./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/memsafety/test-0234-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a7ba8e-776b-4861-9aee-0e05fbd33833/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a7ba8e-776b-4861-9aee-0e05fbd33833/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a7ba8e-776b-4861-9aee-0e05fbd33833/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a7ba8e-776b-4861-9aee-0e05fbd33833/bin/uautomizer-ug76WZFUDN/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety/test-0234-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a7ba8e-776b-4861-9aee-0e05fbd33833/bin/uautomizer-ug76WZFUDN/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a7ba8e-776b-4861-9aee-0e05fbd33833/bin/uautomizer-ug76WZFUDN --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 2e40f9e7b474ba5b84186650c7060a1f3eed5394bab52ac2eaa493135efa417c --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-6b4ec56 [2022-11-20 12:13:20,982 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 12:13:20,984 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 12:13:21,016 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 12:13:21,019 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 12:13:21,024 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 12:13:21,029 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 12:13:21,032 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 12:13:21,034 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 12:13:21,040 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 12:13:21,041 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 12:13:21,043 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 12:13:21,044 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 12:13:21,047 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 12:13:21,048 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 12:13:21,051 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 12:13:21,053 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 12:13:21,054 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 12:13:21,056 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 12:13:21,061 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 12:13:21,064 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 12:13:21,066 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 12:13:21,068 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 12:13:21,068 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 12:13:21,077 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 12:13:21,079 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 12:13:21,079 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 12:13:21,080 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 12:13:21,082 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 12:13:21,084 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 12:13:21,085 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 12:13:21,086 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 12:13:21,087 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 12:13:21,089 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 12:13:21,090 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 12:13:21,090 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 12:13:21,091 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 12:13:21,091 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 12:13:21,091 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 12:13:21,092 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 12:13:21,093 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 12:13:21,094 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a7ba8e-776b-4861-9aee-0e05fbd33833/bin/uautomizer-ug76WZFUDN/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-11-20 12:13:21,133 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 12:13:21,134 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 12:13:21,134 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 12:13:21,135 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 12:13:21,135 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 12:13:21,136 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 12:13:21,136 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 12:13:21,137 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 12:13:21,137 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 12:13:21,137 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 12:13:21,138 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 12:13:21,138 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 12:13:21,139 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 12:13:21,139 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 12:13:21,139 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 12:13:21,139 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-20 12:13:21,139 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-20 12:13:21,140 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-20 12:13:21,140 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 12:13:21,140 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-20 12:13:21,140 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 12:13:21,141 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 12:13:21,141 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 12:13:21,141 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 12:13:21,141 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 12:13:21,141 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:13:21,142 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 12:13:21,142 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 12:13:21,142 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 12:13:21,142 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 12:13:21,143 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_02a7ba8e-776b-4861-9aee-0e05fbd33833/bin/uautomizer-ug76WZFUDN/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a7ba8e-776b-4861-9aee-0e05fbd33833/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2e40f9e7b474ba5b84186650c7060a1f3eed5394bab52ac2eaa493135efa417c [2022-11-20 12:13:21,394 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 12:13:21,430 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 12:13:21,434 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 12:13:21,436 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 12:13:21,437 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 12:13:21,438 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a7ba8e-776b-4861-9aee-0e05fbd33833/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/memsafety/test-0234-1.i [2022-11-20 12:13:24,500 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 12:13:24,816 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 12:13:24,817 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a7ba8e-776b-4861-9aee-0e05fbd33833/sv-benchmarks/c/memsafety/test-0234-1.i [2022-11-20 12:13:24,832 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a7ba8e-776b-4861-9aee-0e05fbd33833/bin/uautomizer-ug76WZFUDN/data/40b0e7d1c/5ba06c9afa064967a3fb6043f5f0fffb/FLAG0f7a5755c [2022-11-20 12:13:24,856 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a7ba8e-776b-4861-9aee-0e05fbd33833/bin/uautomizer-ug76WZFUDN/data/40b0e7d1c/5ba06c9afa064967a3fb6043f5f0fffb [2022-11-20 12:13:24,870 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 12:13:24,871 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 12:13:24,873 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 12:13:24,873 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 12:13:24,885 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 12:13:24,886 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:13:24" (1/1) ... [2022-11-20 12:13:24,887 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1539178a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:13:24, skipping insertion in model container [2022-11-20 12:13:24,887 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:13:24" (1/1) ... [2022-11-20 12:13:24,895 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 12:13:24,962 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 12:13:25,470 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:13:25,486 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 12:13:25,556 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:13:25,601 INFO L208 MainTranslator]: Completed translation [2022-11-20 12:13:25,601 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:13:25 WrapperNode [2022-11-20 12:13:25,602 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 12:13:25,603 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 12:13:25,603 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 12:13:25,603 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 12:13:25,612 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:13:25" (1/1) ... [2022-11-20 12:13:25,643 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:13:25" (1/1) ... [2022-11-20 12:13:25,674 INFO L138 Inliner]: procedures = 188, calls = 60, calls flagged for inlining = 14, calls inlined = 14, statements flattened = 203 [2022-11-20 12:13:25,674 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 12:13:25,675 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 12:13:25,675 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 12:13:25,676 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 12:13:25,685 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:13:25" (1/1) ... [2022-11-20 12:13:25,686 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:13:25" (1/1) ... [2022-11-20 12:13:25,690 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:13:25" (1/1) ... [2022-11-20 12:13:25,691 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:13:25" (1/1) ... [2022-11-20 12:13:25,700 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:13:25" (1/1) ... [2022-11-20 12:13:25,705 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:13:25" (1/1) ... [2022-11-20 12:13:25,708 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:13:25" (1/1) ... [2022-11-20 12:13:25,709 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:13:25" (1/1) ... [2022-11-20 12:13:25,713 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 12:13:25,714 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 12:13:25,714 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 12:13:25,714 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 12:13:25,715 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:13:25" (1/1) ... [2022-11-20 12:13:25,728 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:13:25,740 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a7ba8e-776b-4861-9aee-0e05fbd33833/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:13:25,754 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a7ba8e-776b-4861-9aee-0e05fbd33833/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 12:13:25,785 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a7ba8e-776b-4861-9aee-0e05fbd33833/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 12:13:25,812 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-20 12:13:25,812 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 12:13:25,813 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-20 12:13:25,813 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-20 12:13:25,813 INFO L130 BoogieDeclarations]: Found specification of procedure zalloc_or_die [2022-11-20 12:13:25,814 INFO L138 BoogieDeclarations]: Found implementation of procedure zalloc_or_die [2022-11-20 12:13:25,814 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 12:13:25,814 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-20 12:13:25,814 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 12:13:25,814 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 12:13:25,815 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 12:13:25,953 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 12:13:25,955 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 12:13:26,564 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 12:13:26,580 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 12:13:26,583 INFO L300 CfgBuilder]: Removed 10 assume(true) statements. [2022-11-20 12:13:26,586 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:13:26 BoogieIcfgContainer [2022-11-20 12:13:26,588 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 12:13:26,590 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 12:13:26,591 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 12:13:26,595 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 12:13:26,595 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 12:13:24" (1/3) ... [2022-11-20 12:13:26,597 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@334e7c6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:13:26, skipping insertion in model container [2022-11-20 12:13:26,597 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:13:25" (2/3) ... [2022-11-20 12:13:26,599 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@334e7c6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:13:26, skipping insertion in model container [2022-11-20 12:13:26,599 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:13:26" (3/3) ... [2022-11-20 12:13:26,601 INFO L112 eAbstractionObserver]: Analyzing ICFG test-0234-1.i [2022-11-20 12:13:26,620 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 12:13:26,621 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 75 error locations. [2022-11-20 12:13:26,689 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 12:13:26,696 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@41ce6dc2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 12:13:26,696 INFO L358 AbstractCegarLoop]: Starting to check reachability of 75 error locations. [2022-11-20 12:13:26,701 INFO L276 IsEmpty]: Start isEmpty. Operand has 191 states, 108 states have (on average 1.8981481481481481) internal successors, (205), 183 states have internal predecessors, (205), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-20 12:13:26,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-20 12:13:26,726 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:13:26,726 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-20 12:13:26,727 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr32REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 72 more)] === [2022-11-20 12:13:26,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:13:26,733 INFO L85 PathProgramCache]: Analyzing trace with hash 930118, now seen corresponding path program 1 times [2022-11-20 12:13:26,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:13:26,743 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648457389] [2022-11-20 12:13:26,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:13:26,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:13:26,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:13:26,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:13:26,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:13:26,881 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648457389] [2022-11-20 12:13:26,882 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [648457389] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:13:26,883 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:13:26,883 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 12:13:26,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846559613] [2022-11-20 12:13:26,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:13:26,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-20 12:13:26,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:13:26,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-20 12:13:26,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 12:13:26,923 INFO L87 Difference]: Start difference. First operand has 191 states, 108 states have (on average 1.8981481481481481) internal successors, (205), 183 states have internal predecessors, (205), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:13:26,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:13:26,956 INFO L93 Difference]: Finished difference Result 191 states and 206 transitions. [2022-11-20 12:13:26,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-20 12:13:26,958 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-11-20 12:13:26,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:13:26,968 INFO L225 Difference]: With dead ends: 191 [2022-11-20 12:13:26,968 INFO L226 Difference]: Without dead ends: 189 [2022-11-20 12:13:26,970 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 12:13:26,973 INFO L413 NwaCegarLoop]: 206 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 206 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 12:13:26,975 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 12:13:26,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2022-11-20 12:13:27,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 189. [2022-11-20 12:13:27,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 107 states have (on average 1.794392523364486) internal successors, (192), 181 states have internal predecessors, (192), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-20 12:13:27,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 204 transitions. [2022-11-20 12:13:27,027 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 204 transitions. Word has length 4 [2022-11-20 12:13:27,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:13:27,028 INFO L495 AbstractCegarLoop]: Abstraction has 189 states and 204 transitions. [2022-11-20 12:13:27,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:13:27,028 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 204 transitions. [2022-11-20 12:13:27,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-20 12:13:27,029 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:13:27,029 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-20 12:13:27,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 12:13:27,029 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting zalloc_or_dieErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 72 more)] === [2022-11-20 12:13:27,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:13:27,030 INFO L85 PathProgramCache]: Analyzing trace with hash 889842618, now seen corresponding path program 1 times [2022-11-20 12:13:27,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:13:27,031 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147335372] [2022-11-20 12:13:27,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:13:27,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:13:27,050 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:13:27,050 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [197279826] [2022-11-20 12:13:27,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:13:27,051 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:13:27,051 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a7ba8e-776b-4861-9aee-0e05fbd33833/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:13:27,059 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a7ba8e-776b-4861-9aee-0e05fbd33833/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:13:27,083 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a7ba8e-776b-4861-9aee-0e05fbd33833/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 12:13:27,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:13:27,186 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-20 12:13:27,194 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:13:27,259 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-20 12:13:27,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:13:27,276 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:13:27,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:13:27,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147335372] [2022-11-20 12:13:27,278 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:13:27,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [197279826] [2022-11-20 12:13:27,285 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [197279826] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:13:27,285 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:13:27,285 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 12:13:27,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474145307] [2022-11-20 12:13:27,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:13:27,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:13:27,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:13:27,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:13:27,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:13:27,291 INFO L87 Difference]: Start difference. First operand 189 states and 204 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:13:27,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:13:27,490 INFO L93 Difference]: Finished difference Result 188 states and 203 transitions. [2022-11-20 12:13:27,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:13:27,492 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-20 12:13:27,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:13:27,494 INFO L225 Difference]: With dead ends: 188 [2022-11-20 12:13:27,494 INFO L226 Difference]: Without dead ends: 188 [2022-11-20 12:13:27,494 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:13:27,495 INFO L413 NwaCegarLoop]: 198 mSDtfsCounter, 9 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 316 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 12:13:27,496 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 316 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 12:13:27,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2022-11-20 12:13:27,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 188. [2022-11-20 12:13:27,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 107 states have (on average 1.7850467289719627) internal successors, (191), 180 states have internal predecessors, (191), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-20 12:13:27,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 203 transitions. [2022-11-20 12:13:27,510 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 203 transitions. Word has length 6 [2022-11-20 12:13:27,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:13:27,510 INFO L495 AbstractCegarLoop]: Abstraction has 188 states and 203 transitions. [2022-11-20 12:13:27,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:13:27,511 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 203 transitions. [2022-11-20 12:13:27,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-20 12:13:27,511 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:13:27,511 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:13:27,522 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a7ba8e-776b-4861-9aee-0e05fbd33833/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-20 12:13:27,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a7ba8e-776b-4861-9aee-0e05fbd33833/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2022-11-20 12:13:27,717 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 72 more)] === [2022-11-20 12:13:27,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:13:27,718 INFO L85 PathProgramCache]: Analyzing trace with hash 1815317712, now seen corresponding path program 1 times [2022-11-20 12:13:27,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:13:27,718 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977380499] [2022-11-20 12:13:27,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:13:27,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:13:27,741 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:13:27,742 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [223506280] [2022-11-20 12:13:27,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:13:27,742 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:13:27,742 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a7ba8e-776b-4861-9aee-0e05fbd33833/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:13:27,745 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a7ba8e-776b-4861-9aee-0e05fbd33833/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:13:27,771 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a7ba8e-776b-4861-9aee-0e05fbd33833/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 12:13:27,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:13:27,848 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-20 12:13:27,851 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:13:27,894 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-20 12:13:27,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:13:27,920 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:13:27,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:13:27,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977380499] [2022-11-20 12:13:27,920 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:13:27,921 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [223506280] [2022-11-20 12:13:27,921 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [223506280] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:13:27,921 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:13:27,921 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:13:27,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190737967] [2022-11-20 12:13:27,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:13:27,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:13:27,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:13:27,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:13:27,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:13:27,923 INFO L87 Difference]: Start difference. First operand 188 states and 203 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:13:28,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:13:28,112 INFO L93 Difference]: Finished difference Result 197 states and 212 transitions. [2022-11-20 12:13:28,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 12:13:28,113 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-20 12:13:28,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:13:28,114 INFO L225 Difference]: With dead ends: 197 [2022-11-20 12:13:28,114 INFO L226 Difference]: Without dead ends: 197 [2022-11-20 12:13:28,115 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:13:28,116 INFO L413 NwaCegarLoop]: 192 mSDtfsCounter, 16 mSDsluCounter, 327 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 519 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 12:13:28,116 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 519 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 12:13:28,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2022-11-20 12:13:28,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 197. [2022-11-20 12:13:28,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 115 states have (on average 1.7391304347826086) internal successors, (200), 188 states have internal predecessors, (200), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-20 12:13:28,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 212 transitions. [2022-11-20 12:13:28,132 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 212 transitions. Word has length 7 [2022-11-20 12:13:28,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:13:28,132 INFO L495 AbstractCegarLoop]: Abstraction has 197 states and 212 transitions. [2022-11-20 12:13:28,132 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:13:28,132 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 212 transitions. [2022-11-20 12:13:28,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-20 12:13:28,134 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:13:28,135 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:13:28,145 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a7ba8e-776b-4861-9aee-0e05fbd33833/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-20 12:13:28,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a7ba8e-776b-4861-9aee-0e05fbd33833/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:13:28,341 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 72 more)] === [2022-11-20 12:13:28,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:13:28,342 INFO L85 PathProgramCache]: Analyzing trace with hash -1660157209, now seen corresponding path program 1 times [2022-11-20 12:13:28,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:13:28,343 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325737943] [2022-11-20 12:13:28,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:13:28,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:13:28,373 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:13:28,374 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1507337137] [2022-11-20 12:13:28,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:13:28,374 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:13:28,374 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a7ba8e-776b-4861-9aee-0e05fbd33833/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:13:28,380 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a7ba8e-776b-4861-9aee-0e05fbd33833/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:13:28,406 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a7ba8e-776b-4861-9aee-0e05fbd33833/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 12:13:28,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:13:28,662 INFO L263 TraceCheckSpWp]: Trace formula consists of 504 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-20 12:13:28,668 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:13:28,871 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-20 12:13:28,893 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-20 12:13:31,120 INFO L350 Elim1Store]: Elim1 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 48 treesize of output 42 [2022-11-20 12:13:33,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:13:33,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325737943] [2022-11-20 12:13:33,508 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:13:33,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1507337137] [2022-11-20 12:13:33,508 WARN L319 FreeRefinementEngine]: Global settings require throwing the following exception [2022-11-20 12:13:33,514 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a7ba8e-776b-4861-9aee-0e05fbd33833/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 139 [2022-11-20 12:13:33,519 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a7ba8e-776b-4861-9aee-0e05fbd33833/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-11-20 12:13:33,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a7ba8e-776b-4861-9aee-0e05fbd33833/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:13:33,709 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_02a7ba8e-776b-4861-9aee-0e05fbd33833/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. No stderr output. at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:243) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseSuccess(Executor.java:258) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.pop(Scriptor.java:140) 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.logic.WrapperScript.pop(WrapperScript.java:153) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.UndoableWrapperScript.pop(UndoableWrapperScript.java:61) at de.uni_freiburg.informatik.ultimate.logic.Util.checkSat(Util.java:67) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA.getRedundancy(SimplifyDDA.java:620) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.simplify.SimplifyDDAWithTimeout.getRedundancy(SimplifyDDAWithTimeout.java:120) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA$Simplifier.walk(SimplifyDDA.java:370) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:115) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:106) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA.simplifyOnce(SimplifyDDA.java:649) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.simplify.SimplifyDDAWithTimeout.getSimplifiedTerm(SimplifyDDAWithTimeout.java:180) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplify(SmtUtils.java:198) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplifyWithStatistics(SmtUtils.java:265) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify(QuantifierPusher.java:800) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:132) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:169) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:77) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:61) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:295) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.pushInner(QuantifierPusher.java:282) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:193) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:169) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:77) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:61) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:295) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.pushMinionEliminatees(QuantifierPushUtilsForSubsetPush.java:255) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.sequentialSubsetPush(QuantifierPushUtilsForSubsetPush.java:151) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:345) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:188) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:65) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:61) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:295) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:281) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.PartialQuantifierElimination.eliminate(PartialQuantifierElimination.java:90) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer$QuantifierEliminationPostprocessor.postprocess(IterativePredicateTransformer.java:238) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:420) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeStrongestPostconditionSequence(IterativePredicateTransformer.java:199) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:299) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:185) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:163) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:209) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:121) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:336) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:262) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) 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$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1465) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:658) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:383) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:239) ... 