./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memcleanup.prp --file ../../sv-benchmarks/c/memsafety-bftpd/bftpd_2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (memcleanup) Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3575fc82-860b-435c-ba5b-2860696ab619/bin/uautomizer-UnR33cPsHg/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3575fc82-860b-435c-ba5b-2860696ab619/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_3575fc82-860b-435c-ba5b-2860696ab619/bin/uautomizer-UnR33cPsHg/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3575fc82-860b-435c-ba5b-2860696ab619/bin/uautomizer-UnR33cPsHg/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety-bftpd/bftpd_2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3575fc82-860b-435c-ba5b-2860696ab619/bin/uautomizer-UnR33cPsHg/config/svcomp-MemCleanup-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3575fc82-860b-435c-ba5b-2860696ab619/bin/uautomizer-UnR33cPsHg --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-memcleanup) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7c883b81b24ce5a721aa9a1ff13aef8a0d532ba87d9e130e470a0b88a1f8e93e .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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_3575fc82-860b-435c-ba5b-2860696ab619/bin/uautomizer-UnR33cPsHg/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3575fc82-860b-435c-ba5b-2860696ab619/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_3575fc82-860b-435c-ba5b-2860696ab619/bin/uautomizer-UnR33cPsHg/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3575fc82-860b-435c-ba5b-2860696ab619/bin/uautomizer-UnR33cPsHg/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety-bftpd/bftpd_2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3575fc82-860b-435c-ba5b-2860696ab619/bin/uautomizer-UnR33cPsHg/config/svcomp-MemCleanup-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3575fc82-860b-435c-ba5b-2860696ab619/bin/uautomizer-UnR33cPsHg --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-memcleanup) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7c883b81b24ce5a721aa9a1ff13aef8a0d532ba87d9e130e470a0b88a1f8e93e ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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_3575fc82-860b-435c-ba5b-2860696ab619/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 08:37:31,979 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 08:37:31,981 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 08:37:32,016 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 08:37:32,017 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 08:37:32,019 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 08:37:32,021 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 08:37:32,023 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 08:37:32,025 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 08:37:32,027 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 08:37:32,028 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 08:37:32,030 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 08:37:32,031 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 08:37:32,032 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 08:37:32,034 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 08:37:32,036 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 08:37:32,037 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 08:37:32,038 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 08:37:32,041 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 08:37:32,043 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 08:37:32,045 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 08:37:32,047 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 08:37:32,049 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 08:37:32,050 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 08:37:32,054 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 08:37:32,055 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 08:37:32,056 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 08:37:32,057 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 08:37:32,058 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 08:37:32,059 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 08:37:32,060 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 08:37:32,061 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 08:37:32,062 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 08:37:32,063 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 08:37:32,064 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 08:37:32,065 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 08:37:32,066 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 08:37:32,066 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 08:37:32,067 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 08:37:32,068 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 08:37:32,069 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 08:37:32,070 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3575fc82-860b-435c-ba5b-2860696ab619/bin/uautomizer-UnR33cPsHg/config/svcomp-MemCleanup-32bit-Automizer_Default.epf [2021-10-28 08:37:32,096 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 08:37:32,096 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 08:37:32,097 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 08:37:32,097 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 08:37:32,098 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 08:37:32,099 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 08:37:32,099 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 08:37:32,100 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 08:37:32,100 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 08:37:32,100 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-28 08:37:32,101 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 08:37:32,101 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 08:37:32,101 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 08:37:32,102 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-28 08:37:32,102 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-28 08:37:32,102 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 08:37:32,103 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-28 08:37:32,103 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 08:37:32,103 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 08:37:32,104 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 08:37:32,104 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 08:37:32,104 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 08:37:32,105 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 08:37:32,105 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 08:37:32,106 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 08:37:32,106 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 08:37:32,106 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-28 08:37:32,107 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 08:37:32,107 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_3575fc82-860b-435c-ba5b-2860696ab619/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3575fc82-860b-435c-ba5b-2860696ab619/bin/uautomizer-UnR33cPsHg Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7c883b81b24ce5a721aa9a1ff13aef8a0d532ba87d9e130e470a0b88a1f8e93e [2021-10-28 08:37:32,376 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 08:37:32,413 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 08:37:32,415 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 08:37:32,417 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 08:37:32,418 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 08:37:32,420 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3575fc82-860b-435c-ba5b-2860696ab619/bin/uautomizer-UnR33cPsHg/../../sv-benchmarks/c/memsafety-bftpd/bftpd_2.i [2021-10-28 08:37:32,501 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3575fc82-860b-435c-ba5b-2860696ab619/bin/uautomizer-UnR33cPsHg/data/4aa1da905/0b08ce2750e64b398d8248e4c183c8ed/FLAGefc73df27 [2021-10-28 08:37:33,098 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 08:37:33,099 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3575fc82-860b-435c-ba5b-2860696ab619/sv-benchmarks/c/memsafety-bftpd/bftpd_2.i [2021-10-28 08:37:33,122 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3575fc82-860b-435c-ba5b-2860696ab619/bin/uautomizer-UnR33cPsHg/data/4aa1da905/0b08ce2750e64b398d8248e4c183c8ed/FLAGefc73df27 [2021-10-28 08:37:33,378 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3575fc82-860b-435c-ba5b-2860696ab619/bin/uautomizer-UnR33cPsHg/data/4aa1da905/0b08ce2750e64b398d8248e4c183c8ed [2021-10-28 08:37:33,381 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 08:37:33,382 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-28 08:37:33,386 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 08:37:33,387 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 08:37:33,390 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 08:37:33,391 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 08:37:33" (1/1) ... [2021-10-28 08:37:33,392 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@436dafbd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:37:33, skipping insertion in model container [2021-10-28 08:37:33,393 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 08:37:33" (1/1) ... [2021-10-28 08:37:33,423 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 08:37:33,498 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 08:37:33,823 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 08:37:33,833 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 08:37:33,878 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 08:37:33,921 INFO L208 MainTranslator]: Completed translation [2021-10-28 08:37:33,921 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:37:33 WrapperNode [2021-10-28 08:37:33,922 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 08:37:33,923 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 08:37:33,923 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 08:37:33,923 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 08:37:33,935 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:37:33" (1/1) ... [2021-10-28 08:37:33,936 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:37:33" (1/1) ... [2021-10-28 08:37:33,952 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:37:33" (1/1) ... [2021-10-28 08:37:33,953 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:37:33" (1/1) ... [2021-10-28 08:37:33,975 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:37:33" (1/1) ... [2021-10-28 08:37:33,980 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:37:33" (1/1) ... [2021-10-28 08:37:33,985 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:37:33" (1/1) ... [2021-10-28 08:37:33,993 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 08:37:34,000 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 08:37:34,000 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 08:37:34,001 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 08:37:34,002 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:37:33" (1/1) ... [2021-10-28 08:37:34,015 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 08:37:34,027 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3575fc82-860b-435c-ba5b-2860696ab619/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:37:34,052 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3575fc82-860b-435c-ba5b-2860696ab619/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 08:37:34,068 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3575fc82-860b-435c-ba5b-2860696ab619/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 08:37:34,094 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-10-28 08:37:34,094 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 08:37:34,094 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~~TO~VOID [2021-10-28 08:37:34,095 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-10-28 08:37:34,095 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-10-28 08:37:34,095 INFO L138 BoogieDeclarations]: Found implementation of procedure parse_input [2021-10-28 08:37:34,095 INFO L138 BoogieDeclarations]: Found implementation of procedure c1 [2021-10-28 08:37:34,095 INFO L138 BoogieDeclarations]: Found implementation of procedure c2 [2021-10-28 08:37:34,096 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-10-28 08:37:34,096 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-10-28 08:37:34,096 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-10-28 08:37:34,096 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-10-28 08:37:34,098 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-10-28 08:37:34,099 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-10-28 08:37:34,099 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-10-28 08:37:34,099 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-10-28 08:37:34,099 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-10-28 08:37:34,099 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-10-28 08:37:34,099 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-10-28 08:37:34,099 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-10-28 08:37:34,100 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-10-28 08:37:34,100 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-10-28 08:37:34,100 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-10-28 08:37:34,100 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-10-28 08:37:34,100 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-10-28 08:37:34,101 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-10-28 08:37:34,101 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-10-28 08:37:34,101 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-10-28 08:37:34,101 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-10-28 08:37:34,101 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-10-28 08:37:34,101 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-10-28 08:37:34,102 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-10-28 08:37:34,102 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-10-28 08:37:34,102 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-10-28 08:37:34,102 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-10-28 08:37:34,102 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-10-28 08:37:34,102 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-10-28 08:37:34,103 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-10-28 08:37:34,103 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-10-28 08:37:34,103 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-10-28 08:37:34,103 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-10-28 08:37:34,103 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-10-28 08:37:34,103 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-10-28 08:37:34,104 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-10-28 08:37:34,104 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-10-28 08:37:34,104 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-10-28 08:37:34,104 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-10-28 08:37:34,104 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-10-28 08:37:34,110 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-10-28 08:37:34,110 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-10-28 08:37:34,110 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-10-28 08:37:34,111 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-10-28 08:37:34,111 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-10-28 08:37:34,113 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-10-28 08:37:34,114 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-10-28 08:37:34,114 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-10-28 08:37:34,114 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-10-28 08:37:34,115 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-10-28 08:37:34,115 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-10-28 08:37:34,115 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-10-28 08:37:34,116 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-10-28 08:37:34,116 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-10-28 08:37:34,116 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-10-28 08:37:34,116 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-10-28 08:37:34,117 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-10-28 08:37:34,117 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2021-10-28 08:37:34,117 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-10-28 08:37:34,117 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-10-28 08:37:34,119 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-10-28 08:37:34,120 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-10-28 08:37:34,120 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-10-28 08:37:34,120 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-10-28 