./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/memsafety/test-0235-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343f2d70-303e-4e45-907c-48b7b4f3fac5/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343f2d70-303e-4e45-907c-48b7b4f3fac5/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_343f2d70-303e-4e45-907c-48b7b4f3fac5/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343f2d70-303e-4e45-907c-48b7b4f3fac5/bin/uautomizer-ug76WZFUDN/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety/test-0235-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343f2d70-303e-4e45-907c-48b7b4f3fac5/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_343f2d70-303e-4e45-907c-48b7b4f3fac5/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 5243781ee83706d005235269371a592cabf9c2dbc613c235cbe81d6e89d326d7 --- 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 12:38:58,026 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 12:38:58,029 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 12:38:58,062 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 12:38:58,067 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 12:38:58,073 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 12:38:58,076 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 12:38:58,080 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 12:38:58,083 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 12:38:58,091 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 12:38:58,093 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 12:38:58,095 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 12:38:58,096 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 12:38:58,099 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 12:38:58,100 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 12:38:58,103 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 12:38:58,106 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 12:38:58,108 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 12:38:58,110 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 12:38:58,116 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 12:38:58,120 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 12:38:58,122 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 12:38:58,124 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 12:38:58,126 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 12:38:58,133 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 12:38:58,133 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 12:38:58,134 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 12:38:58,136 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 12:38:58,137 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 12:38:58,138 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 12:38:58,139 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 12:38:58,140 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 12:38:58,142 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 12:38:58,144 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 12:38:58,148 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 12:38:58,148 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 12:38:58,149 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 12:38:58,149 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 12:38:58,150 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 12:38:58,151 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 12:38:58,152 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 12:38:58,153 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343f2d70-303e-4e45-907c-48b7b4f3fac5/bin/uautomizer-ug76WZFUDN/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-11-20 12:38:58,209 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 12:38:58,209 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 12:38:58,210 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 12:38:58,210 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 12:38:58,211 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 12:38:58,212 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 12:38:58,213 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 12:38:58,213 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 12:38:58,213 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 12:38:58,214 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 12:38:58,215 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 12:38:58,215 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 12:38:58,215 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 12:38:58,216 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 12:38:58,216 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 12:38:58,216 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-20 12:38:58,217 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-20 12:38:58,217 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-20 12:38:58,217 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 12:38:58,217 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-20 12:38:58,218 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 12:38:58,218 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 12:38:58,218 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 12:38:58,219 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 12:38:58,219 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 12:38:58,219 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:38:58,219 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 12:38:58,220 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 12:38:58,220 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 12:38:58,221 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 12:38:58,221 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_343f2d70-303e-4e45-907c-48b7b4f3fac5/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343f2d70-303e-4e45-907c-48b7b4f3fac5/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5243781ee83706d005235269371a592cabf9c2dbc613c235cbe81d6e89d326d7 [2022-11-20 12:38:58,579 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 12:38:58,617 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 12:38:58,620 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 12:38:58,622 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 12:38:58,623 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 12:38:58,624 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343f2d70-303e-4e45-907c-48b7b4f3fac5/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/memsafety/test-0235-2.i [2022-11-20 12:39:02,093 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 12:39:02,406 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 12:39:02,406 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343f2d70-303e-4e45-907c-48b7b4f3fac5/sv-benchmarks/c/memsafety/test-0235-2.i [2022-11-20 12:39:02,422 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343f2d70-303e-4e45-907c-48b7b4f3fac5/bin/uautomizer-ug76WZFUDN/data/fc737703b/e3a33a95e1bf4eba8557e3d4d7777b40/FLAG2d828577f [2022-11-20 12:39:02,447 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343f2d70-303e-4e45-907c-48b7b4f3fac5/bin/uautomizer-ug76WZFUDN/data/fc737703b/e3a33a95e1bf4eba8557e3d4d7777b40 [2022-11-20 12:39:02,450 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 12:39:02,452 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 12:39:02,454 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 12:39:02,454 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 12:39:02,459 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 12:39:02,460 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:39:02" (1/1) ... [2022-11-20 12:39:02,461 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d247954 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:39:02, skipping insertion in model container [2022-11-20 12:39:02,461 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:39:02" (1/1) ... [2022-11-20 12:39:02,471 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 12:39:02,513 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 12:39:02,975 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:39:02,993 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 12:39:03,092 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:39:03,159 INFO L208 MainTranslator]: Completed translation [2022-11-20 12:39:03,160 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:39:03 WrapperNode [2022-11-20 12:39:03,160 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 12:39:03,162 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 12:39:03,162 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 12:39:03,163 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 12:39:03,174 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:39:03" (1/1) ... [2022-11-20 12:39:03,207 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:39:03" (1/1) ... [2022-11-20 12:39:03,271 INFO L138 Inliner]: procedures = 188, calls = 71, calls flagged for inlining = 13, calls inlined = 13, statements flattened = 237 [2022-11-20 12:39:03,271 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 12:39:03,273 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 12:39:03,274 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 12:39:03,274 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 12:39:03,286 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:39:03" (1/1) ... [2022-11-20 12:39:03,287 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:39:03" (1/1) ... [2022-11-20 12:39:03,299 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:39:03" (1/1) ... [2022-11-20 12:39:03,299 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:39:03" (1/1) ... [2022-11-20 12:39:03,315 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:39:03" (1/1) ... [2022-11-20 12:39:03,322 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:39:03" (1/1) ... [2022-11-20 12:39:03,325 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:39:03" (1/1) ... [2022-11-20 12:39:03,327 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:39:03" (1/1) ... [2022-11-20 12:39:03,331 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 12:39:03,335 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 12:39:03,335 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 12:39:03,335 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 12:39:03,336 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:39:03" (1/1) ... [2022-11-20 12:39:03,360 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:39:03,375 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343f2d70-303e-4e45-907c-48b7b4f3fac5/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:39:03,391 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343f2d70-303e-4e45-907c-48b7b4f3fac5/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 12:39:03,435 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343f2d70-303e-4e45-907c-48b7b4f3fac5/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 12:39:03,473 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-20 12:39:03,473 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 12:39:03,473 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-20 12:39:03,474 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-20 12:39:03,474 INFO L130 BoogieDeclarations]: Found specification of procedure zalloc_or_die [2022-11-20 12:39:03,474 INFO L138 BoogieDeclarations]: Found implementation of procedure zalloc_or_die [2022-11-20 12:39:03,474 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 12:39:03,474 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-20 12:39:03,474 INFO L130 BoogieDeclarations]: Found specification of procedure l0_destroy [2022-11-20 12:39:03,474 INFO L138 BoogieDeclarations]: Found implementation of procedure l0_destroy [2022-11-20 12:39:03,475 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 12:39:03,475 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 12:39:03,475 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 12:39:03,640 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 12:39:03,642 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 12:39:04,498 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 12:39:04,514 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 12:39:04,514 INFO L300 CfgBuilder]: Removed 10 assume(true) statements. [2022-11-20 12:39:04,517 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:39:04 BoogieIcfgContainer [2022-11-20 12:39:04,517 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 12:39:04,524 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 12:39:04,524 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 12:39:04,528 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 12:39:04,528 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 12:39:02" (1/3) ... [2022-11-20 12:39:04,529 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f724990 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:39:04, skipping insertion in model container [2022-11-20 12:39:04,530 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:39:03" (2/3) ... [2022-11-20 12:39:04,532 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f724990 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:39:04, skipping insertion in model container [2022-11-20 12:39:04,532 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:39:04" (3/3) ... [2022-11-20 12:39:04,534 INFO L112 eAbstractionObserver]: Analyzing ICFG test-0235-2.i [2022-11-20 12:39:04,557 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 12:39:04,557 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 87 error locations. [2022-11-20 12:39:04,642 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 12:39:04,651 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;@381a0fd0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 12:39:04,652 INFO L358 AbstractCegarLoop]: Starting to check reachability of 87 error locations. [2022-11-20 12:39:04,660 INFO L276 IsEmpty]: Start isEmpty. Operand has 238 states, 136 states have (on average 1.875) internal successors, (255), 223 states have internal predecessors, (255), 12 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-11-20 12:39:04,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-20 12:39:04,668 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:39:04,668 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-20 12:39:04,669 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr32REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 84 more)] === [2022-11-20 12:39:04,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:39:04,675 INFO L85 PathProgramCache]: Analyzing trace with hash 930118, now seen corresponding path program 1 times [2022-11-20 12:39:04,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:39:04,688 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053899639] [2022-11-20 12:39:04,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:39:04,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:39:04,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:39:04,853 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 12:39:04,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:39:04,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053899639] [2022-11-20 12:39:04,855 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1053899639] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:39:04,855 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:39:04,856 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 12:39:04,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048967528] [2022-11-20 12:39:04,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:39:04,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-20 12:39:04,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:39:04,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-20 12:39:04,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 12:39:04,928 INFO L87 Difference]: Start difference. First operand has 238 states, 136 states have (on average 1.875) internal successors, (255), 223 states have internal predecessors, (255), 12 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) 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 12:39:05,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:39:05,007 INFO L93 Difference]: Finished difference Result 238 states and 268 transitions. [2022-11-20 12:39:05,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-20 12:39:05,017 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 12:39:05,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:39:05,030 INFO L225 Difference]: With dead ends: 238 [2022-11-20 12:39:05,030 INFO L226 Difference]: Without dead ends: 236 [2022-11-20 12:39:05,033 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 12:39:05,039 INFO L413 NwaCegarLoop]: 268 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, 268 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 12:39:05,041 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 268 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 12:39:05,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2022-11-20 12:39:05,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 236. [2022-11-20 12:39:05,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 135 states have (on average 1.7925925925925925) internal successors, (242), 221 states have internal predecessors, (242), 12 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-11-20 12:39:05,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 266 transitions. [2022-11-20 12:39:05,127 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 266 transitions. Word has length 4 [2022-11-20 12:39:05,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:39:05,127 INFO L495 AbstractCegarLoop]: Abstraction has 236 states and 266 transitions. [2022-11-20 12:39:05,128 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 12:39:05,128 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 266 transitions. [2022-11-20 12:39:05,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-20 12:39:05,129 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:39:05,129 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-20 12:39:05,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 12:39:05,130 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting zalloc_or_dieErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 84 more)] === [2022-11-20 12:39:05,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:39:05,131 INFO L85 PathProgramCache]: Analyzing trace with hash 889937946, now seen corresponding path program 1 times [2022-11-20 12:39:05,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:39:05,132 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484006521] [2022-11-20 12:39:05,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:39:05,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:39:05,174 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:39:05,174 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1501562047] [2022-11-20 12:39:05,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:39:05,175 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:39:05,175 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343f2d70-303e-4e45-907c-48b7b4f3fac5/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:39:05,180 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343f2d70-303e-4e45-907c-48b7b4f3fac5/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:39:05,191 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343f2d70-303e-4e45-907c-48b7b4f3fac5/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 12:39:05,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:39:05,330 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-20 12:39:05,336 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:39:05,438 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 12:39:05,452 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 12:39:05,452 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:39:05,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:39:05,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484006521] [2022-11-20 12:39:05,455 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:39:05,460 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1501562047] [2022-11-20 12:39:05,461 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1501562047] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:39:05,461 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:39:05,461 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 12:39:05,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460050816] [2022-11-20 12:39:05,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:39:05,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:39:05,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:39:05,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:39:05,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:39:05,467 INFO L87 Difference]: Start difference. First operand 236 states and 266 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 12:39:05,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:39:05,754 INFO L93 Difference]: Finished difference Result 235 states and 265 transitions. [2022-11-20 12:39:05,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:39:05,755 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 12:39:05,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:39:05,757 INFO L225 Difference]: With dead ends: 235 [2022-11-20 12:39:05,757 INFO L226 Difference]: Without dead ends: 235 [2022-11-20 12:39:05,757 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 12:39:05,758 INFO L413 NwaCegarLoop]: 260 mSDtfsCounter, 9 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 428 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 12:39:05,759 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 428 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 12:39:05,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2022-11-20 12:39:05,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 235. [2022-11-20 12:39:05,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 235 states, 135 states have (on average 1.7851851851851852) internal successors, (241), 220 states have internal predecessors, (241), 12 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-11-20 12:39:05,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 265 transitions. [2022-11-20 12:39:05,772 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 265 transitions. Word has length 6 [2022-11-20 12:39:05,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:39:05,796 INFO L495 AbstractCegarLoop]: Abstraction has 235 states and 265 transitions. [2022-11-20 12:39:05,796 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 12:39:05,796 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 265 transitions. [2022-11-20 12:39:05,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-20 12:39:05,797 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:39:05,797 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:39:05,810 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343f2d70-303e-4e45-907c-48b7b4f3fac5/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-20 12:39:05,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343f2d70-303e-4e45-907c-48b7b4f3fac5/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:39:05,998 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 84 more)] === [2022-11-20 12:39:05,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:39:05,999 INFO L85 PathProgramCache]: Analyzing trace with hash 1818272976, now seen corresponding path program 1 times [2022-11-20 12:39:05,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:39:06,000 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38336407] [2022-11-20 12:39:06,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:39:06,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:39:06,014 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:39:06,014 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1245551767] [2022-11-20 12:39:06,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:39:06,014 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:39:06,015 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343f2d70-303e-4e45-907c-48b7b4f3fac5/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:39:06,016 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343f2d70-303e-4e45-907c-48b7b4f3fac5/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:39:06,035 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343f2d70-303e-4e45-907c-48b7b4f3fac5/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 12:39:06,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:39:06,122 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-20 12:39:06,125 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:39:06,333 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 12:39:06,367 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 12:39:06,367 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:39:06,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:39:06,368 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38336407] [2022-11-20 12:39:06,368 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:39:06,368 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1245551767] [2022-11-20 12:39:06,369 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1245551767] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:39:06,369 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:39:06,369 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:39:06,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46741488] [2022-11-20 12:39:06,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:39:06,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:39:06,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:39:06,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:39:06,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:39:06,371 INFO L87 Difference]: Start difference. First operand 235 states and 265 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 12:39:06,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:39:06,623 INFO L93 Difference]: Finished difference Result 244 states and 274 transitions. [2022-11-20 12:39:06,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 12:39:06,623 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 12:39:06,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:39:06,627 INFO L225 Difference]: With dead ends: 244 [2022-11-20 12:39:06,627 INFO L226 Difference]: Without dead ends: 244 [2022-11-20 12:39:06,627 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 12:39:06,631 INFO L413 NwaCegarLoop]: 254 mSDtfsCounter, 16 mSDsluCounter, 439 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 693 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 12:39:06,633 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 693 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 12:39:06,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2022-11-20 12:39:06,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 244. [2022-11-20 12:39:06,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 143 states have (on average 1.7482517482517483) internal successors, (250), 228 states have internal predecessors, (250), 12 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-11-20 12:39:06,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 274 transitions. [2022-11-20 12:39:06,659 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 274 transitions. Word has length 7 [2022-11-20 12:39:06,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:39:06,663 INFO L495 AbstractCegarLoop]: Abstraction has 244 states and 274 transitions. [2022-11-20 12:39:06,663 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 12:39:06,665 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 274 transitions. [2022-11-20 12:39:06,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-20 12:39:06,669 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:39:06,669 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 12:39:06,681 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343f2d70-303e-4e45-907c-48b7b4f3fac5/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-20 12:39:06,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343f2d70-303e-4e45-907c-48b7b4f3fac5/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:39:06,881 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 84 more)] === [2022-11-20 12:39:06,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:39:06,882 INFO L85 PathProgramCache]: Analyzing trace with hash 1632464615, now seen corresponding path program 1 times [2022-11-20 12:39:06,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:39:06,882 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202154001] [2022-11-20 12:39:06,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:39:06,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:39:06,909 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:39:06,909 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [680054609] [2022-11-20 12:39:06,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:39:06,910 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:39:06,910 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343f2d70-303e-4e45-907c-48b7b4f3fac5/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:39:06,911 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343f2d70-303e-4e45-907c-48b7b4f3fac5/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:39:06,931 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343f2d70-303e-4e45-907c-48b7b4f3fac5/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 12:39:07,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:39:07,103 INFO L263 TraceCheckSpWp]: Trace formula consists of 504 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-20 12:39:07,108 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:39:07,174 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 12:39:07,189 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 12:39:11,543 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 12:39:11,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:39:11,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202154001] [2022-11-20 12:39:11,690 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:39:11,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [680054609] [2022-11-20 12:39:11,690 WARN L319 FreeRefinementEngine]: Global settings require throwing the following exception [2022-11-20 12:39:11,703 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343f2d70-303e-4e45-907c-48b7b4f3fac5/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-11-20 12:39:11,703 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343f2d70-303e-4e45-907c-48b7b4f3fac5/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 139 [2022-11-20 12:39:11,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343f2d70-303e-4e45-907c-48b7b4f3fac5/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:39:11,891 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_343f2d70-303e-4e45-907c-48b7b4f3fac5/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.parseCheckSatResult(Executor.java:262) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.checkSat(Scriptor.java:155) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.checkSat(ManagedScript.java:139) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker.checkImplication(MonolithicImplicationChecker.java:85) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.compare(PredicateUnifier.java:898) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.