75 more [2022-11-20 12:13:33,715 INFO L158 Benchmark]: Toolchain (without parser) took 8843.72ms. Allocated memory was 159.4MB in the beginning and 192.9MB in the end (delta: 33.6MB). Free memory was 126.4MB in the beginning and 112.3MB in the end (delta: 14.1MB). Peak memory consumption was 47.6MB. Max. memory is 16.1GB. [2022-11-20 12:13:33,715 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 109.1MB. Free memory is still 58.2MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 12:13:33,716 INFO L158 Benchmark]: CACSL2BoogieTranslator took 729.43ms. Allocated memory is still 159.4MB. Free memory was 125.9MB in the beginning and 104.5MB in the end (delta: 21.4MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2022-11-20 12:13:33,716 INFO L158 Benchmark]: Boogie Procedure Inliner took 71.80ms. Allocated memory is still 159.4MB. Free memory was 104.5MB in the beginning and 101.9MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 12:13:33,717 INFO L158 Benchmark]: Boogie Preprocessor took 37.83ms. Allocated memory is still 159.4MB. Free memory was 101.9MB in the beginning and 99.6MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 12:13:33,717 INFO L158 Benchmark]: RCFGBuilder took 874.07ms. Allocated memory is still 159.4MB. Free memory was 99.6MB in the beginning and 69.8MB in the end (delta: 29.8MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. [2022-11-20 12:13:33,718 INFO L158 Benchmark]: TraceAbstraction took 7122.41ms. Allocated memory was 159.4MB in the beginning and 192.9MB in the end (delta: 33.6MB). Free memory was 69.3MB in the beginning and 112.3MB in the end (delta: -43.0MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 12:13:33,720 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 109.1MB. Free memory is still 58.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 729.43ms. Allocated memory is still 159.4MB. Free memory was 125.9MB in the beginning and 104.5MB in the end (delta: 21.4MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 71.80ms. Allocated memory is still 159.4MB. Free memory was 104.5MB in the beginning and 101.9MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 37.83ms. Allocated memory is still 159.4MB. Free memory was 101.9MB in the beginning and 99.6MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 874.07ms. Allocated memory is still 159.4MB. Free memory was 99.6MB in the beginning and 69.8MB in the end (delta: 29.8MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. * TraceAbstraction took 7122.41ms. Allocated memory was 159.4MB in the beginning and 192.9MB in the end (delta: 33.6MB). Free memory was 69.3MB in the beginning and 112.3MB in the end (delta: -43.0MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a7ba8e-776b-4861-9aee-0e05fbd33833/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. No stderr output. de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a7ba8e-776b-4861-9aee-0e05fbd33833/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. No stderr output.: de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:243) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a7ba8e-776b-4861-9aee-0e05fbd33833/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a7ba8e-776b-4861-9aee-0e05fbd33833/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a7ba8e-776b-4861-9aee-0e05fbd33833/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a7ba8e-776b-4861-9aee-0e05fbd33833/bin/uautomizer-ug76WZFUDN/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety/test-0234-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a7ba8e-776b-4861-9aee-0e05fbd33833/bin/uautomizer-ug76WZFUDN/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a7ba8e-776b-4861-9aee-0e05fbd33833/bin/uautomizer-ug76WZFUDN --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 2e40f9e7b474ba5b84186650c7060a1f3eed5394bab52ac2eaa493135efa417c --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-6b4ec56 [2022-11-20 12:13:36,005 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 12:13:36,008 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 12:13:36,045 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 12:13:36,046 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 12:13:36,047 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 12:13:36,048 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 12:13:36,050 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 12:13:36,052 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 12:13:36,053 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 12:13:36,054 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 12:13:36,060 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 12:13:36,062 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 12:13:36,066 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 12:13:36,067 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 12:13:36,070 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 12:13:36,071 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 12:13:36,079 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 12:13:36,081 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 12:13:36,083 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 12:13:36,084 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 12:13:36,088 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 12:13:36,089 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 12:13:36,090 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 12:13:36,093 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 12:13:36,094 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 12:13:36,094 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 12:13:36,095 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 12:13:36,095 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 12:13:36,096 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 12:13:36,097 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 12:13:36,097 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 12:13:36,098 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 12:13:36,099 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 12:13:36,100 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 12:13:36,100 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 12:13:36,101 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 12:13:36,101 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 12:13:36,102 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 12:13:36,107 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 12:13:36,109 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 12:13:36,114 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a7ba8e-776b-4861-9aee-0e05fbd33833/bin/uautomizer-ug76WZFUDN/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2022-11-20 12:13:36,153 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 12:13:36,154 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 12:13:36,155 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 12:13:36,156 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 12:13:36,157 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 12:13:36,157 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 12:13:36,158 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 12:13:36,158 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 12:13:36,158 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 12:13:36,158 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 12:13:36,159 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 12:13:36,159 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 12:13:36,160 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 12:13:36,160 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 12:13:36,160 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 12:13:36,160 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-20 12:13:36,160 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-20 12:13:36,161 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-20 12:13:36,161 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 12:13:36,161 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-20 12:13:36,161 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-20 12:13:36,161 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-20 12:13:36,161 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 12:13:36,162 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 12:13:36,162 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 12:13:36,162 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 12:13:36,162 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 12:13:36,162 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:13:36,163 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 12:13:36,163 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 12:13:36,163 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-20 12:13:36,163 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-20 12:13:36,164 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-20 12:13:36,164 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_02a7ba8e-776b-4861-9aee-0e05fbd33833/bin/uautomizer-ug76WZFUDN/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a7ba8e-776b-4861-9aee-0e05fbd33833/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2e40f9e7b474ba5b84186650c7060a1f3eed5394bab52ac2eaa493135efa417c [2022-11-20 12:13:36,547 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 12:13:36,574 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 12:13:36,577 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 12:13:36,578 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 12:13:36,582 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 12:13:36,584 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a7ba8e-776b-4861-9aee-0e05fbd33833/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/memsafety/test-0234-1.i [2022-11-20 12:13:39,785 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 12:13:40,063 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 12:13:40,063 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a7ba8e-776b-4861-9aee-0e05fbd33833/sv-benchmarks/c/memsafety/test-0234-1.i [2022-11-20 12:13:40,078 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a7ba8e-776b-4861-9aee-0e05fbd33833/bin/uautomizer-ug76WZFUDN/data/a3a4b1121/7596ba006e734eb19c197e34ad1dc9d7/FLAGfa87be415 [2022-11-20 12:13:40,099 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a7ba8e-776b-4861-9aee-0e05fbd33833/bin/uautomizer-ug76WZFUDN/data/a3a4b1121/7596ba006e734eb19c197e34ad1dc9d7 [2022-11-20 12:13:40,105 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 12:13:40,107 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 12:13:40,108 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 12:13:40,108 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 12:13:40,114 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 12:13:40,115 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:13:40" (1/1) ... [2022-11-20 12:13:40,116 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a74fb8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:13:40, skipping insertion in model container [2022-11-20 12:13:40,116 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:13:40" (1/1) ... [2022-11-20 12:13:40,124 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 12:13:40,160 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 12:13:40,561 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:13:40,587 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 12:13:40,635 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:13:40,679 INFO L208 MainTranslator]: Completed translation [2022-11-20 12:13:40,679 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:13:40 WrapperNode [2022-11-20 12:13:40,679 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 12:13:40,681 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 12:13:40,681 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 12:13:40,681 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 12:13:40,689 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:13:40" (1/1) ... [2022-11-20 12:13:40,708 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:13:40" (1/1) ... [2022-11-20 12:13:40,746 INFO L138 Inliner]: procedures = 189, calls = 60, calls flagged for inlining = 14, calls inlined = 14, statements flattened = 199 [2022-11-20 12:13:40,751 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 12:13:40,755 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 12:13:40,756 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 12:13:40,756 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 12:13:40,764 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:13:40" (1/1) ... [2022-11-20 12:13:40,765 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:13:40" (1/1) ... [2022-11-20 12:13:40,769 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:13:40" (1/1) ... [2022-11-20 12:13:40,769 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:13:40" (1/1) ... [2022-11-20 12:13:40,782 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:13:40" (1/1) ... [2022-11-20 12:13:40,787 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:13:40" (1/1) ... [2022-11-20 12:13:40,796 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:13:40" (1/1) ... [2022-11-20 12:13:40,798 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:13:40" (1/1) ... [2022-11-20 12:13:40,801 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 12:13:40,804 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 12:13:40,805 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 12:13:40,805 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 12:13:40,806 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:13:40" (1/1) ... [2022-11-20 12:13:40,813 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:13:40,825 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a7ba8e-776b-4861-9aee-0e05fbd33833/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:13:40,837 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a7ba8e-776b-4861-9aee-0e05fbd33833/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 12:13:40,846 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a7ba8e-776b-4861-9aee-0e05fbd33833/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 12:13:40,883 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-20 12:13:40,884 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 12:13:40,884 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-20 12:13:40,884 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-20 12:13:40,884 INFO L130 BoogieDeclarations]: Found specification of procedure zalloc_or_die [2022-11-20 12:13:40,884 INFO L138 BoogieDeclarations]: Found implementation of procedure zalloc_or_die [2022-11-20 12:13:40,884 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 12:13:40,884 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-20 12:13:40,884 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-20 12:13:40,884 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 12:13:40,885 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 12:13:41,111 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 12:13:41,114 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 12:13:41,883 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 12:13:41,891 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 12:13:41,891 INFO L300 CfgBuilder]: Removed 10 assume(true) statements. [2022-11-20 12:13:41,894 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:13:41 BoogieIcfgContainer [2022-11-20 12:13:41,894 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 12:13:41,899 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 12:13:41,899 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 12:13:41,903 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 12:13:41,903 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 12:13:40" (1/3) ... [2022-11-20 12:13:41,904 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16d9ec8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:13:41, skipping insertion in model container [2022-11-20 12:13:41,905 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:13:40" (2/3) ... [2022-11-20 12:13:41,907 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16d9ec8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:13:41, skipping insertion in model container [2022-11-20 12:13:41,907 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:13:41" (3/3) ... [2022-11-20 12:13:41,909 INFO L112 eAbstractionObserver]: Analyzing ICFG test-0234-1.i [2022-11-20 12:13:41,933 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 12:13:41,933 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 75 error locations. [2022-11-20 12:13:41,999 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 12:13:42,009 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@40928231, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 12:13:42,009 INFO L358 AbstractCegarLoop]: Starting to check reachability of 75 error locations. [2022-11-20 12:13:42,015 INFO L276 IsEmpty]: Start isEmpty. Operand has 186 states, 103 states have (on average 1.941747572815534) internal successors, (200), 178 states have internal predecessors, (200), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-20 12:13:42,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-20 12:13:42,024 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:13:42,025 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-20 12:13:42,025 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr32REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 72 more)] === [2022-11-20 12:13:42,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:13:42,034 INFO L85 PathProgramCache]: Analyzing trace with hash 929958, now seen corresponding path program 1 times [2022-11-20 12:13:42,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:13:42,052 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1167450948] [2022-11-20 12:13:42,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:13:42,053 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:13:42,053 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a7ba8e-776b-4861-9aee-0e05fbd33833/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:13:42,063 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a7ba8e-776b-4861-9aee-0e05fbd33833/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:13:42,095 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a7ba8e-776b-4861-9aee-0e05fbd33833/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-20 12:13:42,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:13:42,182 INFO L263 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-20 12:13:42,185 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:13:42,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:13:42,207 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:13:42,207 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:13:42,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1167450948] [2022-11-20 12:13:42,209 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1167450948] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:13:42,209 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:13:42,209 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 12:13:42,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841607360] [2022-11-20 12:13:42,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:13:42,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-20 12:13:42,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:13:42,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-20 12:13:42,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 12:13:42,278 INFO L87 Difference]: Start difference. First operand has 186 states, 103 states have (on average 1.941747572815534) internal successors, (200), 178 states have internal predecessors, (200), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:13:42,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:13:42,313 INFO L93 Difference]: Finished difference Result 186 states and 201 transitions. [2022-11-20 12:13:42,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-20 12:13:42,315 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-11-20 12:13:42,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:13:42,327 INFO L225 Difference]: With dead ends: 186 [2022-11-20 12:13:42,327 INFO L226 Difference]: Without dead ends: 184 [2022-11-20 12:13:42,329 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 12:13:42,335 INFO L413 NwaCegarLoop]: 201 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 201 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 12:13:42,337 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 12:13:42,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2022-11-20 12:13:42,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 184. [2022-11-20 12:13:42,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 102 states have (on average 1.8333333333333333) internal successors, (187), 176 states have internal predecessors, (187), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-20 12:13:42,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 199 transitions. [2022-11-20 12:13:42,387 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 199 transitions. Word has length 4 [2022-11-20 12:13:42,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:13:42,388 INFO L495 AbstractCegarLoop]: Abstraction has 184 states and 199 transitions. [2022-11-20 12:13:42,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:13:42,389 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 199 transitions. [2022-11-20 12:13:42,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-20 12:13:42,395 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:13:42,395 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-20 12:13:42,406 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a7ba8e-776b-4861-9aee-0e05fbd33833/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-20 12:13:42,596 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a7ba8e-776b-4861-9aee-0e05fbd33833/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:13:42,597 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting zalloc_or_dieErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 72 more)] === [2022-11-20 12:13:42,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:13:42,598 INFO L85 PathProgramCache]: Analyzing trace with hash 889837653, now seen corresponding path program 1 times [2022-11-20 12:13:42,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:13:42,598 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [37182898] [2022-11-20 12:13:42,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:13:42,599 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:13:42,599 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a7ba8e-776b-4861-9aee-0e05fbd33833/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:13:42,600 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a7ba8e-776b-4861-9aee-0e05fbd33833/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:13:42,626 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a7ba8e-776b-4861-9aee-0e05fbd33833/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-20 12:13:42,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:13:42,720 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 12:13:42,722 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:13:42,778 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-20 12:13:42,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:13:42,791 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:13:42,791 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:13:42,791 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [37182898] [2022-11-20 12:13:42,792 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [37182898] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:13:42,792 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:13:42,792 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 12:13:42,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50873474] [2022-11-20 12:13:42,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:13:42,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:13:42,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:13:42,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:13:42,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:13:42,795 INFO L87 Difference]: Start difference. First operand 184 states and 199 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:13:43,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:13:43,132 INFO L93 Difference]: Finished difference Result 183 states and 198 transitions. [2022-11-20 12:13:43,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:13:43,134 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-20 12:13:43,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:13:43,135 INFO L225 Difference]: With dead ends: 183 [2022-11-20 12:13:43,135 INFO L226 Difference]: Without dead ends: 183 [2022-11-20 12:13:43,135 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:13:43,136 INFO L413 NwaCegarLoop]: 193 mSDtfsCounter, 9 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 306 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 12:13:43,137 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 306 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 12:13:43,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2022-11-20 12:13:43,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 183. [2022-11-20 12:13:43,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 102 states have (on average 1.8235294117647058) internal successors, (186), 175 states have internal predecessors, (186), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-20 12:13:43,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 198 transitions. [2022-11-20 12:13:43,161 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 198 transitions. Word has length 6 [2022-11-20 12:13:43,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:13:43,161 INFO L495 AbstractCegarLoop]: Abstraction has 183 states and 198 transitions. [2022-11-20 12:13:43,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:13:43,162 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 198 transitions. [2022-11-20 12:13:43,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-20 12:13:43,162 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:13:43,162 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:13:43,173 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a7ba8e-776b-4861-9aee-0e05fbd33833/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-20 12:13:43,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a7ba8e-776b-4861-9aee-0e05fbd33833/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:13:43,363 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 72 more)] === [2022-11-20 12:13:43,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:13:43,364 INFO L85 PathProgramCache]: Analyzing trace with hash 1815163792, now seen corresponding path program 1 times [2022-11-20 12:13:43,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:13:43,364 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [375574466] [2022-11-20 12:13:43,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:13:43,365 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:13:43,365 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a7ba8e-776b-4861-9aee-0e05fbd33833/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:13:43,366 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a7ba8e-776b-4861-9aee-0e05fbd33833/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:13:43,374 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a7ba8e-776b-4861-9aee-0e05fbd33833/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-20 12:13:43,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:13:43,468 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-20 12:13:43,472 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:13:43,542 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-20 12:13:43,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:13:43,569 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:13:43,569 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:13:43,570 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [375574466] [2022-11-20 12:13:43,570 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [375574466] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:13:43,570 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:13:43,570 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:13:43,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825157858] [2022-11-20 12:13:43,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:13:43,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:13:43,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:13:43,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:13:43,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:13:43,572 INFO L87 Difference]: Start difference. First operand 183 states and 198 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:13:43,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:13:43,976 INFO L93 Difference]: Finished difference Result 192 states and 207 transitions. [2022-11-20 12:13:43,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 12:13:43,977 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-20 12:13:43,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:13:43,979 INFO L225 Difference]: With dead ends: 192 [2022-11-20 12:13:43,979 INFO L226 Difference]: Without dead ends: 192 [2022-11-20 12:13:43,979 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:13:43,980 INFO L413 NwaCegarLoop]: 187 mSDtfsCounter, 16 mSDsluCounter, 317 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 504 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-20 12:13:43,980 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 504 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-20 12:13:43,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2022-11-20 12:13:43,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 192. [2022-11-20 12:13:43,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 110 states have (on average 1.7727272727272727) internal successors, (195), 183 states have internal predecessors, (195), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-20 12:13:43,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 207 transitions. [2022-11-20 12:13:43,995 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 207 transitions. Word has length 7 [2022-11-20 12:13:43,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:13:43,995 INFO L495 AbstractCegarLoop]: Abstraction has 192 states and 207 transitions. [2022-11-20 12:13:43,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:13:43,996 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 207 transitions. [2022-11-20 12:13:43,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-20 12:13:43,997 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:13:43,998 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:13:44,019 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a7ba8e-776b-4861-9aee-0e05fbd33833/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-20 12:13:44,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a7ba8e-776b-4861-9aee-0e05fbd33833/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:13:44,210 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 72 more)] === [2022-11-20 12:13:44,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:13:44,211 INFO L85 PathProgramCache]: Analyzing trace with hash 1255359815, now seen corresponding path program 1 times [2022-11-20 12:13:44,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:13:44,212 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [944235442] [2022-11-20 12:13:44,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:13:44,213 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:13:44,213 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a7ba8e-776b-4861-9aee-0e05fbd33833/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:13:44,214 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a7ba8e-776b-4861-9aee-0e05fbd33833/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:13:44,232 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a7ba8e-776b-4861-9aee-0e05fbd33833/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-20 12:13:44,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:13:44,501 INFO L263 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-20 12:13:44,507 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:13:44,575 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2022-11-20 12:13:44,576 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:13:44,576 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:13:44,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [944235442] [2022-11-20 12:13:44,577 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [944235442] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:13:44,577 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:13:44,577 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 12:13:44,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596811532] [2022-11-20 12:13:44,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:13:44,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 12:13:44,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:13:44,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 12:13:44,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:13:44,585 INFO L87 Difference]: Start difference. First operand 192 states and 207 transitions. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 12:13:44,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:13:44,723 INFO L93 Difference]: Finished difference Result 204 states and 219 transitions. [2022-11-20 12:13:44,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:13:44,724 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) Word has length 66 [2022-11-20 12:13:44,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:13:44,726 INFO L225 Difference]: With dead ends: 204 [2022-11-20 12:13:44,726 INFO L226 Difference]: Without dead ends: 194 [2022-11-20 12:13:44,726 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:13:44,728 INFO L413 NwaCegarLoop]: 188 mSDtfsCounter, 14 mSDsluCounter, 538 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 726 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 12:13:44,728 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 726 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 12:13:44,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2022-11-20 12:13:44,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 194. [2022-11-20 12:13:44,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 112 states have (on average 1.7589285714285714) internal successors, (197), 185 states have internal predecessors, (197), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-20 12:13:44,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 209 transitions. [2022-11-20 12:13:44,740 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 209 transitions. Word has length 66 [2022-11-20 12:13:44,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:13:44,740 INFO L495 AbstractCegarLoop]: Abstraction has 194 states and 209 transitions. [2022-11-20 12:13:44,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 12:13:44,741 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 209 transitions. [2022-11-20 12:13:44,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-11-20 12:13:44,743 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:13:44,743 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:13:44,758 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a7ba8e-776b-4861-9aee-0e05fbd33833/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-20 12:13:44,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a7ba8e-776b-4861-9aee-0e05fbd33833/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:13:44,957 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 72 more)] === [2022-11-20 12:13:44,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:13:44,958 INFO L85 PathProgramCache]: Analyzing trace with hash 2028632282, now seen corresponding path program 1 times [2022-11-20 12:13:44,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:13:44,962 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [703061836] [2022-11-20 12:13:44,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:13:44,963 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:13:44,963 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a7ba8e-776b-4861-9aee-0e05fbd33833/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:13:44,964 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a7ba8e-776b-4861-9aee-0e05fbd33833/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:13:45,000 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a7ba8e-776b-4861-9aee-0e05fbd33833/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-20 12:13:45,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:13:45,259 INFO L263 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-20 12:13:45,262 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:13:45,344 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 51 proven. 1 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2022-11-20 12:13:45,345 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:13:45,690 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 15 proven. 45 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2022-11-20 12:13:45,690 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:13:45,691 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [703061836] [2022-11-20 12:13:45,691 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [703061836] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:13:45,691 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:13:45,691 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2022-11-20 12:13:45,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880472566] [2022-11-20 12:13:45,692 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:13:45,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 12:13:45,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:13:45,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 12:13:45,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-11-20 12:13:45,693 INFO L87 Difference]: Start difference. First operand 194 states and 209 transitions. Second operand has 10 states, 10 states have (on average 4.9) internal successors, (49), 10 states have internal predecessors, (49), 2 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-20 12:13:46,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:13:46,103 INFO L93 Difference]: Finished difference Result 213 states and 229 transitions. [2022-11-20 12:13:46,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-20 12:13:46,104 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.9) internal successors, (49), 10 states have internal predecessors, (49), 2 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) Word has length 71 [2022-11-20 12:13:46,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:13:46,105 INFO L225 Difference]: With dead ends: 213 [2022-11-20 12:13:46,105 INFO L226 Difference]: Without dead ends: 198 [2022-11-20 12:13:46,106 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=93, Invalid=147, Unknown=0, NotChecked=0, Total=240 [2022-11-20 12:13:46,107 INFO L413 NwaCegarLoop]: 189 mSDtfsCounter, 45 mSDsluCounter, 906 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 1095 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 12:13:46,107 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 1095 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 12:13:46,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2022-11-20 12:13:46,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 198. [2022-11-20 12:13:46,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 116 states have (on average 1.7327586206896552) internal successors, (201), 189 states have internal predecessors, (201), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-20 12:13:46,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 213 transitions. [2022-11-20 12:13:46,116 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 213 transitions. Word has length 71 [2022-11-20 12:13:46,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:13:46,117 INFO L495 AbstractCegarLoop]: Abstraction has 198 states and 213 transitions. [2022-11-20 12:13:46,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.9) internal successors, (49), 10 states have internal predecessors, (49), 2 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-20 12:13:46,117 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 213 transitions. [2022-11-20 12:13:46,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-11-20 12:13:46,119 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:13:46,119 INFO L195 NwaCegarLoop]: trace histogram [20, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:13:46,135 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a7ba8e-776b-4861-9aee-0e05fbd33833/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-20 12:13:46,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a7ba8e-776b-4861-9aee-0e05fbd33833/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:13:46,334 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 72 more)] === [2022-11-20 12:13:46,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:13:46,335 INFO L85 PathProgramCache]: Analyzing trace with hash -270641913, now seen corresponding path program 2 times [2022-11-20 12:13:46,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:13:46,336 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1863958300] [2022-11-20 12:13:46,336 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 12:13:46,336 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:13:46,336 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a7ba8e-776b-4861-9aee-0e05fbd33833/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:13:46,337 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a7ba8e-776b-4861-9aee-0e05fbd33833/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:13:46,338 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a7ba8e-776b-4861-9aee-0e05fbd33833/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-20 12:13:46,496 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 12:13:46,496 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:13:46,500 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-20 12:13:46,504 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:13:46,558 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-20 12:13:46,804 INFO L134 CoverageAnalysis]: Checked inductivity of 395 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 385 trivial. 0 not checked. [2022-11-20 12:13:46,804 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:13:46,804 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:13:46,804 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1863958300] [2022-11-20 12:13:46,804 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1863958300] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:13:46,804 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:13:46,804 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 12:13:46,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746848295] [2022-11-20 12:13:46,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:13:46,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:13:46,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:13:46,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:13:46,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:13:46,806 INFO L87 Difference]: Start difference. First operand 198 states and 213 transitions. Second operand has 3 states, 2 states have (on average 12.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-11-20 12:13:46,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:13:46,816 INFO L93 Difference]: Finished difference Result 197 states and 212 transitions. [2022-11-20 12:13:46,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:13:46,816 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 12.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 86 [2022-11-20 12:13:46,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:13:46,820 INFO L225 Difference]: With dead ends: 197 [2022-11-20 12:13:46,820 INFO L226 Difference]: Without dead ends: 197 [2022-11-20 12:13:46,820 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:13:46,821 INFO L413 NwaCegarLoop]: 195 mSDtfsCounter, 0 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 331 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 60 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 12:13:46,822 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 331 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 60 Unchecked, 0.0s Time] [2022-11-20 12:13:46,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2022-11-20 12:13:46,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 197. [2022-11-20 12:13:46,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 116 states have (on average 1.7241379310344827) internal successors, (200), 188 states have internal predecessors, (200), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-20 12:13:46,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 212 transitions. [2022-11-20 12:13:46,829 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 212 transitions. Word has length 86 [2022-11-20 12:13:46,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:13:46,830 INFO L495 AbstractCegarLoop]: Abstraction has 197 states and 212 transitions. [2022-11-20 12:13:46,830 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 12.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-11-20 12:13:46,831 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 212 transitions. [2022-11-20 12:13:46,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-11-20 12:13:46,832 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:13:46,833 INFO L195 NwaCegarLoop]: trace histogram [22, 6, 6, 6, 6, 6, 6, 6, 6, 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] [2022-11-20 12:13:46,851 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a7ba8e-776b-4861-9aee-0e05fbd33833/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-11-20 12:13:47,044 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a7ba8e-776b-4861-9aee-0e05fbd33833/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:13:47,045 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 72 more)] === [2022-11-20 12:13:47,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:13:47,045 INFO L85 PathProgramCache]: Analyzing trace with hash -674977782, now seen corresponding path program 1 times [2022-11-20 12:13:47,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:13:47,046 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1220024447] [2022-11-20 12:13:47,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:13:47,047 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:13:47,047 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a7ba8e-776b-4861-9aee-0e05fbd33833/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:13:47,048 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a7ba8e-776b-4861-9aee-0e05fbd33833/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:13:47,054 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a7ba8e-776b-4861-9aee-0e05fbd33833/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-11-20 12:13:47,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:13:47,433 INFO L263 TraceCheckSpWp]: Trace formula consists of 575 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-20 12:13:47,437 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:13:47,582 INFO L134 CoverageAnalysis]: Checked inductivity of 498 backedges. 155 proven. 10 refuted. 0 times theorem prover too weak. 333 trivial. 0 not checked. [2022-11-20 12:13:47,583 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:13:48,196 INFO L134 CoverageAnalysis]: Checked inductivity of 498 backedges. 0 proven. 160 refuted. 0 times theorem prover too weak. 338 trivial. 0 not checked. [2022-11-20 12:13:48,196 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:13:48,196 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1220024447] [2022-11-20 12:13:48,196 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1220024447] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:13:48,196 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:13:48,197 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2022-11-20 12:13:48,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946570666] [2022-11-20 12:13:48,197 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:13:48,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-20 12:13:48,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:13:48,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-20 12:13:48,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=163, Unknown=0, NotChecked=0, Total=240 [2022-11-20 12:13:48,199 INFO L87 Difference]: Start difference. First operand 197 states and 212 transitions. Second operand has 16 states, 16 states have (on average 3.4375) internal successors, (55), 16 states have internal predecessors, (55), 2 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (12), 1 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-20 12:13:49,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:13:49,247 INFO L93 Difference]: Finished difference Result 229 states and 246 transitions. [2022-11-20 12:13:49,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-20 12:13:49,248 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.4375) internal successors, (55), 16 states have internal predecessors, (55), 2 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (12), 1 states have call predecessors, (12), 2 states have call successors, (12) Word has length 95 [2022-11-20 12:13:49,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:13:49,249 INFO L225 Difference]: With dead ends: 229 [2022-11-20 12:13:49,249 INFO L226 Difference]: Without dead ends: 204 [2022-11-20 12:13:49,250 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=252, Invalid=504, Unknown=0, NotChecked=0, Total=756 [2022-11-20 12:13:49,251 INFO L413 NwaCegarLoop]: 197 mSDtfsCounter, 109 mSDsluCounter, 1675 mSDsCounter, 0 mSdLazyCounter, 234 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 1872 SdHoareTripleChecker+Invalid, 273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-20 12:13:49,251 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 1872 Invalid, 273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 234 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-20 12:13:49,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2022-11-20 12:13:49,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 204. [2022-11-20 12:13:49,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 123 states have (on average 1.6829268292682926) internal successors, (207), 195 states have internal predecessors, (207), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-20 12:13:49,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 219 transitions. [2022-11-20 12:13:49,259 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 219 transitions. Word has length 95 [2022-11-20 12:13:49,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:13:49,259 INFO L495 AbstractCegarLoop]: Abstraction has 204 states and 219 transitions. [2022-11-20 12:13:49,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.4375) internal successors, (55), 16 states have internal predecessors, (55), 2 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (12), 1 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-20 12:13:49,260 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 219 transitions. [2022-11-20 12:13:49,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-11-20 12:13:49,262 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:13:49,262 INFO L195 NwaCegarLoop]: trace histogram [45, 6, 6, 6, 6, 6, 6, 6, 6, 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] [2022-11-20 12:13:49,283 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a7ba8e-776b-4861-9aee-0e05fbd33833/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-11-20 12:13:49,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a7ba8e-776b-4861-9aee-0e05fbd33833/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:13:49,483 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 72 more)] === [2022-11-20 12:13:49,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:13:49,484 INFO L85 PathProgramCache]: Analyzing trace with hash -1892288145, now seen corresponding path program 2 times [2022-11-20 12:13:49,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:13:49,485 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [727724364] [2022-11-20 12:13:49,485 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 12:13:49,485 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:13:49,486 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a7ba8e-776b-4861-9aee-0e05fbd33833/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:13:49,487 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a7ba8e-776b-4861-9aee-0e05fbd33833/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:13:49,488 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a7ba8e-776b-4861-9aee-0e05fbd33833/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-20 12:13:50,620 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 12:13:50,620 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:13:50,655 INFO L263 TraceCheckSpWp]: Trace formula consists of 828 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-20 12:13:50,660 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:13:50,846 INFO L134 CoverageAnalysis]: Checked inductivity of 1395 backedges. 305 proven. 15 refuted. 0 times theorem prover too weak. 1075 trivial. 0 not checked. [2022-11-20 12:13:50,846 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:13:51,564 INFO L134 CoverageAnalysis]: Checked inductivity of 1395 backedges. 305 proven. 15 refuted. 0 times theorem prover too weak. 1075 trivial. 0 not checked. [2022-11-20 12:13:51,565 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:13:51,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [727724364] [2022-11-20 12:13:51,565 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [727724364] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:13:51,565 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:13:51,565 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2022-11-20 12:13:51,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239120510] [2022-11-20 12:13:51,566 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:13:51,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-20 12:13:51,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:13:51,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-20 12:13:51,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=209, Unknown=0, NotChecked=0, Total=306 [2022-11-20 12:13:51,568 INFO L87 Difference]: Start difference. First operand 204 states and 219 transitions. Second operand has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 1 states have call successors, (6), 1 states have call predecessors, (6), 3 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2022-11-20 12:13:52,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:13:52,904 INFO L93 Difference]: Finished difference Result 221 states and 241 transitions. [2022-11-20 12:13:52,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-20 12:13:52,905 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 1 states have call successors, (6), 1 states have call predecessors, (6), 3 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) Word has length 118 [2022-11-20 12:13:52,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:13:52,907 INFO L225 Difference]: With dead ends: 221 [2022-11-20 12:13:52,907 INFO L226 Difference]: Without dead ends: 211 [2022-11-20 12:13:52,908 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 218 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=345, Invalid=647, Unknown=0, NotChecked=0, Total=992 [2022-11-20 12:13:52,909 INFO L413 NwaCegarLoop]: 191 mSDtfsCounter, 143 mSDsluCounter, 1493 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 1684 SdHoareTripleChecker+Invalid, 235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-20 12:13:52,909 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 1684 Invalid, 235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-20 12:13:52,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2022-11-20 12:13:52,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 211. [2022-11-20 12:13:52,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 211 states, 130 states have (on average 1.646153846153846) internal successors, (214), 202 states have internal predecessors, (214), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-20 12:13:52,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 226 transitions. [2022-11-20 12:13:52,916 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 226 transitions. Word has length 118 [2022-11-20 12:13:52,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:13:52,916 INFO L495 AbstractCegarLoop]: Abstraction has 211 states and 226 transitions. [2022-11-20 12:13:52,917 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 1 states have call successors, (6), 1 states have call predecessors, (6), 3 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2022-11-20 12:13:52,917 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 226 transitions. [2022-11-20 12:13:52,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-11-20 12:13:52,919 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:13:52,919 INFO L195 NwaCegarLoop]: trace histogram [52, 6, 6, 6, 6, 6, 6, 6, 6, 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] [2022-11-20 12:13:52,942 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a7ba8e-776b-4861-9aee-0e05fbd33833/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-11-20 12:13:53,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a7ba8e-776b-4861-9aee-0e05fbd33833/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:13:53,133 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 72 more)] === [2022-11-20 12:13:53,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:13:53,133 INFO L85 PathProgramCache]: Analyzing trace with hash -1703298198, now seen corresponding path program 3 times [2022-11-20 12:13:53,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:13:53,134 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [845536263] [2022-11-20 12:13:53,134 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 12:13:53,134 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:13:53,134 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a7ba8e-776b-4861-9aee-0e05fbd33833/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:13:53,135 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a7ba8e-776b-4861-9aee-0e05fbd33833/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:13:53,139 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a7ba8e-776b-4861-9aee-0e05fbd33833/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-11-20 12:13:53,521 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-20 12:13:53,522 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:13:53,532 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-20 12:13:53,535 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:13:53,692 WARN L859 $PredicateComparison]: unable to prove that (exists ((|zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| (_ BitVec 32))) (= (store |c_old(#valid)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| (_ bv1 1)) |c_#valid|)) is different from true [2022-11-20 12:13:53,810 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-20 12:13:53,810 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-11-20 12:13:53,838 INFO L134 CoverageAnalysis]: Checked inductivity of 1773 backedges. 853 proven. 0 refuted. 0 times theorem prover too weak. 796 trivial. 124 not checked. [2022-11-20 12:13:53,838 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:13:54,419 INFO L321 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2022-11-20 12:13:54,419 INFO L350 Elim1Store]: Elim1 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 16 treesize of output 15 [2022-11-20 12:13:54,452 INFO L134 CoverageAnalysis]: Checked inductivity of 1773 backedges. 853 proven. 124 refuted. 0 times theorem prover too weak. 796 trivial. 