08:37:34,122 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-10-28 08:37:34,122 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-10-28 08:37:34,122 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-10-28 08:37:34,122 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-10-28 08:37:34,123 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-10-28 08:37:34,123 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-10-28 08:37:34,123 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-10-28 08:37:34,123 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-10-28 08:37:34,123 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-10-28 08:37:34,125 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-10-28 08:37:34,125 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-10-28 08:37:34,125 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-10-28 08:37:34,126 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-10-28 08:37:34,126 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-10-28 08:37:34,126 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-10-28 08:37:34,126 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-10-28 08:37:34,126 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-10-28 08:37:34,126 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-10-28 08:37:34,127 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-10-28 08:37:34,127 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-10-28 08:37:34,127 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-10-28 08:37:34,127 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-10-28 08:37:34,127 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-10-28 08:37:34,128 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-10-28 08:37:34,128 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-10-28 08:37:34,128 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-10-28 08:37:34,128 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-10-28 08:37:34,128 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-10-28 08:37:34,128 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-10-28 08:37:34,129 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-10-28 08:37:34,129 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-10-28 08:37:34,129 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-10-28 08:37:34,129 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-10-28 08:37:34,130 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-10-28 08:37:34,130 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-10-28 08:37:34,130 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-10-28 08:37:34,131 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-10-28 08:37:34,131 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-10-28 08:37:34,131 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-10-28 08:37:34,131 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-10-28 08:37:34,131 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-10-28 08:37:34,131 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-10-28 08:37:34,132 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2021-10-28 08:37:34,132 INFO L130 BoogieDeclarations]: Found specification of procedure memmove [2021-10-28 08:37:34,132 INFO L130 BoogieDeclarations]: Found specification of procedure memccpy [2021-10-28 08:37:34,132 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2021-10-28 08:37:34,132 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-10-28 08:37:34,133 INFO L130 BoogieDeclarations]: Found specification of procedure memchr [2021-10-28 08:37:34,133 INFO L130 BoogieDeclarations]: Found specification of procedure strcpy [2021-10-28 08:37:34,133 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2021-10-28 08:37:34,133 INFO L130 BoogieDeclarations]: Found specification of procedure strcat [2021-10-28 08:37:34,133 INFO L130 BoogieDeclarations]: Found specification of procedure strncat [2021-10-28 08:37:34,133 INFO L130 BoogieDeclarations]: Found specification of procedure strcmp [2021-10-28 08:37:34,134 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2021-10-28 08:37:34,135 INFO L130 BoogieDeclarations]: Found specification of procedure strcoll [2021-10-28 08:37:34,135 INFO L130 BoogieDeclarations]: Found specification of procedure strxfrm [2021-10-28 08:37:34,135 INFO L130 BoogieDeclarations]: Found specification of procedure strcoll_l [2021-10-28 08:37:34,136 INFO L130 BoogieDeclarations]: Found specification of procedure strxfrm_l [2021-10-28 08:37:34,137 INFO L130 BoogieDeclarations]: Found specification of procedure strdup [2021-10-28 08:37:34,139 INFO L130 BoogieDeclarations]: Found specification of procedure strndup [2021-10-28 08:37:34,140 INFO L130 BoogieDeclarations]: Found specification of procedure strchr [2021-10-28 08:37:34,140 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2021-10-28 08:37:34,140 INFO L130 BoogieDeclarations]: Found specification of procedure strcspn [2021-10-28 08:37:34,141 INFO L130 BoogieDeclarations]: Found specification of procedure strspn [2021-10-28 08:37:34,142 INFO L130 BoogieDeclarations]: Found specification of procedure strpbrk [2021-10-28 08:37:34,142 INFO L130 BoogieDeclarations]: Found specification of procedure strstr [2021-10-28 08:37:34,142 INFO L130 BoogieDeclarations]: Found specification of procedure strtok [2021-10-28 08:37:34,142 INFO L130 BoogieDeclarations]: Found specification of procedure __strtok_r [2021-10-28 08:37:34,143 INFO L130 BoogieDeclarations]: Found specification of procedure strtok_r [2021-10-28 08:37:34,143 INFO L130 BoogieDeclarations]: Found specification of procedure strlen [2021-10-28 08:37:34,144 INFO L130 BoogieDeclarations]: Found specification of procedure strnlen [2021-10-28 08:37:34,144 INFO L130 BoogieDeclarations]: Found specification of procedure strerror [2021-10-28 08:37:34,144 INFO L130 BoogieDeclarations]: Found specification of procedure strerror_r [2021-10-28 08:37:34,145 INFO L130 BoogieDeclarations]: Found specification of procedure strerror_l [2021-10-28 08:37:34,145 INFO L130 BoogieDeclarations]: Found specification of procedure __bzero [2021-10-28 08:37:34,145 INFO L130 BoogieDeclarations]: Found specification of procedure bcopy [2021-10-28 08:37:34,145 INFO L130 BoogieDeclarations]: Found specification of procedure bzero [2021-10-28 08:37:34,145 INFO L130 BoogieDeclarations]: Found specification of procedure bcmp [2021-10-28 08:37:34,145 INFO L130 BoogieDeclarations]: Found specification of procedure index [2021-10-28 08:37:34,146 INFO L130 BoogieDeclarations]: Found specification of procedure rindex [2021-10-28 08:37:34,146 INFO L130 BoogieDeclarations]: Found specification of procedure ffs [2021-10-28 08:37:34,146 INFO L130 BoogieDeclarations]: Found specification of procedure strcasecmp [2021-10-28 08:37:34,146 INFO L130 BoogieDeclarations]: Found specification of procedure strncasecmp [2021-10-28 08:37:34,146 INFO L130 BoogieDeclarations]: Found specification of procedure strsep [2021-10-28 08:37:34,146 INFO L130 BoogieDeclarations]: Found specification of procedure strsignal [2021-10-28 08:37:34,147 INFO L130 BoogieDeclarations]: Found specification of procedure __stpcpy [2021-10-28 08:37:34,147 INFO L130 BoogieDeclarations]: Found specification of procedure stpcpy [2021-10-28 08:37:34,147 INFO L130 BoogieDeclarations]: Found specification of procedure __stpncpy [2021-10-28 08:37:34,147 INFO L130 BoogieDeclarations]: Found specification of procedure stpncpy [2021-10-28 08:37:34,147 INFO L130 BoogieDeclarations]: Found specification of procedure c1 [2021-10-28 08:37:34,147 INFO L130 BoogieDeclarations]: Found specification of procedure c2 [2021-10-28 08:37:34,148 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 08:37:34,148 INFO L130 BoogieDeclarations]: Found specification of procedure parse_input [2021-10-28 08:37:34,148 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~~TO~VOID [2021-10-28 08:37:34,148 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-28 08:37:34,148 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-28 08:37:34,148 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-28 08:37:34,149 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-28 08:37:34,149 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-10-28 08:37:34,149 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-10-28 08:37:34,150 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-28 08:37:34,150 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-10-28 08:37:34,150 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 08:37:34,150 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-28 08:37:34,150 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-28 08:37:34,797 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 08:37:34,803 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-10-28 08:37:34,805 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 08:37:34 BoogieIcfgContainer [2021-10-28 08:37:34,806 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 08:37:34,809 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 08:37:34,809 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 08:37:34,816 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 08:37:34,816 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 08:37:33" (1/3) ... [2021-10-28 08:37:34,817 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ab55552 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 08:37:34, skipping insertion in model container [2021-10-28 08:37:34,818 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:37:33" (2/3) ... [2021-10-28 08:37:34,818 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ab55552 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 08:37:34, skipping insertion in model container [2021-10-28 08:37:34,818 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 08:37:34" (3/3) ... [2021-10-28 08:37:34,820 INFO L111 eAbstractionObserver]: Analyzing ICFG bftpd_2.i [2021-10-28 08:37:34,831 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 08:37:34,831 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 20 error locations. [2021-10-28 08:37:34,878 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 08:37:34,883 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 08:37:34,883 INFO L340 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2021-10-28 08:37:34,899 INFO L276 IsEmpty]: Start isEmpty. Operand has 73 states, 38 states have (on average 1.736842105263158) internal successors, (66), 59 states have internal predecessors, (66), 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 08:37:34,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-28 08:37:34,906 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:37:34,907 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:37:34,907 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting parse_inputErr0REQUIRES_VIOLATION === [c1Err0ASSERT_VIOLATIONMEMORY_FREE, c1Err1ASSERT_VIOLATIONMEMORY_FREE, c1Err2ASSERT_VIOLATIONMEMORY_FREE, c2Err0ASSERT_VIOLATIONMEMORY_FREE (and 16 more)] === [2021-10-28 08:37:34,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:37:34,913 INFO L85 PathProgramCache]: Analyzing trace with hash 1583989328, now seen corresponding path program 1 times [2021-10-28 08:37:34,922 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:37:34,922 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116767448] [2021-10-28 08:37:34,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:37:34,924 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:37:35,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:37:35,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 08:37:35,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:37:35,303 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 08:37:35,304 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:37:35,304 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116767448] [2021-10-28 08:37:35,305 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [116767448] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:37:35,305 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:37:35,306 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-28 08:37:35,307 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381391752] [2021-10-28 08:37:35,313 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 08:37:35,314 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:37:35,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 08:37:35,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 08:37:35,336 INFO L87 Difference]: Start difference. First operand has 73 states, 38 states have (on average 1.736842105263158) internal successors, (66), 59 states have internal predecessors, (66), 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 08:37:35,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:37:35,713 INFO L93 Difference]: Finished difference Result 105 states and 130 transitions. [2021-10-28 08:37:35,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 08:37:35,715 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 08:37:35,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:37:35,725 INFO L225 Difference]: With dead ends: 105 [2021-10-28 08:37:35,725 INFO L226 Difference]: Without dead ends: 96 [2021-10-28 08:37:35,726 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 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 08:37:35,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2021-10-28 08:37:35,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 92. [2021-10-28 08:37:35,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 50 states have (on average 1.52) internal successors, (76), 70 states have internal predecessors, (76), 12 states have call successors, (12), 7 states have call predecessors, (12), 12 states have return successors, (30), 14 states have call predecessors, (30), 11 states have call successors, (30) [2021-10-28 08:37:35,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 118 transitions. [2021-10-28 08:37:35,778 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 118 transitions. Word has length 9 [2021-10-28 08:37:35,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:37:35,778 INFO L470 AbstractCegarLoop]: Abstraction has 92 states and 118 transitions. [2021-10-28 08:37:35,779 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 08:37:35,779 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 118 transitions. [2021-10-28 08:37:35,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-28 08:37:35,780 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:37:35,780 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:37:35,781 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-28 08:37:35,781 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting parse_inputErr1REQUIRES_VIOLATION === [c1Err0ASSERT_VIOLATIONMEMORY_FREE, c1Err1ASSERT_VIOLATIONMEMORY_FREE, c1Err2ASSERT_VIOLATIONMEMORY_FREE, c2Err0ASSERT_VIOLATIONMEMORY_FREE (and 16 more)] === [2021-10-28 08:37:35,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:37:35,782 INFO L85 PathProgramCache]: Analyzing trace with hash 1583989329, now seen corresponding path program 1 times [2021-10-28 08:37:35,782 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:37:35,782 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020433208] [2021-10-28 08:37:35,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:37:35,783 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:37:35,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:37:35,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 08:37:35,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:37:35,987 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 08:37:35,988 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:37:35,988 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020433208] [2021-10-28 08:37:35,988 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2020433208] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:37:35,989 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:37:35,989 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 08:37:35,989 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727157473] [2021-10-28 08:37:35,990 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 08:37:35,991 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:37:35,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 08:37:35,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-28 08:37:35,992 INFO L87 Difference]: Start difference. First operand 92 states and 118 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 08:37:36,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:37:36,641 INFO L93 Difference]: Finished difference Result 176 states and 238 transitions. [2021-10-28 08:37:36,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-28 08:37:36,642 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 08:37:36,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:37:36,645 INFO L225 Difference]: With dead ends: 176 [2021-10-28 08:37:36,646 INFO L226 Difference]: Without dead ends: 176 [2021-10-28 08:37:36,646 