(PredicateUnifier.java:772) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:346) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:306) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp$UnifyPostprocessor.postprocess(TraceCheckSpWp.java:582) 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) ... 44 more [2022-11-20 12:39:11,895 INFO L158 Benchmark]: Toolchain (without parser) took 9442.88ms. Allocated memory is still 167.8MB. Free memory was 121.7MB in the beginning and 123.8MB in the end (delta: -2.1MB). Peak memory consumption was 702.4kB. Max. memory is 16.1GB. [2022-11-20 12:39:11,895 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 125.8MB. Free memory was 68.2MB in the beginning and 68.0MB in the end (delta: 117.6kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 12:39:11,896 INFO L158 Benchmark]: CACSL2BoogieTranslator took 707.15ms. Allocated memory is still 167.8MB. Free memory was 121.7MB in the beginning and 100.1MB in the end (delta: 21.6MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2022-11-20 12:39:11,896 INFO L158 Benchmark]: Boogie Procedure Inliner took 109.95ms. Allocated memory is still 167.8MB. Free memory was 100.1MB in the beginning and 97.1MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-20 12:39:11,896 INFO L158 Benchmark]: Boogie Preprocessor took 58.95ms. Allocated memory is still 167.8MB. Free memory was 97.1MB in the beginning and 95.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 12:39:11,897 INFO L158 Benchmark]: RCFGBuilder took 1182.40ms. Allocated memory is still 167.8MB. Free memory was 94.5MB in the beginning and 104.5MB in the end (delta: -10.1MB). Peak memory consumption was 7.8MB. Max. memory is 16.1GB. [2022-11-20 12:39:11,897 INFO L158 Benchmark]: TraceAbstraction took 7370.33ms. Allocated memory is still 167.8MB. Free memory was 104.5MB in the beginning and 123.8MB in the end (delta: -19.3MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 12:39:11,900 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23ms. Allocated memory is still 125.8MB. Free memory was 68.2MB in the beginning and 68.0MB in the end (delta: 117.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 707.15ms. Allocated memory is still 167.8MB. Free memory was 121.7MB in the beginning and 100.1MB in the end (delta: 21.6MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 109.95ms. Allocated memory is still 167.8MB. Free memory was 100.1MB in the beginning and 97.1MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 58.95ms. Allocated memory is still 167.8MB. Free memory was 97.1MB in the beginning and 95.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 1182.40ms. Allocated memory is still 167.8MB. Free memory was 94.5MB in the beginning and 104.5MB in the end (delta: -10.1MB). Peak memory consumption was 7.8MB. Max. memory is 16.1GB. * TraceAbstraction took 7370.33ms. Allocated memory is still 167.8MB. Free memory was 104.5MB in the beginning and 123.8MB in the end (delta: -19.3MB). 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_343f2d70-303e-4e45-907c-48b7b4f3fac5/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_343f2d70-303e-4e45-907c-48b7b4f3fac5/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-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343f2d70-303e-4e45-907c-48b7b4f3fac5/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343f2d70-303e-4e45-907c-48b7b4f3fac5/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_343f2d70-303e-4e45-907c-48b7b4f3fac5/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343f2d70-303e-4e45-907c-48b7b4f3fac5/bin/uautomizer-ug76WZFUDN/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety/test-0235-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343f2d70-303e-4e45-907c-48b7b4f3fac5/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_343f2d70-303e-4e45-907c-48b7b4f3fac5/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 5243781ee83706d005235269371a592cabf9c2dbc613c235cbe81d6e89d326d7 --- 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 12:39:14,519 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 12:39:14,521 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 12:39:14,547 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 12:39:14,548 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 12:39:14,549 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 12:39:14,550 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 12:39:14,553 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 12:39:14,555 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 12:39:14,556 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 12:39:14,557 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 12:39:14,559 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 12:39:14,559 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 12:39:14,561 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 12:39:14,562 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 12:39:14,564 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 12:39:14,565 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 12:39:14,566 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 12:39:14,568 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 12:39:14,570 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 12:39:14,572 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 12:39:14,574 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 12:39:14,575 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 12:39:14,577 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 12:39:14,581 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 12:39:14,582 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 12:39:14,582 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 12:39:14,583 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 12:39:14,584 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 12:39:14,585 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 12:39:14,586 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 12:39:14,587 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 12:39:14,588 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 12:39:14,589 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 12:39:14,590 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 12:39:14,606 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 12:39:14,607 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 12:39:14,608 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 12:39:14,608 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 12:39:14,609 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 12:39:14,610 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 12:39:14,611 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343f2d70-303e-4e45-907c-48b7b4f3fac5/bin/uautomizer-ug76WZFUDN/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2022-11-20 12:39:14,664 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 12:39:14,665 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 12:39:14,667 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 12:39:14,667 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 12:39:14,668 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 12:39:14,668 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 12:39:14,669 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 12:39:14,670 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 12:39:14,670 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 12:39:14,670 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 12:39:14,671 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 12:39:14,672 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 12:39:14,672 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 12:39:14,672 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 12:39:14,672 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 12:39:14,673 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-20 12:39:14,673 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-20 12:39:14,673 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-20 12:39:14,673 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 12:39:14,674 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-20 12:39:14,674 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-20 12:39:14,674 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-20 12:39:14,674 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 12:39:14,675 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 12:39:14,675 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 12:39:14,675 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 12:39:14,675 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 12:39:14,676 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:39:14,676 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 12:39:14,676 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 12:39:14,677 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-20 12:39:14,677 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-20 12:39:14,677 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-20 12:39:14,677 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_343f2d70-303e-4e45-907c-48b7b4f3fac5/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343f2d70-303e-4e45-907c-48b7b4f3fac5/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5243781ee83706d005235269371a592cabf9c2dbc613c235cbe81d6e89d326d7 [2022-11-20 12:39:15,109 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 12:39:15,143 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 12:39:15,145 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 12:39:15,147 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 12:39:15,149 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 12:39:15,150 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343f2d70-303e-4e45-907c-48b7b4f3fac5/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/memsafety/test-0235-2.i [2022-11-20 12:39:18,400 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 12:39:18,773 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 12:39:18,773 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343f2d70-303e-4e45-907c-48b7b4f3fac5/sv-benchmarks/c/memsafety/test-0235-2.i [2022-11-20 12:39:18,800 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343f2d70-303e-4e45-907c-48b7b4f3fac5/bin/uautomizer-ug76WZFUDN/data/acba5de8d/6501900ed1dc455a8de1e3b791336865/FLAGe59e15f11 [2022-11-20 12:39:18,823 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343f2d70-303e-4e45-907c-48b7b4f3fac5/bin/uautomizer-ug76WZFUDN/data/acba5de8d/6501900ed1dc455a8de1e3b791336865 [2022-11-20 12:39:18,826 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 12:39:18,828 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 12:39:18,830 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 12:39:18,830 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 12:39:18,842 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 12:39:18,843 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:39:18" (1/1) ... [2022-11-20 12:39:18,844 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@302aaccc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:39:18, skipping insertion in model container [2022-11-20 12:39:18,844 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:39:18" (1/1) ... [2022-11-20 12:39:18,853 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 12:39:18,928 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 12:39:19,489 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:39:19,511 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 12:39:19,581 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:39:19,653 INFO L208 MainTranslator]: Completed translation [2022-11-20 12:39:19,654 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:39:19 WrapperNode [2022-11-20 12:39:19,654 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 12:39:19,656 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 12:39:19,656 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 12:39:19,657 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 12:39:19,666 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:39:19" (1/1) ... [2022-11-20 12:39:19,693 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:39:19" (1/1) ... [2022-11-20 12:39:19,759 INFO L138 Inliner]: procedures = 189, calls = 71, calls flagged for inlining = 13, calls inlined = 13, statements flattened = 233 [2022-11-20 12:39:19,760 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 12:39:19,761 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 12:39:19,761 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 12:39:19,761 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 12:39:19,773 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:39:19" (1/1) ... [2022-11-20 12:39:19,773 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:39:19" (1/1) ... [2022-11-20 12:39:19,790 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:39:19" (1/1) ... [2022-11-20 12:39:19,801 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:39:19" (1/1) ... [2022-11-20 12:39:19,827 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:39:19" (1/1) ... [2022-11-20 12:39:19,832 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:39:19" (1/1) ... [2022-11-20 12:39:19,834 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:39:19" (1/1) ... [2022-11-20 12:39:19,836 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:39:19" (1/1) ... [2022-11-20 12:39:19,846 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 12:39:19,847 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 12:39:19,847 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 12:39:19,847 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 12:39:19,848 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:39:19" (1/1) ... [2022-11-20 12:39:19,871 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:39:19,888 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343f2d70-303e-4e45-907c-48b7b4f3fac5/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:39:19,909 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343f2d70-303e-4e45-907c-48b7b4f3fac5/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 12:39:19,943 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343f2d70-303e-4e45-907c-48b7b4f3fac5/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 12:39:19,960 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-20 12:39:19,960 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 12:39:19,961 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-20 12:39:19,961 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-20 12:39:19,961 INFO L130 BoogieDeclarations]: Found specification of procedure zalloc_or_die [2022-11-20 12:39:19,961 INFO L138 BoogieDeclarations]: Found implementation of procedure zalloc_or_die [2022-11-20 12:39:19,961 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 12:39:19,961 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-20 12:39:19,962 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-20 12:39:19,962 INFO L130 BoogieDeclarations]: Found specification of procedure l0_destroy [2022-11-20 12:39:19,962 INFO L138 BoogieDeclarations]: Found implementation of procedure l0_destroy [2022-11-20 12:39:19,962 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 12:39:19,962 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 12:39:20,124 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 12:39:20,127 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 12:39:21,331 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 12:39:21,341 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 12:39:21,345 INFO L300 CfgBuilder]: Removed 10 assume(true) statements. [2022-11-20 12:39:21,354 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:39:21 BoogieIcfgContainer [2022-11-20 12:39:21,354 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 12:39:21,357 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 12:39:21,357 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 12:39:21,362 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 12:39:21,362 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 12:39:18" (1/3) ... [2022-11-20 12:39:21,365 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3caa386 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:39:21, skipping insertion in model container [2022-11-20 12:39:21,365 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:39:19" (2/3) ... [2022-11-20 12:39:21,366 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3caa386 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:39:21, skipping insertion in model container [2022-11-20 12:39:21,366 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:39:21" (3/3) ... [2022-11-20 12:39:21,371 INFO L112 eAbstractionObserver]: Analyzing ICFG test-0235-2.i [2022-11-20 12:39:21,393 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 12:39:21,393 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 87 error locations. [2022-11-20 12:39:21,452 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 12:39:21,460 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;@35d3e3ec, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 12:39:21,460 INFO L358 AbstractCegarLoop]: Starting to check reachability of 87 error locations. [2022-11-20 12:39:21,471 INFO L276 IsEmpty]: Start isEmpty. Operand has 233 states, 131 states have (on average 1.9083969465648856) internal successors, (250), 218 states have internal predecessors, (250), 12 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-11-20 12:39:21,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-20 12:39:21,480 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:39:21,481 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-20 12:39:21,482 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr32REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 84 more)] === [2022-11-20 12:39:21,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:39:21,493 INFO L85 PathProgramCache]: Analyzing trace with hash 929958, now seen corresponding path program 1 times [2022-11-20 12:39:21,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:39:21,510 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1386376414] [2022-11-20 12:39:21,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:39:21,511 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 12:39:21,511 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343f2d70-303e-4e45-907c-48b7b4f3fac5/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:39:21,523 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343f2d70-303e-4e45-907c-48b7b4f3fac5/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 12:39:21,559 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343f2d70-303e-4e45-907c-48b7b4f3fac5/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 12:39:21,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:39:21,631 INFO L263 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-20 12:39:21,636 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:39:21,659 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 12:39:21,660 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:39:21,661 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:39:21,661 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1386376414] [2022-11-20 12:39:21,662 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1386376414] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:39:21,663 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:39:21,663 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 12:39:21,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436053895] [2022-11-20 12:39:21,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:39:21,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-20 12:39:21,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:39:21,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-20 12:39:21,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 12:39:21,731 INFO L87 Difference]: Start difference. First operand has 233 states, 131 states have (on average 1.9083969465648856) internal successors, (250), 218 states have internal predecessors, (250), 12 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) 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 12:39:21,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:39:21,785 INFO L93 Difference]: Finished difference Result 233 states and 263 transitions. [2022-11-20 12:39:21,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-20 12:39:21,789 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 12:39:21,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:39:21,811 INFO L225 Difference]: With dead ends: 233 [2022-11-20 12:39:21,812 INFO L226 Difference]: Without dead ends: 231 [2022-11-20 12:39:21,814 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 12:39:21,821 INFO L413 NwaCegarLoop]: 263 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, 263 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 12:39:21,824 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 263 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 12:39:21,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2022-11-20 12:39:21,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 231. [2022-11-20 12:39:21,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 130 states have (on average 1.823076923076923) internal successors, (237), 216 states have internal predecessors, (237), 12 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-11-20 12:39:21,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 261 transitions. [2022-11-20 12:39:21,919 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 261 transitions. Word has length 4 [2022-11-20 12:39:21,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:39:21,920 INFO L495 AbstractCegarLoop]: Abstraction has 231 states and 261 transitions. [2022-11-20 12:39:21,920 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 12:39:21,920 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 261 transitions. [2022-11-20 12:39:21,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-20 12:39:21,921 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:39:21,922 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-20 12:39:21,950 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343f2d70-303e-4e45-907c-48b7b4f3fac5/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 12:39:22,150 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343f2d70-303e-4e45-907c-48b7b4f3fac5/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 12:39:22,150 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting zalloc_or_dieErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 84 more)] === [2022-11-20 12:39:22,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:39:22,152 INFO L85 PathProgramCache]: Analyzing trace with hash 889932981, now seen corresponding path program 1 times [2022-11-20 12:39:22,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:39:22,154 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [977696862] [2022-11-20 12:39:22,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:39:22,154 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 12:39:22,155 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343f2d70-303e-4e45-907c-48b7b4f3fac5/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:39:22,188 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343f2d70-303e-4e45-907c-48b7b4f3fac5/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 12:39:22,198 