0 not checked. [2022-11-20 12:13:54,452 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:13:54,452 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [845536263] [2022-11-20 12:13:54,452 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [845536263] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:13:54,454 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:13:54,454 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 11 [2022-11-20 12:13:54,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252370446] [2022-11-20 12:13:54,455 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:13:54,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 12:13:54,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:13:54,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 12:13:54,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=91, Unknown=1, NotChecked=18, Total=132 [2022-11-20 12:13:54,457 INFO L87 Difference]: Start difference. First operand 211 states and 226 transitions. Second operand has 12 states, 11 states have (on average 4.454545454545454) internal successors, (49), 10 states have internal predecessors, (49), 2 states have call successors, (7), 3 states have call predecessors, (7), 4 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-20 12:13:55,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:13:55,996 INFO L93 Difference]: Finished difference Result 243 states and 262 transitions. [2022-11-20 12:13:55,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-20 12:13:55,997 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.454545454545454) internal successors, (49), 10 states have internal predecessors, (49), 2 states have call successors, (7), 3 states have call predecessors, (7), 4 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 125 [2022-11-20 12:13:55,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:13:56,000 INFO L225 Difference]: With dead ends: 243 [2022-11-20 12:13:56,000 INFO L226 Difference]: Without dead ends: 243 [2022-11-20 12:13:56,001 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 235 SyntacticMatches, 3 SemanticMatches, 18 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=92, Invalid=253, Unknown=1, NotChecked=34, Total=380 [2022-11-20 12:13:56,001 INFO L413 NwaCegarLoop]: 156 mSDtfsCounter, 116 mSDsluCounter, 917 mSDsCounter, 0 mSdLazyCounter, 608 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 1073 SdHoareTripleChecker+Invalid, 945 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 608 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 335 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-20 12:13:56,002 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 1073 Invalid, 945 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 608 Invalid, 0 Unknown, 335 Unchecked, 1.2s Time] [2022-11-20 12:13:56,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2022-11-20 12:13:56,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 209. [2022-11-20 12:13:56,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 130 states have (on average 1.6307692307692307) internal successors, (212), 200 states have internal predecessors, (212), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-20 12:13:56,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 224 transitions. [2022-11-20 12:13:56,009 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 224 transitions. Word has length 125 [2022-11-20 12:13:56,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:13:56,009 INFO L495 AbstractCegarLoop]: Abstraction has 209 states and 224 transitions. [2022-11-20 12:13:56,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.454545454545454) internal successors, (49), 10 states have internal predecessors, (49), 2 states have call successors, (7), 3 states have call predecessors, (7), 4 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-20 12:13:56,009 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 224 transitions. [2022-11-20 12:13:56,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-11-20 12:13:56,011 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:13:56,011 INFO L195 NwaCegarLoop]: trace histogram [52, 6, 6, 6, 6, 6, 6, 6, 6, 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] [2022-11-20 12:13:56,027 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a7ba8e-776b-4861-9aee-0e05fbd33833/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-11-20 12:13:56,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a7ba8e-776b-4861-9aee-0e05fbd33833/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:13:56,225 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 72 more)] === [2022-11-20 12:13:56,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:13:56,226 INFO L85 PathProgramCache]: Analyzing trace with hash -1703298197, now seen corresponding path program 1 times [2022-11-20 12:13:56,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:13:56,226 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1131168824] [2022-11-20 12:13:56,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:13:56,227 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:13:56,227 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a7ba8e-776b-4861-9aee-0e05fbd33833/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:13:56,228 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a7ba8e-776b-4861-9aee-0e05fbd33833/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:13:56,240 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a7ba8e-776b-4861-9aee-0e05fbd33833/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-11-20 12:13:57,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:13:57,474 INFO L263 TraceCheckSpWp]: Trace formula consists of 905 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-20 12:13:57,478 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:13:57,889 INFO L134 CoverageAnalysis]: Checked inductivity of 1773 backedges. 620 proven. 78 refuted. 0 times theorem prover too weak. 1075 trivial. 0 not checked. [2022-11-20 12:13:57,890 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:13:59,389 INFO L134 CoverageAnalysis]: Checked inductivity of 1773 backedges. 620 proven. 78 refuted. 0 times theorem prover too weak. 1075 trivial. 0 not checked. [2022-11-20 12:13:59,391 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:13:59,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1131168824] [2022-11-20 12:13:59,392 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1131168824] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:13:59,392 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:13:59,392 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 32 [2022-11-20 12:13:59,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204102760] [2022-11-20 12:13:59,393 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:13:59,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-20 12:13:59,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:13:59,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-20 12:13:59,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=286, Invalid=706, Unknown=0, NotChecked=0, Total=992 [2022-11-20 12:13:59,396 INFO L87 Difference]: Start difference. First operand 209 states and 224 transitions. Second operand has 32 states, 32 states have (on average 1.9375) internal successors, (62), 32 states have internal predecessors, (62), 1 states have call successors, (6), 1 states have call predecessors, (6), 3 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2022-11-20 12:14:04,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:14:04,370 INFO L93 Difference]: Finished difference Result 257 states and 303 transitions. [2022-11-20 12:14:04,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-11-20 12:14:04,371 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 1.9375) internal successors, (62), 32 states have internal predecessors, (62), 1 states have call successors, (6), 1 states have call predecessors, (6), 3 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) Word has length 125 [2022-11-20 12:14:04,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:14:04,373 INFO L225 Difference]: With dead ends: 257 [2022-11-20 12:14:04,374 INFO L226 Difference]: Without dead ends: 247 [2022-11-20 12:14:04,375 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 218 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 778 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=1195, Invalid=2345, Unknown=0, NotChecked=0, Total=3540 [2022-11-20 12:14:04,376 INFO L413 NwaCegarLoop]: 201 mSDtfsCounter, 488 mSDsluCounter, 2932 mSDsCounter, 0 mSdLazyCounter, 757 mSolverCounterSat, 144 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 488 SdHoareTripleChecker+Valid, 3133 SdHoareTripleChecker+Invalid, 901 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 144 IncrementalHoareTripleChecker+Valid, 757 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-20 12:14:04,376 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [488 Valid, 3133 Invalid, 901 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [144 Valid, 757 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-11-20 12:14:04,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2022-11-20 12:14:04,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 227. [2022-11-20 12:14:04,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 148 states have (on average 1.5743243243243243) internal successors, (233), 218 states have internal predecessors, (233), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-20 12:14:04,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 245 transitions. [2022-11-20 12:14:04,385 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 245 transitions. Word has length 125 [2022-11-20 12:14:04,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:14:04,386 INFO L495 AbstractCegarLoop]: Abstraction has 227 states and 245 transitions. [2022-11-20 12:14:04,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 1.9375) internal successors, (62), 32 states have internal predecessors, (62), 1 states have call successors, (6), 1 states have call predecessors, (6), 3 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2022-11-20 12:14:04,386 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 245 transitions. [2022-11-20 12:14:04,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-11-20 12:14:04,388 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:14:04,389 INFO L195 NwaCegarLoop]: trace histogram [66, 6, 6, 6, 6, 6, 6, 6, 6, 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] [2022-11-20 12:14:04,411 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a7ba8e-776b-4861-9aee-0e05fbd33833/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-11-20 12:14:04,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a7ba8e-776b-4861-9aee-0e05fbd33833/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:14:04,611 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 72 more)] === [2022-11-20 12:14:04,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:14:04,611 INFO L85 PathProgramCache]: Analyzing trace with hash -1448015925, now seen corresponding path program 2 times [2022-11-20 12:14:04,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:14:04,612 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1963510970] [2022-11-20 12:14:04,612 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 12:14:04,613 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:14:04,613 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a7ba8e-776b-4861-9aee-0e05fbd33833/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:14:04,614 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a7ba8e-776b-4861-9aee-0e05fbd33833/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:14:04,615 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a7ba8e-776b-4861-9aee-0e05fbd33833/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-11-20 12:14:05,998 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 12:14:05,998 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:14:06,040 INFO L263 TraceCheckSpWp]: Trace formula consists of 1059 conjuncts, 35 conjunts are in the unsatisfiable core [2022-11-20 12:14:06,046 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:14:07,034 INFO L134 CoverageAnalysis]: Checked inductivity of 2676 backedges. 1250 proven. 351 refuted. 0 times theorem prover too weak. 1075 trivial. 0 not checked. [2022-11-20 12:14:07,035 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:14:10,857 INFO L134 CoverageAnalysis]: Checked inductivity of 2676 backedges. 1250 proven. 351 refuted. 0 times theorem prover too weak. 1075 trivial. 0 not checked. [2022-11-20 12:14:10,858 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:14:10,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1963510970] [2022-11-20 12:14:10,858 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1963510970] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:14:10,858 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:14:10,858 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 60 [2022-11-20 12:14:10,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40846309] [2022-11-20 12:14:10,859 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:14:10,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2022-11-20 12:14:10,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:14:10,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2022-11-20 12:14:10,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=958, Invalid=2582, Unknown=0, NotChecked=0, Total=3540 [2022-11-20 12:14:10,862 INFO L87 Difference]: Start difference. First operand 227 states and 245 transitions. Second operand has 60 states, 60 states have (on average 1.5) internal successors, (90), 60 states have internal predecessors, (90), 1 states have call successors, (6), 1 states have call predecessors, (6), 3 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2022-11-20 12:14:31,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:14:31,463 INFO L93 Difference]: Finished difference Result 285 states and 345 transitions. [2022-11-20 12:14:31,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2022-11-20 12:14:31,464 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 60 states have (on average 1.5) internal successors, (90), 60 states have internal predecessors, (90), 1 states have call successors, (6), 1 states have call predecessors, (6), 3 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) Word has length 139 [2022-11-20 12:14:31,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:14:31,466 INFO L225 Difference]: With dead ends: 285 [2022-11-20 12:14:31,466 INFO L226 Difference]: Without dead ends: 275 [2022-11-20 12:14:31,470 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 319 GetRequests, 218 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2140 ImplicationChecksByTransitivity, 17.3s TimeCoverageRelationStatistics Valid=3526, Invalid=6980, Unknown=0, NotChecked=0, Total=10506 [2022-11-20 12:14:31,471 INFO L413 NwaCegarLoop]: 205 mSDtfsCounter, 1054 mSDsluCounter, 5836 mSDsCounter, 0 mSdLazyCounter, 2019 mSolverCounterSat, 439 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1054 SdHoareTripleChecker+Valid, 6041 SdHoareTripleChecker+Invalid, 2458 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 439 IncrementalHoareTripleChecker+Valid, 2019 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2022-11-20 12:14:31,471 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1054 Valid, 6041 Invalid, 2458 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [439 Valid, 2019 Invalid, 0 Unknown, 0 Unchecked, 6.8s Time] [2022-11-20 12:14:31,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2022-11-20 12:14:31,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 255. [2022-11-20 12:14:31,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 176 states have (on average 1.4829545454545454) internal successors, (261), 246 states have internal predecessors, (261), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-20 12:14:31,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 273 transitions. [2022-11-20 12:14:31,480 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 273 transitions. Word has length 139 [2022-11-20 12:14:31,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:14:31,480 INFO L495 AbstractCegarLoop]: Abstraction has 255 states and 273 transitions. [2022-11-20 12:14:31,481 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 60 states have (on average 1.5) internal successors, (90), 60 states have internal predecessors, (90), 1 states have call successors, (6), 1 states have call predecessors, (6), 3 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2022-11-20 12:14:31,481 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 273 transitions. [2022-11-20 12:14:31,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-11-20 12:14:31,483 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:14:31,483 INFO L195 NwaCegarLoop]: trace histogram [94, 6, 6, 6, 6, 6, 6, 6, 6, 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] [2022-11-20 12:14:31,504 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a7ba8e-776b-4861-9aee-0e05fbd33833/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-11-20 12:14:31,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a7ba8e-776b-4861-9aee-0e05fbd33833/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:14:31,699 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 72 more)] === [2022-11-20 12:14:31,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:14:31,699 INFO L85 PathProgramCache]: Analyzing trace with hash -16897909, now seen corresponding path program 3 times [2022-11-20 12:14:31,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:14:31,700 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [163474573] [2022-11-20 12:14:31,700 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 12:14:31,700 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:14:31,700 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a7ba8e-776b-4861-9aee-0e05fbd33833/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:14:31,701 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a7ba8e-776b-4861-9aee-0e05fbd33833/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:14:31,702 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a7ba8e-776b-4861-9aee-0e05fbd33833/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-11-20 12:14:32,218 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-20 12:14:32,218 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:14:32,232 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 28 conjunts are in the unsatisfiable core [2022-11-20 12:14:32,237 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:14:32,250 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-20 12:14:32,618 WARN L859 $PredicateComparison]: unable to prove that (exists ((|zalloc_or_die_calloc_model_~ptr~0#1.base| (_ BitVec 32))) (and (= (select |c_old(#valid)| |zalloc_or_die_calloc_model_~ptr~0#1.base|) (_ bv0 1)) (exists ((v_ArrVal_2255 (_ BitVec 32))) (= |c_#length| (store |c_old(#length)| |zalloc_or_die_calloc_model_~ptr~0#1.base| v_ArrVal_2255))))) is different from true [2022-11-20 12:14:33,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:14:33,143 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-20 12:14:33,158 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-20 12:14:33,158 INFO L350 Elim1Store]: Elim1 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 13 treesize of output 13 [2022-11-20 12:14:33,192 INFO L134 CoverageAnalysis]: Checked inductivity of 5070 backedges. 2365 proven. 0 refuted. 0 times theorem prover too weak. 2203 trivial. 502 not checked. [2022-11-20 12:14:33,193 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:14:33,539 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:14:33,539 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [163474573] [2022-11-20 12:14:33,539 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [163474573] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:14:33,539 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1803593152] [2022-11-20 12:14:33,539 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 12:14:33,539 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-20 12:14:33,540 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a7ba8e-776b-4861-9aee-0e05fbd33833/bin/uautomizer-ug76WZFUDN/cvc4 [2022-11-20 12:14:33,541 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a7ba8e-776b-4861-9aee-0e05fbd33833/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-20 12:14:33,542 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a7ba8e-776b-4861-9aee-0e05fbd33833/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt (14)] Waiting until timeout for monitored process [2022-11-20 12:14:34,351 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-20 12:14:34,351 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:14:34,374 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 34 conjunts are in the unsatisfiable core [2022-11-20 12:14:34,379 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:14:34,416 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-20 12:14:34,603 WARN L859 $PredicateComparison]: unable to prove that (exists ((|zalloc_or_die_calloc_model_~ptr~0#1.base| (_ BitVec 32))) (and (exists ((v_ArrVal_2836 (_ BitVec 32))) (= (store |c_old(#length)| |zalloc_or_die_calloc_model_~ptr~0#1.base| v_ArrVal_2836) |c_#length|)) (= (select |c_old(#valid)| |zalloc_or_die_calloc_model_~ptr~0#1.base|) (_ bv0 1)))) is different from true [2022-11-20 12:14:35,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:14:35,082 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-20 12:14:35,093 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-20 12:14:35,093 INFO L350 Elim1Store]: Elim1 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 13 treesize of output 13 [2022-11-20 12:14:35,103 INFO L134 CoverageAnalysis]: Checked inductivity of 5070 backedges. 2365 proven. 0 refuted. 0 times theorem prover too weak. 2203 trivial. 502 not checked. [2022-11-20 12:14:35,103 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:14:35,320 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1803593152] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:14:35,320 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:14:35,320 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 12 [2022-11-20 12:14:35,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450695346] [2022-11-20 12:14:35,320 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:14:35,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-20 12:14:35,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:14:35,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-20 12:14:35,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=131, Unknown=2, NotChecked=46, Total=210 [2022-11-20 12:14:35,322 INFO L87 Difference]: Start difference. First operand 255 states and 273 transitions. Second operand has 13 states, 11 states have (on average 4.454545454545454) internal successors, (49), 10 states have internal predecessors, (49), 2 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-20 12:14:37,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:14:37,564 INFO L93 Difference]: Finished difference Result 287 states and 309 transitions. [2022-11-20 12:14:37,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-20 12:14:37,565 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 4.454545454545454) internal successors, (49), 10 states have internal predecessors, (49), 2 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 167 [2022-11-20 12:14:37,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:14:37,568 INFO L225 Difference]: With dead ends: 287 [2022-11-20 12:14:37,568 INFO L226 Difference]: Without dead ends: 287 [2022-11-20 12:14:37,568 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 342 GetRequests, 322 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=52, Invalid=295, Unknown=3, NotChecked=70, Total=420 [2022-11-20 12:14:37,569 INFO L413 NwaCegarLoop]: 115 mSDtfsCounter, 188 mSDsluCounter, 706 mSDsCounter, 0 mSdLazyCounter, 834 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 188 SdHoareTripleChecker+Valid, 821 SdHoareTripleChecker+Invalid, 1283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 834 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 440 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-11-20 12:14:37,569 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [188 Valid, 821 Invalid, 1283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 834 Invalid, 0 Unknown, 440 Unchecked, 1.7s Time] [2022-11-20 12:14:37,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2022-11-20 12:14:37,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 253. [2022-11-20 12:14:37,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 253 states, 176 states have (on average 1.4715909090909092) internal successors, (259), 244 states have internal predecessors, (259), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-20 12:14:37,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 271 transitions. [2022-11-20 12:14:37,578 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 271 transitions. Word has length 167 [2022-11-20 12:14:37,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:14:37,579 INFO L495 AbstractCegarLoop]: Abstraction has 253 states and 271 transitions. [2022-11-20 12:14:37,579 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 4.454545454545454) internal successors, (49), 10 states have internal predecessors, (49), 2 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-20 12:14:37,579 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 271 transitions. [2022-11-20 12:14:37,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2022-11-20 12:14:37,581 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:14:37,581 INFO L195 NwaCegarLoop]: trace histogram [94, 6, 6, 6, 6, 6, 6, 6, 6, 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] [2022-11-20 12:14:37,591 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a7ba8e-776b-4861-9aee-0e05fbd33833/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt (14)] Forceful destruction successful, exit code 0 [2022-11-20 12:14:37,796 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a7ba8e-776b-4861-9aee-0e05fbd33833/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-11-20 12:14:37,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a7ba8e-776b-4861-9aee-0e05fbd33833/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a7ba8e-776b-4861-9aee-0e05fbd33833/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:14:37,988 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 72 more)] === [2022-11-20 12:14:37,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:14:37,988 INFO L85 PathProgramCache]: Analyzing trace with hash 940977899, now seen corresponding path program 1 times [2022-11-20 12:14:37,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:14:37,989 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [198370325] [2022-11-20 12:14:37,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:14:37,989 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:14:37,989 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a7ba8e-776b-4861-9aee-0e05fbd33833/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:14:37,990 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a7ba8e-776b-4861-9aee-0e05fbd33833/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:14:37,992 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a7ba8e-776b-4861-9aee-0e05fbd33833/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-11-20 12:14:39,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:14:39,600 INFO L263 TraceCheckSpWp]: Trace formula consists of 1381 conjuncts, 63 conjunts are in the unsatisfiable core [2022-11-20 12:14:39,604 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:14:42,891 INFO L134 CoverageAnalysis]: Checked inductivity of 5070 backedges. 2510 proven. 1485 refuted. 0 times theorem prover too weak. 1075 trivial. 0 not checked. [2022-11-20 12:14:42,891 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:14:54,802 INFO L134 CoverageAnalysis]: Checked inductivity of 5070 backedges. 2510 proven. 1485 refuted. 0 times theorem prover too weak. 1075 trivial. 0 not checked. [2022-11-20 12:14:54,802 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:14:54,802 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [198370325] [2022-11-20 12:14:54,802 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [198370325] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:14:54,803 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:14:54,803 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [59, 59] total 116 [2022-11-20 12:14:54,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774534064] [2022-11-20 12:14:54,803 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:14:54,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 116 states [2022-11-20 12:14:54,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:14:54,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 116 interpolants. [2022-11-20 12:14:54,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3478, Invalid=9862, Unknown=0, NotChecked=0, Total=13340 [2022-11-20 12:14:54,811 INFO L87 Difference]: Start difference. First operand 253 states and 271 transitions. Second operand has 116 states, 116 states have (on average 1.2758620689655173) internal successors, (148), 116 states have internal predecessors, (148), 1 states have call successors, (6), 1 states have call predecessors, (6), 3 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2022-11-20 12:16:46,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:16:46,008 INFO L93 Difference]: Finished difference Result 339 states and 427 transitions. [2022-11-20 12:16:46,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 130 states. [2022-11-20 12:16:46,010 INFO L78 Accepts]: Start accepts. Automaton has has 116 states, 116 states have (on average 1.2758620689655173) internal successors, (148), 116 states have internal predecessors, (148), 1 states have call successors, (6), 1 states have call predecessors, (6), 3 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) Word has length 169 [2022-11-20 12:16:46,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:16:46,012 INFO L225 Difference]: With dead ends: 339 [2022-11-20 12:16:46,013 INFO L226 Difference]: Without dead ends: 329 [2022-11-20 12:16:46,020 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 407 GetRequests, 222 SyntacticMatches, 0 SemanticMatches, 185 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6550 ImplicationChecksByTransitivity, 100.2s TimeCoverageRelationStatistics Valid=11646, Invalid=23136, Unknown=0, NotChecked=0, Total=34782 [2022-11-20 12:16:46,021 INFO L413 NwaCegarLoop]: 203 mSDtfsCounter, 3106 mSDsluCounter, 11606 mSDsCounter, 0 mSdLazyCounter, 5347 mSolverCounterSat, 1856 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3106 SdHoareTripleChecker+Valid, 11809 SdHoareTripleChecker+Invalid, 7203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1856 IncrementalHoareTripleChecker+Valid, 5347 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.2s IncrementalHoareTripleChecker+Time [2022-11-20 12:16:46,021 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3106 Valid, 11809 Invalid, 7203 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1856 Valid, 5347 Invalid, 0 Unknown, 0 Unchecked, 23.2s Time] [2022-11-20 12:16:46,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2022-11-20 12:16:46,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 309. [2022-11-20 12:16:46,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 309 states, 232 states have (on average 1.3577586206896552) internal successors, (315), 300 states have internal predecessors, (315), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-20 12:16:46,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 327 transitions. [2022-11-20 12:16:46,044 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 327 transitions. Word has length 169 [2022-11-20 12:16:46,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:16:46,044 INFO L495 AbstractCegarLoop]: Abstraction has 309 states and 327 transitions. [2022-11-20 12:16:46,045 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 116 states, 116 states have (on average 1.2758620689655173) internal successors, (148), 116 states have internal predecessors, (148), 1 states have call successors, (6), 1 states have call predecessors, (6), 3 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2022-11-20 12:16:46,045 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 327 transitions. [2022-11-20 12:16:46,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2022-11-20 12:16:46,048 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:16:46,048 INFO L195 NwaCegarLoop]: trace histogram [150, 6, 6, 6, 6, 6, 6, 6, 6, 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] [2022-11-20 12:16:46,078 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a7ba8e-776b-4861-9aee-0e05fbd33833/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2022-11-20 12:16:46,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a7ba8e-776b-4861-9aee-0e05fbd33833/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:16:46,271 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 72 more)] === [2022-11-20 12:16:46,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:16:46,271 INFO L85 PathProgramCache]: Analyzing trace with hash -1119866773, now seen corresponding path program 2 times [2022-11-20 12:16:46,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:16:46,272 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1095477591] [2022-11-20 12:16:46,272 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 12:16:46,272 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:16:46,272 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a7ba8e-776b-4861-9aee-0e05fbd33833/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:16:46,273 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a7ba8e-776b-4861-9aee-0e05fbd33833/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:16:46,274 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a7ba8e-776b-4861-9aee-0e05fbd33833/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-11-20 12:16:48,467 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 12:16:48,467 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:16:48,543 INFO L263 TraceCheckSpWp]: Trace formula consists of 1997 conjuncts, 119 conjunts are in the unsatisfiable core [2022-11-20 12:16:48,549 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:17:02,545 INFO L134 CoverageAnalysis]: Checked inductivity of 12210 backedges. 