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-10-28 08:37:36,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2021-10-28 08:37:36,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 145. [2021-10-28 08:37:36,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 92 states have (on average 1.5543478260869565) internal successors, (143), 112 states have internal predecessors, (143), 17 states have call successors, (17), 11 states have call predecessors, (17), 18 states have return successors, (51), 21 states have call predecessors, (51), 16 states have call successors, (51) [2021-10-28 08:37:36,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 211 transitions. [2021-10-28 08:37:36,669 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 211 transitions. Word has length 9 [2021-10-28 08:37:36,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:37:36,670 INFO L470 AbstractCegarLoop]: Abstraction has 145 states and 211 transitions. [2021-10-28 08:37:36,670 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 08:37:36,670 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 211 transitions. [2021-10-28 08:37:36,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-28 08:37:36,671 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:37:36,671 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:37:36,671 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-28 08:37:36,672 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE === [c1Err0ASSERT_VIOLATIONMEMORY_FREE, c1Err1ASSERT_VIOLATIONMEMORY_FREE, c1Err2ASSERT_VIOLATIONMEMORY_FREE, c2Err0ASSERT_VIOLATIONMEMORY_FREE (and 16 more)] === [2021-10-28 08:37:36,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:37:36,672 INFO L85 PathProgramCache]: Analyzing trace with hash 1859028932, now seen corresponding path program 1 times [2021-10-28 08:37:36,673 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:37:36,673 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225093579] [2021-10-28 08:37:36,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:37:36,673 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:37:36,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:37:36,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 08:37:36,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:37:37,006 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 08:37:37,007 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:37:37,007 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225093579] [2021-10-28 08:37:37,007 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [225093579] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:37:37,007 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:37:37,008 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 08:37:37,008 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843156557] [2021-10-28 08:37:37,008 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 08:37:37,008 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:37:37,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 08:37:37,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-28 08:37:37,010 INFO L87 Difference]: Start difference. First operand 145 states and 211 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 08:37:37,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:37:37,830 INFO L93 Difference]: Finished difference Result 270 states and 384 transitions. [2021-10-28 08:37:37,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-28 08:37:37,830 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 08:37:37,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:37:37,838 INFO L225 Difference]: With dead ends: 270 [2021-10-28 08:37:37,838 INFO L226 Difference]: Without dead ends: 270 [2021-10-28 08:37:37,838 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 08:37:37,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2021-10-28 08:37:37,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 219. [2021-10-28 08:37:37,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 151 states have (on average 1.5496688741721854) internal successors, (234), 172 states have internal predecessors, (234), 23 states have call successors, (23), 18 states have call predecessors, (23), 27 states have return successors, (67), 28 states have call predecessors, (67), 22 states have call successors, (67) [2021-10-28 08:37:37,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 324 transitions. [2021-10-28 08:37:37,890 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 324 transitions. Word has length 10 [2021-10-28 08:37:37,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:37:37,891 INFO L470 AbstractCegarLoop]: Abstraction has 219 states and 324 transitions. [2021-10-28 08:37:37,891 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 08:37:37,891 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 324 transitions. [2021-10-28 08:37:37,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-28 08:37:37,891 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:37:37,892 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:37:37,892 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-28 08:37:37,892 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting parse_inputErr3ASSERT_VIOLATIONMEMORY_DEREFERENCE === [c1Err0ASSERT_VIOLATIONMEMORY_FREE, c1Err1ASSERT_VIOLATIONMEMORY_FREE, c1Err2ASSERT_VIOLATIONMEMORY_FREE, c2Err0ASSERT_VIOLATIONMEMORY_FREE (and 16 more)] === [2021-10-28 08:37:37,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:37:37,893 INFO L85 PathProgramCache]: Analyzing trace with hash 1795322128, now seen corresponding path program 1 times [2021-10-28 08:37:37,893 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:37:37,893 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478321560] [2021-10-28 08:37:37,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:37:37,894 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:37:37,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:37:38,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 08:37:38,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:37:38,318 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 08:37:38,318 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:37:38,318 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478321560] [2021-10-28 08:37:38,319 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [478321560] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:37:38,319 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:37:38,319 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-28 08:37:38,319 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018240393] [2021-10-28 08:37:38,320 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 08:37:38,320 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:37:38,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 08:37:38,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-10-28 08:37:38,321 INFO L87 Difference]: Start difference. First operand 219 states and 324 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 08:37:39,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:37:39,247 INFO L93 Difference]: Finished difference Result 256 states and 361 transitions. [2021-10-28 08:37:39,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 08:37:39,248 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 08:37:39,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:37:39,251 INFO L225 Difference]: With dead ends: 256 [2021-10-28 08:37:39,251 INFO L226 Difference]: Without dead ends: 256 [2021-10-28 08:37:39,251 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2021-10-28 08:37:39,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2021-10-28 08:37:39,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 219. [2021-10-28 08:37:39,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 151 states have (on average 1.5364238410596027) internal successors, (232), 172 states have internal predecessors, (232), 23 states have call successors, (23), 18 states have call predecessors, (23), 27 states have return successors, (67), 28 states have call predecessors, (67), 22 states have call successors, (67) [2021-10-28 08:37:39,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 322 transitions. [2021-10-28 08:37:39,269 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 322 transitions. Word has length 11 [2021-10-28 08:37:39,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:37:39,270 INFO L470 AbstractCegarLoop]: Abstraction has 219 states and 322 transitions. [2021-10-28 08:37:39,270 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 08:37:39,270 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 322 transitions. [2021-10-28 08:37:39,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-28 08:37:39,271 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:37:39,271 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:37:39,271 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-28 08:37:39,271 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting parse_inputErr4ASSERT_VIOLATIONMEMORY_DEREFERENCE === [c1Err0ASSERT_VIOLATIONMEMORY_FREE, c1Err1ASSERT_VIOLATIONMEMORY_FREE, c1Err2ASSERT_VIOLATIONMEMORY_FREE, c2Err0ASSERT_VIOLATIONMEMORY_FREE (and 16 more)] === [2021-10-28 08:37:39,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:37:39,272 INFO L85 PathProgramCache]: Analyzing trace with hash -179588794, now seen corresponding path program 1 times [2021-10-28 08:37:39,272 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:37:39,272 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250558309] [2021-10-28 08:37:39,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:37:39,272 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:37:39,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:37:39,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 08:37:39,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:37:39,477 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 08:37:39,477 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:37:39,478 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250558309] [2021-10-28 08:37:39,478 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1250558309] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:37:39,479 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:37:39,479 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-28 08:37:39,481 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037436952] [2021-10-28 08:37:39,481 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 08:37:39,482 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:37:39,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 08:37:39,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-10-28 08:37:39,483 INFO L87 Difference]: Start difference. First operand 219 states and 322 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 08:37:40,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:37:40,269 INFO L93 Difference]: Finished difference Result 290 states and 395 transitions. [2021-10-28 08:37:40,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-28 08:37:40,270 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 08:37:40,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:37:40,273 INFO L225 Difference]: With dead ends: 290 [2021-10-28 08:37:40,274 INFO L226 Difference]: Without dead ends: 290 [2021-10-28 08:37:40,274 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 08:37:40,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2021-10-28 08:37:40,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 254. [2021-10-28 08:37:40,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 183 states have (on average 1.5245901639344261) internal successors, (279), 205 states have internal predecessors, (279), 24 states have call successors, (24), 19 states have call predecessors, (24), 29 states have return successors, (72), 29 states have call predecessors, (72), 23 states have call successors, (72) [2021-10-28 08:37:40,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 375 transitions. [2021-10-28 08:37:40,296 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 375 transitions. Word has length 12 [2021-10-28 08:37:40,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:37:40,297 INFO L470 AbstractCegarLoop]: Abstraction has 254 states and 375 transitions. [2021-10-28 08:37:40,297 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 08:37:40,297 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 375 transitions. [2021-10-28 08:37:40,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-28 08:37:40,297 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:37:40,298 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:37:40,298 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-28 08:37:40,298 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting parse_inputErr5ASSERT_VIOLATIONMEMORY_DEREFERENCE === [c1Err0ASSERT_VIOLATIONMEMORY_FREE, c1Err1ASSERT_VIOLATIONMEMORY_FREE, c1Err2ASSERT_VIOLATIONMEMORY_FREE, c2Err0ASSERT_VIOLATIONMEMORY_FREE (and 16 more)] === [2021-10-28 08:37:40,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:37:40,299 INFO L85 PathProgramCache]: Analyzing trace with hash -1272285230, now seen corresponding path program 1 times [2021-10-28 08:37:40,299 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:37:40,299 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238710425] [2021-10-28 08:37:40,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:37:40,300 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:37:40,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:37:40,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 08:37:40,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:37:40,504 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 08:37:40,504 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:37:40,504 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238710425] [2021-10-28 08:37:40,505 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238710425] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:37:40,505 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:37:40,505 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-28 08:37:40,505 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112797107] [2021-10-28 08:37:40,505 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 08:37:40,506 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:37:40,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 08:37:40,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-10-28 08:37:40,507 INFO L87 Difference]: Start difference. First operand 254 states and 375 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 08:37:41,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:37:41,275 INFO L93 Difference]: Finished difference Result 280 states and 383 transitions. [2021-10-28 08:37:41,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-28 08:37:41,276 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 08:37:41,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:37:41,279 INFO L225 Difference]: With dead ends: 280 [2021-10-28 08:37:41,279 INFO L226 Difference]: Without dead ends: 280 [2021-10-28 08:37:41,279 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 08:37:41,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2021-10-28 08:37:41,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 254. [2021-10-28 08:37:41,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 183 states have (on average 1.5136612021857923) internal successors, (277), 205 states have internal predecessors, (277), 24 states have call successors, (24), 19 states have call predecessors, (24), 29 states have return successors, (72), 29 states have call predecessors, (72), 23 states have call successors, (72) [2021-10-28 08:37:41,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 373 transitions. [2021-10-28 08:37:41,295 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 373 transitions. Word has length 13 [2021-10-28 08:37:41,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:37:41,296 INFO L470 AbstractCegarLoop]: Abstraction has 254 states and 373 transitions. [2021-10-28 08:37:41,296 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 08:37:41,296 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 373 transitions. [2021-10-28 08:37:41,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-28 08:37:41,297 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:37:41,297 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:37:41,297 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-28 08:37:41,297 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting parse_inputErr1REQUIRES_VIOLATION === [c1Err0ASSERT_VIOLATIONMEMORY_FREE, c1Err1ASSERT_VIOLATIONMEMORY_FREE, c1Err2ASSERT_VIOLATIONMEMORY_FREE, c2Err0ASSERT_VIOLATIONMEMORY_FREE (and 16 more)] === [2021-10-28 08:37:41,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:37:41,298 INFO L85 PathProgramCache]: Analyzing trace with hash 668439832, now seen corresponding path program 1 times [2021-10-28 08:37:41,298 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:37:41,298 