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343f2d70-303e-4e45-907c-48b7b4f3fac5/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 12:39:22,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:39:22,338 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 12:39:22,340 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:39:22,460 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 12:39:22,473 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 12:39:22,473 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:39:22,473 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:39:22,474 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [977696862] [2022-11-20 12:39:22,474 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [977696862] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:39:22,474 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:39:22,475 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 12:39:22,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613161849] [2022-11-20 12:39:22,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:39:22,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:39:22,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:39:22,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:39:22,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:39:22,478 INFO L87 Difference]: Start difference. First operand 231 states and 261 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 12:39:22,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:39:22,968 INFO L93 Difference]: Finished difference Result 230 states and 260 transitions. [2022-11-20 12:39:22,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:39:22,970 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 12:39:22,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:39:22,972 INFO L225 Difference]: With dead ends: 230 [2022-11-20 12:39:22,972 INFO L226 Difference]: Without dead ends: 230 [2022-11-20 12:39:22,973 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 12:39:22,974 INFO L413 NwaCegarLoop]: 255 mSDtfsCounter, 9 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 418 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-20 12:39:22,975 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 418 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-20 12:39:22,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2022-11-20 12:39:22,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 230. [2022-11-20 12:39:22,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230 states, 130 states have (on average 1.8153846153846154) internal successors, (236), 215 states have internal predecessors, (236), 12 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-11-20 12:39:23,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 260 transitions. [2022-11-20 12:39:23,012 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 260 transitions. Word has length 6 [2022-11-20 12:39:23,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:39:23,013 INFO L495 AbstractCegarLoop]: Abstraction has 230 states and 260 transitions. [2022-11-20 12:39:23,013 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 12:39:23,014 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 260 transitions. [2022-11-20 12:39:23,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-20 12:39:23,015 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:39:23,015 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:39:23,029 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343f2d70-303e-4e45-907c-48b7b4f3fac5/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 12:39:23,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343f2d70-303e-4e45-907c-48b7b4f3fac5/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 12:39:23,227 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 84 more)] === [2022-11-20 12:39:23,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:39:23,228 INFO L85 PathProgramCache]: Analyzing trace with hash 1818119056, now seen corresponding path program 1 times [2022-11-20 12:39:23,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:39:23,228 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1597904323] [2022-11-20 12:39:23,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:39:23,229 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 12:39:23,229 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343f2d70-303e-4e45-907c-48b7b4f3fac5/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:39:23,232 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343f2d70-303e-4e45-907c-48b7b4f3fac5/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 12:39:23,237 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343f2d70-303e-4e45-907c-48b7b4f3fac5/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 12:39:23,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:39:23,359 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-20 12:39:23,363 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:39:23,432 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 12:39:23,474 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 12:39:23,475 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:39:23,475 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:39:23,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1597904323] [2022-11-20 12:39:23,482 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1597904323] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:39:23,482 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:39:23,482 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:39:23,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787242126] [2022-11-20 12:39:23,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:39:23,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:39:23,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:39:23,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:39:23,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:39:23,486 INFO L87 Difference]: Start difference. First operand 230 states and 260 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 12:39:24,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:39:24,038 INFO L93 Difference]: Finished difference Result 239 states and 269 transitions. [2022-11-20 12:39:24,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 12:39:24,039 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 12:39:24,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:39:24,041 INFO L225 Difference]: With dead ends: 239 [2022-11-20 12:39:24,041 INFO L226 Difference]: Without dead ends: 239 [2022-11-20 12:39:24,041 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 12:39:24,043 INFO L413 NwaCegarLoop]: 249 mSDtfsCounter, 16 mSDsluCounter, 429 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 678 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-20 12:39:24,043 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 678 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-20 12:39:24,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2022-11-20 12:39:24,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 239. [2022-11-20 12:39:24,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 138 states have (on average 1.7753623188405796) internal successors, (245), 223 states have internal predecessors, (245), 12 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-11-20 12:39:24,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 269 transitions. [2022-11-20 12:39:24,061 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 269 transitions. Word has length 7 [2022-11-20 12:39:24,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:39:24,062 INFO L495 AbstractCegarLoop]: Abstraction has 239 states and 269 transitions. [2022-11-20 12:39:24,062 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 12:39:24,063 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 269 transitions. [2022-11-20 12:39:24,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-20 12:39:24,065 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:39:24,065 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 12:39:24,085 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343f2d70-303e-4e45-907c-48b7b4f3fac5/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 12:39:24,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343f2d70-303e-4e45-907c-48b7b4f3fac5/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 12:39:24,279 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 84 more)] === [2022-11-20 12:39:24,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:39:24,280 INFO L85 PathProgramCache]: Analyzing trace with hash 253014343, now seen corresponding path program 1 times [2022-11-20 12:39:24,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:39:24,281 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [872643641] [2022-11-20 12:39:24,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:39:24,282 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 12:39:24,282 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343f2d70-303e-4e45-907c-48b7b4f3fac5/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:39:24,283 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343f2d70-303e-4e45-907c-48b7b4f3fac5/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 12:39:24,284 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343f2d70-303e-4e45-907c-48b7b4f3fac5/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 12:39:24,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:39:24,627 INFO L263 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-20 12:39:24,631 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:39:24,720 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 12:39:24,723 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:39:24,723 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:39:24,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [872643641] [2022-11-20 12:39:24,728 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [872643641] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:39:24,731 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:39:24,731 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 12:39:24,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113070740] [2022-11-20 12:39:24,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:39:24,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 12:39:24,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:39:24,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 12:39:24,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:39:24,734 INFO L87 Difference]: Start difference. First operand 239 states and 269 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 12:39:24,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:39:24,862 INFO L93 Difference]: Finished difference Result 251 states and 281 transitions. [2022-11-20 12:39:24,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:39:24,864 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 12:39:24,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:39:24,865 INFO L225 Difference]: With dead ends: 251 [2022-11-20 12:39:24,866 INFO L226 Difference]: Without dead ends: 241 [2022-11-20 12:39:24,866 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 12:39:24,867 INFO L413 NwaCegarLoop]: 250 mSDtfsCounter, 19 mSDsluCounter, 486 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 736 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 12:39:24,868 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 736 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 12:39:24,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2022-11-20 12:39:24,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 241. [2022-11-20 12:39:24,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 241 states, 140 states have (on average 1.7642857142857142) internal successors, (247), 225 states have internal predecessors, (247), 12 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-11-20 12:39:24,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 271 transitions. [2022-11-20 12:39:24,882 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 271 transitions. Word has length 66 [2022-11-20 12:39:24,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:39:24,883 INFO L495 AbstractCegarLoop]: Abstraction has 241 states and 271 transitions. [2022-11-20 12:39:24,883 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 12:39:24,884 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 271 transitions. [2022-11-20 12:39:24,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-11-20 12:39:24,885 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:39:24,886 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 12:39:24,915 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343f2d70-303e-4e45-907c-48b7b4f3fac5/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 12:39:25,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343f2d70-303e-4e45-907c-48b7b4f3fac5/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 12:39:25,103 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 84 more)] === [2022-11-20 12:39:25,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:39:25,104 INFO L85 PathProgramCache]: Analyzing trace with hash 851001466, now seen corresponding path program 1 times [2022-11-20 12:39:25,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:39:25,105 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2029566367] [2022-11-20 12:39:25,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:39:25,105 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 12:39:25,105 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343f2d70-303e-4e45-907c-48b7b4f3fac5/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:39:25,108 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343f2d70-303e-4e45-907c-48b7b4f3fac5/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 12:39:25,113 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343f2d70-303e-4e45-907c-48b7b4f3fac5/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 12:39:25,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:39:25,466 INFO L263 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-20 12:39:25,471 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:39:25,567 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 12:39:25,567 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:39:25,965 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 12:39:25,965 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:39:25,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2029566367] [2022-11-20 12:39:25,965 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2029566367] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:39:25,965 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:39:25,965 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2022-11-20 12:39:25,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392633861] [2022-11-20 12:39:25,966 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:39:25,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 12:39:25,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:39:25,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 12:39:25,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-11-20 12:39:25,968 INFO L87 Difference]: Start difference. First operand 241 states and 271 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 12:39:26,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:39:26,448 INFO L93 Difference]: Finished difference Result 260 states and 291 transitions. [2022-11-20 12:39:26,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-20 12:39:26,449 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 12:39:26,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:39:26,452 INFO L225 Difference]: With dead ends: 260 [2022-11-20 12:39:26,452 INFO L226 Difference]: Without dead ends: 245 [2022-11-20 12:39:26,453 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 12:39:26,455 INFO L413 NwaCegarLoop]: 251 mSDtfsCounter, 45 mSDsluCounter, 1455 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 1706 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 12:39:26,456 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 1706 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 12:39:26,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2022-11-20 12:39:26,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 245. [2022-11-20 12:39:26,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 245 states, 144 states have (on average 1.7430555555555556) internal successors, (251), 229 states have internal predecessors, (251), 12 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-11-20 12:39:26,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 275 transitions. [2022-11-20 12:39:26,476 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 275 transitions. Word has length 71 [2022-11-20 12:39:26,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:39:26,476 INFO L495 AbstractCegarLoop]: Abstraction has 245 states and 275 transitions. [2022-11-20 12:39:26,476 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 12:39:26,477 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 275 transitions. [2022-11-20 12:39:26,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-11-20 12:39:26,482 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:39:26,482 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 12:39:26,504 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343f2d70-303e-4e45-907c-48b7b4f3fac5/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 12:39:26,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343f2d70-303e-4e45-907c-48b7b4f3fac5/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 12:39:26,696 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 84 more)] === [2022-11-20 12:39:26,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:39:26,696 INFO L85 PathProgramCache]: Analyzing trace with hash 678119687, now seen corresponding path program 2 times [2022-11-20 12:39:26,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:39:26,698 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [626390788] [2022-11-20 12:39:26,698 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 12:39:26,698 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 12:39:26,698 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343f2d70-303e-4e45-907c-48b7b4f3fac5/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:39:26,699 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343f2d70-303e-4e45-907c-48b7b4f3fac5/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 12:39:26,705 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343f2d70-303e-4e45-907c-48b7b4f3fac5/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 12:39:26,900 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 12:39:26,900 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:39:26,904 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-20 12:39:26,911 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:39:26,980 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 12:39:27,303 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 12:39:27,303 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:39:27,303 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:39:27,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [626390788] [2022-11-20 12:39:27,304 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [626390788] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:39:27,304 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:39:27,304 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 12:39:27,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087358537] [2022-11-20 12:39:27,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:39:27,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:39:27,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:39:27,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:39:27,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:39:27,306 INFO L87 Difference]: Start difference. First operand 245 states and 275 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 12:39:27,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:39:27,316 INFO L93 Difference]: Finished difference Result 244 states and 274 transitions. [2022-11-20 12:39:27,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:39:27,317 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 12:39:27,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:39:27,319 INFO L225 Difference]: With dead ends: 244 [2022-11-20 12:39:27,319 INFO L226 Difference]: Without dead ends: 244 [2022-11-20 12:39:27,320 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 12:39:27,321 INFO L413 NwaCegarLoop]: 257 mSDtfsCounter, 0 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 443 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 72 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 12:39:27,321 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 443 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 72 Unchecked, 0.0s Time] [2022-11-20 12:39:27,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2022-11-20 12:39:27,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 244. [2022-11-20 12:39:27,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 144 states have (on average 1.7361111111111112) internal successors, (250), 228 states have internal predecessors, (250), 12 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-11-20 12:39:27,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 274 transitions. [2022-11-20 12:39:27,332 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 274 transitions. Word has length 86 [2022-11-20 12:39:27,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:39:27,333 INFO L495 AbstractCegarLoop]: Abstraction has 244 states and 274 transitions. [2022-11-20 12:39:27,333 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 12:39:27,333 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 274 transitions. [2022-11-20 12:39:27,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-11-20 12:39:27,335 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:39:27,335 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 12:39:27,359 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343f2d70-303e-4e45-907c-48b7b4f3fac5/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 12:39:27,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343f2d70-303e-4e45-907c-48b7b4f3fac5/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 12:39:27,560 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 84 more)] === [2022-11-20 12:39:27,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:39:27,560 INFO L85 PathProgramCache]: Analyzing trace with hash -1975385078, now seen corresponding path program 1 times [2022-11-20 12:39:27,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:39:27,562 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1351535778] [2022-11-20 12:39:27,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:39:27,562 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 12:39:27,562 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343f2d70-303e-4e45-907c-48b7b4f3fac5/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:39:27,564 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343f2d70-303e-4e45-907c-48b7b4f3fac5/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 12:39:27,588 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343f2d70-303e-4e45-907c-48b7b4f3fac5/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 12:39:28,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:39:28,028 INFO L263 TraceCheckSpWp]: Trace formula consists of 575 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-20 12:39:28,032 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:39:28,220 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 12:39:28,221 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:39:28,909 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 12:39:28,910 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:39:28,910 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1351535778] [2022-11-20 12:39:28,910 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1351535778] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:39:28,910 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:39:28,911 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2022-11-20 12:39:28,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459244238] [2022-11-20 12:39:28,911 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:39:28,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-20 12:39:28,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:39:28,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-20 12:39:28,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=163, Unknown=0, NotChecked=0, Total=240 [2022-11-20 12:39:28,923 INFO L87 Difference]: Start difference. First operand 244 states and 274 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 12:39:30,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:39:30,084 INFO L93 Difference]: Finished difference Result 276 states and 308 transitions. [2022-11-20 12:39:30,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-20 12:39:30,085 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 12:39:30,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:39:30,087 INFO L225 Difference]: With dead ends: 276 [2022-11-20 12:39:30,090 INFO L226 Difference]: Without dead ends: 251 [2022-11-20 12:39:30,091 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=252, Invalid=504, Unknown=0, NotChecked=0, Total=756 [2022-11-20 12:39:30,092 INFO L413 NwaCegarLoop]: 259 mSDtfsCounter, 79 mSDsluCounter, 1992 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 2251 SdHoareTripleChecker+Invalid, 243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-20 12:39:30,093 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 2251 Invalid, 243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 209 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-20 12:39:30,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2022-11-20 12:39:30,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 251. [2022-11-20 12:39:30,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251 states, 151 states have (on average 1.7019867549668874) internal successors, (257), 235 states have internal predecessors, (257), 12 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-11-20 12:39:30,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 281 transitions. [2022-11-20 12:39:30,104 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 281 transitions. Word has length 95 [2022-11-20 12:39:30,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:39:30,105 INFO L495 AbstractCegarLoop]: Abstraction has 251 states and 281 transitions. [2022-11-20 12:39:30,105 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 12:39:30,105 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 281 transitions. [2022-11-20 12:39:30,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-11-20 12:39:30,107 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:39:30,107 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 12:39:30,134 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343f2d70-303e-4e45-907c-48b7b4f3fac5/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)] Ended with exit code 0 [2022-11-20 12:39:30,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343f2d70-303e-4e45-907c-48b7b4f3fac5/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 12:39:30,329 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 84 more)] === [2022-11-20 