5030 proven. 6105 refuted. 0 times theorem prover too weak. 1075 trivial. 0 not checked. [2022-11-20 12:17:02,545 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:17:08,559 WARN L233 SmtUtils]: Spent 5.99s on a formula simplification that was a NOOP. DAG size: 351 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-20 12:17:42,036 INFO L134 CoverageAnalysis]: Checked inductivity of 12210 backedges. 5030 proven. 6105 refuted. 0 times theorem prover too weak. 1075 trivial. 0 not checked. [2022-11-20 12:17:42,037 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:17:42,037 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1095477591] [2022-11-20 12:17:42,037 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1095477591] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:17:42,037 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:17:42,038 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [115, 115] total 228 [2022-11-20 12:17:42,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153280275] [2022-11-20 12:17:42,038 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:17:42,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 228 states [2022-11-20 12:17:42,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:17:42,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 228 interpolants. [2022-11-20 12:17:42,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7969, Invalid=43787, Unknown=0, NotChecked=0, Total=51756 [2022-11-20 12:17:42,049 INFO L87 Difference]: Start difference. First operand 309 states and 327 transitions. Second operand has 228 states, 228 states have (on average 1.1403508771929824) internal successors, (260), 228 states have internal predecessors, (260), 1 states have call successors, (6), 1 states have call predecessors, (6), 3 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2022-11-20 12:19:30,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:19:30,322 INFO L93 Difference]: Finished difference Result 348 states and 389 transitions. [2022-11-20 12:19:30,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 139 states. [2022-11-20 12:19:30,325 INFO L78 Accepts]: Start accepts. Automaton has has 228 states, 228 states have (on average 1.1403508771929824) internal successors, (260), 228 states have internal predecessors, (260), 1 states have call successors, (6), 1 states have call predecessors, (6), 3 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) Word has length 225 [2022-11-20 12:19:30,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:19:30,327 INFO L225 Difference]: With dead ends: 348 [2022-11-20 12:19:30,327 INFO L226 Difference]: Without dead ends: 338 [2022-11-20 12:19:30,334 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 472 GetRequests, 222 SyntacticMatches, 0 SemanticMatches, 250 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19225 ImplicationChecksByTransitivity, 55.7s TimeCoverageRelationStatistics Valid=10995, Invalid=52257, Unknown=0, NotChecked=0, Total=63252 [2022-11-20 12:19:30,335 INFO L413 NwaCegarLoop]: 203 mSDtfsCounter, 2703 mSDsluCounter, 23778 mSDsCounter, 0 mSdLazyCounter, 16550 mSolverCounterSat, 1249 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 84.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2703 SdHoareTripleChecker+Valid, 23981 SdHoareTripleChecker+Invalid, 17799 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 1249 IncrementalHoareTripleChecker+Valid, 16550 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 96.8s IncrementalHoareTripleChecker+Time [2022-11-20 12:19:30,335 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2703 Valid, 23981 Invalid, 17799 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [1249 Valid, 16550 Invalid, 0 Unknown, 0 Unchecked, 96.8s Time] [2022-11-20 12:19:30,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2022-11-20 12:19:30,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 318. [2022-11-20 12:19:30,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 318 states, 241 states have (on average 1.3443983402489628) internal successors, (324), 309 states have internal predecessors, (324), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-20 12:19:30,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318 states to 318 states and 336 transitions. [2022-11-20 12:19:30,347 INFO L78 Accepts]: Start accepts. Automaton has 318 states and 336 transitions. Word has length 225 [2022-11-20 12:19:30,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:19:30,348 INFO L495 AbstractCegarLoop]: Abstraction has 318 states and 336 transitions. [2022-11-20 12:19:30,348 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 228 states, 228 states have (on average 1.1403508771929824) internal successors, (260), 228 states have internal predecessors, (260), 1 states have call successors, (6), 1 states have call predecessors, (6), 3 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2022-11-20 12:19:30,349 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states and 336 transitions. [2022-11-20 12:19:30,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2022-11-20 12:19:30,350 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:19:30,351 INFO L195 NwaCegarLoop]: trace histogram [159, 6, 6, 6, 6, 6, 6, 6, 6, 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] [2022-11-20 12:19:30,397 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a7ba8e-776b-4861-9aee-0e05fbd33833/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-11-20 12:19:30,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a7ba8e-776b-4861-9aee-0e05fbd33833/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:19:30,575 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 72 more)] === [2022-11-20 12:19:30,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:19:30,575 INFO L85 PathProgramCache]: Analyzing trace with hash -1955142928, now seen corresponding path program 3 times [2022-11-20 12:19:30,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:19:30,576 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [828155430] [2022-11-20 12:19:30,576 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 12:19:30,577 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:19:30,577 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a7ba8e-776b-4861-9aee-0e05fbd33833/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:19:30,578 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a7ba8e-776b-4861-9aee-0e05fbd33833/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:19:30,579 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a7ba8e-776b-4861-9aee-0e05fbd33833/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-11-20 12:19:31,586 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-11-20 12:19:31,586 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:19:31,605 INFO L263 TraceCheckSpWp]: Trace formula consists of 373 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-20 12:19:31,609 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:19:31,806 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_5312 (_ BitVec 1))) (= (store |c_old(#valid)| |c_zalloc_or_die_calloc_model_~ptr~0#1.base| v_ArrVal_5312) |c_#valid|)) is different from true [2022-11-20 12:19:31,852 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_5312 (_ BitVec 1))) (= (store |c_old(#valid)| |c_zalloc_or_die_calloc_model_#res#1.base| v_ArrVal_5312) |c_#valid|)) is different from true [2022-11-20 12:19:31,859 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_5312 (_ BitVec 1))) (= |c_#valid| (store |c_old(#valid)| |c_zalloc_or_die_~ptr~1#1.base| v_ArrVal_5312))) is different from true [2022-11-20 12:19:31,866 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_5312 (_ BitVec 1))) (= |c_#valid| (store |c_old(#valid)| |c_zalloc_or_die_#res#1.base| v_ArrVal_5312))) is different from true [2022-11-20 12:19:31,894 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-20 12:19:31,894 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 24 [2022-11-20 12:19:32,005 WARN L859 $PredicateComparison]: unable to prove that (exists ((|zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| (_ BitVec 32))) (= (store |c_old(#valid)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| (_ bv1 1)) |c_#valid|)) is different from true [2022-11-20 12:19:32,499 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-20 12:19:32,500 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 28 [2022-11-20 12:19:32,640 INFO L134 CoverageAnalysis]: Checked inductivity of 13650 backedges. 3797 proven. 0 refuted. 0 times theorem prover too weak. 7591 trivial. 2262 not checked. [2022-11-20 12:19:32,640 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:19:35,620 INFO L321 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2022-11-20 12:19:35,620 INFO L350 Elim1Store]: Elim1 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 16 treesize of output 15 [2022-11-20 12:19:35,641 INFO L134 CoverageAnalysis]: Checked inductivity of 13650 backedges. 3797 proven. 2262 refuted. 0 times theorem prover too weak. 7591 trivial. 0 not checked. [2022-11-20 12:19:35,642 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:19:35,642 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [828155430] [2022-11-20 12:19:35,642 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [828155430] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:19:35,642 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:19:35,642 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 25 [2022-11-20 12:19:35,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105091610] [2022-11-20 12:19:35,643 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:19:35,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-20 12:19:35,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:19:35,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-20 12:19:35,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=368, Unknown=5, NotChecked=210, Total=650 [2022-11-20 12:19:35,644 INFO L87 Difference]: Start difference. First operand 318 states and 336 transitions. Second operand has 26 states, 24 states have (on average 2.9166666666666665) internal successors, (70), 20 states have internal predecessors, (70), 3 states have call successors, (8), 3 states have call predecessors, (8), 6 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-20 12:19:37,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:19:37,986 INFO L93 Difference]: Finished difference Result 358 states and 382 transitions. [2022-11-20 12:19:37,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-20 12:19:37,987 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 24 states have (on average 2.9166666666666665) internal successors, (70), 20 states have internal predecessors, (70), 3 states have call successors, (8), 3 states have call predecessors, (8), 6 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) Word has length 234 [2022-11-20 12:19:37,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:19:37,989 INFO L225 Difference]: With dead ends: 358 [2022-11-20 12:19:37,990 INFO L226 Difference]: Without dead ends: 358 [2022-11-20 12:19:37,990 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 476 GetRequests, 440 SyntacticMatches, 5 SemanticMatches, 31 ConstructedPredicates, 5 IntricatePredicates, 1 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=133, Invalid=638, Unknown=5, NotChecked=280, Total=1056 [2022-11-20 12:19:37,991 INFO L413 NwaCegarLoop]: 148 mSDtfsCounter, 276 mSDsluCounter, 1631 mSDsCounter, 0 mSdLazyCounter, 748 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 276 SdHoareTripleChecker+Valid, 1779 SdHoareTripleChecker+Invalid, 2269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 748 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1507 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-11-20 12:19:37,992 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [276 Valid, 1779 Invalid, 2269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 748 Invalid, 0 Unknown, 1507 Unchecked, 1.7s Time] [2022-11-20 12:19:37,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2022-11-20 12:19:37,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 324. [2022-11-20 12:19:38,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 324 states, 246 states have (on average 1.3373983739837398) internal successors, (329), 313 states have internal predecessors, (329), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-20 12:19:38,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 324 states to 324 states and 345 transitions. [2022-11-20 12:19:38,003 INFO L78 Accepts]: Start accepts. Automaton has 324 states and 345 transitions. Word has length 234 [2022-11-20 12:19:38,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:19:38,004 INFO L495 AbstractCegarLoop]: Abstraction has 324 states and 345 transitions. [2022-11-20 12:19:38,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 24 states have (on average 2.9166666666666665) internal successors, (70), 20 states have internal predecessors, (70), 3 states have call successors, (8), 3 states have call predecessors, (8), 6 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-20 12:19:38,004 INFO L276 IsEmpty]: Start isEmpty. Operand 324 states and 345 transitions. [2022-11-20 12:19:38,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2022-11-20 12:19:38,006 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:19:38,006 INFO L195 NwaCegarLoop]: trace histogram [159, 6, 6, 6, 6, 6, 6, 6, 6, 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] [2022-11-20 12:19:38,024 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a7ba8e-776b-4861-9aee-0e05fbd33833/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2022-11-20 12:19:38,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a7ba8e-776b-4861-9aee-0e05fbd33833/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:19:38,223 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 72 more)] === [2022-11-20 12:19:38,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:19:38,223 INFO L85 PathProgramCache]: Analyzing trace with hash -1955142927, now seen corresponding path program 1 times [2022-11-20 12:19:38,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:19:38,224 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [615206470] [2022-11-20 12:19:38,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:19:38,224 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:19:38,225 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a7ba8e-776b-4861-9aee-0e05fbd33833/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:19:38,226 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a7ba8e-776b-4861-9aee-0e05fbd33833/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:19:38,230 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a7ba8e-776b-4861-9aee-0e05fbd33833/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-11-20 12:19:41,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:41,926 INFO L263 TraceCheckSpWp]: Trace formula consists of 2096 conjuncts, 44 conjunts are in the unsatisfiable core [2022-11-20 12:19:41,932 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:19:41,944 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-20 12:19:41,953 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-20 12:19:42,428 WARN L859 $PredicateComparison]: unable to prove that (exists ((|zalloc_or_die_calloc_model_~ptr~0#1.base| (_ BitVec 32))) (and (= (select |c_old(#valid)| |zalloc_or_die_calloc_model_~ptr~0#1.base|) (_ bv0 1)) (exists ((v_ArrVal_6292 (_ BitVec 32))) (= (store |c_old(#length)| |zalloc_or_die_calloc_model_~ptr~0#1.base| v_ArrVal_6292) |c_#length|)))) is different from true [2022-11-20 12:19:42,612 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:19:42,613 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-20 12:19:42,630 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-20 12:19:42,631 INFO L350 Elim1Store]: Elim1 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 13 treesize of output 13 [2022-11-20 12:19:42,744 WARN L859 $PredicateComparison]: unable to prove that (exists ((|zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| (_ BitVec 32))) (= |c_#length| (store |c_old(#length)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| |c_zalloc_or_die_#in~size#1|))) is different from true [2022-11-20 12:19:43,358 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-20 12:19:43,360 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 18 [2022-11-20 12:19:43,496 INFO L134 CoverageAnalysis]: Checked inductivity of 13650 backedges. 3797 proven. 1 refuted. 0 times theorem prover too weak. 7590 trivial. 2262 not checked. [2022-11-20 12:19:43,496 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:19:44,248 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:19:44,248 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [615206470] [2022-11-20 12:19:44,248 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [615206470] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:19:44,248 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1948404214] [2022-11-20 12:19:44,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:19:44,249 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-20 12:19:44,249 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a7ba8e-776b-4861-9aee-0e05fbd33833/bin/uautomizer-ug76WZFUDN/cvc4 [2022-11-20 12:19:44,250 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a7ba8e-776b-4861-9aee-0e05fbd33833/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-20 12:19:44,252 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a7ba8e-776b-4861-9aee-0e05fbd33833/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt (19)] Waiting until timeout for monitored process [2022-11-20 12:20:15,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:20:17,276 INFO L263 TraceCheckSpWp]: Trace formula consists of 2096 conjuncts, 50 conjunts are in the unsatisfiable core [2022-11-20 12:20:17,282 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:20:17,296 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-20 12:20:17,307 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-20 12:20:17,557 WARN L859 $PredicateComparison]: unable to prove that (exists ((|zalloc_or_die_calloc_model_~ptr~0#1.base| (_ BitVec 32))) (and (= (select |c_old(#valid)| |zalloc_or_die_calloc_model_~ptr~0#1.base|) (_ bv0 1)) (exists ((v_ArrVal_7269 (_ BitVec 32))) (= |c_#length| (store |c_old(#length)| |zalloc_or_die_calloc_model_~ptr~0#1.base| v_ArrVal_7269))))) is different from true [2022-11-20 12:20:17,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:20:17,701 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-20 12:20:17,716 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-20 12:20:17,716 INFO L350 Elim1Store]: Elim1 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 13 treesize of output 13 [2022-11-20 12:20:18,342 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-20 12:20:18,343 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 18 [2022-11-20 12:20:18,393 INFO L134 CoverageAnalysis]: Checked inductivity of 13650 backedges. 3797 proven. 1 refuted. 0 times theorem prover too weak. 7590 trivial. 2262 not checked. [2022-11-20 12:20:18,393 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:20:19,032 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1948404214] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:20:19,032 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:20:19,032 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 15 [2022-11-20 12:20:19,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452375322] [2022-11-20 12:20:19,033 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:20:19,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-20 12:20:19,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:20:19,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-20 12:20:19,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=177, Unknown=3, NotChecked=84, Total=306 [2022-11-20 12:20:19,034 INFO L87 Difference]: Start difference. First operand 324 states and 345 transitions. Second operand has 16 states, 14 states have (on average 4.285714285714286) internal successors, (60), 13 states have internal predecessors, (60), 3 states have call successors, (6), 3 states have call predecessors, (6), 5 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-20 12:20:21,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:20:21,811 INFO L93 Difference]: Finished difference Result 324 states and 344 transitions. [2022-11-20 12:20:21,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-20 12:20:21,812 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 4.285714285714286) internal successors, (60), 13 states have internal predecessors, (60), 3 states have call successors, (6), 3 states have call predecessors, (6), 5 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) Word has length 234 [2022-11-20 12:20:21,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:20:21,814 INFO L225 Difference]: With dead ends: 324 [2022-11-20 12:20:21,814 INFO L226 Difference]: Without dead ends: 324 [2022-11-20 12:20:21,815 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 479 GetRequests, 457 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=61, Invalid=327, Unknown=4, NotChecked=114, Total=506 [2022-11-20 12:20:21,815 INFO L413 NwaCegarLoop]: 176 mSDtfsCounter, 1 mSDsluCounter, 935 mSDsCounter, 0 mSdLazyCounter, 786 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1111 SdHoareTripleChecker+Invalid, 1398 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 786 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 603 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-11-20 12:20:21,816 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1111 Invalid, 1398 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 786 Invalid, 0 Unknown, 603 Unchecked, 2.0s Time] [2022-11-20 12:20:21,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2022-11-20 12:20:21,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 324. [2022-11-20 12:20:21,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 324 states, 246 states have (on average 1.3333333333333333) internal successors, (328), 313 states have internal predecessors, (328), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-20 12:20:21,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 324 states to 324 states and 344 transitions. [2022-11-20 12:20:21,824 INFO L78 Accepts]: Start accepts. Automaton has 324 states and 344 transitions. Word has length 234 [2022-11-20 12:20:21,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:20:21,825 INFO L495 AbstractCegarLoop]: Abstraction has 324 states and 344 transitions. [2022-11-20 12:20:21,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 4.285714285714286) internal successors, (60), 13 states have internal predecessors, (60), 3 states have call successors, (6), 3 states have call predecessors, (6), 5 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-20 12:20:21,825 INFO L276 IsEmpty]: Start isEmpty. Operand 324 states and 344 transitions. [2022-11-20 12:20:21,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2022-11-20 12:20:21,827 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:20:21,827 INFO L195 NwaCegarLoop]: trace histogram [159, 6, 6, 6, 6, 6, 6, 6, 6, 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, 1] [2022-11-20 12:20:21,995 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a7ba8e-776b-4861-9aee-0e05fbd33833/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt (19)] Forceful destruction successful, exit code 0 [2022-11-20 12:20:22,076 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a7ba8e-776b-4861-9aee-0e05fbd33833/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Ended with exit code 0 [2022-11-20 12:20:22,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a7ba8e-776b-4861-9aee-0e05fbd33833/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a7ba8e-776b-4861-9aee-0e05fbd33833/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:20:22,249 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 72 more)] === [2022-11-20 12:20:22,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:20:22,250 INFO L85 PathProgramCache]: Analyzing trace with hash -1611455971, now seen corresponding path program 1 times [2022-11-20 12:20:22,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:20:22,251 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [416986013] [2022-11-20 12:20:22,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:20:22,251 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:20:22,251 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a7ba8e-776b-4861-9aee-0e05fbd33833/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:20:22,252 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a7ba8e-776b-4861-9aee-0e05fbd33833/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:20:22,260 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a7ba8e-776b-4861-9aee-0e05fbd33833/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-11-20 12:20:24,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:20:25,069 INFO L263 TraceCheckSpWp]: Trace formula consists of 2116 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-20 12:20:25,074 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:20:25,291 INFO L134 CoverageAnalysis]: Checked inductivity of 13650 backedges. 264 proven. 1175 refuted. 0 times theorem prover too weak. 12211 trivial. 0 not checked. [2022-11-20 12:20:25,291 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:20:25,407 INFO L350 Elim1Store]: Elim1 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 8 treesize of output 6 [2022-11-20 12:20:26,047 INFO L134 CoverageAnalysis]: Checked inductivity of 13650 backedges. 264 proven. 1175 refuted. 0 times theorem prover too weak. 12211 trivial. 0 not checked. [2022-11-20 12:20:26,047 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:20:26,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [416986013] [2022-11-20 12:20:26,047 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [416986013] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:20:26,047 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:20:26,048 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2022-11-20 12:20:26,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078127995] [2022-11-20 12:20:26,048 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:20:26,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-20 12:20:26,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:20:26,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-20 12:20:26,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=262, Unknown=0, NotChecked=0, Total=306 [2022-11-20 12:20:26,050 INFO L87 Difference]: Start difference. First operand 324 states and 344 transitions. Second operand has 18 states, 17 states have (on average 3.176470588235294) internal successors, (54), 16 states have internal predecessors, (54), 3 states have call successors, (8), 1 states have call predecessors, (8), 3 states have return successors, (9), 5 states have call predecessors, (9), 3 states have call successors, (9) [2022-11-20 12:20:29,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:20:29,317 INFO L93 Difference]: Finished difference Result 342 states and 369 transitions. [2022-11-20 12:20:29,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-20 12:20:29,318 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 3.176470588235294) internal successors, (54), 16 states have internal predecessors, (54), 3 states have call successors, (8), 1 states have call predecessors, (8), 3 states have return successors, (9), 5 states have call predecessors, (9), 3 states have call successors, (9) Word has length 237 [2022-11-20 12:20:29,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:20:29,320 INFO L225 Difference]: With dead ends: 342 [2022-11-20 12:20:29,320 INFO L226 Difference]: Without dead ends: 342 [2022-11-20 12:20:29,321 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 480 GetRequests, 458 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=92, Invalid=460, Unknown=0, NotChecked=0, Total=552 [2022-11-20 12:20:29,321 INFO L413 NwaCegarLoop]: 154 mSDtfsCounter, 828 mSDsluCounter, 1161 mSDsCounter, 0 mSdLazyCounter, 502 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 829 SdHoareTripleChecker+Valid, 1315 SdHoareTripleChecker+Invalid, 522 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 502 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-11-20 12:20:29,322 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [829 Valid, 1315 Invalid, 522 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 502 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-11-20 12:20:29,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states. [2022-11-20 12:20:29,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 323. [2022-11-20 12:20:29,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 323 states, 246 states have (on average 1.329268292682927) internal successors, (327), 312 states have internal predecessors, (327), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-20 12:20:29,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 343 transitions. [2022-11-20 12:20:29,342 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 343 transitions. Word has length 237 [2022-11-20 12:20:29,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:20:29,342 INFO L495 AbstractCegarLoop]: Abstraction has 323 states and 343 transitions. [2022-11-20 12:20:29,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 3.176470588235294) internal successors, (54), 16 states have internal predecessors, (54), 3 states have call successors, (8), 1 states have call predecessors, (8), 3 states have return successors, (9), 5 states have call predecessors, (9), 3 states have call successors, (9) [2022-11-20 12:20:29,343 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 343 transitions. [2022-11-20 12:20:29,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2022-11-20 12:20:29,345 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:20:29,345 INFO L195 NwaCegarLoop]: trace histogram [159, 6, 6, 6, 6, 6, 6, 6, 6, 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, 1, 1, 1, 1] [2022-11-20 12:20:29,387 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a7ba8e-776b-4861-9aee-0e05fbd33833/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2022-11-20 12:20:29,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a7ba8e-776b-4861-9aee-0e05fbd33833/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:20:29,571 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 72 more)] === [2022-11-20 12:20:29,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:20:29,571 INFO L85 PathProgramCache]: Analyzing trace with hash -2035375459, now seen corresponding path program 1 times [2022-11-20 12:20:29,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:20:29,573 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1006693891] [2022-11-20 12:20:29,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:20:29,573 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:20:29,573 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a7ba8e-776b-4861-9aee-0e05fbd33833/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:20:29,577 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a7ba8e-776b-4861-9aee-0e05fbd33833/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:20:29,622 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a7ba8e-776b-4861-9aee-0e05fbd33833/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2022-11-20 12:20:33,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:20:33,801 INFO L263 TraceCheckSpWp]: Trace formula consists of 2131 conjuncts, 29 conjunts are in the unsatisfiable core [2022-11-20 12:20:33,807 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:20:33,815 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-20 12:20:34,008 WARN L859 $PredicateComparison]: unable to prove that (exists ((|zalloc_or_die_calloc_model_~ptr~0#1.base| (_ BitVec 32))) (and (= (select |c_old(#valid)| |zalloc_or_die_calloc_model_~ptr~0#1.base|) (_ bv0 1)) (exists ((v_ArrVal_9235 (_ BitVec 1))) (= |c_#valid| (store |c_old(#valid)| |zalloc_or_die_calloc_model_~ptr~0#1.base| v_ArrVal_9235))))) is different from true [2022-11-20 12:20:34,220 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-20 12:20:34,221 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2022-11-20 12:20:34,248 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_9236 (_ BitVec 1))) (= |c_#valid| (store |c_old(#valid)| |c_zalloc_or_die_calloc_model_~ptr~0#1.base| v_ArrVal_9236))) is different from true [2022-11-20 12:20:34,295 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_9236 (_ BitVec 1))) (= |c_#valid| (store |c_old(#valid)| |c_zalloc_or_die_calloc_model_#res#1.base| v_ArrVal_9236))) is different from true [2022-11-20 12:20:34,301 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_9236 (_ BitVec 1))) (= |c_#valid| (store |c_old(#valid)| |c_zalloc_or_die_~ptr~1#1.base| v_ArrVal_9236))) is different from true [2022-11-20 12:20:34,308 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_9236 (_ BitVec 1))) (= (store |c_old(#valid)| |c_zalloc_or_die_#res#1.base| v_ArrVal_9236) |c_#valid|)) is different from true [2022-11-20 12:20:34,338 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-20 12:20:34,338 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 24 [2022-11-20 12:20:34,429 WARN L859 $PredicateComparison]: unable to prove that (exists ((|zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| (_ BitVec 32))) (= (store |c_old(#valid)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| (_ bv1 1)) |c_#valid|)) is different from true [2022-11-20 12:20:34,906 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-20 12:20:34,906 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 28 [2022-11-20 12:20:35,052 INFO L134 CoverageAnalysis]: Checked inductivity of 13650 backedges. 