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604457995] [2021-10-28 08:37:41,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:37:41,298 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:37:41,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:37:41,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 08:37:41,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:37:41,474 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 08:37:41,475 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:37:41,475 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604457995] [2021-10-28 08:37:41,475 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1604457995] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 08:37:41,475 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [938321655] [2021-10-28 08:37:41,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:37:41,476 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 08:37:41,476 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3575fc82-860b-435c-ba5b-2860696ab619/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:37:41,478 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3575fc82-860b-435c-ba5b-2860696ab619/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 08:37:41,501 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3575fc82-860b-435c-ba5b-2860696ab619/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-28 08:37:41,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:37:41,687 INFO L263 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-28 08:37:41,693 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:37:41,913 INFO L354 Elim1Store]: treesize reduction 240, result has 16.1 percent of original size [2021-10-28 08:37:41,914 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 08:37:42,186 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 08:37:42,186 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [938321655] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 08:37:42,186 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 08:37:42,187 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 7 [2021-10-28 08:37:42,187 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539824620] [2021-10-28 08:37:42,188 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-28 08:37:42,189 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:37:42,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-28 08:37:42,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-10-28 08:37:42,190 INFO L87 Difference]: Start difference. First operand 254 states and 373 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 08:37:43,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:37:43,062 INFO L93 Difference]: Finished difference Result 301 states and 422 transitions. [2021-10-28 08:37:43,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-28 08:37:43,063 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 08:37:43,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:37:43,066 INFO L225 Difference]: With dead ends: 301 [2021-10-28 08:37:43,066 INFO L226 Difference]: Without dead ends: 301 [2021-10-28 08:37:43,067 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 08:37:43,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2021-10-28 08:37:43,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 257. [2021-10-28 08:37:43,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257 states, 186 states have (on average 1.456989247311828) internal successors, (271), 208 states have internal predecessors, (271), 24 states have call successors, (24), 19 states have call predecessors, (24), 29 states have return successors, (72), 29 states have call predecessors, (72), 23 states have call successors, (72) [2021-10-28 08:37:43,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 367 transitions. [2021-10-28 08:37:43,088 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 367 transitions. Word has length 17 [2021-10-28 08:37:43,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:37:43,089 INFO L470 AbstractCegarLoop]: Abstraction has 257 states and 367 transitions. [2021-10-28 08:37:43,089 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 08:37:43,089 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 367 transitions. [2021-10-28 08:37:43,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-28 08:37:43,090 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:37:43,090 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:37:43,134 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3575fc82-860b-435c-ba5b-2860696ab619/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-28 08:37:43,305 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3575fc82-860b-435c-ba5b-2860696ab619/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 08:37:43,306 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE === [c1Err0ASSERT_VIOLATIONMEMORY_FREE, c1Err1ASSERT_VIOLATIONMEMORY_FREE, c1Err2ASSERT_VIOLATIONMEMORY_FREE, c2Err0ASSERT_VIOLATIONMEMORY_FREE (and 16 more)] === [2021-10-28 08:37:43,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:37:43,306 INFO L85 PathProgramCache]: Analyzing trace with hash -753201699, now seen corresponding path program 1 times [2021-10-28 08:37:43,306 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:37:43,307 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329636906] [2021-10-28 08:37:43,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:37:43,307 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:37:43,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:37:43,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 08:37:43,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:37:43,622 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 08:37:43,623 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:37:43,623 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329636906] [2021-10-28 08:37:43,623 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [329636906] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 08:37:43,623 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1633424279] [2021-10-28 08:37:43,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:37:43,624 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 08:37:43,624 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3575fc82-860b-435c-ba5b-2860696ab619/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:37:43,625 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3575fc82-860b-435c-ba5b-2860696ab619/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 08:37:43,637 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3575fc82-860b-435c-ba5b-2860696ab619/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-28 08:37:43,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:37:43,821 INFO L263 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-28 08:37:43,823 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:37:44,040 INFO L354 Elim1Store]: treesize reduction 497, result has 11.1 percent of original size [2021-10-28 08:37:44,040 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 82 treesize of output 116 [2021-10-28 08:37:54,012 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 94 treesize of output 70 [2021-10-28 08:37:54,599 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 08:37:54,600 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1633424279] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 08:37:54,600 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 08:37:54,600 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7] total 16 [2021-10-28 08:37:54,601 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339391685] [2021-10-28 08:37:54,604 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-28 08:37:54,604 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:37:54,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-28 08:37:54,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2021-10-28 08:37:54,607 INFO L87 Difference]: Start difference. First operand 257 states and 367 transitions. Second operand has 17 states, 16 states have (on average 1.75) internal successors, (28), 13 states have internal predecessors, (28), 3 states have call successors, (6), 6 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 08:38:46,631 WARN L207 SmtUtils]: Spent 11.12 s on a formula simplification. DAG size of input: 123 DAG size of output: 108 [2021-10-28 08:38:58,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:38:58,528 INFO L93 Difference]: Finished difference Result 321 states and 444 transitions. [2021-10-28 08:38:58,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-28 08:38:58,533 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 1.75) internal successors, (28), 13 states have internal predecessors, (28), 3 states have call successors, (6), 6 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 08:38:58,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:38:58,536 INFO L225 Difference]: With dead ends: 321 [2021-10-28 08:38:58,536 INFO L226 Difference]: Without dead ends: 321 [2021-10-28 08:38:58,537 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 217 ImplicationChecksByTransitivity, 29.1s TimeCoverageRelationStatistics Valid=251, Invalid=803, Unknown=2, NotChecked=0, Total=1056 [2021-10-28 08:38:58,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2021-10-28 08:38:58,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 263. [2021-10-28 08:38:58,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263 states, 192 states have (on average 1.4479166666666667) internal successors, (278), 214 states have internal predecessors, (278), 24 states have call successors, (24), 19 states have call predecessors, (24), 29 states have return successors, (72), 29 states have call predecessors, (72), 23 states have call successors, (72) [2021-10-28 08:38:58,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 374 transitions. [2021-10-28 08:38:58,558 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 374 transitions. Word has length 18 [2021-10-28 08:38:58,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:38:58,558 INFO L470 AbstractCegarLoop]: Abstraction has 263 states and 374 transitions. [2021-10-28 08:38:58,559 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 1.75) internal successors, (28), 13 states have internal predecessors, (28), 3 states have call successors, (6), 6 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 08:38:58,559 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 374 transitions. [2021-10-28 08:38:58,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-28 08:38:58,560 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:38:58,560 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:38:58,600 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3575fc82-860b-435c-ba5b-2860696ab619/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-10-28 08:38:58,786 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3575fc82-860b-435c-ba5b-2860696ab619/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2021-10-28 08:38:58,786 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting parse_inputErr3ASSERT_VIOLATIONMEMORY_DEREFERENCE === [c1Err0ASSERT_VIOLATIONMEMORY_FREE, c1Err1ASSERT_VIOLATIONMEMORY_FREE, c1Err2ASSERT_VIOLATIONMEMORY_FREE, c2Err0ASSERT_VIOLATIONMEMORY_FREE (and 16 more)] === [2021-10-28 08:38:58,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:38:58,787 INFO L85 PathProgramCache]: Analyzing trace with hash -1874416105, now seen corresponding path program 1 times [2021-10-28 08:38:58,787 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:38:58,787 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591481510] [2021-10-28 08:38:58,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:38:58,788 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:38:58,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:38:59,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 08:38:59,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:38:59,320 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 08:38:59,320 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:38:59,320 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591481510] [2021-10-28 08:38:59,320 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1591481510] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 08:38:59,321 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [783749251] [2021-10-28 08:38:59,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:38:59,321 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 08:38:59,321 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3575fc82-860b-435c-ba5b-2860696ab619/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:38:59,322 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3575fc82-860b-435c-ba5b-2860696ab619/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 08:38:59,327 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3575fc82-860b-435c-ba5b-2860696ab619/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-28 08:38:59,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:38:59,609 INFO L263 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-28 08:38:59,611 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:38:59,783 INFO L354 Elim1Store]: treesize reduction 354, result has 14.1 percent of original size [2021-10-28 08:38:59,784 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 51 treesize of output 86 [2021-10-28 08:38:59,799 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 114 treesize of output 112 [2021-10-28 08:39:04,120 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 99 treesize of output 75 [2021-10-28 08:39:04,126 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 72 treesize of output 60 [2021-10-28 08:39:05,559 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 08:39:05,560 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [783749251] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 08:39:05,560 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 08:39:05,560 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5] total 12 [2021-10-28 08:39:05,560 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629840956] [2021-10-28 08:39:05,561 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-28 08:39:05,561 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:39:05,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-28 08:39:05,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2021-10-28 08:39:05,562 INFO L87 Difference]: Start difference. First operand 263 states and 374 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 08:39:07,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:39:07,749 INFO L93 Difference]: Finished difference Result 310 states and 433 transitions. [2021-10-28 08:39:07,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-28 08:39:07,750 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 08:39:07,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:39:07,753 INFO L225 Difference]: With dead ends: 310 [2021-10-28 08:39:07,753 INFO L226 Difference]: Without dead ends: 310 [2021-10-28 08:39:07,754 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=94, Invalid=248, Unknown=0, NotChecked=0, Total=342 [2021-10-28 08:39:07,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2021-10-28 08:39:07,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 263. [2021-10-28 08:39:07,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263 states, 192 states have (on average 1.4322916666666667) internal successors, (275), 214 states have internal predecessors, (275), 24 states have call successors, (24), 19 states have call predecessors, (24), 29 states have return successors, (72), 29 states have call predecessors, (72), 23 states have call successors, (72) [2021-10-28 08:39:07,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 371 transitions. [2021-10-28 08:39:07,773 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 371 transitions. Word has length 19 [2021-10-28 08:39:07,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:39:07,773 INFO L470 AbstractCegarLoop]: Abstraction has 263 states and 371 transitions. [2021-10-28 08:39:07,773 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 08:39:07,774 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 371 transitions. [2021-10-28 08:39:07,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-28 08:39:07,775 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:39:07,775 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 08:39:07,823 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3575fc82-860b-435c-ba5b-2860696ab619/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-28 08:39:08,002 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3575fc82-860b-435c-ba5b-2860696ab619/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 08:39:08,002 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting c2Err0ASSERT_VIOLATIONMEMORY_FREE === [c1Err0ASSERT_VIOLATIONMEMORY_FREE, c1Err1ASSERT_VIOLATIONMEMORY_FREE, c1Err2ASSERT_VIOLATIONMEMORY_FREE, c2Err0ASSERT_VIOLATIONMEMORY_FREE (and 16 