12:39:30,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:39:30,329 INFO L85 PathProgramCache]: Analyzing trace with hash -2117878513, now seen corresponding path program 2 times [2022-11-20 12:39:30,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:39:30,330 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1313573142] [2022-11-20 12:39:30,330 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 12:39:30,331 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 12:39:30,331 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343f2d70-303e-4e45-907c-48b7b4f3fac5/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:39:30,333 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343f2d70-303e-4e45-907c-48b7b4f3fac5/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 12:39:30,379 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343f2d70-303e-4e45-907c-48b7b4f3fac5/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 12:39:31,611 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 12:39:31,611 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:39:31,653 INFO L263 TraceCheckSpWp]: Trace formula consists of 828 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-20 12:39:31,659 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:39:31,880 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 12:39:31,880 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:39:32,696 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 12:39:32,697 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:39:32,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1313573142] [2022-11-20 12:39:32,697 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1313573142] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:39:32,697 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:39:32,698 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2022-11-20 12:39:32,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919866809] [2022-11-20 12:39:32,700 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:39:32,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-20 12:39:32,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:39:32,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-20 12:39:32,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=209, Unknown=0, NotChecked=0, Total=306 [2022-11-20 12:39:32,703 INFO L87 Difference]: Start difference. First operand 251 states and 281 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 12:39:34,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:39:34,220 INFO L93 Difference]: Finished difference Result 268 states and 303 transitions. [2022-11-20 12:39:34,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-20 12:39:34,221 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 12:39:34,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:39:34,223 INFO L225 Difference]: With dead ends: 268 [2022-11-20 12:39:34,223 INFO L226 Difference]: Without dead ends: 258 [2022-11-20 12:39:34,224 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 218 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=345, Invalid=647, Unknown=0, NotChecked=0, Total=992 [2022-11-20 12:39:34,225 INFO L413 NwaCegarLoop]: 253 mSDtfsCounter, 163 mSDsluCounter, 1751 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 2004 SdHoareTripleChecker+Invalid, 234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-20 12:39:34,226 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [163 Valid, 2004 Invalid, 234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-20 12:39:34,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2022-11-20 12:39:34,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 258. [2022-11-20 12:39:34,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 258 states, 158 states have (on average 1.6708860759493671) internal successors, (264), 242 states have internal predecessors, (264), 12 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-11-20 12:39:34,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 288 transitions. [2022-11-20 12:39:34,236 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 288 transitions. Word has length 118 [2022-11-20 12:39:34,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:39:34,237 INFO L495 AbstractCegarLoop]: Abstraction has 258 states and 288 transitions. [2022-11-20 12:39:34,237 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 12:39:34,237 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 288 transitions. [2022-11-20 12:39:34,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-11-20 12:39:34,239 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:39:34,239 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 12:39:34,273 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343f2d70-303e-4e45-907c-48b7b4f3fac5/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 12:39:34,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343f2d70-303e-4e45-907c-48b7b4f3fac5/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 12:39:34,453 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 84 more)] === [2022-11-20 12:39:34,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:39:34,454 INFO L85 PathProgramCache]: Analyzing trace with hash 88396650, now seen corresponding path program 3 times [2022-11-20 12:39:34,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:39:34,455 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [72950624] [2022-11-20 12:39:34,455 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 12:39:34,455 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 12:39:34,455 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343f2d70-303e-4e45-907c-48b7b4f3fac5/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:39:34,456 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343f2d70-303e-4e45-907c-48b7b4f3fac5/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 12:39:34,458 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343f2d70-303e-4e45-907c-48b7b4f3fac5/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 12:39:34,866 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-20 12:39:34,866 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:39:34,876 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-20 12:39:34,880 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:39:35,048 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 12:39:35,194 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-20 12:39:35,194 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 12:39:35,245 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 12:39:35,245 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:39:35,825 INFO L321 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2022-11-20 12:39:35,826 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 12:39:35,875 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 12:39:35,875 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:39:35,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [72950624] [2022-11-20 12:39:35,875 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [72950624] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:39:35,876 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:39:35,876 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 11 [2022-11-20 12:39:35,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737429550] [2022-11-20 12:39:35,876 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:39:35,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 12:39:35,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:39:35,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 12:39:35,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=91, Unknown=1, NotChecked=18, Total=132 [2022-11-20 12:39:35,878 INFO L87 Difference]: Start difference. First operand 258 states and 288 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 12:39:37,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:39:37,689 INFO L93 Difference]: Finished difference Result 265 states and 299 transitions. [2022-11-20 12:39:37,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-20 12:39:37,690 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 12:39:37,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:39:37,693 INFO L225 Difference]: With dead ends: 265 [2022-11-20 12:39:37,693 INFO L226 Difference]: Without dead ends: 265 [2022-11-20 12:39:37,694 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 12:39:37,695 INFO L413 NwaCegarLoop]: 230 mSDtfsCounter, 91 mSDsluCounter, 1329 mSDsCounter, 0 mSdLazyCounter, 663 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 1559 SdHoareTripleChecker+Invalid, 1057 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 663 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 392 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-20 12:39:37,695 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 1559 Invalid, 1057 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 663 Invalid, 0 Unknown, 392 Unchecked, 1.4s Time] [2022-11-20 12:39:37,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2022-11-20 12:39:37,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 256. [2022-11-20 12:39:37,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256 states, 158 states have (on average 1.6582278481012658) internal successors, (262), 240 states have internal predecessors, (262), 12 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-11-20 12:39:37,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 286 transitions. [2022-11-20 12:39:37,710 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 286 transitions. Word has length 125 [2022-11-20 12:39:37,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:39:37,712 INFO L495 AbstractCegarLoop]: Abstraction has 256 states and 286 transitions. [2022-11-20 12:39:37,713 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 12:39:37,713 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 286 transitions. [2022-11-20 12:39:37,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-11-20 12:39:37,718 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:39:37,718 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 12:39:37,745 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343f2d70-303e-4e45-907c-48b7b4f3fac5/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 12:39:37,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343f2d70-303e-4e45-907c-48b7b4f3fac5/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 12:39:37,945 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 84 more)] === [2022-11-20 12:39:37,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:39:37,946 INFO L85 PathProgramCache]: Analyzing trace with hash 88396651, now seen corresponding path program 1 times [2022-11-20 12:39:37,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:39:37,946 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1593949139] [2022-11-20 12:39:37,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:39:37,947 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 12:39:37,947 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343f2d70-303e-4e45-907c-48b7b4f3fac5/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:39:37,948 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343f2d70-303e-4e45-907c-48b7b4f3fac5/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 12:39:37,993 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343f2d70-303e-4e45-907c-48b7b4f3fac5/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 12:39:39,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:39:39,199 INFO L263 TraceCheckSpWp]: Trace formula consists of 905 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-20 12:39:39,204 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:39:39,596 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 12:39:39,596 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:39:41,152 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 12:39:41,153 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:39:41,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1593949139] [2022-11-20 12:39:41,153 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1593949139] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:39:41,154 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:39:41,154 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 32 [2022-11-20 12:39:41,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326767378] [2022-11-20 12:39:41,154 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:39:41,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-20 12:39:41,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:39:41,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-20 12:39:41,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=286, Invalid=706, Unknown=0, NotChecked=0, Total=992 [2022-11-20 12:39:41,157 INFO L87 Difference]: Start difference. First operand 256 states and 286 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 12:39:47,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:39:47,283 INFO L93 Difference]: Finished difference Result 304 states and 365 transitions. [2022-11-20 12:39:47,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-11-20 12:39:47,284 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 12:39:47,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:39:47,286 INFO L225 Difference]: With dead ends: 304 [2022-11-20 12:39:47,286 INFO L226 Difference]: Without dead ends: 294 [2022-11-20 12:39:47,288 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 218 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 778 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=1195, Invalid=2345, Unknown=0, NotChecked=0, Total=3540 [2022-11-20 12:39:47,289 INFO L413 NwaCegarLoop]: 263 mSDtfsCounter, 429 mSDsluCounter, 4334 mSDsCounter, 0 mSdLazyCounter, 875 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 429 SdHoareTripleChecker+Valid, 4597 SdHoareTripleChecker+Invalid, 999 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 875 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-11-20 12:39:47,290 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [429 Valid, 4597 Invalid, 999 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [124 Valid, 875 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-11-20 12:39:47,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2022-11-20 12:39:47,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 274. [2022-11-20 12:39:47,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 274 states, 176 states have (on average 1.6079545454545454) internal successors, (283), 258 states have internal predecessors, (283), 12 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-11-20 12:39:47,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 307 transitions. [2022-11-20 12:39:47,304 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 307 transitions. Word has length 125 [2022-11-20 12:39:47,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:39:47,305 INFO L495 AbstractCegarLoop]: Abstraction has 274 states and 307 transitions. [2022-11-20 12:39:47,305 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 12:39:47,305 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 307 transitions. [2022-11-20 12:39:47,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-11-20 12:39:47,307 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:39:47,307 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 12:39:47,335 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343f2d70-303e-4e45-907c-48b7b4f3fac5/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 12:39:47,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343f2d70-303e-4e45-907c-48b7b4f3fac5/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 12:39:47,525 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 84 more)] === [2022-11-20 12:39:47,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:39:47,525 INFO L85 PathProgramCache]: Analyzing trace with hash -1620358197, now seen corresponding path program 2 times [2022-11-20 12:39:47,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:39:47,526 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1022358077] [2022-11-20 12:39:47,526 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 12:39:47,527 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 12:39:47,527 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343f2d70-303e-4e45-907c-48b7b4f3fac5/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:39:47,529 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343f2d70-303e-4e45-907c-48b7b4f3fac5/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 12:39:47,573 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343f2d70-303e-4e45-907c-48b7b4f3fac5/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 12:39:49,101 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 12:39:49,101 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:39:49,163 INFO L263 TraceCheckSpWp]: Trace formula consists of 1059 conjuncts, 35 conjunts are in the unsatisfiable core [2022-11-20 12:39:49,168 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:39:50,351 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 12:39:50,351 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:39:54,928 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 12:39:54,928 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:39:54,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1022358077] [2022-11-20 12:39:54,928 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1022358077] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:39:54,929 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:39:54,929 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 60 [2022-11-20 12:39:54,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322442478] [2022-11-20 12:39:54,929 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:39:54,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2022-11-20 12:39:54,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:39:54,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2022-11-20 12:39:54,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=958, Invalid=2582, Unknown=0, NotChecked=0, Total=3540 [2022-11-20 12:39:54,934 INFO L87 Difference]: Start difference. First operand 274 states and 307 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 12:40:18,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:40:18,858 INFO L93 Difference]: Finished difference Result 332 states and 407 transitions. [2022-11-20 12:40:18,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2022-11-20 12:40:18,859 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 12:40:18,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:40:18,861 INFO L225 Difference]: With dead ends: 332 [2022-11-20 12:40:18,862 INFO L226 Difference]: Without dead ends: 322 [2022-11-20 12:40:18,865 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 319 GetRequests, 218 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2140 ImplicationChecksByTransitivity, 20.1s TimeCoverageRelationStatistics Valid=3526, Invalid=6980, Unknown=0, NotChecked=0, Total=10506 [2022-11-20 12:40:18,866 INFO L413 NwaCegarLoop]: 267 mSDtfsCounter, 1122 mSDsluCounter, 8106 mSDsCounter, 0 mSdLazyCounter, 1988 mSolverCounterSat, 511 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1122 SdHoareTripleChecker+Valid, 8373 SdHoareTripleChecker+Invalid, 2499 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 511 IncrementalHoareTripleChecker+Valid, 1988 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.0s IncrementalHoareTripleChecker+Time [2022-11-20 12:40:18,866 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1122 Valid, 8373 Invalid, 2499 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [511 Valid, 1988 Invalid, 0 Unknown, 0 Unchecked, 8.0s Time] [2022-11-20 12:40:18,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2022-11-20 12:40:18,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 302. [2022-11-20 12:40:18,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 302 states, 204 states have (on average 1.5245098039215685) internal successors, (311), 286 states have internal predecessors, (311), 12 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-11-20 12:40:18,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 335 transitions. [2022-11-20 12:40:18,880 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 335 transitions. Word has length 139 [2022-11-20 12:40:18,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:40:18,880 INFO L495 AbstractCegarLoop]: Abstraction has 302 states and 335 transitions. [2022-11-20 12:40:18,881 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 12:40:18,881 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 335 transitions. [2022-11-20 12:40:18,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-11-20 12:40:18,883 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:40:18,883 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 12:40:18,916 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343f2d70-303e-4e45-907c-48b7b4f3fac5/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 12:40:19,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343f2d70-303e-4e45-907c-48b7b4f3fac5/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 12:40:19,099 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 84 more)] === [2022-11-20 12:40:19,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:40:19,100 INFO L85 PathProgramCache]: Analyzing trace with hash -2124430197, now seen corresponding path program 3 times [2022-11-20 12:40:19,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:40:19,100 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [971525991] [2022-11-20 12:40:19,101 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 12:40:19,101 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 12:40:19,101 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343f2d70-303e-4e45-907c-48b7b4f3fac5/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:40:19,102 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343f2d70-303e-4e45-907c-48b7b4f3fac5/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 12:40:19,103 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343f2d70-303e-4e45-907c-48b7b4f3fac5/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 12:40:19,706 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-20 12:40:19,706 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:40:19,723 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 28 conjunts are in the unsatisfiable core [2022-11-20 12:40:19,729 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:40:19,743 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 12:40:20,166 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 12:40:20,782 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:40:20,784 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 12:40:20,801 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-20 12:40:20,801 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 12:40:20,841 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 12:40:20,841 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:40:23,224 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:40:23,224 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [971525991] [2022-11-20 12:40:23,224 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [971525991] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:40:23,224 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1002928750] [2022-11-20 12:40:23,224 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 12:40:23,224 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-20 12:40:23,225 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343f2d70-303e-4e45-907c-48b7b4f3fac5/bin/uautomizer-ug76WZFUDN/cvc4 [2022-11-20 12:40:23,229 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343f2d70-303e-4e45-907c-48b7b4f3fac5/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-20 12:40:23,230 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343f2d70-303e-4e45-907c-48b7b4f3fac5/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt (14)] Waiting until timeout for monitored process [2022-11-20 12:40:24,139 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-20 12:40:24,139 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:40:24,166 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 35 conjunts are in the unsatisfiable core [2022-11-20 12:40:24,180 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:40:24,212 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 12:40:24,486 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 12:40:25,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:40:25,085 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 12:40:25,098 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-20 12:40:25,099 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 12:40:25,111 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 12:40:25,111 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:40:25,375 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1002928750] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:40:25,375 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:40:25,376 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12] total 13 [2022-11-20 12:40:25,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665000640] [2022-11-20 12:40:25,376 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:40:25,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-20 12:40:25,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:40:25,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-20 12:40:25,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=153, Unknown=2, NotChecked=50, Total=240 [2022-11-20 12:40:25,377 INFO L87 Difference]: Start difference. First operand 302 states and 335 transitions. Second operand has 14 states, 12 states have (on average 4.25) internal successors, (51), 11 states have internal predecessors, (51), 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 12:40:29,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:40:29,648 INFO L93 Difference]: Finished difference Result 442 states and 508 transitions. [2022-11-20 12:40:29,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 12:40:29,649 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 4.25) internal successors, (51), 11 states have internal predecessors, (51), 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 12:40:29,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:40:29,653 INFO L225 Difference]: With dead ends: 442 [2022-11-20 12:40:29,653 INFO L226 Difference]: Without dead ends: 442 [2022-11-20 12:40:29,654 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 342 GetRequests, 322 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=53, Invalid=295, Unknown=2, NotChecked=70, Total=420 [2022-11-20 12:40:29,655 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 233 mSDsluCounter, 363 mSDsCounter, 0 mSdLazyCounter, 1986 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 243 SdHoareTripleChecker+Valid, 429 SdHoareTripleChecker+Invalid, 2842 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 1986 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 824 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-11-20 12:40:29,655 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [243 Valid, 429 Invalid, 2842 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 1986 Invalid, 0 Unknown, 824 Unchecked, 3.7s Time] [2022-11-20 12:40:29,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 442 states. [2022-11-20 12:40:29,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 442 to 