2711 proven. 0 refuted. 0 times theorem prover too weak. 7414 trivial. 3525 not checked. [2022-11-20 12:20:35,052 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:20:40,645 INFO L134 CoverageAnalysis]: Checked inductivity of 13650 backedges. 2713 proven. 3525 refuted. 0 times theorem prover too weak. 7412 trivial. 0 not checked. [2022-11-20 12:20:40,646 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:20:40,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1006693891] [2022-11-20 12:20:40,646 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1006693891] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:20:40,646 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:20:40,646 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 26 [2022-11-20 12:20:40,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292415406] [2022-11-20 12:20:40,647 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:20:40,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-11-20 12:20:40,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:20:40,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-11-20 12:20:40,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=361, Unknown=7, NotChecked=258, Total=702 [2022-11-20 12:20:40,650 INFO L87 Difference]: Start difference. First operand 323 states and 343 transitions. Second operand has 27 states, 25 states have (on average 3.76) internal successors, (94), 21 states have internal predecessors, (94), 3 states have call successors, (9), 4 states have call predecessors, (9), 8 states have return successors, (9), 6 states have call predecessors, (9), 3 states have call successors, (9) [2022-11-20 12:20:59,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:20:59,166 INFO L93 Difference]: Finished difference Result 528 states and 560 transitions. [2022-11-20 12:20:59,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-20 12:20:59,167 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 25 states have (on average 3.76) internal successors, (94), 21 states have internal predecessors, (94), 3 states have call successors, (9), 4 states have call predecessors, (9), 8 states have return successors, (9), 6 states have call predecessors, (9), 3 states have call successors, (9) Word has length 240 [2022-11-20 12:20:59,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:20:59,170 INFO L225 Difference]: With dead ends: 528 [2022-11-20 12:20:59,170 INFO L226 Difference]: Without dead ends: 528 [2022-11-20 12:20:59,171 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 490 GetRequests, 451 SyntacticMatches, 6 SemanticMatches, 33 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 19.8s TimeCoverageRelationStatistics Valid=154, Invalid=675, Unknown=7, NotChecked=354, Total=1190 [2022-11-20 12:20:59,171 INFO L413 NwaCegarLoop]: 152 mSDtfsCounter, 280 mSDsluCounter, 1411 mSDsCounter, 0 mSdLazyCounter, 771 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 280 SdHoareTripleChecker+Valid, 1563 SdHoareTripleChecker+Invalid, 2446 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 771 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1668 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-11-20 12:20:59,172 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [280 Valid, 1563 Invalid, 2446 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 771 Invalid, 0 Unknown, 1668 Unchecked, 1.8s Time] [2022-11-20 12:20:59,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 528 states. [2022-11-20 12:20:59,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 528 to 494. [2022-11-20 12:20:59,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 494 states, 411 states have (on average 1.2165450121654502) internal successors, (500), 476 states have internal predecessors, (500), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2022-11-20 12:20:59,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 494 states to 494 states and 526 transitions. [2022-11-20 12:20:59,187 INFO L78 Accepts]: Start accepts. Automaton has 494 states and 526 transitions. Word has length 240 [2022-11-20 12:20:59,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:20:59,188 INFO L495 AbstractCegarLoop]: Abstraction has 494 states and 526 transitions. [2022-11-20 12:20:59,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 25 states have (on average 3.76) internal successors, (94), 21 states have internal predecessors, (94), 3 states have call successors, (9), 4 states have call predecessors, (9), 8 states have return successors, (9), 6 states have call predecessors, (9), 3 states have call successors, (9) [2022-11-20 12:20:59,189 INFO L276 IsEmpty]: Start isEmpty. Operand 494 states and 526 transitions. [2022-11-20 12:20:59,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2022-11-20 12:20:59,190 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:20:59,191 INFO L195 NwaCegarLoop]: trace histogram [159, 6, 6, 6, 6, 6, 6, 6, 6, 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, 1, 1, 1, 1] [2022-11-20 12:20:59,233 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a7ba8e-776b-4861-9aee-0e05fbd33833/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2022-11-20 12:20:59,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a7ba8e-776b-4861-9aee-0e05fbd33833/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:20:59,415 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 72 more)] === [2022-11-20 12:20:59,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:20:59,415 INFO L85 PathProgramCache]: Analyzing trace with hash -2035375458, now seen corresponding path program 1 times [2022-11-20 12:20:59,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:20:59,417 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [801850730] [2022-11-20 12:20:59,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:20:59,417 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:20:59,417 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a7ba8e-776b-4861-9aee-0e05fbd33833/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:20:59,419 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a7ba8e-776b-4861-9aee-0e05fbd33833/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:20:59,462 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a7ba8e-776b-4861-9aee-0e05fbd33833/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2022-11-20 12:21:03,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:21:03,525 INFO L263 TraceCheckSpWp]: Trace formula consists of 2131 conjuncts, 59 conjunts are in the unsatisfiable core [2022-11-20 12:21:03,534 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:21:03,541 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-20 12:21:03,549 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-20 12:21:03,987 WARN L859 $PredicateComparison]: unable to prove that (exists ((|zalloc_or_die_calloc_model_~ptr~0#1.base| (_ BitVec 32))) (and (exists ((v_ArrVal_10232 (_ BitVec 32))) (= (store |c_old(#length)| |zalloc_or_die_calloc_model_~ptr~0#1.base| v_ArrVal_10232) |c_#length|)) (= (select |c_old(#valid)| |zalloc_or_die_calloc_model_~ptr~0#1.base|) (_ bv0 1)))) is different from true [2022-11-20 12:21:04,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:21:04,130 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-20 12:21:04,151 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-20 12:21:04,151 INFO L350 Elim1Store]: Elim1 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 13 treesize of output 13 [2022-11-20 12:21:04,722 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-20 12:21:04,723 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 18 [2022-11-20 12:21:04,920 WARN L859 $PredicateComparison]: unable to prove that (exists ((|zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| (_ BitVec 32))) (= |c_#length| (store |c_old(#length)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| |c_zalloc_or_die_#in~size#1|))) is different from true [2022-11-20 12:21:05,506 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-20 12:21:05,506 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 22 [2022-11-20 12:21:05,991 INFO L134 CoverageAnalysis]: Checked inductivity of 13650 backedges. 2711 proven. 90 refuted. 0 times theorem prover too weak. 7412 trivial. 3437 not checked. [2022-11-20 12:21:05,991 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:21:07,242 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:21:07,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [801850730] [2022-11-20 12:21:07,242 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [801850730] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:21:07,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [362051286] [2022-11-20 12:21:07,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:21:07,243 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-20 12:21:07,243 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a7ba8e-776b-4861-9aee-0e05fbd33833/bin/uautomizer-ug76WZFUDN/cvc4 [2022-11-20 12:21:07,244 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a7ba8e-776b-4861-9aee-0e05fbd33833/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-20 12:21:07,246 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a7ba8e-776b-4861-9aee-0e05fbd33833/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt (23)] Waiting until timeout for monitored process [2022-11-20 12:21:52,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:21:54,208 INFO L263 TraceCheckSpWp]: Trace formula consists of 2131 conjuncts, 58 conjunts are in the unsatisfiable core [2022-11-20 12:21:54,215 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:21:54,228 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-20 12:21:54,236 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-20 12:21:54,533 WARN L859 $PredicateComparison]: unable to prove that (exists ((|zalloc_or_die_calloc_model_~ptr~0#1.base| (_ BitVec 32))) (and (= (select |c_old(#valid)| |zalloc_or_die_calloc_model_~ptr~0#1.base|) (_ bv0 1)) (exists ((v_ArrVal_11222 (_ BitVec 1))) (= (store |c_old(#valid)| |zalloc_or_die_calloc_model_~ptr~0#1.base| v_ArrVal_11222) |c_#valid|)) (exists ((v_ArrVal_11223 (_ BitVec 32))) (= |c_#length| (store |c_old(#length)| |zalloc_or_die_calloc_model_~ptr~0#1.base| v_ArrVal_11223))))) is different from true [2022-11-20 12:21:54,779 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-20 12:21:54,779 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2022-11-20 12:21:54,791 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-20 12:21:54,849 WARN L859 $PredicateComparison]: unable to prove that (exists ((|zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| (_ BitVec 32)) (v_ArrVal_11224 (_ BitVec 32))) (and (= (store |c_old(#length)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| v_ArrVal_11224) |c_#length|) (= (_ bv0 1) (select |c_old(#valid)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base|)))) is different from true [2022-11-20 12:21:54,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:21:54,992 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-20 12:21:55,005 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-20 12:21:55,006 INFO L350 Elim1Store]: Elim1 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 13 treesize of output 13 [2022-11-20 12:21:55,630 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-20 12:21:55,630 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 18 [2022-11-20 12:21:55,927 INFO L134 CoverageAnalysis]: Checked inductivity of 13650 backedges. 2711 proven. 2 refuted. 0 times theorem prover too weak. 7412 trivial. 3525 not checked. [2022-11-20 12:21:55,928 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:21:56,807 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [362051286] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:21:56,807 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:21:56,807 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 15] total 24 [2022-11-20 12:21:56,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449855322] [2022-11-20 12:21:56,808 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:21:56,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-20 12:21:56,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:21:56,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-20 12:21:56,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=525, Unknown=8, NotChecked=196, Total=812 [2022-11-20 12:21:56,810 INFO L87 Difference]: Start difference. First operand 494 states and 526 transitions. Second operand has 25 states, 23 states have (on average 4.173913043478261) internal successors, (96), 20 states have internal predecessors, (96), 4 states have call successors, (8), 3 states have call predecessors, (8), 7 states have return successors, (9), 7 states have call predecessors, (9), 4 states have call successors, (9) [2022-11-20 12:22:00,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:22:00,618 INFO L93 Difference]: Finished difference Result 523 states and 560 transitions. [2022-11-20 12:22:00,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-20 12:22:00,619 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 23 states have (on average 4.173913043478261) internal successors, (96), 20 states have internal predecessors, (96), 4 states have call successors, (8), 3 states have call predecessors, (8), 7 states have return successors, (9), 7 states have call predecessors, (9), 4 states have call successors, (9) Word has length 240 [2022-11-20 12:22:00,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:22:00,621 INFO L225 Difference]: With dead ends: 523 [2022-11-20 12:22:00,622 INFO L226 Difference]: Without dead ends: 523 [2022-11-20 12:22:00,622 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 506 GetRequests, 471 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=133, Invalid=931, Unknown=8, NotChecked=260, Total=1332 [2022-11-20 12:22:00,623 INFO L413 NwaCegarLoop]: 172 mSDtfsCounter, 3 mSDsluCounter, 1883 mSDsCounter, 0 mSdLazyCounter, 868 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 2055 SdHoareTripleChecker+Invalid, 2023 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 868 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1146 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-11-20 12:22:00,623 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 2055 Invalid, 2023 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 868 Invalid, 0 Unknown, 1146 Unchecked, 2.4s Time] [2022-11-20 12:22:00,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 523 states. [2022-11-20 12:22:00,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 523 to 523. [2022-11-20 12:22:00,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 523 states, 438 states have (on average 1.2146118721461188) internal successors, (532), 504 states have internal predecessors, (532), 14 states have call successors, (14), 5 states have call predecessors, (14), 5 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2022-11-20 12:22:00,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 523 states to 523 states and 560 transitions. [2022-11-20 12:22:00,639 INFO L78 Accepts]: Start accepts. Automaton has 523 states and 560 transitions. Word has length 240 [2022-11-20 12:22:00,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:22:00,640 INFO L495 AbstractCegarLoop]: Abstraction has 523 states and 560 transitions. [2022-11-20 12:22:00,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 23 states have (on average 4.173913043478261) internal successors, (96), 20 states have internal predecessors, (96), 4 states have call successors, (8), 3 states have call predecessors, (8), 7 states have return successors, (9), 7 states have call predecessors, (9), 4 states have call successors, (9) [2022-11-20 12:22:00,640 INFO L276 IsEmpty]: Start isEmpty. Operand 523 states and 560 transitions. [2022-11-20 12:22:00,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2022-11-20 12:22:00,642 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:22:00,642 INFO L195 NwaCegarLoop]: trace histogram [159, 6, 6, 6, 6, 6, 6, 6, 6, 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, 1, 1, 1, 1, 1] [2022-11-20 12:22:00,849 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a7ba8e-776b-4861-9aee-0e05fbd33833/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt (23)] Forceful destruction successful, exit code 0 [2022-11-20 12:22:00,885 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a7ba8e-776b-4861-9aee-0e05fbd33833/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2022-11-20 12:22:01,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a7ba8e-776b-4861-9aee-0e05fbd33833/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a7ba8e-776b-4861-9aee-0e05fbd33833/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:22:01,056 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 72 more)] === [2022-11-20 12:22:01,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:22:01,057 INFO L85 PathProgramCache]: Analyzing trace with hash 1327870244, now seen corresponding path program 1 times [2022-11-20 12:22:01,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:22:01,058 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1566346482] [2022-11-20 12:22:01,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:22:01,058 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:22:01,058 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a7ba8e-776b-4861-9aee-0e05fbd33833/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:22:01,059 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a7ba8e-776b-4861-9aee-0e05fbd33833/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:22:01,061 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a7ba8e-776b-4861-9aee-0e05fbd33833/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2022-11-20 12:22:05,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:22:05,927 INFO L263 TraceCheckSpWp]: Trace formula consists of 2137 conjuncts, 42 conjunts are in the unsatisfiable core [2022-11-20 12:22:05,932 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:22:05,942 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-20 12:22:05,954 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-20 12:22:06,379 WARN L859 $PredicateComparison]: unable to prove that (exists ((|zalloc_or_die_calloc_model_~ptr~0#1.base| (_ BitVec 32))) (and (= (select |c_old(#valid)| |zalloc_or_die_calloc_model_~ptr~0#1.base|) (_ bv0 1)) (exists ((v_ArrVal_12213 (_ BitVec 32))) (= |c_#length| (store |c_old(#length)| |zalloc_or_die_calloc_model_~ptr~0#1.base| v_ArrVal_12213))))) is different from true [2022-11-20 12:22:06,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:22:06,524 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-20 12:22:06,538 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-20 12:22:06,539 INFO L350 Elim1Store]: Elim1 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 13 treesize of output 13 [2022-11-20 12:22:06,630 WARN L859 $PredicateComparison]: unable to prove that (exists ((|zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| (_ BitVec 32))) (= |c_#length| (store |c_old(#length)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| |c_zalloc_or_die_#in~size#1|))) is different from true [2022-11-20 12:22:07,293 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-20 12:22:07,294 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 18 [2022-11-20 12:22:07,524 INFO L134 CoverageAnalysis]: Checked inductivity of 13650 backedges. 3797 proven. 1 refuted. 0 times theorem prover too weak. 7590 trivial. 2262 not checked. [2022-11-20 12:22:07,524 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:22:08,381 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:22:08,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1566346482] [2022-11-20 12:22:08,381 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1566346482] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:22:08,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [313692963] [2022-11-20 12:22:08,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:22:08,382 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-20 12:22:08,382 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a7ba8e-776b-4861-9aee-0e05fbd33833/bin/uautomizer-ug76WZFUDN/cvc4 [2022-11-20 12:22:08,383 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a7ba8e-776b-4861-9aee-0e05fbd33833/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-20 12:22:08,384 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a7ba8e-776b-4861-9aee-0e05fbd33833/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt (25)] Waiting until timeout for monitored process [2022-11-20 12:22:51,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:22:53,281 INFO L263 TraceCheckSpWp]: Trace formula consists of 2137 conjuncts, 52 conjunts are in the unsatisfiable core [2022-11-20 12:22:53,290 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:22:53,305 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-20 12:22:53,315 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-20 12:22:54,021 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-20 12:22:54,022 INFO L350 Elim1Store]: Elim1 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 13 treesize of output 13 [2022-11-20 12:22:54,031 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-20 12:22:54,130 WARN L859 $PredicateComparison]: unable to prove that (exists ((|zalloc_or_die_calloc_model_~ptr~0#1.base| (_ BitVec 32))) (= (store |c_old(#length)| |zalloc_or_die_calloc_model_~ptr~0#1.base| |c_zalloc_or_die_#in~size#1|) |c_#length|)) is different from true [2022-11-20 12:22:54,820 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-20 12:22:54,820 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 18 [2022-11-20 12:22:55,051 INFO L134 CoverageAnalysis]: Checked inductivity of 13650 backedges. 3797 proven. 89 refuted. 0 times theorem prover too weak. 7590 trivial. 2174 not checked. [2022-11-20 12:22:55,051 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:22:55,782 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [313692963] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:22:55,782 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:22:55,782 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 17] total 19 [2022-11-20 12:22:55,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786366225] [2022-11-20 12:22:55,782 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:22:55,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-20 12:22:55,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:22:55,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-20 12:22:55,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=298, Unknown=3, NotChecked=108, Total=462 [2022-11-20 12:22:55,784 INFO L87 Difference]: Start difference. First operand 523 states and 560 transitions. Second operand has 20 states, 19 states have (on average 4.052631578947368) internal successors, (77), 16 states have internal predecessors, (77), 3 states have call successors, (6), 3 states have call predecessors, (6), 6 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-20 12:22:58,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:22:58,563 INFO L93 Difference]: Finished difference Result 532 states and 572 transitions. [2022-11-20 12:22:58,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-20 12:22:58,564 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 4.052631578947368) internal successors, (77), 16 states have internal predecessors, (77), 3 states have call successors, (6), 3 states have call predecessors, (6), 6 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) Word has length 241 [2022-11-20 12:22:58,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:22:58,568 INFO L225 Difference]: With dead ends: 532 [2022-11-20 12:22:58,568 INFO L226 Difference]: Without dead ends: 532 [2022-11-20 12:22:58,569 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 506 GetRequests, 480 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=69, Invalid=446, Unknown=3, NotChecked=132, Total=650 [2022-11-20 12:22:58,570 INFO L413 NwaCegarLoop]: 167 mSDtfsCounter, 3 mSDsluCounter, 1509 mSDsCounter, 0 mSdLazyCounter, 777 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 1676 SdHoareTripleChecker+Invalid, 1626 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 777 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 840 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-20 12:22:58,571 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 1676 Invalid, 1626 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 777 Invalid, 0 Unknown, 840 Unchecked, 2.1s Time] [2022-11-20 12:22:58,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 532 states. [2022-11-20 12:22:58,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 532 to 530. [2022-11-20 12:22:58,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 530 states, 445 states have (on average 1.2202247191011235) internal successors, (543), 511 states have internal predecessors, (543), 14 states have call successors, (14), 5 states have call predecessors, (14), 5 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2022-11-20 12:22:58,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 530 states to 530 states and 571 transitions. [2022-11-20 12:22:58,599 INFO L78 Accepts]: Start accepts. Automaton has 530 states and 571 transitions. Word has length 241 [2022-11-20 12:22:58,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:22:58,600 INFO L495 AbstractCegarLoop]: Abstraction has 530 states and 571 transitions. [2022-11-20 12:22:58,600 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 4.052631578947368) internal successors, (77), 16 states have internal predecessors, (77), 3 states have call successors, (6), 3 states have call predecessors, (6), 6 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-20 12:22:58,600 INFO L276 IsEmpty]: Start isEmpty. Operand 530 states and 571 transitions. [2022-11-20 12:22:58,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2022-11-20 12:22:58,602 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:22:58,603 INFO L195 NwaCegarLoop]: trace histogram [159, 6, 6, 6, 6, 6, 6, 6, 6, 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, 1, 1, 1, 1, 1] [2022-11-20 12:22:58,655 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a7ba8e-776b-4861-9aee-0e05fbd33833/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2022-11-20 12:22:59,020 WARN L435 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a7ba8e-776b-4861-9aee-0e05fbd33833/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt (25)] Forcibly destroying the process [2022-11-20 12:22:59,030 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a7ba8e-776b-4861-9aee-0e05fbd33833/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt (25)] Forceful destruction successful, exit code 0 [2022-11-20 12:22:59,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a7ba8e-776b-4861-9aee-0e05fbd33833/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a7ba8e-776b-4861-9aee-0e05fbd33833/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt [2022-11-20 12:22:59,030 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 72 more)] === [2022-11-20 12:22:59,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:22:59,031 INFO L85 PathProgramCache]: Analyzing trace with hash 1327870243, now seen corresponding path program 1 times [2022-11-20 12:22:59,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:22:59,032 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [359976318] [2022-11-20 12:22:59,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:22:59,032 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:22:59,033 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a7ba8e-776b-4861-9aee-0e05fbd33833/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:22:59,034 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a7ba8e-776b-4861-9aee-0e05fbd33833/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:22:59,054 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a7ba8e-776b-4861-9aee-0e05fbd33833/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2022-11-20 12:23:02,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:23:02,639 INFO L263 TraceCheckSpWp]: Trace formula consists of 2137 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 12:23:02,642 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:23:02,718 INFO L134 CoverageAnalysis]: Checked inductivity of 13650 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13650 trivial. 