. [2021-10-28 09:01:47,076 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 1.75) internal successors, (14), 7 states have internal predecessors, (14), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-10-28 09:01:47,077 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 486 transitions. [2021-10-28 09:01:47,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-28 09:01:47,077 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:01:47,077 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:01:47,096 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cd72010-c09b-4bd3-84e9-04440f91be35/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-28 09:01:47,294 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cd72010-c09b-4bd3-84e9-04440f91be35/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:01:47,295 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting parse_inputErr4ASSERT_VIOLATIONMEMORY_DEREFERENCE === [c1Err0ASSERT_VIOLATIONMEMORY_FREE, c1Err1ASSERT_VIOLATIONMEMORY_FREE, c1Err2ASSERT_VIOLATIONMEMORY_FREE, c2Err0ASSERT_VIOLATIONMEMORY_FREE (and 19 more)] === [2021-10-28 09:01:47,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:01:47,295 INFO L85 PathProgramCache]: Analyzing trace with hash 1550886470, now seen corresponding path program 1 times [2021-10-28 09:01:47,295 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:01:47,296 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [407420411] [2021-10-28 09:01:47,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:01:47,296 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:01:47,296 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cd72010-c09b-4bd3-84e9-04440f91be35/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:01:47,298 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cd72010-c09b-4bd3-84e9-04440f91be35/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:01:47,305 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cd72010-c09b-4bd3-84e9-04440f91be35/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-28 09:01:47,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:01:47,562 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-28 09:01:47,564 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:01:47,763 INFO L354 Elim1Store]: treesize reduction 351, result has 15.4 percent of original size [2021-10-28 09:01:47,764 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 7 case distinctions, treesize of input 150 treesize of output 190 [2021-10-28 09:01:50,340 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-28 09:01:50,341 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 96 treesize of output 92 [2021-10-28 09:01:58,121 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 09:01:58,121 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 09:01:58,358 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 09:01:58,358 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 09:01:58,358 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [407420411] [2021-10-28 09:01:58,358 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [407420411] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 09:01:58,358 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:01:58,358 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 4] imperfect sequences [] total 8 [2021-10-28 09:01:58,358 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399873569] [2021-10-28 09:01:58,359 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-28 09:01:58,359 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 09:01:58,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-28 09:01:58,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-10-28 09:01:58,360 INFO L87 Difference]: Start difference. First operand 304 states and 486 transitions. Second operand has 9 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (5), 5 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-10-28 09:02:09,022 WARN L207 SmtUtils]: Spent 10.36 s on a formula simplification that was a NOOP. DAG size: 102 [2021-10-28 09:02:41,593 WARN L228 Executor]: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cd72010-c09b-4bd3-84e9-04440f91be35/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) stderr output: (error "out of memory") [2021-10-28 09:02:41,594 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cd72010-c09b-4bd3-84e9-04440f91be35/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 101 [2021-10-28 09:02:41,604 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cd72010-c09b-4bd3-84e9-04440f91be35/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2021-10-28 09:02:41,794 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cd72010-c09b-4bd3-84e9-04440f91be35/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:02:41,795 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cd72010-c09b-4bd3-84e9-04440f91be35/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.convertIOException(Executor.java:312) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:158) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.pop(Scriptor.java:139) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.DiffWrapperScript.pop(DiffWrapperScript.java:99) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.pop(WrapperScript.java:153) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.scripttransfer.HistoryRecordingScript.pop(HistoryRecordingScript.java:117) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.pop(ManagedScript.java:128) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.unAssertPostcondition(IncrementalHoareTripleChecker.java:662) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.clearAssertionStack(IncrementalHoareTripleChecker.