300. [2022-11-20 12:40:29,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 300 states, 204 states have (on average 1.5147058823529411) internal successors, (309), 284 states have internal predecessors, (309), 12 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-11-20 12:40:29,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 333 transitions. [2022-11-20 12:40:29,670 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 333 transitions. Word has length 167 [2022-11-20 12:40:29,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:40:29,671 INFO L495 AbstractCegarLoop]: Abstraction has 300 states and 333 transitions. [2022-11-20 12:40:29,671 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 4.25) internal successors, (51), 11 states have internal predecessors, (51), 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 12:40:29,672 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 333 transitions. [2022-11-20 12:40:29,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2022-11-20 12:40:29,674 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:40:29,674 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 12:40:29,687 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343f2d70-303e-4e45-907c-48b7b4f3fac5/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt (14)] Forceful destruction successful, exit code 0 [2022-11-20 12:40:29,893 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343f2d70-303e-4e45-907c-48b7b4f3fac5/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 12:40:30,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343f2d70-303e-4e45-907c-48b7b4f3fac5/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343f2d70-303e-4e45-907c-48b7b4f3fac5/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 12:40:30,082 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 84 more)] === [2022-11-20 12:40:30,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:40:30,082 INFO L85 PathProgramCache]: Analyzing trace with hash -1467954453, now seen corresponding path program 1 times [2022-11-20 12:40:30,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:40:30,083 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [534740015] [2022-11-20 12:40:30,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:40:30,084 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 12:40:30,084 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343f2d70-303e-4e45-907c-48b7b4f3fac5/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:40:30,086 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343f2d70-303e-4e45-907c-48b7b4f3fac5/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 12:40:30,088 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343f2d70-303e-4e45-907c-48b7b4f3fac5/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 12:40:31,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:40:31,912 INFO L263 TraceCheckSpWp]: Trace formula consists of 1381 conjuncts, 63 conjunts are in the unsatisfiable core [2022-11-20 12:40:31,916 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:40:35,811 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 12:40:35,811 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:40:50,187 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 12:40:50,187 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:40:50,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [534740015] [2022-11-20 12:40:50,188 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [534740015] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:40:50,188 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:40:50,188 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [59, 59] total 116 [2022-11-20 12:40:50,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963736921] [2022-11-20 12:40:50,189 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:40:50,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 116 states [2022-11-20 12:40:50,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:40:50,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 116 interpolants. [2022-11-20 12:40:50,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3478, Invalid=9862, Unknown=0, NotChecked=0, Total=13340 [2022-11-20 12:40:50,196 INFO L87 Difference]: Start difference. First operand 300 states and 333 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 12:43:02,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:43:02,873 INFO L93 Difference]: Finished difference Result 386 states and 489 transitions. [2022-11-20 12:43:02,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 130 states. [2022-11-20 12:43:02,874 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 12:43:02,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:43:02,875 INFO L225 Difference]: With dead ends: 386 [2022-11-20 12:43:02,876 INFO L226 Difference]: Without dead ends: 376 [2022-11-20 12:43:02,882 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 407 GetRequests, 222 SyntacticMatches, 0 SemanticMatches, 185 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6550 ImplicationChecksByTransitivity, 120.1s TimeCoverageRelationStatistics Valid=11646, Invalid=23136, Unknown=0, NotChecked=0, Total=34782 [2022-11-20 12:43:02,883 INFO L413 NwaCegarLoop]: 265 mSDtfsCounter, 2730 mSDsluCounter, 15202 mSDsCounter, 0 mSdLazyCounter, 5417 mSolverCounterSat, 1786 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2730 SdHoareTripleChecker+Valid, 15467 SdHoareTripleChecker+Invalid, 7203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1786 IncrementalHoareTripleChecker+Valid, 5417 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27.1s IncrementalHoareTripleChecker+Time [2022-11-20 12:43:02,884 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2730 Valid, 15467 Invalid, 7203 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1786 Valid, 5417 Invalid, 0 Unknown, 0 Unchecked, 27.1s Time] [2022-11-20 12:43:02,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2022-11-20 12:43:02,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 356. [2022-11-20 12:43:02,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 356 states, 260 states have (on average 1.4038461538461537) internal successors, (365), 340 states have internal predecessors, (365), 12 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-11-20 12:43:02,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 389 transitions. [2022-11-20 12:43:02,898 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 389 transitions. Word has length 169 [2022-11-20 12:43:02,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:43:02,899 INFO L495 AbstractCegarLoop]: Abstraction has 356 states and 389 transitions. [2022-11-20 12:43:02,900 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 12:43:02,900 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 389 transitions. [2022-11-20 12:43:02,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2022-11-20 12:43:02,903 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:43:02,904 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 12:43:02,933 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343f2d70-303e-4e45-907c-48b7b4f3fac5/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 12:43:03,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343f2d70-303e-4e45-907c-48b7b4f3fac5/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 12:43:03,128 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 84 more)] === [2022-11-20 12:43:03,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:43:03,128 INFO L85 PathProgramCache]: Analyzing trace with hash -47088533, now seen corresponding path program 2 times [2022-11-20 12:43:03,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:43:03,130 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [353929234] [2022-11-20 12:43:03,130 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 12:43:03,130 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 12:43:03,131 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343f2d70-303e-4e45-907c-48b7b4f3fac5/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:43:03,132 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343f2d70-303e-4e45-907c-48b7b4f3fac5/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 12:43:03,133 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343f2d70-303e-4e45-907c-48b7b4f3fac5/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 12:43:05,734 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 12:43:05,735 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:43:05,829 INFO L263 TraceCheckSpWp]: Trace formula consists of 1997 conjuncts, 119 conjunts are in the unsatisfiable core [2022-11-20 12:43:05,835 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:43:20,780 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 12:43:20,781 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:43:28,312 WARN L233 SmtUtils]: Spent 7.51s 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 12:44:03,478 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 12:44:03,478 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:44:03,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [353929234] [2022-11-20 12:44:03,479 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [353929234] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:44:03,480 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:44:03,481 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [115, 115] total 228 [2022-11-20 12:44:03,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577638243] [2022-11-20 12:44:03,481 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:44:03,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 228 states [2022-11-20 12:44:03,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:44:03,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 228 interpolants. [2022-11-20 12:44:03,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7969, Invalid=43787, Unknown=0, NotChecked=0, Total=51756 [2022-11-20 12:44:03,495 INFO L87 Difference]: Start difference. First operand 356 states and 389 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 12:45:53,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:45:53,323 INFO L93 Difference]: Finished difference Result 395 states and 451 transitions. [2022-11-20 12:45:53,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 139 states. [2022-11-20 12:45:53,325 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 12:45:53,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:45:53,328 INFO L225 Difference]: With dead ends: 395 [2022-11-20 12:45:53,328 INFO L226 Difference]: Without dead ends: 385 [2022-11-20 12:45:53,347 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 472 GetRequests, 222 SyntacticMatches, 0 SemanticMatches, 250 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19225 ImplicationChecksByTransitivity, 58.5s TimeCoverageRelationStatistics Valid=10995, Invalid=52257, Unknown=0, NotChecked=0, Total=63252 [2022-11-20 12:45:53,348 INFO L413 NwaCegarLoop]: 265 mSDtfsCounter, 2622 mSDsluCounter, 30455 mSDsCounter, 0 mSdLazyCounter, 16456 mSolverCounterSat, 1077 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 85.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2622 SdHoareTripleChecker+Valid, 30720 SdHoareTripleChecker+Invalid, 17533 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 1077 IncrementalHoareTripleChecker+Valid, 16456 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 98.0s IncrementalHoareTripleChecker+Time [2022-11-20 12:45:53,348 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2622 Valid, 30720 Invalid, 17533 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [1077 Valid, 16456 Invalid, 0 Unknown, 0 Unchecked, 98.0s Time] [2022-11-20 12:45:53,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385 states. [2022-11-20 12:45:53,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385 to 365. [2022-11-20 12:45:53,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 365 states, 269 states have (on average 1.3903345724907064) internal successors, (374), 349 states have internal predecessors, (374), 12 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-11-20 12:45:53,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 398 transitions. [2022-11-20 12:45:53,377 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 398 transitions. Word has length 225 [2022-11-20 12:45:53,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:45:53,380 INFO L495 AbstractCegarLoop]: Abstraction has 365 states and 398 transitions. [2022-11-20 12:45:53,380 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 12:45:53,380 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 398 transitions. [2022-11-20 12:45:53,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2022-11-20 12:45:53,384 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:45:53,384 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 12:45:53,431 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343f2d70-303e-4e45-907c-48b7b4f3fac5/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 12:45:53,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343f2d70-303e-4e45-907c-48b7b4f3fac5/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 12:45:53,607 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 84 more)] === [2022-11-20 12:45:53,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:45:53,608 INFO L85 PathProgramCache]: Analyzing trace with hash -639833456, now seen corresponding path program 3 times [2022-11-20 12:45:53,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:45:53,610 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [48729088] [2022-11-20 12:45:53,610 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 12:45:53,611 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 12:45:53,611 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343f2d70-303e-4e45-907c-48b7b4f3fac5/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:45:53,612 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343f2d70-303e-4e45-907c-48b7b4f3fac5/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 12:45:53,657 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343f2d70-303e-4e45-907c-48b7b4f3fac5/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 12:45:54,730 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-11-20 12:45:54,731 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:45:54,751 INFO L263 TraceCheckSpWp]: Trace formula consists of 373 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-20 12:45:54,755 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:45:54,961 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 12:45:55,007 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 12:45:55,013 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 12:45:55,020 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 12:45:55,051 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-20 12:45:55,051 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 12:45:55,174 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 12:45:55,660 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-20 12:45:55,661 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 12:45:55,816 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 12:45:55,817 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:45:59,122 INFO L321 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2022-11-20 12:45:59,122 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 12:45:59,147 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 12:45:59,148 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:45:59,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [48729088] [2022-11-20 12:45:59,160 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [48729088] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:45:59,160 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:45:59,161 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 25 [2022-11-20 12:45:59,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207185463] [2022-11-20 12:45:59,161 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:45:59,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-20 12:45:59,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:45:59,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-20 12:45:59,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=368, Unknown=5, NotChecked=210, Total=650 [2022-11-20 12:45:59,163 INFO L87 Difference]: Start difference. First operand 365 states and 398 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 12:46:02,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:46:02,225 INFO L93 Difference]: Finished difference Result 529 states and 571 transitions. [2022-11-20 12:46:02,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-20 12:46:02,226 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 12:46:02,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:46:02,229 INFO L225 Difference]: With dead ends: 529 [2022-11-20 12:46:02,230 INFO L226 Difference]: Without dead ends: 529 [2022-11-20 12:46:02,230 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 479 GetRequests, 440 SyntacticMatches, 5 SemanticMatches, 34 ConstructedPredicates, 5 IntricatePredicates, 1 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=178, Invalid=767, Unknown=5, NotChecked=310, Total=1260 [2022-11-20 12:46:02,231 INFO L413 NwaCegarLoop]: 228 mSDtfsCounter, 282 mSDsluCounter, 2279 mSDsCounter, 0 mSdLazyCounter, 918 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 282 SdHoareTripleChecker+Valid, 2507 SdHoareTripleChecker+Invalid, 2575 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 918 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1649 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-20 12:46:02,232 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [282 Valid, 2507 Invalid, 2575 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 918 Invalid, 0 Unknown, 1649 Unchecked, 2.1s Time] [2022-11-20 12:46:02,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 529 states. [2022-11-20 12:46:02,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 529 to 520. [2022-11-20 12:46:02,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 520 states, 421 states have (on average 1.2612826603325415) internal successors, (531), 500 states have internal predecessors, (531), 14 states have call successors, (14), 5 states have call predecessors, (14), 5 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2022-11-20 12:46:02,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 520 states to 520 states and 559 transitions. [2022-11-20 12:46:02,248 INFO L78 Accepts]: Start accepts. Automaton has 520 states and 559 transitions. Word has length 234 [2022-11-20 12:46:02,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:46:02,249 INFO L495 AbstractCegarLoop]: Abstraction has 520 states and 559 transitions. [2022-11-20 12:46:02,249 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 12:46:02,249 INFO L276 IsEmpty]: Start isEmpty. Operand 520 states and 559 transitions. [2022-11-20 12:46:02,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2022-11-20 12:46:02,253 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:46:02,253 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 12:46:02,274 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343f2d70-303e-4e45-907c-48b7b4f3fac5/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 12:46:02,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343f2d70-303e-4e45-907c-48b7b4f3fac5/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 12:46:02,467 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 84 more)] === [2022-11-20 12:46:02,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:46:02,468 INFO L85 PathProgramCache]: Analyzing trace with hash -639833455, now seen corresponding path program 1 times [2022-11-20 12:46:02,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:46:02,469 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [564613249] [2022-11-20 12:46:02,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:46:02,469 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 12:46:02,469 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343f2d70-303e-4e45-907c-48b7b4f3fac5/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:46:02,470 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343f2d70-303e-4e45-907c-48b7b4f3fac5/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 12:46:02,472 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343f2d70-303e-4e45-907c-48b7b4f3fac5/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 12:46:07,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:46:07,129 INFO L263 TraceCheckSpWp]: Trace formula consists of 2096 conjuncts, 44 conjunts are in the unsatisfiable core [2022-11-20 12:46:07,141 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:46:07,164 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 12:46:07,173 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 12:46:07,701 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 12:46:07,862 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:46:07,863 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 12:46:07,877 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-20 12:46:07,877 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 12:46:07,975 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 12:46:08,686 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-20 12:46:08,686 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 12:46:08,831 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 12:46:08,831 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:46:09,703 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:46:09,704 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [564613249] [2022-11-20 12:46:09,704 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [564613249] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:46:09,704 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1590996613] [2022-11-20 12:46:09,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:46:09,705 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-20 12:46:09,705 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343f2d70-303e-4e45-907c-48b7b4f3fac5/bin/uautomizer-ug76WZFUDN/cvc4 [2022-11-20 12:46:09,706 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343f2d70-303e-4e45-907c-48b7b4f3fac5/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-20 12:46:09,708 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343f2d70-303e-4e45-907c-48b7b4f3fac5/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt (19)] Waiting until timeout for monitored process [2022-11-20 12:46:43,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:46:44,925 INFO L263 TraceCheckSpWp]: Trace formula consists of 2096 conjuncts, 50 conjunts are in the unsatisfiable core [2022-11-20 12:46:44,932 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:46:44,944 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 12:46:44,965 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 12:46:45,218 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 12:46:45,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:46:45,413 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 12:46:45,442 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-20 12:46:45,442 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 12:46:46,052 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-20 12:46:46,053 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 12:46:46,106 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 12:46:46,107 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:46:46,734 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1590996613] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:46:46,735 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:46:46,735 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 15 [2022-11-20 12:46:46,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188012388] [2022-11-20 12:46:46,735 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:46:46,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-20 12:46:46,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:46:46,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-20 12:46:46,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=177, Unknown=3, NotChecked=84, Total=306 [2022-11-20 12:46:46,737 INFO L87 Difference]: Start difference. First operand 520 states and 559 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 12:46:51,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:46:51,983 INFO L93 Difference]: Finished difference Result 621 states and 679 transitions. [2022-11-20 12:46:51,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-20 12:46:51,993 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 12:46:51,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:46:51,996 INFO L225 Difference]: With dead ends: 621 [2022-11-20 12:46:51,996 INFO L226 Difference]: Without dead ends: 621 [2022-11-20 12:46:51,997 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 479 GetRequests, 457 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=61, Invalid=326, Unknown=5, NotChecked=114, Total=506 [2022-11-20 12:46:51,997 INFO L413 NwaCegarLoop]: 122 mSDtfsCounter, 342 mSDsluCounter, 525 mSDsCounter, 0 mSdLazyCounter, 1817 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 342 SdHoareTripleChecker+Valid, 647 SdHoareTripleChecker+Invalid, 2757 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1817 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 913 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2022-11-20 12:46:51,998 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [342 Valid, 647 Invalid, 2757 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 1817 Invalid, 0 Unknown, 913 Unchecked, 4.3s Time] [2022-11-20 12:46:51,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 621 states. [2022-11-20 12:46:52,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 621 to 520. [2022-11-20 12:46:52,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 520 states, 421 states have (on average 1.2589073634204275) internal successors, (530), 500 states have internal predecessors, (530), 14 states have call successors, (14), 5 states have call predecessors, (14), 5 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2022-11-20 12:46:52,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 520 states to 520 states and 558 transitions. [2022-11-20 12:46:52,016 INFO L78 Accepts]: Start accepts. Automaton has 520 states and 558 transitions. Word has length 234 [2022-11-20 12:46:52,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:46:52,017 INFO L495 AbstractCegarLoop]: Abstraction has 520 states and 558 transitions. [2022-11-20 12:46:52,017 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 12:46:52,017 INFO L276 IsEmpty]: Start isEmpty. Operand 520 states and 558 transitions. [2022-11-20 12:46:52,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2022-11-20 12:46:52,021 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:46:52,022 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 12:46:52,240 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343f2d70-303e-4e45-907c-48b7b4f3fac5/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt (19)] Forceful destruction successful, exit code 0 [2022-11-20 12:46:52,275 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343f2d70-303e-4e45-907c-48b7b4f3fac5/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)] Forceful destruction successful, exit code 0 [2022-11-20 