0 not checked. [2022-11-20 12:23:02,718 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:23:02,719 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:23:02,719 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [359976318] [2022-11-20 12:23:02,719 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [359976318] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:23:02,719 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:23:02,719 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:23:02,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113405575] [2022-11-20 12:23:02,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:23:02,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:23:02,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:23:02,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:23:02,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:23:02,721 INFO L87 Difference]: Start difference. First operand 530 states and 571 transitions. Second operand has 4 states, 3 states have (on average 10.333333333333334) internal successors, (31), 4 states have internal predecessors, (31), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-20 12:23:03,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:23:03,173 INFO L93 Difference]: Finished difference Result 568 states and 613 transitions. [2022-11-20 12:23:03,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 12:23:03,174 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 10.333333333333334) internal successors, (31), 4 states have internal predecessors, (31), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 241 [2022-11-20 12:23:03,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:23:03,177 INFO L225 Difference]: With dead ends: 568 [2022-11-20 12:23:03,177 INFO L226 Difference]: Without dead ends: 568 [2022-11-20 12:23:03,177 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 239 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:23:03,178 INFO L413 NwaCegarLoop]: 164 mSDtfsCounter, 268 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 270 SdHoareTripleChecker+Valid, 282 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-20 12:23:03,179 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [270 Valid, 282 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-20 12:23:03,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 568 states. [2022-11-20 12:23:03,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 568 to 529. [2022-11-20 12:23:03,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 529 states, 445 states have (on average 1.2157303370786516) internal successors, (541), 510 states have internal predecessors, (541), 14 states have call successors, (14), 5 states have call predecessors, (14), 5 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2022-11-20 12:23:03,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 529 states to 529 states and 569 transitions. [2022-11-20 12:23:03,195 INFO L78 Accepts]: Start accepts. Automaton has 529 states and 569 transitions. Word has length 241 [2022-11-20 12:23:03,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:23:03,196 INFO L495 AbstractCegarLoop]: Abstraction has 529 states and 569 transitions. [2022-11-20 12:23:03,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 10.333333333333334) internal successors, (31), 4 states have internal predecessors, (31), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-20 12:23:03,197 INFO L276 IsEmpty]: Start isEmpty. Operand 529 states and 569 transitions. [2022-11-20 12:23:03,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2022-11-20 12:23:03,199 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:23:03,199 INFO L195 NwaCegarLoop]: trace histogram [159, 6, 6, 6, 6, 6, 6, 6, 6, 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, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:23:03,250 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a7ba8e-776b-4861-9aee-0e05fbd33833/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2022-11-20 12:23:03,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a7ba8e-776b-4861-9aee-0e05fbd33833/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:23:03,415 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 72 more)] === [2022-11-20 12:23:03,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:23:03,415 INFO L85 PathProgramCache]: Analyzing trace with hash 478017733, now seen corresponding path program 1 times [2022-11-20 12:23:03,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:23:03,417 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1244706962] [2022-11-20 12:23:03,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:23:03,417 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:23:03,417 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a7ba8e-776b-4861-9aee-0e05fbd33833/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:23:03,418 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a7ba8e-776b-4861-9aee-0e05fbd33833/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:23:03,421 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a7ba8e-776b-4861-9aee-0e05fbd33833/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2022-11-20 12:23:07,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:23:07,283 INFO L263 TraceCheckSpWp]: Trace formula consists of 2151 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-20 12:23:07,287 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:23:07,569 INFO L134 CoverageAnalysis]: Checked inductivity of 13650 backedges. 176 proven. 1263 refuted. 0 times theorem prover too weak. 12211 trivial. 0 not checked. [2022-11-20 12:23:07,569 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:23:07,684 INFO L350 Elim1Store]: Elim1 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 8 treesize of output 6 [2022-11-20 12:23:08,435 INFO L134 CoverageAnalysis]: Checked inductivity of 13650 backedges. 176 proven. 1263 refuted. 0 times theorem prover too weak. 12211 trivial. 0 not checked. [2022-11-20 12:23:08,436 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:23:08,436 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1244706962] [2022-11-20 12:23:08,436 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1244706962] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:23:08,436 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:23:08,436 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2022-11-20 12:23:08,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483476955] [2022-11-20 12:23:08,436 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:23:08,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-20 12:23:08,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:23:08,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-20 12:23:08,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=262, Unknown=0, NotChecked=0, Total=306 [2022-11-20 12:23:08,438 INFO L87 Difference]: Start difference. First operand 529 states and 569 transitions. Second operand has 18 states, 17 states have (on average 4.0) internal successors, (68), 16 states have internal predecessors, (68), 3 states have call successors, (9), 1 states have call predecessors, (9), 3 states have return successors, (10), 5 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-20 12:23:11,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:23:11,550 INFO L93 Difference]: Finished difference Result 542 states and 587 transitions. [2022-11-20 12:23:11,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-20 12:23:11,552 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 4.0) internal successors, (68), 16 states have internal predecessors, (68), 3 states have call successors, (9), 1 states have call predecessors, (9), 3 states have return successors, (10), 5 states have call predecessors, (10), 3 states have call successors, (10) Word has length 243 [2022-11-20 12:23:11,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:23:11,555 INFO L225 Difference]: With dead ends: 542 [2022-11-20 12:23:11,556 INFO L226 Difference]: Without dead ends: 542 [2022-11-20 12:23:11,556 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 492 GetRequests, 470 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=92, Invalid=460, Unknown=0, NotChecked=0, Total=552 [2022-11-20 12:23:11,557 INFO L413 NwaCegarLoop]: 151 mSDtfsCounter, 490 mSDsluCounter, 988 mSDsCounter, 0 mSdLazyCounter, 409 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 491 SdHoareTripleChecker+Valid, 1139 SdHoareTripleChecker+Invalid, 424 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 409 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-11-20 12:23:11,557 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [491 Valid, 1139 Invalid, 424 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 409 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-11-20 12:23:11,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 542 states. [2022-11-20 12:23:11,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 542 to 528. [2022-11-20 12:23:11,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 528 states, 445 states have (on average 1.2134831460674158) internal successors, (540), 509 states have internal predecessors, (540), 14 states have call successors, (14), 5 states have call predecessors, (14), 5 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2022-11-20 12:23:11,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 528 states to 528 states and 568 transitions. [2022-11-20 12:23:11,572 INFO L78 Accepts]: Start accepts. Automaton has 528 states and 568 transitions. Word has length 243 [2022-11-20 12:23:11,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:23:11,573 INFO L495 AbstractCegarLoop]: Abstraction has 528 states and 568 transitions. [2022-11-20 12:23:11,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 4.0) internal successors, (68), 16 states have internal predecessors, (68), 3 states have call successors, (9), 1 states have call predecessors, (9), 3 states have return successors, (10), 5 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-20 12:23:11,574 INFO L276 IsEmpty]: Start isEmpty. Operand 528 states and 568 transitions. [2022-11-20 12:23:11,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2022-11-20 12:23:11,575 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:23:11,576 INFO L195 NwaCegarLoop]: trace histogram [159, 6, 6, 6, 6, 6, 6, 6, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:23:11,619 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a7ba8e-776b-4861-9aee-0e05fbd33833/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2022-11-20 12:23:11,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a7ba8e-776b-4861-9aee-0e05fbd33833/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:23:11,805 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 72 more)] === [2022-11-20 12:23:11,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:23:11,805 INFO L85 PathProgramCache]: Analyzing trace with hash -1485259670, now seen corresponding path program 1 times [2022-11-20 12:23:11,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:23:11,806 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [357893776] [2022-11-20 12:23:11,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:23:11,806 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:23:11,807 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a7ba8e-776b-4861-9aee-0e05fbd33833/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:23:11,807 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a7ba8e-776b-4861-9aee-0e05fbd33833/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:23:11,810 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a7ba8e-776b-4861-9aee-0e05fbd33833/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2022-11-20 12:23:15,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:23:15,986 INFO L263 TraceCheckSpWp]: Trace formula consists of 2166 conjuncts, 40 conjunts are in the unsatisfiable core [2022-11-20 12:23:15,992 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:23:15,996 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-20 12:23:16,171 WARN L859 $PredicateComparison]: unable to prove that (exists ((|zalloc_or_die_calloc_model_~ptr~0#1.base| (_ BitVec 32))) (and (exists ((v_ArrVal_16176 (_ BitVec 1))) (= (store |c_old(#valid)| |zalloc_or_die_calloc_model_~ptr~0#1.base| v_ArrVal_16176) |c_#valid|)) (= (select |c_old(#valid)| |zalloc_or_die_calloc_model_~ptr~0#1.base|) (_ bv0 1)))) is different from true [2022-11-20 12:23:16,319 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-20 12:23:16,319 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2022-11-20 12:23:16,350 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_16177 (_ BitVec 1))) (= (store |c_old(#valid)| |c_zalloc_or_die_calloc_model_~ptr~0#1.base| v_ArrVal_16177) |c_#valid|)) is different from true [2022-11-20 12:23:16,392 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_16177 (_ BitVec 1))) (= (store |c_old(#valid)| |c_zalloc_or_die_calloc_model_#res#1.base| v_ArrVal_16177) |c_#valid|)) is different from true [2022-11-20 12:23:16,399 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_16177 (_ BitVec 1))) (= (store |c_old(#valid)| |c_zalloc_or_die_~ptr~1#1.base| v_ArrVal_16177) |c_#valid|)) is different from true [2022-11-20 12:23:16,406 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_16177 (_ BitVec 1))) (= (store |c_old(#valid)| |c_zalloc_or_die_#res#1.base| v_ArrVal_16177) |c_#valid|)) is different from true [2022-11-20 12:23:16,435 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-20 12:23:16,436 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 24 [2022-11-20 12:23:16,568 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_16178 (_ BitVec 1))) (= (store |c_old(#valid)| |c_zalloc_or_die_calloc_model_~ptr~0#1.base| v_ArrVal_16178) |c_#valid|)) is different from true [2022-11-20 12:23:16,606 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_16178 (_ BitVec 1))) (= |c_#valid| (store |c_old(#valid)| |c_zalloc_or_die_calloc_model_#res#1.base| v_ArrVal_16178))) is different from true [2022-11-20 12:23:16,612 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_16178 (_ BitVec 1))) (= (store |c_old(#valid)| |c_zalloc_or_die_~ptr~1#1.base| v_ArrVal_16178) |c_#valid|)) is different from true [2022-11-20 12:23:16,618 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_16178 (_ BitVec 1))) (= (store |c_old(#valid)| |c_zalloc_or_die_#res#1.base| v_ArrVal_16178) |c_#valid|)) is different from true [2022-11-20 12:23:16,673 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-20 12:23:16,673 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 28 [2022-11-20 12:23:16,811 WARN L859 $PredicateComparison]: unable to prove that (exists ((|zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| (_ BitVec 32))) (= (store |c_old(#valid)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| (_ bv1 1)) |c_#valid|)) is different from true [2022-11-20 12:23:17,262 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-20 12:23:17,262 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 31 [2022-11-20 12:23:17,605 INFO L134 CoverageAnalysis]: Checked inductivity of 13650 backedges. 1447 proven. 0 refuted. 0 times theorem prover too weak. 7327 trivial. 4876 not checked. [2022-11-20 12:23:17,605 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:23:17,951 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:23:17,951 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [357893776] [2022-11-20 12:23:17,951 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [357893776] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:23:17,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [445354019] [2022-11-20 12:23:17,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:23:17,952 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-20 12:23:17,952 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a7ba8e-776b-4861-9aee-0e05fbd33833/bin/uautomizer-ug76WZFUDN/cvc4 [2022-11-20 12:23:17,953 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a7ba8e-776b-4861-9aee-0e05fbd33833/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-20 12:23:17,955 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a7ba8e-776b-4861-9aee-0e05fbd33833/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt (29)] Waiting until timeout for monitored process [2022-11-20 12:23:54,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:23:54,692 INFO L263 TraceCheckSpWp]: Trace formula consists of 2166 conjuncts, 49 conjunts are in the unsatisfiable core [2022-11-20 12:23:54,703 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:23:54,710 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-20 12:23:55,063 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-20 12:23:55,064 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2022-11-20 12:23:55,756 INFO L321 Elim1Store]: treesize reduction 44, result has 34.3 percent of original size [2022-11-20 12:23:55,757 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 26 treesize of output 43 [2022-11-20 12:23:55,915 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_17180 (_ BitVec 1))) (= (store |c_old(#valid)| |c_zalloc_or_die_calloc_model_~ptr~0#1.base| v_ArrVal_17180) |c_#valid|)) is different from true [2022-11-20 12:23:55,956 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_17180 (_ BitVec 1))) (= |c_#valid| (store |c_old(#valid)| |c_zalloc_or_die_calloc_model_#res#1.base| v_ArrVal_17180))) is different from true [2022-11-20 12:23:55,963 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_17180 (_ BitVec 1))) (= |c_#valid| (store |c_old(#valid)| |c_zalloc_or_die_~ptr~1#1.base| v_ArrVal_17180))) is different from true [2022-11-20 12:23:55,969 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_17180 (_ BitVec 1))) (= |c_#valid| (store |c_old(#valid)| |c_zalloc_or_die_#res#1.base| v_ArrVal_17180))) is different from true [2022-11-20 12:23:56,029 INFO L321 Elim1Store]: treesize reduction 24, result has 48.9 percent of original size [2022-11-20 12:23:56,029 INFO L350 Elim1Store]: Elim1 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 2 case distinctions, treesize of input 21 treesize of output 40 [2022-11-20 12:23:56,784 INFO L321 Elim1Store]: treesize reduction 24, result has 57.9 percent of original size [2022-11-20 12:23:56,785 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 64 [2022-11-20 12:23:57,401 INFO L134 CoverageAnalysis]: Checked inductivity of 13650 backedges. 1535 proven. 176 refuted. 0 times theorem prover too weak. 7327 trivial. 4612 not checked. [2022-11-20 12:23:57,402 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:23:57,701 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [445354019] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:23:57,702 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:23:57,702 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 28] total 44 [2022-11-20 12:23:57,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160050064] [2022-11-20 12:23:57,703 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:23:57,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-11-20 12:23:57,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:23:57,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-11-20 12:23:57,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=211, Invalid=1091, Unknown=14, NotChecked=1134, Total=2450 [2022-11-20 12:23:57,707 INFO L87 Difference]: Start difference. First operand 528 states and 568 transitions. Second operand has 45 states, 42 states have (on average 3.0476190476190474) internal successors, (128), 37 states have internal predecessors, (128), 6 states have call successors, (9), 2 states have call predecessors, (9), 9 states have return successors, (10), 10 states have call predecessors, (10), 6 states have call successors, (10) [2022-11-20 12:23:59,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:23:59,839 INFO L93 Difference]: Finished difference Result 629 states and 697 transitions. [2022-11-20 12:23:59,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-20 12:23:59,841 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 42 states have (on average 3.0476190476190474) internal successors, (128), 37 states have internal predecessors, (128), 6 states have call successors, (9), 2 states have call predecessors, (9), 9 states have return successors, (10), 10 states have call predecessors, (10), 6 states have call successors, (10) Word has length 246 [2022-11-20 12:23:59,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:23:59,844 INFO L225 Difference]: With dead ends: 629 [2022-11-20 12:23:59,844 INFO L226 Difference]: Without dead ends: 629 [2022-11-20 12:23:59,845 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 531 GetRequests, 474 SyntacticMatches, 5 SemanticMatches, 52 ConstructedPredicates, 14 IntricatePredicates, 0 DeprecatedPredicates, 511 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=260, Invalid=1342, Unknown=14, NotChecked=1246, Total=2862 [2022-11-20 12:23:59,845 INFO L413 NwaCegarLoop]: 143 mSDtfsCounter, 441 mSDsluCounter, 1694 mSDsCounter, 0 mSdLazyCounter, 752 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 441 SdHoareTripleChecker+Valid, 1837 SdHoareTripleChecker+Invalid, 4436 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 752 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 3669 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-20 12:23:59,846 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [441 Valid, 1837 Invalid, 4436 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 752 Invalid, 0 Unknown, 3669 Unchecked, 1.6s Time] [2022-11-20 12:23:59,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 629 states. [2022-11-20 12:23:59,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 629 to 598. [2022-11-20 12:23:59,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 598 states, 503 states have (on average 1.220675944333996) internal successors, (614), 568 states have internal predecessors, (614), 26 states have call successors, (26), 5 states have call predecessors, (26), 5 states have return successors, (26), 24 states have call predecessors, (26), 26 states have call successors, (26) [2022-11-20 12:23:59,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 598 states to 598 states and 666 transitions. [2022-11-20 12:23:59,864 INFO L78 Accepts]: Start accepts. Automaton has 598 states and 666 transitions. Word has length 246 [2022-11-20 12:23:59,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:23:59,865 INFO L495 AbstractCegarLoop]: Abstraction has 598 states and 666 transitions. [2022-11-20 12:23:59,865 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 42 states have (on average 3.0476190476190474) internal successors, (128), 37 states have internal predecessors, (128), 6 states have call successors, (9), 2 states have call predecessors, (9), 9 states have return successors, (10), 10 states have call predecessors, (10), 6 states have call successors, (10) [2022-11-20 12:23:59,865 INFO L276 IsEmpty]: Start isEmpty. Operand 598 states and 666 transitions. [2022-11-20 12:23:59,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2022-11-20 12:23:59,867 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:23:59,867 INFO L195 NwaCegarLoop]: trace histogram [159, 6, 6, 6, 6, 6, 6, 6, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:23:59,919 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a7ba8e-776b-4861-9aee-0e05fbd33833/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2022-11-20 12:24:00,150 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a7ba8e-776b-4861-9aee-0e05fbd33833/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt (29)] Forceful destruction successful, exit code 0 [2022-11-20 12:24:00,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a7ba8e-776b-4861-9aee-0e05fbd33833/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a7ba8e-776b-4861-9aee-0e05fbd33833/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt [2022-11-20 12:24:00,290 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 72 more)] === [2022-11-20 12:24:00,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:24:00,291 INFO L85 PathProgramCache]: Analyzing trace with hash -1485259669, now seen corresponding path program 1 times [2022-11-20 12:24:00,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:24:00,292 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [999255087] [2022-11-20 12:24:00,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:24:00,293 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:24:00,293 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a7ba8e-776b-4861-9aee-0e05fbd33833/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:24:00,295 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a7ba8e-776b-4861-9aee-0e05fbd33833/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:24:00,339 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a7ba8e-776b-4861-9aee-0e05fbd33833/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2022-11-20 12:24:05,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:24:05,270 INFO L263 TraceCheckSpWp]: Trace formula consists of 2166 conjuncts, 91 conjunts are in the unsatisfiable core [2022-11-20 12:24:05,301 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:24:05,311 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-20 12:24:05,318 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-20 12:24:05,753 WARN L859 $PredicateComparison]: unable to prove that (exists ((|zalloc_or_die_calloc_model_~ptr~0#1.base| (_ BitVec 32))) (and (= (select |c_old(#valid)| |zalloc_or_die_calloc_model_~ptr~0#1.base|) (_ bv0 1)) (exists ((v_ArrVal_18182 (_ BitVec 32))) (= (store |c_old(#length)| |zalloc_or_die_calloc_model_~ptr~0#1.base| v_ArrVal_18182) |c_#length|)))) is different from true [2022-11-20 12:24:05,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:24:05,900 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-20 12:24:05,913 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-20 12:24:05,913 INFO L350 Elim1Store]: Elim1 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 13 treesize of output 13 [2022-11-20 12:24:06,381 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-20 12:24:06,381 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 18 [2022-11-20 12:24:06,713 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-20 12:24:07,232 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-20 12:24:07,232 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 22 [2022-11-20 12:24:07,599 WARN L859 $PredicateComparison]: unable to prove that (exists ((|zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| (_ BitVec 32))) (and (= |c_#length| (store |c_old(#length)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| |c_zalloc_or_die_#in~size#1|)) (= (_ bv0 1) (select |c_old(#valid)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base|)))) is different from true [2022-11-20 12:24:08,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:24:08,827 INFO L321 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2022-11-20 12:24:08,828 INFO L350 Elim1Store]: Elim1 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 2 case distinctions, treesize of input 21 treesize of output 30 [2022-11-20 12:24:08,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:24:08,841 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 12:24:09,643 INFO L134 CoverageAnalysis]: Checked inductivity of 13650 backedges. 1449 proven. 266 refuted. 0 times theorem prover too weak. 7323 trivial. 4612 not checked. [2022-11-20 12:24:09,643 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:24:13,234 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:24:13,234 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [999255087] [2022-11-20 12:24:13,234 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [999255087] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:24:13,234 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [301562334] [2022-11-20 12:24:13,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:24:13,235 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-20 12:24:13,235 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a7ba8e-776b-4861-9aee-0e05fbd33833/bin/uautomizer-ug76WZFUDN/cvc4 [2022-11-20 12:24:13,236 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a7ba8e-776b-4861-9aee-0e05fbd33833/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-20 12:24:13,238 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a7ba8e-776b-4861-9aee-0e05fbd33833/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt (31)] Waiting until timeout for monitored process [2022-11-20 12:25:08,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:25:10,565 INFO L263 TraceCheckSpWp]: Trace formula consists of 2166 conjuncts, 87 conjunts are in the unsatisfiable core [2022-11-20 12:25:10,604 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:25:10,618 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-20 12:25:10,627 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-20 12:25:11,750 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-20 12:25:11,750 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 18 [2022-11-20 12:25:11,793 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-20 12:25:11,793 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2022-11-20 12:25:13,172 INFO L321 Elim1Store]: treesize reduction 12, result has 42.9 percent of original size [2022-11-20 12:25:13,172 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 22 [2022-11-20 12:25:13,188 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-20 12:25:13,588 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-20 12:25:13,589 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 18 [2022-11-20 12:25:13,992 WARN L859 $PredicateComparison]: unable to prove that (exists ((|zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| (_ BitVec 32))) (= |c_#length| (store |c_old(#length)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| |c_zalloc_or_die_#in~size#1|))) is different from true [2022-11-20 12:25:14,646 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-20 12:25:14,646 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 22 [2022-11-20 12:25:15,454 INFO L134 CoverageAnalysis]: Checked inductivity of 13650 backedges. 1447 proven. 532 refuted. 0 times theorem prover too weak. 7323 trivial. 4348 not checked. [2022-11-20 12:25:15,454 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:25:17,184 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [301562334] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:25:17,184 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:25:17,184 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 32] total 45 [2022-11-20 12:25:17,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481451826] [2022-11-20 12:25:17,185 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:25:17,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-11-20 12:25:17,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:25:17,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-11-20 12:25:17,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=2088, Unknown=8, NotChecked=282, Total=2550 [2022-11-20 12:25:17,187 INFO L87 Difference]: Start difference. First operand 598 states and 666 transitions. Second operand has 46 states, 40 states have (on average 3.2) internal successors, (128), 37 states have internal predecessors, (128), 7 states have call successors, (9), 3 states have call predecessors, (9), 9 states have return successors, (10), 10 states have call predecessors, (10), 7 states have call successors, (10) [2022-11-20 12:25:26,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:25:26,345 INFO L93 Difference]: Finished difference Result 648 states and 724 transitions. [2022-11-20 12:25:26,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-20 12:25:26,346 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 40 states have (on average 3.2) internal successors, (128), 37 states have internal predecessors, (128), 7 states have call successors, (9), 3 states have call predecessors, (9), 9 states have return successors, (10), 10 states have call predecessors, (10), 7 states have call successors, (10) Word has length 246 [2022-11-20 12:25:26,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:25:26,350 INFO L225 Difference]: With dead ends: 648 [2022-11-20 12:25:26,350 INFO L226 Difference]: Without dead ends: 648 [2022-11-20 12:25:26,351 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 541 GetRequests, 472 SyntacticMatches, 2 SemanticMatches, 67 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 577 ImplicationChecksByTransitivity, 13.6s TimeCoverageRelationStatistics Valid=386, Invalid=3899, Unknown=17, NotChecked=390, Total=4692 [2022-11-20 12:25:26,352 INFO L413 NwaCegarLoop]: 165 mSDtfsCounter, 71 mSDsluCounter, 3255 mSDsCounter, 0 mSdLazyCounter, 1502 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 3420 SdHoareTripleChecker+Invalid, 3423 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 1502 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1902 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2022-11-20 12:25:26,352 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 3420 Invalid, 3423 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 1502 Invalid, 0 Unknown, 1902 Unchecked, 4.1s Time] [2022-11-20 12:25:26,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 648 states. [2022-11-20 12:25:26,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 648 to 648. [2022-11-20 12:25:26,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 648 states, 550 states have (on average 1.2181818181818183) internal successors, (670), 616 states have internal predecessors, (670), 27 states have call successors, (27), 7 states have call predecessors, (27), 7 states have return successors, (27), 24 states have call predecessors, (27), 27 states have call successors, (27) [2022-11-20 12:25:26,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 648 states to 648 states and 724 transitions. [2022-11-20 12:25:26,370 INFO L78 Accepts]: Start accepts. Automaton has 648 states and 724 transitions. Word has length 246 [2022-11-20 12:25:26,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:25:26,371 INFO L495 AbstractCegarLoop]: Abstraction has 648 states and 724 transitions. [2022-11-20 12:25:26,371 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 40 states have (on average 3.2) internal successors, (128), 37 states have internal predecessors, (128), 7 states have call successors, (9), 3 states have call predecessors, (9), 9 states have return successors, (10), 10 states have call predecessors, (10), 7 states have call successors, (10) [2022-11-20 12:25:26,372 INFO L276 IsEmpty]: Start isEmpty. Operand 648 states and 724 transitions. [2022-11-20 12:25:26,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2022-11-20 12:25:26,373 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:25:26,374 INFO L195 NwaCegarLoop]: trace histogram [159, 6, 6, 6, 6, 6, 6, 6, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:25:26,568 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a7ba8e-776b-4861-9aee-0e05fbd33833/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt (31)] Forceful destruction successful, exit code 0 [2022-11-20 12:25:26,630 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a7ba8e-776b-4861-9aee-0e05fbd33833/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Ended with exit code 0 [2022-11-20 12:25:26,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a7ba8e-776b-4861-9aee-0e05fbd33833/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt,30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a7ba8e-776b-4861-9aee-0e05fbd33833/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:25:26,799 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 72 more)] === [2022-11-20 12:25:26,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:25:26,799 INFO L85 PathProgramCache]: Analyzing trace with hash 1201590539, now seen corresponding path program 1 times [2022-11-20 12:25:26,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:25:26,800 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [433595727] [2022-11-20 12:25:26,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:25:26,801 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:25:26,801 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a7ba8e-776b-4861-9aee-0e05fbd33833/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:25:26,802 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a7ba8e-776b-4861-9aee-0e05fbd33833/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:25:26,803 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a7ba8e-776b-4861-9aee-0e05fbd33833/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2022-11-20 12:25:30,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:25:30,134 INFO L263 TraceCheckSpWp]: Trace formula consists of 2172 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 12:25:30,136 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:25:30,228 INFO L134 CoverageAnalysis]: Checked inductivity of 13650 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13650 trivial. 