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.releaseLock(IncrementalHoareTripleChecker.java:281) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ProtectiveHoareTripleChecker.releaseLock(ProtectiveHoareTripleChecker.java:93) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.EfficientHoareTripleChecker.releaseLock(EfficientHoareTripleChecker.java:162) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.CachingHoareTripleChecker.releaseLock(CachingHoareTripleChecker.java:201) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.switchToReadonlyMode(AbstractInterpolantAutomaton.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.computeAutomataDifference(BasicCegarLoop.java:886) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.refineAbstraction(BasicCegarLoop.java:783) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.refineAbstractionInternal(AbstractCegarLoop.java:462) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:420) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: java.io.IOException: Broken pipe at java.base/java.io.FileOutputStream.writeBytes(Native Method) at java.base/java.io.FileOutputStream.write(FileOutputStream.java:354) at java.base/java.io.BufferedOutputStream.flushBuffer(BufferedOutputStream.java:81) at java.base/java.io.BufferedOutputStream.flush(BufferedOutputStream.java:142) at java.base/sun.nio.cs.StreamEncoder.implFlush(StreamEncoder.java:318) at java.base/sun.nio.cs.StreamEncoder.flush(StreamEncoder.java:153) at java.base/java.io.OutputStreamWriter.flush(OutputStreamWriter.java:251) at java.base/java.io.BufferedWriter.flush(BufferedWriter.java:257) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:156) ... 35 more [2021-10-28 09:02:41,799 INFO L168 Benchmark]: Toolchain (without parser) took 97083.48 ms. Allocated memory was 54.5 MB in the beginning and 123.7 MB in the end (delta: 69.2 MB). Free memory was 28.8 MB in the beginning and 77.5 MB in the end (delta: -48.7 MB). Peak memory consumption was 21.3 MB. Max. memory is 16.1 GB. [2021-10-28 09:02:41,799 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 54.5 MB. Free memory is still 33.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 09:02:41,800 INFO L168 Benchmark]: CACSL2BoogieTranslator took 636.91 ms. Allocated memory was 54.5 MB in the beginning and 69.2 MB in the end (delta: 14.7 MB). Free memory was 28.6 MB in the beginning and 42.1 MB in the end (delta: -13.6 MB). Peak memory consumption was 5.9 MB. Max. memory is 16.1 GB. [2021-10-28 09:02:41,800 INFO L168 Benchmark]: Boogie Preprocessor took 111.02 ms. Allocated memory is still 69.2 MB. Free memory was 42.0 MB in the beginning and 38.5 MB in the end (delta: 3.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-28 09:02:41,801 INFO L168 Benchmark]: RCFGBuilder took 898.10 ms. Allocated memory is still 69.2 MB. Free memory was 38.3 MB in the beginning and 37.3 MB in the end (delta: 1.0 MB). Peak memory consumption was 10.3 MB. Max. memory is 16.1 GB. [2021-10-28 09:02:41,802 INFO L168 Benchmark]: TraceAbstraction took 95432.12 ms. Allocated memory was 69.2 MB in the beginning and 123.7 MB in the end (delta: 54.5 MB). Free memory was 37.0 MB in the beginning and 77.5 MB in the end (delta: -40.5 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-28 09:02:41,804 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 54.5 MB. Free memory is still 33.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 636.91 ms. Allocated memory was 54.5 MB in the beginning and 69.2 MB in the end (delta: 14.7 MB). Free memory was 28.6 MB in the beginning and 42.1 MB in the end (delta: -13.6 MB). Peak memory consumption was 5.9 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 111.02 ms. Allocated memory is still 69.2 MB. Free memory was 42.0 MB in the beginning and 38.5 MB in the end (delta: 3.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 898.10 ms. Allocated memory is still 69.2 MB. Free memory was 38.3 MB in the beginning and 37.3 MB in the end (delta: 1.0 MB). Peak memory consumption was 10.3 MB. Max. memory is 16.1 GB. * TraceAbstraction took 95432.12 ms. Allocated memory was 69.2 MB in the beginning and 123.7 MB in the end (delta: 54.5 MB). Free memory was 37.0 MB in the beginning and 77.5 MB in the end (delta: -40.5 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cd72010-c09b-4bd3-84e9-04440f91be35/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cd72010-c09b-4bd3-84e9-04440f91be35/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken: de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.convertIOException(Executor.java:312) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...