more)] === [2021-10-28 08:39:08,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:39:08,003 INFO L85 PathProgramCache]: Analyzing trace with hash 550421903, now seen corresponding path program 1 times [2021-10-28 08:39:08,003 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:39:08,003 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574286368] [2021-10-28 08:39:08,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:39:08,003 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:39:08,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:39:08,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 08:39:08,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:39:08,166 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 08:39:08,167 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:39:08,167 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574286368] [2021-10-28 08:39:08,167 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1574286368] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:39:08,167 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:39:08,168 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 08:39:08,168 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072384696] [2021-10-28 08:39:08,168 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 08:39:08,168 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:39:08,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 08:39:08,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 08:39:08,170 INFO L87 Difference]: Start difference. First operand 263 states and 371 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 08:39:08,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:39:08,622 INFO L93 Difference]: Finished difference Result 259 states and 336 transitions. [2021-10-28 08:39:08,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 08:39:08,623 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 08:39:08,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:39:08,625 INFO L225 Difference]: With dead ends: 259 [2021-10-28 08:39:08,625 INFO L226 Difference]: Without dead ends: 259 [2021-10-28 08:39:08,626 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 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 08:39:08,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2021-10-28 08:39:08,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 243. [2021-10-28 08:39:08,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 178 states have (on average 1.4382022471910112) internal successors, (256), 200 states have internal predecessors, (256), 22 states have call successors, (22), 18 states have call predecessors, (22), 25 states have return successors, (49), 24 states have call predecessors, (49), 21 states have call successors, (49) [2021-10-28 08:39:08,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 327 transitions. [2021-10-28 08:39:08,639 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 327 transitions. Word has length 23 [2021-10-28 08:39:08,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:39:08,639 INFO L470 AbstractCegarLoop]: Abstraction has 243 states and 327 transitions. [2021-10-28 08:39:08,640 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 08:39:08,640 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 327 transitions. [2021-10-28 08:39:08,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-10-28 08:39:08,641 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:39:08,642 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 08:39:08,642 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-10-28 08:39:08,642 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting parse_inputErr1REQUIRES_VIOLATION === [c1Err0ASSERT_VIOLATIONMEMORY_FREE, c1Err1ASSERT_VIOLATIONMEMORY_FREE, c1Err2ASSERT_VIOLATIONMEMORY_FREE, c2Err0ASSERT_VIOLATIONMEMORY_FREE (and 16 more)] === [2021-10-28 08:39:08,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:39:08,643 INFO L85 PathProgramCache]: Analyzing trace with hash 2138371761, now seen corresponding path program 1 times [2021-10-28 08:39:08,643 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:39:08,643 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555697704] [2021-10-28 08:39:08,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:39:08,643 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:39:08,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:39:08,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 08:39:08,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:39:08,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-10-28 08:39:08,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:39:08,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-10-28 08:39:08,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:39:08,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-10-28 08:39:08,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:39:08,835 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 08:39:08,835 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:39:08,835 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555697704] [2021-10-28 08:39:08,835 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1555697704] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:39:08,836 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:39:08,836 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-28 08:39:08,836 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140993226] [2021-10-28 08:39:08,837 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 08:39:08,837 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:39:08,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 08:39:08,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-28 08:39:08,838 INFO L87 Difference]: Start difference. First operand 243 states and 327 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 08:39:09,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:39:09,082 INFO L93 Difference]: Finished difference Result 204 states and 259 transitions. [2021-10-28 08:39:09,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 08:39:09,083 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 08:39:09,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:39:09,085 INFO L225 Difference]: With dead ends: 204 [2021-10-28 08:39:09,085 INFO L226 Difference]: Without dead ends: 204 [2021-10-28 08:39:09,085 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 08:39:09,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2021-10-28 08:39:09,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 199. [2021-10-28 08:39:09,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 144 states have (on average 1.4097222222222223) internal successors, (203), 165 states have internal predecessors, (203), 18 states have call successors, (18), 15 states have call predecessors, (18), 19 states have return successors, (33), 18 states have call predecessors, (33), 17 states have call successors, (33) [2021-10-28 08:39:09,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 254 transitions. [2021-10-28 08:39:09,095 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 254 transitions. Word has length 33 [2021-10-28 08:39:09,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:39:09,096 INFO L470 AbstractCegarLoop]: Abstraction has 199 states and 254 transitions. [2021-10-28 08:39:09,096 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 08:39:09,096 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 254 transitions. [2021-10-28 08:39:09,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-10-28 08:39:09,098 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:39:09,098 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 08:39:09,098 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-10-28 08:39:09,098 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting parse_inputErr4ASSERT_VIOLATIONMEMORY_DEREFERENCE === [c1Err0ASSERT_VIOLATIONMEMORY_FREE, c1Err1ASSERT_VIOLATIONMEMORY_FREE, c1Err2ASSERT_VIOLATIONMEMORY_FREE, c2Err0ASSERT_VIOLATIONMEMORY_FREE (and 16 more)] === [2021-10-28 08:39:09,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:39:09,099 INFO L85 PathProgramCache]: Analyzing trace with hash -138461554, now seen corresponding path program 1 times [2021-10-28 08:39:09,099 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:39:09,099 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388044756] [2021-10-28 08:39:09,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:39:09,099 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:39:09,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:39:09,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 08:39:09,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:39:09,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-10-28 08:39:09,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:39:09,332 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 08:39:09,332 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:39:09,332 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388044756] [2021-10-28 08:39:09,332 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [388044756] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 08:39:09,333 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1918345970] [2021-10-28 08:39:09,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:39:09,333 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 08:39:09,333 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3575fc82-860b-435c-ba5b-2860696ab619/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:39:09,334 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3575fc82-860b-435c-ba5b-2860696ab619/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 08:39:09,346 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3575fc82-860b-435c-ba5b-2860696ab619/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-10-28 08:39:09,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:39:09,683 INFO L263 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-28 08:39:09,686 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:39:09,927 INFO L354 Elim1Store]: treesize reduction 365, result has 12.0 percent of original size [2021-10-28 08:39:09,928 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 08:39:12,251 INFO L354 Elim1Store]: treesize reduction 120, result has 29.0 percent of original size [2021-10-28 08:39:12,251 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 08:39:15,891 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 08:39:15,891 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1918345970] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 08:39:15,891 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 08:39:15,891 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5] total 11 [2021-10-28 08:39:15,891 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941891540] [2021-10-28 08:39:15,892 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-28 08:39:15,892 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:39:15,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-28 08:39:15,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-10-28 08:39:15,893 INFO L87 Difference]: Start difference. First operand 199 states and 254 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 08:39:37,519 WARN L207 SmtUtils]: Spent 12.57 s on a formula simplification that was a NOOP. DAG size: 97 [2021-10-28 08:39:49,218 WARN L228 Executor]: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3575fc82-860b-435c-ba5b-2860696ab619/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 08:39:49,219 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3575fc82-860b-435c-ba5b-2860696ab619/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 101 [2021-10-28 08:39:49,242 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3575fc82-860b-435c-ba5b-2860696ab619/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-10-28 08:39:49,420 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3575fc82-860b-435c-ba5b-2860696ab619/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-10-28 08:39:49,421 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_3575fc82-860b-435c-ba5b-2860696ab619/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 08:39:49,426 INFO L168 Benchmark]: Toolchain (without parser) took 136043.12 ms. Allocated memory was 86.0 MB in the beginning and 222.3 MB in the end (delta: 136.3 MB). Free memory was 61.8 MB in the beginning and 136.6 MB in the end (delta: -74.8 MB). Peak memory consumption was 60.7 MB. Max. memory is 16.1 GB. [2021-10-28 08:39:49,426 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 86.0 MB. Free memory was 60.8 MB in the beginning and 60.8 MB in the end (delta: 38.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 08:39:49,426 INFO L168 Benchmark]: CACSL2BoogieTranslator took 536.17 ms. Allocated memory was 86.0 MB in the beginning and 125.8 MB in the end (delta: 39.8 MB). Free memory was 61.5 MB in the beginning and 86.0 MB in the end (delta: -24.5 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-28 08:39:49,427 INFO L168 Benchmark]: Boogie Preprocessor took 70.79 ms. Allocated memory is still 125.8 MB. Free memory was 86.0 MB in the beginning and 82.9 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-28 08:39:49,427 INFO L168 Benchmark]: RCFGBuilder took 806.33 ms. Allocated memory is still 125.8 MB. Free memory was 82.9 MB in the beginning and 57.2 MB in the end (delta: 25.7 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.1 GB. [2021-10-28 08:39:49,427 INFO L168 Benchmark]: TraceAbstraction took 134615.69 ms. Allocated memory was 125.8 MB in the beginning and 222.3 MB in the end (delta: 96.5 MB). Free memory was 56.5 MB in the beginning and 136.6 MB in the end (delta: -80.2 MB). Peak memory consumption was 18.3 MB. Max. memory is 16.1 GB. [2021-10-28 08:39:49,429 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 86.0 MB. Free memory was 60.8 MB in the beginning and 60.8 MB in the end (delta: 38.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 536.17 ms. Allocated memory was 86.0 MB in the beginning and 125.8 MB in the end (delta: 39.8 MB). Free memory was 61.5 MB in the beginning and 86.0 MB in the end (delta: -24.5 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 70.79 ms. Allocated memory is still 125.8 MB. Free memory was 86.0 MB in the beginning and 82.9 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 806.33 ms. Allocated memory is still 125.8 MB. Free memory was 82.9 MB in the beginning and 57.2 MB in the end (delta: 25.7 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 134615.69 ms. Allocated memory was 125.8 MB in the beginning and 222.3 MB in the end (delta: 96.5 MB). Free memory was 56.5 MB in the beginning and 136.6 MB in the end (delta: -80.2 MB). Peak memory consumption was 18.3 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_3575fc82-860b-435c-ba5b-2860696ab619/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_3575fc82-860b-435c-ba5b-2860696ab619/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 08:39:51,580 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 08:39:51,583 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 08:39:51,626 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 08:39:51,627 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 08:39:51,631 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 08:39:51,633 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 08:39:51,639 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 08:39:51,642 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 08:39:51,648 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 08:39:51,649 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 08:39:51,651 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 08:39:51,651 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 08:39:51,654 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 08:39:51,656 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 08:39:51,660 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 08:39:51,662 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 08:39:51,670 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 08:39:51,672 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 08:39:51,676 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 08:39:51,677 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 08:39:51,679 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 08:39:51,680 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 08:39:51,681 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 08:39:51,684 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 08:39:51,684 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 08:39:51,685 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 08:39:51,686 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 08:39:51,686 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 08:39:51,687 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 08:39:51,688 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 08:39:51,689 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 