0 not checked. [2022-11-20 12:25:30,228 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:25:30,229 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:25:30,229 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [433595727] [2022-11-20 12:25:30,229 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [433595727] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:25:30,229 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:25:30,229 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:25:30,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083810998] [2022-11-20 12:25:30,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:25:30,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:25:30,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:25:30,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:25:30,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:25:30,231 INFO L87 Difference]: Start difference. First operand 648 states and 724 transitions. Second operand has 4 states, 3 states have (on average 12.333333333333334) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-20 12:25:30,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:25:30,635 INFO L93 Difference]: Finished difference Result 681 states and 760 transitions. [2022-11-20 12:25:30,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 12:25:30,635 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 12.333333333333334) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 247 [2022-11-20 12:25:30,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:25:30,639 INFO L225 Difference]: With dead ends: 681 [2022-11-20 12:25:30,639 INFO L226 Difference]: Without dead ends: 681 [2022-11-20 12:25:30,639 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 245 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:25:30,640 INFO L413 NwaCegarLoop]: 162 mSDtfsCounter, 245 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 246 SdHoareTripleChecker+Valid, 278 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-20 12:25:30,640 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [246 Valid, 278 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-20 12:25:30,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 681 states. [2022-11-20 12:25:30,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 681 to 647. [2022-11-20 12:25:30,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 647 states, 550 states have (on average 1.2163636363636363) internal successors, (669), 615 states have internal predecessors, (669), 27 states have call successors, (27), 7 states have call predecessors, (27), 7 states have return successors, (27), 24 states have call predecessors, (27), 27 states have call successors, (27) [2022-11-20 12:25:30,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 647 states to 647 states and 723 transitions. [2022-11-20 12:25:30,658 INFO L78 Accepts]: Start accepts. Automaton has 647 states and 723 transitions. Word has length 247 [2022-11-20 12:25:30,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:25:30,659 INFO L495 AbstractCegarLoop]: Abstraction has 647 states and 723 transitions. [2022-11-20 12:25:30,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 12.333333333333334) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-20 12:25:30,659 INFO L276 IsEmpty]: Start isEmpty. Operand 647 states and 723 transitions. [2022-11-20 12:25:30,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2022-11-20 12:25:30,661 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:25:30,661 INFO L195 NwaCegarLoop]: trace histogram [159, 6, 6, 6, 6, 6, 6, 6, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:25:30,707 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a7ba8e-776b-4861-9aee-0e05fbd33833/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (32)] Forceful destruction successful, exit code 0 [2022-11-20 12:25:30,886 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a7ba8e-776b-4861-9aee-0e05fbd33833/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:25:30,887 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 72 more)] === [2022-11-20 12:25:30,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:25:30,887 INFO L85 PathProgramCache]: Analyzing trace with hash 1201590540, now seen corresponding path program 1 times [2022-11-20 12:25:30,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:25:30,888 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [711773813] [2022-11-20 12:25:30,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:25:30,888 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:25:30,888 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a7ba8e-776b-4861-9aee-0e05fbd33833/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:25:30,889 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a7ba8e-776b-4861-9aee-0e05fbd33833/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:25:30,890 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a7ba8e-776b-4861-9aee-0e05fbd33833/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2022-11-20 12:25:34,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:25:34,243 INFO L263 TraceCheckSpWp]: Trace formula consists of 2172 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-20 12:25:34,246 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:25:34,744 INFO L134 CoverageAnalysis]: Checked inductivity of 13650 backedges. 176 proven. 1263 refuted. 0 times theorem prover too weak. 12211 trivial. 0 not checked. [2022-11-20 12:25:34,744 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:25:34,886 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:25:34,887 INFO L350 Elim1Store]: Elim1 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 22 treesize of output 26 [2022-11-20 12:25:36,425 INFO L134 CoverageAnalysis]: Checked inductivity of 13650 backedges. 176 proven. 1263 refuted. 0 times theorem prover too weak. 12211 trivial. 0 not checked. [2022-11-20 12:25:36,425 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:25:36,425 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [711773813] [2022-11-20 12:25:36,425 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [711773813] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:25:36,425 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:25:36,426 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2022-11-20 12:25:36,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661327132] [2022-11-20 12:25:36,426 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:25:36,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-20 12:25:36,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:25:36,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-20 12:25:36,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2022-11-20 12:25:36,429 INFO L87 Difference]: Start difference. First operand 647 states and 723 transitions. Second operand has 18 states, 17 states have (on average 4.470588235294118) internal successors, (76), 16 states have internal predecessors, (76), 3 states have call successors, (9), 1 states have call predecessors, (9), 3 states have return successors, (10), 5 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-20 12:25:40,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:25:40,305 INFO L93 Difference]: Finished difference Result 655 states and 734 transitions. [2022-11-20 12:25:40,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 12:25:40,307 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 4.470588235294118) internal successors, (76), 16 states have internal predecessors, (76), 3 states have call successors, (9), 1 states have call predecessors, (9), 3 states have return successors, (10), 5 states have call predecessors, (10), 3 states have call successors, (10) Word has length 247 [2022-11-20 12:25:40,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:25:40,310 INFO L225 Difference]: With dead ends: 655 [2022-11-20 12:25:40,310 INFO L226 Difference]: Without dead ends: 655 [2022-11-20 12:25:40,310 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 497 GetRequests, 477 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=80, Invalid=382, Unknown=0, NotChecked=0, Total=462 [2022-11-20 12:25:40,311 INFO L413 NwaCegarLoop]: 148 mSDtfsCounter, 449 mSDsluCounter, 1268 mSDsCounter, 0 mSdLazyCounter, 516 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 450 SdHoareTripleChecker+Valid, 1416 SdHoareTripleChecker+Invalid, 524 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 516 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-11-20 12:25:40,311 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [450 Valid, 1416 Invalid, 524 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 516 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2022-11-20 12:25:40,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 655 states. [2022-11-20 12:25:40,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 655 to 646. [2022-11-20 12:25:40,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 646 states, 550 states have (on average 1.2145454545454546) internal successors, (668), 614 states have internal predecessors, (668), 27 states have call successors, (27), 7 states have call predecessors, (27), 7 states have return successors, (27), 24 states have call predecessors, (27), 27 states have call successors, (27) [2022-11-20 12:25:40,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 646 states to 646 states and 722 transitions. [2022-11-20 12:25:40,327 INFO L78 Accepts]: Start accepts. Automaton has 646 states and 722 transitions. Word has length 247 [2022-11-20 12:25:40,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:25:40,328 INFO L495 AbstractCegarLoop]: Abstraction has 646 states and 722 transitions. [2022-11-20 12:25:40,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 4.470588235294118) internal successors, (76), 16 states have internal predecessors, (76), 3 states have call successors, (9), 1 states have call predecessors, (9), 3 states have return successors, (10), 5 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-20 12:25:40,328 INFO L276 IsEmpty]: Start isEmpty. Operand 646 states and 722 transitions. [2022-11-20 12:25:40,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2022-11-20 12:25:40,330 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:25:40,330 INFO L195 NwaCegarLoop]: trace histogram [159, 6, 6, 6, 6, 6, 6, 6, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:25:40,369 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a7ba8e-776b-4861-9aee-0e05fbd33833/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (33)] Forceful destruction successful, exit code 0 [2022-11-20 12:25:40,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a7ba8e-776b-4861-9aee-0e05fbd33833/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:25:40,555 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 72 more)] === [2022-11-20 12:25:40,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:25:40,555 INFO L85 PathProgramCache]: Analyzing trace with hash -617692852, now seen corresponding path program 1 times [2022-11-20 12:25:40,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:25:40,556 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [126197404] [2022-11-20 12:25:40,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:25:40,557 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:25:40,557 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a7ba8e-776b-4861-9aee-0e05fbd33833/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:25:40,558 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a7ba8e-776b-4861-9aee-0e05fbd33833/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:25:40,559 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a7ba8e-776b-4861-9aee-0e05fbd33833/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2022-11-20 12:25:43,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:25:43,860 INFO L263 TraceCheckSpWp]: Trace formula consists of 2186 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 12:25:43,863 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:25:43,883 INFO L134 CoverageAnalysis]: Checked inductivity of 13650 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13650 trivial. 0 not checked. [2022-11-20 12:25:43,883 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:25:43,884 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:25:43,884 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [126197404] [2022-11-20 12:25:43,884 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [126197404] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:25:43,884 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:25:43,884 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 12:25:43,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123179359] [2022-11-20 12:25:43,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:25:43,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:25:43,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:25:43,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:25:43,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:25:43,886 INFO L87 Difference]: Start difference. First operand 646 states and 722 transitions. Second operand has 3 states, 2 states have (on average 19.5) internal successors, (39), 3 states have internal predecessors, (39), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-11-20 12:25:44,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:25:44,205 INFO L93 Difference]: Finished difference Result 674 states and 752 transitions. [2022-11-20 12:25:44,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:25:44,205 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 19.5) internal successors, (39), 3 states have internal predecessors, (39), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 249 [2022-11-20 12:25:44,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:25:44,208 INFO L225 Difference]: With dead ends: 674 [2022-11-20 12:25:44,208 INFO L226 Difference]: Without dead ends: 674 [2022-11-20 12:25:44,208 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 247 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:25:44,208 INFO L413 NwaCegarLoop]: 163 mSDtfsCounter, 61 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 260 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 12:25:44,209 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 260 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 12:25:44,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 674 states. [2022-11-20 12:25:44,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 674 to 645. [2022-11-20 12:25:44,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 645 states, 550 states have (on average 1.2127272727272727) internal successors, (667), 613 states have internal predecessors, (667), 27 states have call successors, (27), 7 states have call predecessors, (27), 7 states have return successors, (27), 24 states have call predecessors, (27), 27 states have call successors, (27) [2022-11-20 12:25:44,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 645 states to 645 states and 721 transitions. [2022-11-20 12:25:44,223 INFO L78 Accepts]: Start accepts. Automaton has 645 states and 721 transitions. Word has length 249 [2022-11-20 12:25:44,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:25:44,224 INFO L495 AbstractCegarLoop]: Abstraction has 645 states and 721 transitions. [2022-11-20 12:25:44,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 19.5) internal successors, (39), 3 states have internal predecessors, (39), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-11-20 12:25:44,224 INFO L276 IsEmpty]: Start isEmpty. Operand 645 states and 721 transitions. [2022-11-20 12:25:44,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2022-11-20 12:25:44,226 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:25:44,226 INFO L195 NwaCegarLoop]: trace histogram [159, 6, 6, 6, 6, 6, 6, 6, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:25:44,270 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a7ba8e-776b-4861-9aee-0e05fbd33833/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (34)] Forceful destruction successful, exit code 0 [2022-11-20 12:25:44,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a7ba8e-776b-4861-9aee-0e05fbd33833/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:25:44,451 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 72 more)] === [2022-11-20 12:25:44,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:25:44,451 INFO L85 PathProgramCache]: Analyzing trace with hash -617692851, now seen corresponding path program 1 times [2022-11-20 12:25:44,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:25:44,453 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1631195832] [2022-11-20 12:25:44,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:25:44,453 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:25:44,453 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a7ba8e-776b-4861-9aee-0e05fbd33833/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:25:44,455 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a7ba8e-776b-4861-9aee-0e05fbd33833/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:25:44,498 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a7ba8e-776b-4861-9aee-0e05fbd33833/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2022-11-20 12:25:47,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:25:47,859 INFO L263 TraceCheckSpWp]: Trace formula consists of 2186 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-20 12:25:47,862 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:25:48,136 INFO L134 CoverageAnalysis]: Checked inductivity of 13650 backedges. 88 proven. 1351 refuted. 0 times theorem prover too weak. 12211 trivial. 0 not checked. [2022-11-20 12:25:48,136 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:25:48,249 INFO L350 Elim1Store]: Elim1 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 8 treesize of output 6 [2022-11-20 12:25:48,987 INFO L134 CoverageAnalysis]: Checked inductivity of 13650 backedges. 88 proven. 1351 refuted. 0 times theorem prover too weak. 12211 trivial. 0 not checked. [2022-11-20 12:25:48,987 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:25:48,987 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1631195832] [2022-11-20 12:25:48,987 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1631195832] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:25:48,987 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:25:48,988 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2022-11-20 12:25:48,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522377225] [2022-11-20 12:25:48,988 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:25:48,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-20 12:25:48,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:25:48,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-20 12:25:48,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=262, Unknown=0, NotChecked=0, Total=306 [2022-11-20 12:25:48,989 INFO L87 Difference]: Start difference. First operand 645 states and 721 transitions. Second operand has 18 states, 17 states have (on average 4.823529411764706) internal successors, (82), 16 states have internal predecessors, (82), 3 states have call successors, (10), 1 states have call predecessors, (10), 3 states have return successors, (11), 5 states have call predecessors, (11), 3 states have call successors, (11) [2022-11-20 12:25:51,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:25:51,637 INFO L93 Difference]: Finished difference Result 653 states and 732 transitions. [2022-11-20 12:25:51,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-20 12:25:51,638 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 4.823529411764706) internal successors, (82), 16 states have internal predecessors, (82), 3 states have call successors, (10), 1 states have call predecessors, (10), 3 states have return successors, (11), 5 states have call predecessors, (11), 3 states have call successors, (11) Word has length 249 [2022-11-20 12:25:51,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:25:51,641 INFO L225 Difference]: With dead ends: 653 [2022-11-20 12:25:51,641 INFO L226 Difference]: Without dead ends: 653 [2022-11-20 12:25:51,641 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 504 GetRequests, 482 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=92, Invalid=460, Unknown=0, NotChecked=0, Total=552 [2022-11-20 12:25:51,642 INFO L413 NwaCegarLoop]: 149 mSDtfsCounter, 471 mSDsluCounter, 1266 mSDsCounter, 0 mSdLazyCounter, 477 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 472 SdHoareTripleChecker+Valid, 1415 SdHoareTripleChecker+Invalid, 489 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 477 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-11-20 12:25:51,642 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [472 Valid, 1415 Invalid, 489 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 477 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-11-20 12:25:51,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 653 states. [2022-11-20 12:25:51,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 653 to 644. [2022-11-20 12:25:51,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 644 states, 550 states have (on average 1.210909090909091) internal successors, (666), 612 states have internal predecessors, (666), 27 states have call successors, (27), 7 states have call predecessors, (27), 7 states have return successors, (27), 24 states have call predecessors, (27), 27 states have call successors, (27) [2022-11-20 12:25:51,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 644 states to 644 states and 720 transitions. [2022-11-20 12:25:51,655 INFO L78 Accepts]: Start accepts. Automaton has 644 states and 720 transitions. Word has length 249 [2022-11-20 12:25:51,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:25:51,656 INFO L495 AbstractCegarLoop]: Abstraction has 644 states and 720 transitions. [2022-11-20 12:25:51,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 4.823529411764706) internal successors, (82), 16 states have internal predecessors, (82), 3 states have call successors, (10), 1 states have call predecessors, (10), 3 states have return successors, (11), 5 states have call predecessors, (11), 3 states have call successors, (11) [2022-11-20 12:25:51,656 INFO L276 IsEmpty]: Start isEmpty. Operand 644 states and 720 transitions. [2022-11-20 12:25:51,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2022-11-20 12:25:51,658 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:25:51,658 INFO L195 NwaCegarLoop]: trace histogram [159, 6, 6, 6, 6, 6, 6, 6, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:25:51,699 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a7ba8e-776b-4861-9aee-0e05fbd33833/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (35)] Forceful destruction successful, exit code 0 [2022-11-20 12:25:51,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a7ba8e-776b-4861-9aee-0e05fbd33833/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:25:51,884 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 72 more)] === [2022-11-20 12:25:51,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:25:51,884 INFO L85 PathProgramCache]: Analyzing trace with hash -2047797161, now seen corresponding path program 1 times [2022-11-20 12:25:51,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:25:51,885 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1807980386] [2022-11-20 12:25:51,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:25:51,885 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:25:51,886 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a7ba8e-776b-4861-9aee-0e05fbd33833/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:25:51,887 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a7ba8e-776b-4861-9aee-0e05fbd33833/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:25:51,891 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a7ba8e-776b-4861-9aee-0e05fbd33833/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2022-11-20 12:25:56,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:25:56,358 INFO L263 TraceCheckSpWp]: Trace formula consists of 2201 conjuncts, 51 conjunts are in the unsatisfiable core [2022-11-20 12:25:56,364 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:25:56,367 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-20 12:25:56,558 WARN L859 $PredicateComparison]: unable to prove that (exists ((|zalloc_or_die_calloc_model_~ptr~0#1.base| (_ BitVec 32))) (and (= (select |c_old(#valid)| |zalloc_or_die_calloc_model_~ptr~0#1.base|) (_ bv0 1)) (exists ((v_ArrVal_24197 (_ BitVec 1))) (= (store |c_old(#valid)| |zalloc_or_die_calloc_model_~ptr~0#1.base| v_ArrVal_24197) |c_#valid|)))) is different from true [2022-11-20 12:25:56,724 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-20 12:25:56,725 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2022-11-20 12:25:56,747 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_24198 (_ BitVec 1))) (= (store |c_old(#valid)| |c_zalloc_or_die_calloc_model_~ptr~0#1.base| v_ArrVal_24198) |c_#valid|)) is different from true [2022-11-20 12:25:56,792 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_24198 (_ BitVec 1))) (= (store |c_old(#valid)| |c_zalloc_or_die_calloc_model_#res#1.base| v_ArrVal_24198) |c_#valid|)) is different from true [2022-11-20 12:25:56,799 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_24198 (_ BitVec 1))) (= |c_#valid| (store |c_old(#valid)| |c_zalloc_or_die_~ptr~1#1.base| v_ArrVal_24198))) is different from true [2022-11-20 12:25:56,806 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_24198 (_ BitVec 1))) (= |c_#valid| (store |c_old(#valid)| |c_zalloc_or_die_#res#1.base| v_ArrVal_24198))) is different from true [2022-11-20 12:25:56,837 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-20 12:25:56,838 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 24 [2022-11-20 12:25:56,979 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_24199 (_ BitVec 1))) (= |c_#valid| (store |c_old(#valid)| |c_zalloc_or_die_calloc_model_~ptr~0#1.base| v_ArrVal_24199))) is different from true [2022-11-20 12:25:57,024 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_24199 (_ BitVec 1))) (= |c_#valid| (store |c_old(#valid)| |c_zalloc_or_die_calloc_model_#res#1.base| v_ArrVal_24199))) is different from true [2022-11-20 12:25:57,031 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_24199 (_ BitVec 1))) (= (store |c_old(#valid)| |c_zalloc_or_die_~ptr~1#1.base| v_ArrVal_24199) |c_#valid|)) is different from true [2022-11-20 12:25:57,038 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_24199 (_ BitVec 1))) (= (store |c_old(#valid)| |c_zalloc_or_die_#res#1.base| v_ArrVal_24199) |c_#valid|)) is different from true [2022-11-20 12:25:57,075 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-20 12:25:57,075 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 28 [2022-11-20 12:25:57,287 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_24200 (_ BitVec 1))) (= (store |c_old(#valid)| |c_zalloc_or_die_calloc_model_~ptr~0#1.base| v_ArrVal_24200) |c_#valid|)) is different from true [2022-11-20 12:25:57,344 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_24200 (_ BitVec 1))) (= |c_#valid| (store |c_old(#valid)| |c_zalloc_or_die_calloc_model_#res#1.base| v_ArrVal_24200))) is different from true [2022-11-20 12:25:57,353 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_24200 (_ BitVec 1))) (= (store |c_old(#valid)| |c_zalloc_or_die_~ptr~1#1.base| v_ArrVal_24200) |c_#valid|)) is different from true [2022-11-20 12:25:57,362 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_24200 (_ BitVec 1))) (= |c_#valid| (store |c_old(#valid)| |c_zalloc_or_die_#res#1.base| v_ArrVal_24200))) is different from true [2022-11-20 12:25:57,406 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-20 12:25:57,406 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 31 [2022-11-20 12:25:57,624 WARN L859 $PredicateComparison]: unable to prove that (exists ((|zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| (_ BitVec 32))) (= (store |c_old(#valid)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| (_ bv1 1)) |c_#valid|)) is different from true [2022-11-20 12:25:58,088 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-20 12:25:58,088 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 34 [2022-11-20 12:25:58,824 INFO L134 CoverageAnalysis]: Checked inductivity of 13650 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 7330 trivial. 6315 not checked. [2022-11-20 12:25:58,824 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:25:59,375 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:25:59,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1807980386] [2022-11-20 12:25:59,375 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1807980386] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:25:59,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [881172350] [2022-11-20 12:25:59,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:25:59,376 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-20 12:25:59,376 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a7ba8e-776b-4861-9aee-0e05fbd33833/bin/uautomizer-ug76WZFUDN/cvc4 [2022-11-20 12:25:59,377 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a7ba8e-776b-4861-9aee-0e05fbd33833/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-20 12:25:59,378 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a7ba8e-776b-4861-9aee-0e05fbd33833/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt (37)] Waiting until timeout for monitored process