12:46:52,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343f2d70-303e-4e45-907c-48b7b4f3fac5/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343f2d70-303e-4e45-907c-48b7b4f3fac5/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 12:46:52,445 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 84 more)] === [2022-11-20 12:46:52,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:46:52,445 INFO L85 PathProgramCache]: Analyzing trace with hash -213617027, now seen corresponding path program 1 times [2022-11-20 12:46:52,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:46:52,446 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1958785415] [2022-11-20 12:46:52,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:46:52,447 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 12:46:52,447 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343f2d70-303e-4e45-907c-48b7b4f3fac5/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:46:52,448 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343f2d70-303e-4e45-907c-48b7b4f3fac5/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 12:46:52,456 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343f2d70-303e-4e45-907c-48b7b4f3fac5/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 12:46:55,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:46:55,467 INFO L263 TraceCheckSpWp]: Trace formula consists of 2116 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-20 12:46:55,474 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:46:55,753 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 12:46:55,754 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:46:55,896 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 12:46:56,594 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 12:46:56,595 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:46:56,595 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1958785415] [2022-11-20 12:46:56,595 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1958785415] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:46:56,595 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:46:56,595 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2022-11-20 12:46:56,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471130930] [2022-11-20 12:46:56,596 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:46:56,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-20 12:46:56,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:46:56,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-20 12:46:56,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=262, Unknown=0, NotChecked=0, Total=306 [2022-11-20 12:46:56,598 INFO L87 Difference]: Start difference. First operand 520 states and 558 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 12:47:00,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:47:00,226 INFO L93 Difference]: Finished difference Result 538 states and 583 transitions. [2022-11-20 12:47:00,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-20 12:47:00,228 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 12:47:00,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:47:00,230 INFO L225 Difference]: With dead ends: 538 [2022-11-20 12:47:00,230 INFO L226 Difference]: Without dead ends: 538 [2022-11-20 12:47:00,231 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 480 GetRequests, 458 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 12:47:00,232 INFO L413 NwaCegarLoop]: 224 mSDtfsCounter, 224 mSDsluCounter, 2554 mSDsCounter, 0 mSdLazyCounter, 583 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 225 SdHoareTripleChecker+Valid, 2778 SdHoareTripleChecker+Invalid, 615 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 583 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-11-20 12:47:00,232 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [225 Valid, 2778 Invalid, 615 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 583 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2022-11-20 12:47:00,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 538 states. [2022-11-20 12:47:00,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 538 to 519. [2022-11-20 12:47:00,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 519 states, 421 states have (on average 1.2565320665083135) internal successors, (529), 499 states have internal predecessors, (529), 14 states have call successors, (14), 5 states have call predecessors, (14), 5 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2022-11-20 12:47:00,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 519 states to 519 states and 557 transitions. [2022-11-20 12:47:00,249 INFO L78 Accepts]: Start accepts. Automaton has 519 states and 557 transitions. Word has length 237 [2022-11-20 12:47:00,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:47:00,250 INFO L495 AbstractCegarLoop]: Abstraction has 519 states and 557 transitions. [2022-11-20 12:47:00,250 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 12:47:00,251 INFO L276 IsEmpty]: Start isEmpty. Operand 519 states and 557 transitions. [2022-11-20 12:47:00,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2022-11-20 12:47:00,253 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:47:00,253 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 12:47:00,299 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343f2d70-303e-4e45-907c-48b7b4f3fac5/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 12:47:00,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343f2d70-303e-4e45-907c-48b7b4f3fac5/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 12:47:00,467 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 84 more)] === [2022-11-20 12:47:00,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:47:00,468 INFO L85 PathProgramCache]: Analyzing trace with hash 1276670525, now seen corresponding path program 1 times [2022-11-20 12:47:00,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:47:00,469 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1903658053] [2022-11-20 12:47:00,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:47:00,469 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 12:47:00,469 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343f2d70-303e-4e45-907c-48b7b4f3fac5/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:47:00,470 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343f2d70-303e-4e45-907c-48b7b4f3fac5/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 12:47:00,472 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343f2d70-303e-4e45-907c-48b7b4f3fac5/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 12:47:05,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:47:05,120 INFO L263 TraceCheckSpWp]: Trace formula consists of 2131 conjuncts, 29 conjunts are in the unsatisfiable core [2022-11-20 12:47:05,127 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:47:05,138 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 12:47:05,369 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 12:47:05,526 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-20 12:47:05,526 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 12:47:05,551 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 12:47:05,606 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 12:47:05,614 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 12:47:05,622 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 12:47:05,660 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-20 12:47:05,661 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 12:47:05,770 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 12:47:06,300 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-20 12:47:06,300 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 12:47:06,456 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 12:47:06,457 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:47:12,337 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 12:47:12,337 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:47:12,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1903658053] [2022-11-20 12:47:12,338 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1903658053] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:47:12,338 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:47:12,338 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 26 [2022-11-20 12:47:12,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553959031] [2022-11-20 12:47:12,338 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:47:12,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-11-20 12:47:12,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:47:12,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-11-20 12:47:12,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=361, Unknown=7, NotChecked=258, Total=702 [2022-11-20 12:47:12,341 INFO L87 Difference]: Start difference. First operand 519 states and 557 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 12:47:31,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:47:31,050 INFO L93 Difference]: Finished difference Result 848 states and 901 transitions. [2022-11-20 12:47:31,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-20 12:47:31,051 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 12:47:31,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:47:31,055 INFO L225 Difference]: With dead ends: 848 [2022-11-20 12:47:31,056 INFO L226 Difference]: Without dead ends: 848 [2022-11-20 12:47:31,056 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 490 GetRequests, 451 SyntacticMatches, 6 SemanticMatches, 33 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 19.9s TimeCoverageRelationStatistics Valid=154, Invalid=675, Unknown=7, NotChecked=354, Total=1190 [2022-11-20 12:47:31,057 INFO L413 NwaCegarLoop]: 226 mSDtfsCounter, 314 mSDsluCounter, 2084 mSDsCounter, 0 mSdLazyCounter, 798 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 314 SdHoareTripleChecker+Valid, 2310 SdHoareTripleChecker+Invalid, 2509 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 798 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1703 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-11-20 12:47:31,058 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [314 Valid, 2310 Invalid, 2509 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 798 Invalid, 0 Unknown, 1703 Unchecked, 1.9s Time] [2022-11-20 12:47:31,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 848 states. [2022-11-20 12:47:31,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 848 to 839. [2022-11-20 12:47:31,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 839 states, 733 states have (on average 1.165075034106412) internal successors, (854), 810 states have internal predecessors, (854), 19 states have call successors, (19), 9 states have call predecessors, (19), 9 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2022-11-20 12:47:31,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 839 states to 839 states and 892 transitions. [2022-11-20 12:47:31,083 INFO L78 Accepts]: Start accepts. Automaton has 839 states and 892 transitions. Word has length 240 [2022-11-20 12:47:31,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:47:31,084 INFO L495 AbstractCegarLoop]: Abstraction has 839 states and 892 transitions. [2022-11-20 12:47:31,084 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 12:47:31,084 INFO L276 IsEmpty]: Start isEmpty. Operand 839 states and 892 transitions. [2022-11-20 12:47:31,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2022-11-20 12:47:31,086 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:47:31,086 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 12:47:31,131 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343f2d70-303e-4e45-907c-48b7b4f3fac5/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 12:47:31,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343f2d70-303e-4e45-907c-48b7b4f3fac5/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 12:47:31,306 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 84 more)] === [2022-11-20 12:47:31,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:47:31,307 INFO L85 PathProgramCache]: Analyzing trace with hash 1276670526, now seen corresponding path program 1 times [2022-11-20 12:47:31,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:47:31,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [360184063] [2022-11-20 12:47:31,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:47:31,309 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 12:47:31,309 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343f2d70-303e-4e45-907c-48b7b4f3fac5/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:47:31,310 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343f2d70-303e-4e45-907c-48b7b4f3fac5/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 12:47:31,355 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343f2d70-303e-4e45-907c-48b7b4f3fac5/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 12:47:35,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:47:35,865 INFO L263 TraceCheckSpWp]: Trace formula consists of 2131 conjuncts, 59 conjunts are in the unsatisfiable core [2022-11-20 12:47:35,902 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:47:35,925 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 12:47:35,935 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 12:47:36,485 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 12:47:36,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:47:36,641 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 12:47:36,661 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-20 12:47:36,661 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 12:47:37,178 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-20 12:47:37,178 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 12:47:37,386 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 12:47:38,041 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-20 12:47:38,042 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 12:47:38,553 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 12:47:38,553 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:47:40,045 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:47:40,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [360184063] [2022-11-20 12:47:40,046 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [360184063] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:47:40,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1168940109] [2022-11-20 12:47:40,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:47:40,046 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-20 12:47:40,047 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343f2d70-303e-4e45-907c-48b7b4f3fac5/bin/uautomizer-ug76WZFUDN/cvc4 [2022-11-20 12:47:40,048 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343f2d70-303e-4e45-907c-48b7b4f3fac5/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-20 12:47:40,050 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343f2d70-303e-4e45-907c-48b7b4f3fac5/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt (23)] Waiting until timeout for monitored process [2022-11-20 12:48:29,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:48:30,973 INFO L263 TraceCheckSpWp]: Trace formula consists of 2131 conjuncts, 58 conjunts are in the unsatisfiable core [2022-11-20 12:48:30,982 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:48:31,002 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 12:48:31,011 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 12:48:31,281 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 12:48:31,567 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-20 12:48:31,567 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 12:48:31,580 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 12:48:31,640 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 12:48:31,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:48:31,806 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 12:48:31,820 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-20 12:48:31,821 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 12:48:32,541 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-20 12:48:32,542 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 12:48:32,831 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 12:48:32,831 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:48:33,853 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1168940109] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:48:33,854 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:48:33,854 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 15] total 24 [2022-11-20 12:48:33,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853112877] [2022-11-20 12:48:33,854 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:48:33,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-20 12:48:33,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:48:33,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-20 12:48:33,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=525, Unknown=8, NotChecked=196, Total=812 [2022-11-20 12:48:33,857 INFO L87 Difference]: Start difference. First operand 839 states and 892 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 12:48:40,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:48:40,241 INFO L93 Difference]: Finished difference Result 969 states and 1047 transitions. [2022-11-20 12:48:40,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-20 12:48:40,242 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 12:48:40,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:48:40,245 INFO L225 Difference]: With dead ends: 969 [2022-11-20 12:48:40,245 INFO L226 Difference]: Without dead ends: 969 [2022-11-20 12:48:40,246 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 506 GetRequests, 471 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=133, Invalid=931, Unknown=8, NotChecked=260, Total=1332 [2022-11-20 12:48:40,246 INFO L413 NwaCegarLoop]: 118 mSDtfsCounter, 234 mSDsluCounter, 1016 mSDsCounter, 0 mSdLazyCounter, 2009 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 234 SdHoareTripleChecker+Valid, 1134 SdHoareTripleChecker+Invalid, 4288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 2009 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2264 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2022-11-20 12:48:40,247 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [234 Valid, 1134 Invalid, 4288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 2009 Invalid, 0 Unknown, 2264 Unchecked, 4.8s Time] [2022-11-20 12:48:40,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 969 states. [2022-11-20 12:48:40,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 969 to 868. [2022-11-20 12:48:40,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 868 states, 760 states have (on average 1.1657894736842105) internal successors, (886), 838 states have internal predecessors, (886), 20 states have call successors, (20), 10 states have call predecessors, (20), 10 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2022-11-20 12:48:40,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 868 states to 868 states and 926 transitions. [2022-11-20 12:48:40,272 INFO L78 Accepts]: Start accepts. Automaton has 868 states and 926 transitions. Word has length 240 [2022-11-20 12:48:40,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:48:40,275 INFO L495 AbstractCegarLoop]: Abstraction has 868 states and 926 transitions. [2022-11-20 12:48:40,275 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 12:48:40,276 INFO L276 IsEmpty]: Start isEmpty. Operand 868 states and 926 transitions. [2022-11-20 12:48:40,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2022-11-20 12:48:40,278 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:48:40,278 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 12:48:40,480 WARN L435 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343f2d70-303e-4e45-907c-48b7b4f3fac5/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt (23)] Forcibly destroying the process [2022-11-20 12:48:40,492 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343f2d70-303e-4e45-907c-48b7b4f3fac5/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt (23)] Forceful destruction successful, exit code 0 [2022-11-20 12:48:40,528 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343f2d70-303e-4e45-907c-48b7b4f3fac5/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 12:48:40,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343f2d70-303e-4e45-907c-48b7b4f3fac5/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343f2d70-303e-4e45-907c-48b7b4f3fac5/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 12:48:40,695 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 84 more)] === [2022-11-20 12:48:40,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:48:40,696 INFO L85 PathProgramCache]: Analyzing trace with hash 922080644, now seen corresponding path program 1 times [2022-11-20 12:48:40,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:48:40,697 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1086212154] [2022-11-20 12:48:40,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:48:40,697 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 12:48:40,698 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343f2d70-303e-4e45-907c-48b7b4f3fac5/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:48:40,698 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343f2d70-303e-4e45-907c-48b7b4f3fac5/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 12:48:40,700 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343f2d70-303e-4e45-907c-48b7b4f3fac5/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 12:48:45,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:48:45,382 INFO L263 TraceCheckSpWp]: Trace formula consists of 2137 conjuncts, 42 conjunts are in the unsatisfiable core [2022-11-20 12:48:45,388 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:48:45,400 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 12:48:45,413 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 12:48:45,931 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 12:48:46,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:48:46,101 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 12:48:46,116 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-20 12:48:46,116 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 12:48:46,215 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 12:48:46,911 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-20 12:48:46,911 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 12:48:47,162 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 12:48:47,162 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:48:48,167 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:48:48,167 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1086212154] [2022-11-20 12:48:48,167 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1086212154] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:48:48,167 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2087902543] [2022-11-20 12:48:48,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:48:48,167 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-20 12:48:48,168 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343f2d70-303e-4e45-907c-48b7b4f3fac5/bin/uautomizer-ug76WZFUDN/cvc4 [2022-11-20 12:48:48,169 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343f2d70-303e-4e45-907c-48b7b4f3fac5/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-20 12:48:48,170 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343f2d70-303e-4e45-907c-48b7b4f3fac5/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt (25)] Waiting until timeout for monitored process [2022-11-20 12:49:34,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:49:36,243 INFO L263 TraceCheckSpWp]: Trace formula consists of 2137 conjuncts, 52 conjunts are in the unsatisfiable core [2022-11-20 12:49:36,249 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:49:36,260 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 12:49:36,268 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 12:49:36,871 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-20 12:49:36,872 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 12:49:36,883 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 12:49:36,989 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 12:49:37,647 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-20 12:49:37,648 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 12:49:37,870 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 12:49:37,871 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:49:38,555 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2087902543] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:49:38,555 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:49:38,555 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 17] total 19 [2022-11-20 12:49:38,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404879161] [2022-11-20 12:49:38,556 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:49:38,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-20 12:49:38,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:49:38,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-20 12:49:38,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=298, Unknown=3, NotChecked=108, Total=462 [2022-11-20 12:49:38,557 INFO L87 Difference]: Start difference. First operand 868 states and 926 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 12:49:42,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:49:42,656 INFO L93 Difference]: Finished difference Result 978 states and 1059 transitions. [2022-11-20 12:49:42,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-20 12:49:42,656 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 12:49:42,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:49:42,663 INFO L225 Difference]: With dead ends: 978 [2022-11-20 12:49:42,663 INFO L226 Difference]: Without dead ends: 978 [2022-11-20 12:49:42,664 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 506 GetRequests, 480 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=69, Invalid=446, Unknown=3, NotChecked=132, Total=650 [2022-11-20 12:49:42,665 INFO L413 NwaCegarLoop]: 114 mSDtfsCounter, 234 mSDsluCounter, 685 mSDsCounter, 0 mSdLazyCounter, 1465 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 234 SdHoareTripleChecker+Valid, 799 SdHoareTripleChecker+Invalid, 4065 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1465 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2585 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-11-20 12:49:42,665 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [234 Valid, 799 Invalid, 4065 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1465 Invalid, 0 Unknown, 2585 Unchecked, 3.4s Time] [2022-11-20 12:49:42,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 978 states. [2022-11-20 12:49:42,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 978 to 875. [2022-11-20 12:49:42,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 875 states, 767 states have (on average 1.1694915254237288) internal successors, (897), 845 states have internal predecessors, (897), 20 states have call successors, (20), 10 states have call predecessors, (20), 10 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2022-11-20 12:49:42,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 875 states to 875 states and 937 transitions. [2022-11-20 12:49:42,704 INFO L78 Accepts]: Start accepts. Automaton has 875 