08:39:51,689 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 08:39:51,690 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 08:39:51,692 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 08:39:51,692 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 08:39:51,693 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 08:39:51,693 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 08:39:51,694 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 08:39:51,695 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 08:39:51,696 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 08:39:51,697 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3575fc82-860b-435c-ba5b-2860696ab619/bin/uautomizer-UnR33cPsHg/config/svcomp-MemCleanup-32bit-Automizer_Bitvector.epf [2021-10-28 08:39:51,726 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 08:39:51,728 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 08:39:51,729 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 08:39:51,730 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 08:39:51,731 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 08:39:51,732 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 08:39:51,732 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 08:39:51,733 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 08:39:51,733 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 08:39:51,733 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-28 08:39:51,734 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 08:39:51,735 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 08:39:51,735 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 08:39:51,735 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-28 08:39:51,735 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-28 08:39:51,736 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 08:39:51,736 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-28 08:39:51,736 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-28 08:39:51,736 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-28 08:39:51,736 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 08:39:51,737 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 08:39:51,737 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 08:39:51,737 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 08:39:51,737 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 08:39:51,737 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 08:39:51,738 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 08:39:51,738 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 08:39:51,738 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-28 08:39:51,739 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-28 08:39:51,739 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 08:39:51,739 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-28 08:39:51,739 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_3575fc82-860b-435c-ba5b-2860696ab619/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3575fc82-860b-435c-ba5b-2860696ab619/bin/uautomizer-UnR33cPsHg Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7c883b81b24ce5a721aa9a1ff13aef8a0d532ba87d9e130e470a0b88a1f8e93e [2021-10-28 08:39:52,140 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 08:39:52,174 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 08:39:52,178 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 08:39:52,180 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 08:39:52,180 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 08:39:52,181 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3575fc82-860b-435c-ba5b-2860696ab619/bin/uautomizer-UnR33cPsHg/../../sv-benchmarks/c/memsafety-bftpd/bftpd_2.i [2021-10-28 08:39:52,253 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3575fc82-860b-435c-ba5b-2860696ab619/bin/uautomizer-UnR33cPsHg/data/2ed0680b6/fa062d4b1fea4c6ebf40a9578da85d23/FLAG5d15a20a7 [2021-10-28 08:39:52,861 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 08:39:52,861 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3575fc82-860b-435c-ba5b-2860696ab619/sv-benchmarks/c/memsafety-bftpd/bftpd_2.i [2021-10-28 08:39:52,878 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3575fc82-860b-435c-ba5b-2860696ab619/bin/uautomizer-UnR33cPsHg/data/2ed0680b6/fa062d4b1fea4c6ebf40a9578da85d23/FLAG5d15a20a7 [2021-10-28 08:39:53,258 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3575fc82-860b-435c-ba5b-2860696ab619/bin/uautomizer-UnR33cPsHg/data/2ed0680b6/fa062d4b1fea4c6ebf40a9578da85d23 [2021-10-28 08:39:53,262 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 08:39:53,263 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-28 08:39:53,265 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 08:39:53,268 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 08:39:53,271 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 08:39:53,272 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 08:39:53" (1/1) ... [2021-10-28 08:39:53,273 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b1286f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:39:53, skipping insertion in model container [2021-10-28 08:39:53,274 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 08:39:53" (1/1) ... [2021-10-28 08:39:53,281 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 08:39:53,337 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 08:39:53,674 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 08:39:53,691 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 08:39:53,768 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 08:39:53,845 INFO L208 MainTranslator]: Completed translation [2021-10-28 08:39:53,845 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:39:53 WrapperNode [2021-10-28 08:39:53,846 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 08:39:53,847 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 08:39:53,847 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 08:39:53,849 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 08:39:53,860 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:39:53" (1/1) ... [2021-10-28 08:39:53,860 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:39:53" (1/1) ... [2021-10-28 08:39:53,896 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:39:53" (1/1) ... [2021-10-28 08:39:53,897 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:39:53" (1/1) ... [2021-10-28 08:39:53,937 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:39:53" (1/1) ... [2021-10-28 08:39:53,942 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:39:53" (1/1) ... [2021-10-28 08:39:53,955 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:39:53" (1/1) ... [2021-10-28 08:39:53,977 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 08:39:53,978 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 08:39:53,978 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 08:39:53,978 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 08:39:53,979 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:39:53" (1/1) ... [2021-10-28 08:39:53,994 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 08:39:54,007 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3575fc82-860b-435c-ba5b-2860696ab619/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:39:54,023 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3575fc82-860b-435c-ba5b-2860696ab619/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 08:39:54,040 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3575fc82-860b-435c-ba5b-2860696ab619/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 08:39:54,070 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-10-28 08:39:54,070 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 08:39:54,071 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~~TO~VOID [2021-10-28 08:39:54,071 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2021-10-28 08:39:54,071 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-10-28 08:39:54,071 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-10-28 08:39:54,071 INFO L138 BoogieDeclarations]: Found implementation of procedure parse_input [2021-10-28 08:39:54,072 INFO L138 BoogieDeclarations]: Found implementation of procedure c1 [2021-10-28 08:39:54,072 INFO L138 BoogieDeclarations]: Found implementation of procedure c2 [2021-10-28 08:39:54,072 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-10-28 08:39:54,072 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-10-28 08:39:54,073 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-10-28 08:39:54,073 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-10-28 08:39:54,073 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-10-28 08:39:54,073 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-10-28 08:39:54,073 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-10-28 08:39:54,074 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-10-28 08:39:54,074 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-10-28 08:39:54,074 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-10-28 08:39:54,074 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-10-28 08:39:54,074 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-10-28 08:39:54,075 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-10-28 08:39:54,075 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-10-28 08:39:54,075 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-10-28 08:39:54,075 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-10-28 08:39:54,075 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-10-28 08:39:54,076 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-10-28 08:39:54,076 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-10-28 08:39:54,076 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-10-28 08:39:54,076 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-10-28 08:39:54,076 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-10-28 08:39:54,077 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-10-28 08:39:54,077 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-10-28 08:39:54,077 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-10-28 08:39:54,077 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-10-28 08:39:54,077 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-10-28 08:39:54,078 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-10-28 08:39:54,078 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-10-28 08:39:54,078 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-10-28 08:39:54,078 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-10-28 08:39:54,078 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-10-28 08:39:54,079 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-10-28 08:39:54,079 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-10-28 08:39:54,079 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-10-28 08:39:54,079 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-10-28 08:39:54,080 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-10-28 08:39:54,080 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-10-28 08:39:54,080 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-10-28 08:39:54,080 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-10-28 08:39:54,081 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-10-28 08:39:54,081 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-10-28 08:39:54,081 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-10-28 08:39:54,081 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-10-28 08:39:54,081 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-10-28 08:39:54,082 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-10-28 08:39:54,082 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-10-28 08:39:54,082 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-10-28 08:39:54,082 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-10-28 08:39:54,083 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-10-28 08:39:54,083 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-10-28 08:39:54,083 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-10-28 08:39:54,083 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-10-28 08:39:54,084 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-10-28 08:39:54,084 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-10-28 08:39:54,084 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-10-28 08:39:54,084 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-10-28 08:39:54,084 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2021-10-28 08:39:54,085 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-10-28 08:39:54,085 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-10-28 08:39:54,085 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-10-28 08:39:54,085 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-10-28 08:39:54,086 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-10-28 08:39:54,086 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-10-28 08:39:54,086 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-10-28 08:39:54,086 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-10-28 08:39:54,087 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-10-28 08:39:54,087 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-10-28 08:39:54,087 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-10-28 08:39:54,087 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-10-28 08:39:54,087 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-10-28 08:39:54,088 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-10-28 08:39:54,088 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-10-28 08:39:54,088 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-10-28 08:39:54,088 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-10-28 08:39:54,089 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-10-28 08:39:54,089 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-10-28 08:39:54,089 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-10-28 08:39:54,089 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-10-28 08:39:54,089 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-10-28 08:39:54,090 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-10-28 08:39:54,090 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-10-28 08:39:54,090 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-10-28 08:39:54,090 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-10-28 08:39:54,090 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-10-28 08:39:54,091 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-10-28 08:39:54,091 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-10-28 08:39:54,091 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-10-28 08:39:54,091 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-10-28 08:39:54,091 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-10-28 08:39:54,091 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-10-28 08:39:54,092 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-10-28 08:39:54,092 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-10-28 08:39:54,092 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-10-28 08:39:54,092 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-10-28 08:39:54,092 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-10-28 08:39:54,093 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-10-28 08:39:54,093 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-10-28 08:39:54,093 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-10-28 08:39:54,093 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-10-28 08:39:54,093 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-10-28 08:39:54,093 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-10-28 08:39:54,094 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-10-28 08:39:54,094 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-10-28 08:39:54,094 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-10-28 08:39:54,094 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-10-28 08:39:54,094 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2021-10-28 08:39:54,095 INFO L130 BoogieDeclarations]: Found specification of procedure memmove [2021-10-28 08:39:54,095 INFO L130 BoogieDeclarations]: Found specification of procedure memccpy [2021-10-28 08:39:54,095 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2021-10-28 08:39:54,095 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-10-28 08:39:54,095 INFO L130 BoogieDeclarations]: Found specification of procedure memchr [2021-10-28 08:39:54,095 INFO L130 BoogieDeclarations]: Found specification of procedure strcpy [2021-10-28 08:39:54,096 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2021-10-28 08:39:54,096 INFO L130 BoogieDeclarations]: Found specification of procedure strcat [2021-10-28 08:39:54,096 INFO L130 BoogieDeclarations]: Found specification of procedure strncat [2021-10-28 08:39:54,096 INFO L130 BoogieDeclarations]: Found specification of procedure strcmp [2021-10-28 08:39:54,096 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2021-10-28 08:39:54,097 INFO L130 BoogieDeclarations]: Found specification of procedure strcoll [2021-10-28 08:39:54,097 INFO L130 BoogieDeclarations]: Found specification of procedure strxfrm [2021-10-28 08:39:54,097 INFO L130 BoogieDeclarations]: Found specification of procedure strcoll_l [2021-10-28 08:39:54,097 INFO L130 BoogieDeclarations]: Found specification of procedure strxfrm_l [2021-10-28 08:39:54,097 INFO L130 BoogieDeclarations]: Found specification of procedure strdup [2021-10-28 08:39:54,097 INFO L130 BoogieDeclarations]: Found specification of procedure strndup [2021-10-28 08:39:54,098 INFO L130 BoogieDeclarations]: Found specification of procedure strchr [2021-10-28 08:39:54,098 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2021-10-28 08:39:54,098 INFO L130 BoogieDeclarations]: Found specification of procedure strcspn [2021-10-28 08:39:54,098 INFO L130 BoogieDeclarations]: Found specification of procedure strspn [2021-10-28 08:39:54,098 INFO L130 BoogieDeclarations]: Found specification of procedure strpbrk [2021-10-28 08:39:54,099 INFO L130 BoogieDeclarations]: Found specification of procedure strstr [2021-10-28 08:39:54,099 INFO L130 BoogieDeclarations]: Found specification of procedure strtok [2021-10-28 08:39:54,099 INFO L130 BoogieDeclarations]: Found specification of procedure __strtok_r [2021-10-28 08:39:54,099 INFO L130 BoogieDeclarations]: Found specification of procedure strtok_r [2021-10-28 08:39:54,099 INFO L130 BoogieDeclarations]: Found specification of procedure strlen [2021-10-28 08:39:54,099 INFO L130 BoogieDeclarations]: Found specification of procedure strnlen [2021-10-28 08:39:54,100 INFO L130 BoogieDeclarations]: Found specification of procedure strerror [2021-10-28 08:39:54,100 INFO L130 BoogieDeclarations]: Found specification of procedure strerror_r [2021-10-28 08:39:54,100 INFO L130 BoogieDeclarations]: Found specification of procedure strerror_l [2021-10-28 08:39:54,100 INFO L130 BoogieDeclarations]: Found specification of procedure __bzero [2021-10-28 08:39:54,100 INFO L130 BoogieDeclarations]: Found specification of procedure bcopy [2021-10-28 08:39:54,100 INFO L130 BoogieDeclarations]: Found specification of procedure bzero [2021-10-28 08:39:54,101 INFO L130 BoogieDeclarations]: Found specification of procedure bcmp [2021-10-28 08:39:54,101 INFO L130 BoogieDeclarations]: Found specification of procedure index [2021-10-28 08:39:54,101 INFO L130 BoogieDeclarations]: Found specification of procedure rindex [2021-10-28 08:39:54,101 INFO L130 BoogieDeclarations]: Found specification of procedure ffs [2021-10-28 08:39:54,101 INFO L130 BoogieDeclarations]: Found specification of procedure strcasecmp [2021-10-28 08:39:54,101 INFO L130 BoogieDeclarations]: Found specification of procedure strncasecmp [2021-10-28 08:39:54,101 INFO L130 BoogieDeclarations]: Found specification of procedure strsep [2021-10-28 08:39:54,102 INFO L130 BoogieDeclarations]: Found specification of procedure strsignal [2021-10-28 08:39:54,102 INFO L130 BoogieDeclarations]: Found specification of procedure __stpcpy [2021-10-28 08:39:54,102 INFO L130 BoogieDeclarations]: Found specification of procedure stpcpy [2021-10-28 08:39:54,102 INFO L130 BoogieDeclarations]: Found specification of procedure __stpncpy [2021-10-28 08:39:54,102 INFO L130 BoogieDeclarations]: Found specification of procedure stpncpy [2021-10-28 08:39:54,103 INFO L130 BoogieDeclarations]: Found specification of procedure c1 [2021-10-28 08:39:54,103 INFO L130 BoogieDeclarations]: Found specification of procedure c2 [2021-10-28 08:39:54,103 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 08:39:54,103 INFO L130 BoogieDeclarations]: Found specification of procedure parse_input [2021-10-28 08:39:54,103 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~~TO~VOID [2021-10-28 08:39:54,103 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-28 08:39:54,104 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-10-28 08:39:54,104 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-28 08:39:54,104 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-28 08:39:54,104 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-10-28 08:39:54,104 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-10-28 08:39:54,104 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-28 08:39:54,104 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-10-28 08:39:54,105 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 08:39:54,105 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2021-10-28 08:39:54,105 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-28 08:39:54,105 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-10-28 08:39:54,801 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 08:39:54,801 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-10-28 08:39:54,803 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 08:39:54 BoogieIcfgContainer [2021-10-28 08:39:54,803 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 08:39:54,805 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 08:39:54,805 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 08:39:54,808 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 08:39:54,808 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 08:39:53" (1/3) ... [2021-10-28 08:39:54,809 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1482730c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 08:39:54, skipping insertion in model container [2021-10-28 08:39:54,809 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:39:53" (2/3) ... [2021-10-28 08:39:54,809 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1482730c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 08:39:54, skipping insertion in model container [2021-10-28 08:39:54,809 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 08:39:54" (3/3) ... [2021-10-28 08:39:54,811 INFO L111 eAbstractionObserver]: Analyzing ICFG bftpd_2.i [2021-10-28 08:39:54,815 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 08:39:54,816 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 20 error locations. [2021-10-28 08:39:54,880 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 08:39:54,888 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 08:39:54,888 INFO L340 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2021-10-28 08:39:54,912 INFO L276 IsEmpty]: Start isEmpty. Operand has 73 states, 38 states have (on average 1.736842105263158) internal successors, (66), 59 states have internal predecessors, (66), 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 08:39:54,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-28 08:39:54,932 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:39:54,932 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:39:54,933 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting parse_inputErr0REQUIRES_VIOLATION === [c1Err0ASSERT_VIOLATIONMEMORY_FREE, c1Err1ASSERT_VIOLATIONMEMORY_FREE, c1Err2ASSERT_VIOLATIONMEMORY_FREE, c2Err0ASSERT_VIOLATIONMEMORY_FREE (and 16 more)] === [2021-10-28 08:39:54,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:39:54,940 INFO L85 PathProgramCache]: Analyzing trace with hash -1137100954, now seen corresponding path program 1 times [2021-10-28 08:39:54,950 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 08:39:54,951 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [98474134] [2021-10-28 08:39:54,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:39:54,952 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 08:39:54,952 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3575fc82-860b-435c-ba5b-2860696ab619/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 08:39:54,955 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3575fc82-860b-435c-ba5b-2860696ab619/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 08:39:54,967 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3575fc82-860b-435c-ba5b-2860696ab619/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-28 08:39:55,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:39:55,221 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-28 08:39:55,228 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:39:55,584 INFO L354 Elim1Store]: treesize reduction 351, result has 15.4 percent of original size [2021-10-28 08:39:55,585 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 08:39:56,510 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 08:39:56,510 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 08:39:56,576 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 08:39:56,577 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 08:39:56,577 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [98474134] [2021-10-28 08:39:56,578 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [98474134] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 08:39:56,578 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:39:56,579 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-28 08:39:56,581 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886865894] [2021-10-28 08:39:56,586 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 08:39:56,586 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 08:39:56,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 08:39:56,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 08:39:56,604 INFO L87 Difference]: Start difference. First operand has 73 states, 38 states have (on average 1.736842105263158) internal successors, (66), 59 states have internal predecessors, (66), 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 08:39:56,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:39:56,758 INFO L93 Difference]: Finished difference Result 93 states and 107 transitions. [2021-10-28 08:39:56,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 08:39:56,761 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 08:39:56,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:39:56,772 INFO L225 Difference]: With dead ends: 93 [2021-10-28 08:39:56,773 INFO L226 Difference]: Without dead ends: 87 [2021-10-28 08:39:56,775 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 08:39:56,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2021-10-28 08:39:56,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 83. [2021-10-28 08:39:56,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 46 states have (on average 1.565217391304348) internal successors, (72), 65 states have internal predecessors, (72), 10 states have call successors, (10), 7 states have call predecessors, (10), 9 states have return successors, (17), 10 states have call predecessors, (17), 9 states have call successors, (17) [2021-10-28 08:39:56,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 99 transitions. [2021-10-28 08:39:56,850 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 99 transitions. Word has length 9 [2021-10-28 08:39:56,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:39:56,850 INFO L470 AbstractCegarLoop]: Abstraction has 83 states and 99 transitions. [2021-10-28 08:39:56,850 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 08:39:56,850 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 99 transitions. [2021-10-28 08:39:56,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-28 08:39:56,852 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:39:56,852 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:39:56,862 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3575fc82-860b-435c-ba5b-2860696ab619/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-28 08:39:57,062 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3575fc82-860b-435c-ba5b-2860696ab619/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 08:39:57,063 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting parse_inputErr1REQUIRES_VIOLATION === [c1Err0ASSERT_VIOLATIONMEMORY_FREE, c1Err1ASSERT_VIOLATIONMEMORY_FREE, c1Err2ASSERT_VIOLATIONMEMORY_FREE, c2Err0ASSERT_VIOLATIONMEMORY_FREE (and 16 more)] === [2021-10-28 08:39:57,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:39:57,064 INFO L85 PathProgramCache]: Analyzing trace with hash -1137100953, now seen corresponding path program 1 times [2021-10-28 08:39:57,064 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 08:39:57,065 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1759280533] [2021-10-28 08:39:57,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:39:57,065 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 08:39:57,065 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3575fc82-860b-435c-ba5b-2860696ab619/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 08:39:57,068 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3575fc82-860b-435c-ba5b-2860696ab619/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 08:39:57,079 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3575fc82-860b-435c-ba5b-2860696ab619/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-28 08:39:57,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:39:57,327 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-28 08:39:57,329 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:39:57,542 INFO L354 Elim1Store]: treesize reduction 240, result has 16.1 percent of original size [2021-10-28 08:39:57,542 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 08:39:57,659 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 08:39:57,659 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 08:39:57,990 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 08:39:57,991 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 08:39:57,991 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1759280533] [2021-10-28 08:39:57,991 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1759280533] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 08:39:57,991 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:39:57,991 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-10-28 08:39:57,992 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883310749] [2021-10-28 08:39:57,993 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 08:39:57,993 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 08:39:57,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 08:39:57,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-28 08:39:57,994 INFO L87 Difference]: Start difference. First operand 83 states and 99 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 08:39:58,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:39:58,637 INFO L93 Difference]: Finished difference Result 172 states and 231 transitions. [2021-10-28 08:39:58,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 08:39:58,638 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 08:39:58,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:39:58,641 INFO L225 Difference]: With dead ends: 172 [2021-10-28 08:39:58,641 INFO L226 Difference]: Without dead ends: 172 [2021-10-28 08:39:58,641 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 08:39:58,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2021-10-28 08:39:58,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 140. [2021-10-28 08:39:58,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 91 states have (on average 1.5714285714285714) internal successors, (143), 110 states have internal predecessors, (143), 16 states have call successors, (16), 11 states have call predecessors, (16), 15 states have return successors, (41), 18 states have call predecessors, (41), 15 states have call successors, (41) [2021-10-28 08:39:58,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 200 transitions. [2021-10-28 08:39:58,673 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 200 transitions. Word has length 9 [2021-10-28 08:39:58,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:39:58,674 INFO L470 AbstractCegarLoop]: Abstraction has 140 states and 200 transitions. [2021-10-28 08:39:58,674 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 08:39:58,674 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 200 transitions. [2021-10-28 08:39:58,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-28 08:39:58,675 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:39:58,675 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:39:58,690 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3575fc82-860b-435c-ba5b-2860696ab619/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-28 08:39:58,882 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3575fc82-860b-435c-ba5b-2860696ab619/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 08:39:58,882 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE === [c1Err0ASSERT_VIOLATIONMEMORY_FREE, c1Err1ASSERT_VIOLATIONMEMORY_FREE, c1Err2ASSERT_VIOLATIONMEMORY_FREE, c2Err0ASSERT_VIOLATIONMEMORY_FREE (and 16 more)] === [2021-10-28 08:39:58,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:39:58,883 INFO L85 PathProgramCache]: Analyzing trace with hash -890391164, now seen corresponding path program 1 times [2021-10-28 08:39:58,883 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 08:39:58,884 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [692069799] [2021-10-28 