states and 937 transitions. Word has length 241 [2022-11-20 12:49:42,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:49:42,705 INFO L495 AbstractCegarLoop]: Abstraction has 875 states and 937 transitions. [2022-11-20 12:49:42,705 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 12:49:42,706 INFO L276 IsEmpty]: Start isEmpty. Operand 875 states and 937 transitions. [2022-11-20 12:49:42,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2022-11-20 12:49:42,707 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:49:42,708 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 12:49:42,760 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343f2d70-303e-4e45-907c-48b7b4f3fac5/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 12:49:43,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343f2d70-303e-4e45-907c-48b7b4f3fac5/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_343f2d70-303e-4e45-907c-48b7b4f3fac5/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt [2022-11-20 12:49:43,136 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 84 more)] === [2022-11-20 12:49:43,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:49:43,136 INFO L85 PathProgramCache]: Analyzing trace with hash 922080643, now seen corresponding path program 1 times [2022-11-20 12:49:43,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:49:43,138 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1428530542] [2022-11-20 12:49:43,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:49:43,138 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 12:49:43,139 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343f2d70-303e-4e45-907c-48b7b4f3fac5/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:49:43,140 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343f2d70-303e-4e45-907c-48b7b4f3fac5/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 12:49:43,135 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343f2d70-303e-4e45-907c-48b7b4f3fac5/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt (25)] Forceful destruction successful, exit code 0 [2022-11-20 12:49:43,148 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343f2d70-303e-4e45-907c-48b7b4f3fac5/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 12:49:46,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:49:46,509 INFO L263 TraceCheckSpWp]: Trace formula consists of 2137 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 12:49:46,513 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:49:46,594 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 12:49:46,594 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:49:46,594 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:49:46,594 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1428530542] [2022-11-20 12:49:46,594 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1428530542] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:49:46,594 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:49:46,595 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:49:46,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070348566] [2022-11-20 12:49:46,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:49:46,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:49:46,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:49:46,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:49:46,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:49:46,596 INFO L87 Difference]: Start difference. First operand 875 states and 937 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 12:49:47,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:49:47,058 INFO L93 Difference]: Finished difference Result 888 states and 954 transitions. [2022-11-20 12:49:47,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 12:49:47,058 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 12:49:47,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:49:47,061 INFO L225 Difference]: With dead ends: 888 [2022-11-20 12:49:47,061 INFO L226 Difference]: Without dead ends: 888 [2022-11-20 12:49:47,061 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 12:49:47,062 INFO L413 NwaCegarLoop]: 238 mSDtfsCounter, 152 mSDsluCounter, 284 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 522 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-20 12:49:47,062 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [159 Valid, 522 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-20 12:49:47,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 888 states. [2022-11-20 12:49:47,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 888 to 874. [2022-11-20 12:49:47,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 874 states, 767 states have (on average 1.166883963494133) internal successors, (895), 844 states have internal predecessors, (895), 20 states have call successors, (20), 10 states have call predecessors, (20), 10 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2022-11-20 12:49:47,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 874 states to 874 states and 935 transitions. [2022-11-20 12:49:47,082 INFO L78 Accepts]: Start accepts. Automaton has 874 states and 935 transitions. Word has length 241 [2022-11-20 12:49:47,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:49:47,082 INFO L495 AbstractCegarLoop]: Abstraction has 874 states and 935 transitions. [2022-11-20 12:49:47,083 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 12:49:47,083 INFO L276 IsEmpty]: Start isEmpty. Operand 874 states and 935 transitions. [2022-11-20 12:49:47,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2022-11-20 12:49:47,085 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:49:47,085 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 12:49:47,130 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343f2d70-303e-4e45-907c-48b7b4f3fac5/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 12:49:47,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343f2d70-303e-4e45-907c-48b7b4f3fac5/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 12:49:47,311 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 84 more)] === [2022-11-20 12:49:47,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:49:47,312 INFO L85 PathProgramCache]: Analyzing trace with hash 1356236069, now seen corresponding path program 1 times [2022-11-20 12:49:47,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:49:47,314 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [604938159] [2022-11-20 12:49:47,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:49:47,314 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 12:49:47,314 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343f2d70-303e-4e45-907c-48b7b4f3fac5/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:49:47,315 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343f2d70-303e-4e45-907c-48b7b4f3fac5/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 12:49:47,318 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343f2d70-303e-4e45-907c-48b7b4f3fac5/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 12:49:50,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:49:50,756 INFO L263 TraceCheckSpWp]: Trace formula consists of 2151 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-20 12:49:50,760 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:49:50,997 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 12:49:50,998 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:49:51,129 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 12:49:51,930 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 12:49:51,930 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:49:51,930 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [604938159] [2022-11-20 12:49:51,930 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [604938159] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:49:51,930 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:49:51,931 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2022-11-20 12:49:51,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318407084] [2022-11-20 12:49:51,931 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:49:51,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-20 12:49:51,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:49:51,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-20 12:49:51,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=262, Unknown=0, NotChecked=0, Total=306 [2022-11-20 12:49:51,933 INFO L87 Difference]: Start difference. First operand 874 states and 935 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 12:49:55,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:49:55,326 INFO L93 Difference]: Finished difference Result 887 states and 953 transitions. [2022-11-20 12:49:55,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-20 12:49:55,328 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 12:49:55,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:49:55,332 INFO L225 Difference]: With dead ends: 887 [2022-11-20 12:49:55,332 INFO L226 Difference]: Without dead ends: 887 [2022-11-20 12:49:55,332 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 492 GetRequests, 470 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=92, Invalid=460, Unknown=0, NotChecked=0, Total=552 [2022-11-20 12:49:55,333 INFO L413 NwaCegarLoop]: 221 mSDtfsCounter, 289 mSDsluCounter, 2298 mSDsCounter, 0 mSdLazyCounter, 475 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 290 SdHoareTripleChecker+Valid, 2519 SdHoareTripleChecker+Invalid, 508 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 475 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-11-20 12:49:55,333 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [290 Valid, 2519 Invalid, 508 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 475 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-11-20 12:49:55,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 887 states. [2022-11-20 12:49:55,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 887 to 873. [2022-11-20 12:49:55,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 873 states, 767 states have (on average 1.165580182529335) internal successors, (894), 843 states have internal predecessors, (894), 20 states have call successors, (20), 10 states have call predecessors, (20), 10 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2022-11-20 12:49:55,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 873 states to 873 states and 934 transitions. [2022-11-20 12:49:55,352 INFO L78 Accepts]: Start accepts. Automaton has 873 states and 934 transitions. Word has length 243 [2022-11-20 12:49:55,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:49:55,353 INFO L495 AbstractCegarLoop]: Abstraction has 873 states and 934 transitions. [2022-11-20 12:49:55,354 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 12:49:55,354 INFO L276 IsEmpty]: Start isEmpty. Operand 873 states and 934 transitions. [2022-11-20 12:49:55,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2022-11-20 12:49:55,356 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:49:55,356 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 12:49:55,403 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343f2d70-303e-4e45-907c-48b7b4f3fac5/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 12:49:55,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343f2d70-303e-4e45-907c-48b7b4f3fac5/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 12:49:55,579 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 84 more)] === [2022-11-20 12:49:55,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:49:55,580 INFO L85 PathProgramCache]: Analyzing trace with hash 871388170, now seen corresponding path program 1 times [2022-11-20 12:49:55,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:49:55,581 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1403805838] [2022-11-20 12:49:55,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:49:55,581 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 12:49:55,582 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343f2d70-303e-4e45-907c-48b7b4f3fac5/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:49:55,583 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343f2d70-303e-4e45-907c-48b7b4f3fac5/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 12:49:55,589 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343f2d70-303e-4e45-907c-48b7b4f3fac5/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 12:49:59,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:50:00,009 INFO L263 TraceCheckSpWp]: Trace formula consists of 2166 conjuncts, 40 conjunts are in the unsatisfiable core [2022-11-20 12:50:00,013 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:50:00,018 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 12:50:00,203 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 12:50:00,357 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-20 12:50:00,357 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 12:50:00,381 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 12:50:00,428 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 12:50:00,435 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 12:50:00,443 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 12:50:00,500 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-20 12:50:00,500 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 14 treesize of output 24 [2022-11-20 12:50:00,644 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 12:50:00,690 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 12:50:00,697 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 12:50:00,704 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 12:50:00,741 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-20 12:50:00,741 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 12:50:00,885 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 12:50:01,341 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-20 12:50:01,342 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 12:50:01,698 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 12:50:01,699 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:50:02,055 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:50:02,055 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1403805838] [2022-11-20 12:50:02,055 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1403805838] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:50:02,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [287078411] [2022-11-20 12:50:02,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:50:02,056 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-20 12:50:02,056 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343f2d70-303e-4e45-907c-48b7b4f3fac5/bin/uautomizer-ug76WZFUDN/cvc4 [2022-11-20 12:50:02,057 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343f2d70-303e-4e45-907c-48b7b4f3fac5/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-20 12:50:02,059 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343f2d70-303e-4e45-907c-48b7b4f3fac5/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt (29)] Waiting until timeout for monitored process [2022-11-20 12:50:37,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:50:38,198 INFO L263 TraceCheckSpWp]: Trace formula consists of 2166 conjuncts, 49 conjunts are in the unsatisfiable core [2022-11-20 12:50:38,206 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:50:38,214 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 12:50:38,663 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-20 12:50:38,663 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 12:50:39,316 INFO L321 Elim1Store]: treesize reduction 44, result has 34.3 percent of original size [2022-11-20 12:50:39,317 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 12:50:39,479 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 12:50:39,523 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 12:50:39,530 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 12:50:39,537 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 12:50:39,603 INFO L321 Elim1Store]: treesize reduction 24, result has 48.9 percent of original size [2022-11-20 12:50:39,603 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 12:50:40,408 INFO L321 Elim1Store]: treesize reduction 24, result has 57.9 percent of original size [2022-11-20 12:50:40,409 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 12:50:41,072 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 12:50:41,073 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:50:41,409 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [287078411] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:50:41,410 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:50:41,410 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 28] total 44 [2022-11-20 12:50:41,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149758445] [2022-11-20 12:50:41,411 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:50:41,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-11-20 12:50:41,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:50:41,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-11-20 12:50:41,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=211, Invalid=1091, Unknown=14, NotChecked=1134, Total=2450 [2022-11-20 12:50:41,413 INFO L87 Difference]: Start difference. First operand 873 states and 934 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 12:50:43,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:50:43,674 INFO L93 Difference]: Finished difference Result 1081 states and 1198 transitions. [2022-11-20 12:50:43,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-20 12:50:43,675 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 12:50:43,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:50:43,679 INFO L225 Difference]: With dead ends: 1081 [2022-11-20 12:50:43,679 INFO L226 Difference]: Without dead ends: 1081 [2022-11-20 12:50:43,680 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 529 GetRequests, 472 SyntacticMatches, 5 SemanticMatches, 52 ConstructedPredicates, 14 IntricatePredicates, 0 DeprecatedPredicates, 511 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=260, Invalid=1342, Unknown=14, NotChecked=1246, Total=2862 [2022-11-20 12:50:43,681 INFO L413 NwaCegarLoop]: 173 mSDtfsCounter, 208 mSDsluCounter, 3498 mSDsCounter, 0 mSdLazyCounter, 735 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 3671 SdHoareTripleChecker+Invalid, 7367 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 735 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 6608 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-20 12:50:43,682 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [208 Valid, 3671 Invalid, 7367 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 735 Invalid, 0 Unknown, 6608 Unchecked, 1.6s Time] [2022-11-20 12:50:43,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1081 states. [2022-11-20 12:50:43,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1081 to 943. [2022-11-20 12:50:43,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 943 states, 825 states have (on average 1.1733333333333333) internal successors, (968), 902 states have internal predecessors, (968), 32 states have call successors, (32), 10 states have call predecessors, (32), 10 states have return successors, (32), 30 states have call predecessors, (32), 32 states have call successors, (32) [2022-11-20 12:50:43,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 943 states to 943 states and 1032 transitions. [2022-11-20 12:50:43,706 INFO L78 Accepts]: Start accepts. Automaton has 943 states and 1032 transitions. Word has length 246 [2022-11-20 12:50:43,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:50:43,707 INFO L495 AbstractCegarLoop]: Abstraction has 943 states and 1032 transitions. [2022-11-20 12:50:43,707 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 12:50:43,707 INFO L276 IsEmpty]: Start isEmpty. Operand 943 states and 1032 transitions. [2022-11-20 12:50:43,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2022-11-20 12:50:43,709 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:50:43,710 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 12:50:43,763 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343f2d70-303e-4e45-907c-48b7b4f3fac5/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 12:50:43,974 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343f2d70-303e-4e45-907c-48b7b4f3fac5/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt (29)] Forceful destruction successful, exit code 0 [2022-11-20 12:50:44,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343f2d70-303e-4e45-907c-48b7b4f3fac5/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_343f2d70-303e-4e45-907c-48b7b4f3fac5/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt [2022-11-20 12:50:44,124 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 84 more)] === [2022-11-20 12:50:44,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:50:44,124 INFO L85 PathProgramCache]: Analyzing trace with hash 871388171, now seen corresponding path program 1 times [2022-11-20 12:50:44,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:50:44,125 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1684931847] [2022-11-20 12:50:44,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:50:44,126 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 12:50:44,126 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343f2d70-303e-4e45-907c-48b7b4f3fac5/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:50:44,127 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343f2d70-303e-4e45-907c-48b7b4f3fac5/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 12:50:44,129 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343f2d70-303e-4e45-907c-48b7b4f3fac5/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 12:50:49,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:50:49,756 INFO L263 TraceCheckSpWp]: Trace formula consists of 2166 conjuncts, 91 conjunts are in the unsatisfiable core [2022-11-20 12:50:49,766 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:50:49,784 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 12:50:49,795 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 12:50:50,277 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 12:50:50,461 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:50:50,462 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 12:50:50,477 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-20 12:50:50,477 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 12:50:50,982 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-20 12:50:50,983 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 12:50:51,317 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 12:50:51,878 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-20 12:50:51,879 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 12:50:52,285 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 12:50:53,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:50:53,709 INFO L321 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2022-11-20 12:50:53,710 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 12:50:53,728 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:50:53,729 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 12:50:54,560 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 12:50:54,560 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:50:58,280 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:50:58,280 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1684931847] [2022-11-20 12:50:58,280 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1684931847] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:50:58,280 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1166108936] [2022-11-20 12:50:58,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:50:58,281 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-20 12:50:58,281 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343f2d70-303e-4e45-907c-48b7b4f3fac5/bin/uautomizer-ug76WZFUDN/cvc4 [2022-11-20 12:50:58,282 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343f2d70-303e-4e45-907c-48b7b4f3fac5/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-20 12:50:58,284 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343f2d70-303e-4e45-907c-48b7b4f3fac5/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt (31)] Waiting until timeout for monitored process [2022-11-20 12:52:00,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:52:01,662 INFO L263 TraceCheckSpWp]: Trace formula consists of 2166 conjuncts, 87 conjunts are in the unsatisfiable core [2022-11-20 12:52:01,673 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:52:01,706 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 12:52:01,714 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 12:52:02,870 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-20 12:52:02,870 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 12:52:02,947 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-20 12:52:02,947 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 12:52:04,355 INFO L321 Elim1Store]: treesize reduction 12, result has 42.9 percent of original size [2022-11-20 12:52:04,355 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 12:52:04,387 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 12:52:04,809 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-20 12:52:04,809 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 12:52:05,248 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 12:52:05,921 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-20 12:52:05,922 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 12:52:06,733 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 12:52:06,734 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:52:08,512 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1166108936] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:52:08,512 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:52:08,513 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 32] total 45 [2022-11-20 12:52:08,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238733495] [2022-11-20 12:52:08,513 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:52:08,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-11-20 12:52:08,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:52:08,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-11-20 12:52:08,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=2088, Unknown=8, NotChecked=282, Total=2550 [2022-11-20 12:52:08,516 INFO L87 Difference]: Start difference. First operand 943 states and 1032 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 12:52:23,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:52:23,172 INFO L93 Difference]: Finished difference Result 1094 states and 1211 transitions. [2022-11-20 12:52:23,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-11-20 12:52:23,173 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 12:52:23,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:52:23,178 INFO L225 Difference]: With dead ends: 1094 [2022-11-20 12:52:23,178 INFO L226 Difference]: Without dead ends: 1094 [2022-11-20 12:52:23,179 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 541 GetRequests, 472 SyntacticMatches, 2 SemanticMatches, 67 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 533 ImplicationChecksByTransitivity, 14.3s TimeCoverageRelationStatistics Valid=433, Invalid=3852, Unknown=17, NotChecked=390, Total=4692 [2022-11-20 12:52:23,180 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 415 mSDsluCounter, 1718 mSDsCounter, 0 mSdLazyCounter, 3868 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 415 SdHoareTripleChecker+Valid, 1829 SdHoareTripleChecker+Invalid, 7573 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 3868 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 3662 IncrementalHoareTripleChecker+Unchecked, 9.1s IncrementalHoareTripleChecker+Time [2022-11-20 12:52:23,180 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [415 Valid, 1829 Invalid, 7573 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [43 Valid, 3868 Invalid, 0 Unknown, 3662 Unchecked, 9.1s Time] [2022-11-20 12:52:23,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1094 states. [2022-11-20 12:52:23,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1094 to 993. [2022-11-20 12:52:23,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 993 states, 872 states have (on average 1.1743119266055047) internal successors, (1024), 950 states have internal predecessors, (1024), 33 states have call successors, (33), 12 states have call predecessors, (33), 12 states have return successors, (33), 30 states have call predecessors, (33), 33 states have call successors, (33) [2022-11-20 12:52:23,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 993 states to 993 states and 1090 transitions. [2022-11-20 12:52:23,204 INFO L78 Accepts]: Start accepts. Automaton has 993 states and 1090 transitions. Word has length 246 [2022-11-20 12:52:23,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:52:23,205 INFO L495 AbstractCegarLoop]: Abstraction has 993 states and 1090 transitions. [2022-11-20 12:52:23,205 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 12:52:23,205 INFO L276 IsEmpty]: Start isEmpty. Operand 993 states and 1090 transitions. [2022-11-20 12:52:23,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2022-11-20 12:52:23,207 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:52:23,207 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 12:52:23,256 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343f2d70-303e-4e45-907c-48b7b4f3fac5/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)] Forceful destruction successful, exit code 0 [2022-11-20 12:52:23,623 WARN L435 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343f2d70-303e-4e45-907c-48b7b4f3fac5/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt (31)] Forcibly destroying the process [2022-11-20 12:52:23,739 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343f2d70-303e-4e45-907c-48b7b4f3fac5/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt (31)] Forceful destruction successful, exit code 0 [2022-11-20 12:52:23,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343f2d70-303e-4e45-907c-48b7b4f3fac5/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=3,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343f2d70-303e-4e45-907c-48b7b4f3fac5/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt [2022-11-20 12:52:23,739 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 84 more)] === [2022-11-20 12:52:23,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:52:23,740 INFO L85 PathProgramCache]: Analyzing trace with hash 1243229547, now seen corresponding path program 1 times [2022-11-20 12:52:23,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:52:23,742 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1127969344] [2022-11-20 12:52:23,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:52:23,742 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 12:52:23,742 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343f2d70-303e-4e45-907c-48b7b4f3fac5/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:52:23,744 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343f2d70-303e-4e45-907c-48b7b4f3fac5/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 12:52:23,767 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343f2d70-303e-4e45-907c-48b7b4f3fac5/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 12:52:27,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:52:27,538 INFO L263 TraceCheckSpWp]: Trace formula consists of 2172 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 12:52:27,541 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:52:27,645 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 12:52:27,645 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:52:27,646 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:52:27,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1127969344] [2022-11-20 12:52:27,646 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1127969344] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:52:27,646 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:52:27,646 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:52:27,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896818116] [2022-11-20 12:52:27,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:52:27,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:52:27,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:52:27,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:52:27,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:52:27,648 INFO L87 Difference]: Start difference. First operand 993 states and 1090 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 12:52:28,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:52:28,115 INFO L93 Difference]: Finished difference Result 1001 states and 1101 transitions. [2022-11-20 12:52:28,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 12:52:28,116 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 12:52:28,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:52:28,120 INFO L225 Difference]: With dead ends: 1001 [2022-11-20 12:52:28,120 INFO L226 Difference]: Without dead ends: 1001 [2022-11-20 12:52:28,120 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 12:52:28,121 INFO L413 NwaCegarLoop]: 236 mSDtfsCounter, 129 mSDsluCounter, 282 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 518 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-20 12:52:28,121 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 518 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-20 12:52:28,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1001 states. [2022-11-20 12:52:28,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1001 to 992. [2022-11-20 12:52:28,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 992 states, 872 states have (on average 1.173165137614679) internal successors, (1023), 949 states have internal predecessors, (1023), 33 states have call successors, (33), 12 states have call predecessors, (33), 12 states have return successors, (33), 30 states have call predecessors, (33), 33 states have call successors, (33) [2022-11-20 12:52:28,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 992 states to 992 states and 1089 transitions. [2022-11-20 12:52:28,143 INFO L78 Accepts]: Start accepts. Automaton has 992 states and 1089 transitions. Word has length 247 [2022-11-20 12:52:28,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:52:28,144 INFO L495 AbstractCegarLoop]: Abstraction has 992 states and 1089 transitions. [2022-11-20 12:52:28,144 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 12:52:28,144 INFO L276 IsEmpty]: Start isEmpty. Operand 992 states and 1089 transitions. [2022-11-20 12:52:28,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2022-11-20 12:52:28,146 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:52:28,147 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 12:52:28,193 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343f2d70-303e-4e45-907c-48b7b4f3fac5/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 12:52:28,371 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343f2d70-303e-4e45-907c-48b7b4f3fac5/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 12:52:28,371 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 84 more)] === [2022-11-20 12:52:28,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:52:28,372 INFO L85 PathProgramCache]: Analyzing trace with hash 1243229548, now seen corresponding path program 1 times [2022-11-20 12:52:28,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:52:28,374 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [963243565] [2022-11-20 12:52:28,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:52:28,374 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 12:52:28,374 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343f2d70-303e-4e45-907c-48b7b4f3fac5/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:52:28,378 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343f2d70-303e-4e45-907c-48b7b4f3fac5/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 12:52:28,411 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343f2d70-303e-4e45-907c-48b7b4f3fac5/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 12:52:32,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:52:32,153 INFO L263 TraceCheckSpWp]: Trace formula consists of 2172 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-20 12:52:32,157 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:52:32,663 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 12:52:32,663 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:52:32,802 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:52:32,802 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 12:52:34,331 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 12:52:34,331 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:52:34,332 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [963243565] [2022-11-20 12:52:34,332 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [963243565] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:52:34,332 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:52:34,332 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2022-11-20 12:52:34,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421045342] [2022-11-20 12:52:34,333 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:52:34,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-20 12:52:34,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:52:34,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-20 12:52:34,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2022-11-20 12:52:34,335 INFO L87 Difference]: Start difference. First operand 992 states and 1089 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 12:52:38,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:52:38,300 INFO L93 Difference]: Finished difference Result 1000 states and 1100 transitions. [2022-11-20 12:52:38,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 12:52:38,301 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 12:52:38,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:52:38,303 INFO L225 Difference]: With dead ends: 1000 [2022-11-20 12:52:38,303 INFO L226 Difference]: Without dead ends: 1000 [2022-11-20 12:52:38,304 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 12:52:38,304 INFO L413 NwaCegarLoop]: 218 mSDtfsCounter, 260 mSDsluCounter, 2493 mSDsCounter, 0 mSdLazyCounter, 526 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 261 SdHoareTripleChecker+Valid, 2711 SdHoareTripleChecker+Invalid, 554 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 526 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2022-11-20 12:52:38,304 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [261 Valid, 2711 Invalid, 554 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 526 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2022-11-20 12:52:38,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1000 states. [2022-11-20 12:52:38,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1000 to 991. [2022-11-20 12:52:38,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 991 states, 872 states have (on average 1.1720183486238531) internal successors, (1022), 948 states have internal predecessors, (1022), 33 states have call successors, (33), 12 states have call predecessors, (33), 12 states have return successors, (33), 30 states have call predecessors, (33), 33 states have call successors, (33) [2022-11-20 12:52:38,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 991 states to 991 states and 1088 transitions. [2022-11-20 12:52:38,326 INFO L78 Accepts]: Start accepts. Automaton has 991 states and 1088 transitions. Word has length 247 [2022-11-20 12:52:38,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:52:38,326 INFO L495 AbstractCegarLoop]: Abstraction has 991 states and 1088 transitions. [2022-11-20 12:52:38,326 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 12:52:38,327 INFO L276 IsEmpty]: Start isEmpty. Operand 991 states and 1088 transitions. [2022-11-20 12:52:38,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2022-11-20 12:52:38,328 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:52:38,329 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 12:52:38,376 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343f2d70-303e-4e45-907c-48b7b4f3fac5/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 12:52:38,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343f2d70-303e-4e45-907c-48b7b4f3fac5/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 12:52:38,551 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 84 more)] === [2022-11-20 12:52:38,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:52:38,552 INFO L85 PathProgramCache]: Analyzing trace with hash 742688172, now seen corresponding path program 1 times [2022-11-20 12:52:38,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:52:38,554 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [484460535] [2022-11-20 12:52:38,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:52:38,554 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 12:52:38,554 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343f2d70-303e-4e45-907c-48b7b4f3fac5/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:52:38,556 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343f2d70-303e-4e45-907c-48b7b4f3fac5/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 12:52:38,587 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343f2d70-303e-4e45-907c-48b7b4f3fac5/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 12:52:42,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:52:42,414 INFO L263 TraceCheckSpWp]: Trace formula consists of 2186 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 12:52:42,417 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:52:42,459 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 12:52:42,459 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:52:42,459 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:52:42,459 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [484460535] [2022-11-20 12:52:42,459 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [484460535] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:52:42,460 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:52:42,460 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 12:52:42,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676846217] [2022-11-20 12:52:42,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:52:42,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:52:42,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:52:42,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:52:42,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:52:42,461 INFO L87 Difference]: Start difference. First operand 991 states and 1088 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 12:52:42,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:52:42,815 INFO L93 Difference]: Finished difference Result 994 states and 1093 transitions. [2022-11-20 12:52:42,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:52:42,816 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 12:52:42,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:52:42,820 INFO L225 Difference]: With dead ends: 994 [2022-11-20 12:52:42,820 INFO L226 Difference]: Without dead ends: 994 [2022-11-20 12:52:42,820 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 12:52:42,821 INFO L413 NwaCegarLoop]: 237 mSDtfsCounter, 36 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 383 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 12:52:42,821 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 383 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 12:52:42,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 994 states. [2022-11-20 12:52:42,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 994 to 990. [2022-11-20 12:52:42,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 990 states, 872 states have (on average 1.1708715596330275) internal successors, (1021), 947 states have internal predecessors, (1021), 33 states have call successors, (33), 12 states have call predecessors, (33), 12 states have return successors, (33), 30 states have call predecessors, (33), 33 states have call successors, (33) [2022-11-20 12:52:42,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 990 states to 990 states and 1087 transitions. [2022-11-20 12:52:42,842 INFO L78 Accepts]: Start accepts. Automaton has 990 states and 1087 transitions. Word has length 249 [2022-11-20 12:52:42,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:52:42,843 INFO L495 AbstractCegarLoop]: Abstraction has 990 states and 1087 transitions. [2022-11-20 12:52:42,843 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 12:52:42,843 INFO L276 IsEmpty]: Start isEmpty. Operand 990 states and 1087 transitions. [2022-11-20 12:52:42,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2022-11-20 12:52:42,845 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:52:42,846 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 12:52:42,891 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343f2d70-303e-4e45-907c-48b7b4f3fac5/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 12:52:43,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343f2d70-303e-4e45-907c-48b7b4f3fac5/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 12:52:43,071 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 84 more)] === [2022-11-20 12:52:43,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:52:43,072 INFO L85 PathProgramCache]: Analyzing trace with hash 742688173, now seen corresponding path program 1 times [2022-11-20 12:52:43,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:52:43,073 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1788936604] [2022-11-20 12:52:43,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:52:43,073 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 12:52:43,073 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343f2d70-303e-4e45-907c-48b7b4f3fac5/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:52:43,074 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343f2d70-303e-4e45-907c-48b7b4f3fac5/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 12:52:43,077 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343f2d70-303e-4e45-907c-48b7b4f3fac5/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 12:52:46,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:52:47,081 INFO L263 TraceCheckSpWp]: Trace formula consists of 2186 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-20 12:52:47,087 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:52:47,371 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 12:52:47,371 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:52:47,494 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 12:52:48,259 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 12:52:48,259 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:52:48,260 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1788936604] [2022-11-20 12:52:48,260 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1788936604] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:52:48,260 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:52:48,260 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2022-11-20 12:52:48,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597977991] [2022-11-20 12:52:48,260 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:52:48,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-20 12:52:48,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:52:48,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-20 12:52:48,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=262, Unknown=0, NotChecked=0, Total=306 [2022-11-20 12:52:48,262 INFO L87 Difference]: Start difference. First operand 990 states and 1087 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 12:52:50,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:52:50,960 INFO L93 Difference]: Finished difference Result 998 states and 1098 transitions. [2022-11-20 12:52:50,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-20 12:52:50,961 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 12:52:50,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:52:50,963 INFO L225 Difference]: With dead ends: 998 [2022-11-20 12:52:50,963 INFO L226 Difference]: Without dead ends: 998 [2022-11-20 12:52:50,963 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 504 GetRequests, 482 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 12:52:50,964 INFO L413 NwaCegarLoop]: 219 mSDtfsCounter, 182 mSDsluCounter, 2437 mSDsCounter, 0 mSdLazyCounter, 437 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 2656 SdHoareTripleChecker+Invalid, 456 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 437 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-11-20 12:52:50,964 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [183 Valid, 2656 Invalid, 456 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 437 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-11-20 12:52:50,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 998 states. [2022-11-20 12:52:50,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 998 to 989. [2022-11-20 12:52:50,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 989 states, 872 states have (on average 1.1697247706422018) internal successors, (1020), 946 states have internal predecessors, (1020), 33 states have call successors, (33), 12 states have call predecessors, (33), 12 states have return successors, (33), 30 states have call predecessors, (33), 33 states have call successors, (33) [2022-11-20 12:52:50,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 989 states to 989 states and 1086 transitions. [2022-11-20 12:52:50,984 INFO L78 Accepts]: Start accepts. Automaton has 989 states and 1086 transitions. Word has length 249 [2022-11-20 12:52:50,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:52:50,985 INFO L495 AbstractCegarLoop]: Abstraction has 989 states and 1086 transitions. [2022-11-20 12:52:50,985 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 12:52:50,985 INFO L276 IsEmpty]: Start isEmpty. Operand 989 states and 1086 transitions. [2022-11-20 12:52:50,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2022-11-20 12:52:50,987 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:52:50,987 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 12:52:51,038 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343f2d70-303e-4e45-907c-48b7b4f3fac5/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 12:52:51,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343f2d70-303e-4e45-907c-48b7b4f3fac5/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 12:52:51,201 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 84 more)] === [2022-11-20 12:52:51,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:52:51,202 INFO L85 PathProgramCache]: Analyzing trace with hash 2046851063, now seen corresponding path program 1 times [2022-11-20 12:52:51,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:52:51,203 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1773204768] [2022-11-20 12:52:51,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:52:51,203 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 12:52:51,203 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343f2d70-303e-4e45-907c-48b7b4f3fac5/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:52:51,205 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343f2d70-303e-4e45-907c-48b7b4f3fac5/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 12:52:51,222 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343f2d70-303e-4e45-907c-48b7b4f3fac5/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 12:52:56,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:52:56,341 INFO L263 TraceCheckSpWp]: Trace formula consists of 2201 conjuncts, 51 conjunts are in the unsatisfiable core [2022-11-20 12:52:56,348 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:52:56,353 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 12:52:56,555 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 12:52:56,736 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-20 12:52:56,736 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 12:52:56,761 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 12:52:56,808 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 12:52:56,816 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 12:52:56,824 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 12:52:56,857 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-20 12:52:56,857 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 12:52:57,010 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 12:52:57,058 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 12:52:57,065 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 12:52:57,072 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 12:52:57,108 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-20 12:52:57,109 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 12:52:57,337 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 12:52:57,389 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 12:52:57,396 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 12:52:57,403 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 12:52:57,440 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-20 12:52:57,440 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 12:52:57,645 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 12:52:58,146 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-20 12:52:58,146 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 12:52:58,948 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 12:52:58,948 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:52:59,462 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:52:59,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1773204768] [2022-11-20 12:52:59,462 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1773204768] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:52:59,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1386847282] [2022-11-20 12:52:59,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:52:59,463 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-20 12:52:59,463 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343f2d70-303e-4e45-907c-48b7b4f3fac5/bin/uautomizer-ug76WZFUDN/cvc4 [2022-11-20 12:52:59,464 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343f2d70-303e-4e45-907c-48b7b4f3fac5/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-20 12:52:59,466 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343f2d70-303e-4e45-907c-48b7b4f3fac5/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt (37)] Waiting until timeout for monitored process