08:39:58,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:39:58,884 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 08:39:58,884 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3575fc82-860b-435c-ba5b-2860696ab619/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 08:39:58,885 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3575fc82-860b-435c-ba5b-2860696ab619/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 08:39:58,886 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3575fc82-860b-435c-ba5b-2860696ab619/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-28 08:39:59,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:39:59,152 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-28 08:39:59,154 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:39:59,486 INFO L354 Elim1Store]: treesize reduction 463, result has 13.5 percent of original size [2021-10-28 08:39:59,487 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 255 treesize of output 299 [2021-10-28 08:40:04,981 INFO L354 Elim1Store]: treesize reduction 36, result has 41.0 percent of original size [2021-10-28 08:40:04,982 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 122 treesize of output 126 [2021-10-28 08:40:14,923 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 137 treesize of output 109 [2021-10-28 08:40:17,069 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 08:40:17,069 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 08:40:17,659 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 08:40:17,659 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 08:40:17,660 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [692069799] [2021-10-28 08:40:17,660 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [692069799] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 08:40:17,660 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:40:17,660 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 4] imperfect sequences [] total 8 [2021-10-28 08:40:17,661 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369850920] [2021-10-28 08:40:17,661 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-28 08:40:17,661 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 08:40:17,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-28 08:40:17,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-10-28 08:40:17,663 INFO L87 Difference]: Start difference. First operand 140 states and 200 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 08:40:20,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:40:20,185 INFO L93 Difference]: Finished difference Result 260 states and 372 transitions. [2021-10-28 08:40:20,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-28 08:40:20,186 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 08:40:20,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:40:20,189 INFO L225 Difference]: With dead ends: 260 [2021-10-28 08:40:20,190 INFO L226 Difference]: Without dead ends: 260 [2021-10-28 08:40:20,190 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 9 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2021-10-28 08:40:20,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2021-10-28 08:40:20,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 213. [2021-10-28 08:40:20,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 150 states have (on average 1.5666666666666667) internal successors, (235), 170 states have internal predecessors, (235), 23 states have call successors, (23), 18 states have call predecessors, (23), 22 states have return successors, (59), 24 states have call predecessors, (59), 22 states have call successors, (59) [2021-10-28 08:40:20,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 317 transitions. [2021-10-28 08:40:20,222 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 317 transitions. Word has length 10 [2021-10-28 08:40:20,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:40:20,223 INFO L470 AbstractCegarLoop]: Abstraction has 213 states and 317 transitions. [2021-10-28 08:40:20,223 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 08:40:20,223 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 317 transitions. [2021-10-28 08:40:20,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-28 08:40:20,224 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:40:20,224 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:40:20,244 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3575fc82-860b-435c-ba5b-2860696ab619/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-28 08:40:20,437 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3575fc82-860b-435c-ba5b-2860696ab619/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 08:40:20,437 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting parse_inputErr3ASSERT_VIOLATIONMEMORY_DEREFERENCE === [c1Err0ASSERT_VIOLATIONMEMORY_FREE, c1Err1ASSERT_VIOLATIONMEMORY_FREE, c1Err2ASSERT_VIOLATIONMEMORY_FREE, c2Err0ASSERT_VIOLATIONMEMORY_FREE (and 16 more)] === [2021-10-28 08:40:20,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:40:20,438 INFO L85 PathProgramCache]: Analyzing trace with hash -1832322202, now seen corresponding path program 1 times [2021-10-28 08:40:20,438 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 08:40:20,440 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [20380435] [2021-10-28 08:40:20,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:40:20,442 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 08:40:20,443 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3575fc82-860b-435c-ba5b-2860696ab619/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 08:40:20,444 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3575fc82-860b-435c-ba5b-2860696ab619/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 08:40:20,485 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3575fc82-860b-435c-ba5b-2860696ab619/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-28 08:40:20,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:40:20,764 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-28 08:40:20,765 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:40:21,051 INFO L354 Elim1Store]: treesize reduction 336, result has 13.8 percent of original size [2021-10-28 08:40:21,052 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 91 treesize of output 124 [2021-10-28 08:40:21,062 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-10-28 08:40:21,062 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 171 treesize of output 167 [2021-10-28 08:40:24,131 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-28 08:40:24,163 INFO L354 Elim1Store]: treesize reduction 20, result has 39.4 percent of original size [2021-10-28 08:40:24,163 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 86 treesize of output 76 [2021-10-28 08:40:30,015 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 08:40:30,032 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 08:40:33,954 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 08:40:33,955 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 08:40:34,903 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 08:40:34,904 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 08:40:34,904 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [20380435] [2021-10-28 08:40:34,904 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [20380435] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 08:40:34,905 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:40:34,905 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 4] imperfect sequences [] total 8 [2021-10-28 08:40:34,905 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426731041] [2021-10-28 08:40:34,906 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-28 08:40:34,906 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 08:40:34,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-28 08:40:34,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-10-28 08:40:34,908 INFO L87 Difference]: Start difference. First operand 213 states and 317 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 08:40:37,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:40:37,462 INFO L93 Difference]: Finished difference Result 394 states and 571 transitions. [2021-10-28 08:40:37,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-28 08:40:37,464 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 08:40:37,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:40:37,470 INFO L225 Difference]: With dead ends: 394 [2021-10-28 08:40:37,471 INFO L226 Difference]: Without dead ends: 394 [2021-10-28 08:40:37,471 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2021-10-28 08:40:37,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2021-10-28 08:40:37,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 319. [2021-10-28 08:40:37,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 319 states, 230 states have (on average 1.5521739130434782) internal successors, (357), 255 states have internal predecessors, (357), 34 states have call successors, (34), 27 states have call predecessors, (34), 37 states have return successors, (114), 36 states have call predecessors, (114), 33 states have call successors, (114) [2021-10-28 08:40:37,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 505 transitions. [2021-10-28 08:40:37,525 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 505 transitions. Word has length 11 [2021-10-28 08:40:37,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:40:37,526 INFO L470 AbstractCegarLoop]: Abstraction has 319 states and 505 transitions. [2021-10-28 08:40:37,526 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 08:40:37,526 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 505 transitions. [2021-10-28 08:40:37,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-28 08:40:37,527 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:40:37,527 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:40:37,550 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3575fc82-860b-435c-ba5b-2860696ab619/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-28 08:40:37,743 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3575fc82-860b-435c-ba5b-2860696ab619/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 08:40:37,743 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting parse_inputErr4ASSERT_VIOLATIONMEMORY_DEREFERENCE === [c1Err0ASSERT_VIOLATIONMEMORY_FREE, c1Err1ASSERT_VIOLATIONMEMORY_FREE, c1Err2ASSERT_VIOLATIONMEMORY_FREE, c2Err0ASSERT_VIOLATIONMEMORY_FREE (and 16 more)] === [2021-10-28 08:40:37,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:40:37,744 INFO L85 PathProgramCache]: Analyzing trace with hash -967413306, now seen corresponding path program 1 times [2021-10-28 08:40:37,745 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 08:40:37,745 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [347467838] [2021-10-28 08:40:37,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:40:37,745 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 08:40:37,746 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3575fc82-860b-435c-ba5b-2860696ab619/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 08:40:37,752 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3575fc82-860b-435c-ba5b-2860696ab619/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 08:40:37,759 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3575fc82-860b-435c-ba5b-2860696ab619/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-28 08:40:38,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:40:38,097 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-28 08:40:38,099 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:40:38,412 INFO L354 Elim1Store]: treesize reduction 351, result has 15.4 percent of original size [2021-10-28 08:40:38,412 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 91 treesize of output 133 [2021-10-28 08:40:42,082 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-28 08:40:42,082 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 08:40:52,691 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 08:40:52,691 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 08:40:52,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:40:52,980 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 08:40:52,980 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [347467838] [2021-10-28 08:40:52,980 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [347467838] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 08:40:52,980 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:40:52,981 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 4] imperfect sequences [] total 8 [2021-10-28 08:40:52,981 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805656884] [2021-10-28 08:40:52,981 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-28 08:40:52,982 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 08:40:52,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-28 08:40:52,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-10-28 08:40:52,983 INFO L87 Difference]: Start difference. First operand 319 states and 505 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 08:41:07,210 WARN L207 SmtUtils]: Spent 13.49 s on a formula simplification that was a NOOP. DAG size: 102 [2021-10-28 08:41:45,777 WARN L228 Executor]: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3575fc82-860b-435c-ba5b-2860696ab619/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 08:41:45,782 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3575fc82-860b-435c-ba5b-2860696ab619/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 101 [2021-10-28 08:41:45,789 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3575fc82-860b-435c-ba5b-2860696ab619/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2021-10-28 08:41:45,978 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3575fc82-860b-435c-ba5b-2860696ab619/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 08:41:45,979 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_3575fc82-860b-435c-ba5b-2860696ab619/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 08:41:45,984 INFO L168 Benchmark]: Toolchain (without parser) took 112719.95 ms. Allocated memory was 50.3 MB in the beginning and 172.0 MB in the end (delta: 121.6 MB). Free memory was 24.9 MB in the beginning and 133.6 MB in the end (delta: -108.7 MB). Peak memory consumption was 12.8 MB. Max. memory is 16.1 GB. [2021-10-28 08:41:45,985 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 50.3 MB. Free memory was 30.5 MB in the beginning and 30.5 MB in the end (delta: 62.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 08:41:45,989 INFO L168 Benchmark]: CACSL2BoogieTranslator took 581.17 ms. Allocated memory was 50.3 MB in the beginning and 62.9 MB in the end (delta: 12.6 MB). Free memory was 24.7 MB in the beginning and 43.9 MB in the end (delta: -19.2 MB). Peak memory consumption was 6.1 MB. Max. memory is 16.1 GB. [2021-10-28 08:41:45,990 INFO L168 Benchmark]: Boogie Preprocessor took 130.35 ms. Allocated memory is still 62.9 MB. Free memory was 43.9 MB in the beginning and 40.4 MB in the end (delta: 3.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 08:41:45,991 INFO L168 Benchmark]: RCFGBuilder took 825.19 ms. Allocated memory is still 62.9 MB. Free memory was 40.1 MB in the beginning and 26.6 MB in the end (delta: 13.6 MB). Peak memory consumption was 15.0 MB. Max. memory is 16.1 GB. [2021-10-28 08:41:45,992 INFO L168 Benchmark]: TraceAbstraction took 111178.10 ms. Allocated memory was 62.9 MB in the beginning and 172.0 MB in the end (delta: 109.1 MB). Free memory was 26.0 MB in the beginning and 133.6 MB in the end (delta: -107.6 MB). Peak memory consumption was 2.2 MB. Max. memory is 16.1 GB. [2021-10-28 08:41:45,995 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 50.3 MB. Free memory was 30.5 MB in the beginning and 30.5 MB in the end (delta: 62.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 581.17 ms. Allocated memory was 50.3 MB in the beginning and 62.9 MB in the end (delta: 12.6 MB). Free memory was 24.7 MB in the beginning and 43.9 MB in the end (delta: -19.2 MB). Peak memory consumption was 6.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 130.35 ms. Allocated memory is still 62.9 MB. Free memory was 43.9 MB in the beginning and 40.4 MB in the end (delta: 3.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 825.19 ms. Allocated memory is still 62.9 MB. Free memory was 40.1 MB in the beginning and 26.6 MB in the end (delta: 13.6 MB). Peak memory consumption was 15.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 111178.10 ms. Allocated memory was 62.9 MB in the beginning and 172.0 MB in the end (delta: 109.1 MB). Free memory was 26.0 MB in the beginning and 133.6 MB in the end (delta: -107.6 MB). Peak memory consumption was 2.2 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_3575fc82-860b-435c-ba5b-2860696ab619/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_3575fc82-860b-435c-ba5b-2860696ab619/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...