./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/goblint-regression/09-regions_13-arraycollapse_nr.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc8d27f3-3ac1-4610-b946-1d253be63784/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc8d27f3-3ac1-4610-b946-1d253be63784/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_fc8d27f3-3ac1-4610-b946-1d253be63784/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc8d27f3-3ac1-4610-b946-1d253be63784/bin/uautomizer-ug76WZFUDN/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/goblint-regression/09-regions_13-arraycollapse_nr.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc8d27f3-3ac1-4610-b946-1d253be63784/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_fc8d27f3-3ac1-4610-b946-1d253be63784/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 b018c23c1a90f89310fc4f08bf16b02660af5a398ccd47f63d319e7a234c112b --- 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 09:28:20,868 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 09:28:20,871 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 09:28:20,896 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 09:28:20,897 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 09:28:20,898 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 09:28:20,899 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 09:28:20,901 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 09:28:20,903 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 09:28:20,904 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 09:28:20,905 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 09:28:20,907 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 09:28:20,907 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 09:28:20,908 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 09:28:20,910 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 09:28:20,911 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 09:28:20,912 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 09:28:20,913 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 09:28:20,915 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 09:28:20,917 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 09:28:20,919 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 09:28:20,924 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 09:28:20,925 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 09:28:20,926 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 09:28:20,930 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 09:28:20,931 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 09:28:20,931 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 09:28:20,932 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 09:28:20,933 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 09:28:20,934 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 09:28:20,934 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 09:28:20,946 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 09:28:20,948 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 09:28:20,949 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 09:28:20,950 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 09:28:20,950 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 09:28:20,951 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 09:28:20,951 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 09:28:20,952 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 09:28:20,953 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 09:28:20,953 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 09:28:20,956 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc8d27f3-3ac1-4610-b946-1d253be63784/bin/uautomizer-ug76WZFUDN/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-11-20 09:28:21,005 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 09:28:21,005 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 09:28:21,005 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 09:28:21,006 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 09:28:21,006 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 09:28:21,007 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 09:28:21,019 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 09:28:21,021 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 09:28:21,021 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 09:28:21,022 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 09:28:21,023 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 09:28:21,023 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 09:28:21,024 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 09:28:21,024 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 09:28:21,024 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 09:28:21,025 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-20 09:28:21,025 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-20 09:28:21,025 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-20 09:28:21,025 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 09:28:21,026 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-20 09:28:21,026 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 09:28:21,026 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 09:28:21,027 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 09:28:21,027 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 09:28:21,028 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 09:28:21,028 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 09:28:21,028 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 09:28:21,029 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 09:28:21,029 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 09:28:21,030 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 09:28:21,030 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_fc8d27f3-3ac1-4610-b946-1d253be63784/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc8d27f3-3ac1-4610-b946-1d253be63784/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b018c23c1a90f89310fc4f08bf16b02660af5a398ccd47f63d319e7a234c112b [2022-11-20 09:28:21,382 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 09:28:21,432 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 09:28:21,436 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 09:28:21,438 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 09:28:21,438 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 09:28:21,440 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc8d27f3-3ac1-4610-b946-1d253be63784/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/goblint-regression/09-regions_13-arraycollapse_nr.i [2022-11-20 09:28:24,680 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 09:28:25,031 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 09:28:25,031 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc8d27f3-3ac1-4610-b946-1d253be63784/sv-benchmarks/c/goblint-regression/09-regions_13-arraycollapse_nr.i [2022-11-20 09:28:25,056 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc8d27f3-3ac1-4610-b946-1d253be63784/bin/uautomizer-ug76WZFUDN/data/7e15afe9b/9b81ef3acf3a493ab674dd8ed5a7cbaf/FLAGb41041744 [2022-11-20 09:28:25,079 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc8d27f3-3ac1-4610-b946-1d253be63784/bin/uautomizer-ug76WZFUDN/data/7e15afe9b/9b81ef3acf3a493ab674dd8ed5a7cbaf [2022-11-20 09:28:25,084 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 09:28:25,085 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 09:28:25,088 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 09:28:25,088 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 09:28:25,094 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 09:28:25,095 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:28:25" (1/1) ... [2022-11-20 09:28:25,096 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c1908e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:28:25, skipping insertion in model container [2022-11-20 09:28:25,096 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:28:25" (1/1) ... [2022-11-20 09:28:25,105 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 09:28:25,176 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 09:28:26,094 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 09:28:26,116 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 09:28:26,176 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 09:28:26,267 INFO L208 MainTranslator]: Completed translation [2022-11-20 09:28:26,267 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:28:26 WrapperNode [2022-11-20 09:28:26,267 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 09:28:26,269 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 09:28:26,269 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 09:28:26,269 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 09:28:26,278 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:28:26" (1/1) ... [2022-11-20 09:28:26,334 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:28:26" (1/1) ... [2022-11-20 09:28:26,379 INFO L138 Inliner]: procedures = 370, calls = 37, calls flagged for inlining = 14, calls inlined = 14, statements flattened = 165 [2022-11-20 09:28:26,403 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 09:28:26,404 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 09:28:26,404 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 09:28:26,404 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 09:28:26,412 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:28:26" (1/1) ... [2022-11-20 09:28:26,412 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:28:26" (1/1) ... [2022-11-20 09:28:26,417 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:28:26" (1/1) ... [2022-11-20 09:28:26,418 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:28:26" (1/1) ... [2022-11-20 09:28:26,430 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:28:26" (1/1) ... [2022-11-20 09:28:26,434 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:28:26" (1/1) ... [2022-11-20 09:28:26,437 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:28:26" (1/1) ... [2022-11-20 09:28:26,439 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:28:26" (1/1) ... [2022-11-20 09:28:26,443 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 09:28:26,444 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 09:28:26,444 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 09:28:26,445 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 09:28:26,446 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:28:26" (1/1) ... [2022-11-20 09:28:26,468 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 09:28:26,504 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc8d27f3-3ac1-4610-b946-1d253be63784/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:28:26,522 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc8d27f3-3ac1-4610-b946-1d253be63784/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 09:28:26,531 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc8d27f3-3ac1-4610-b946-1d253be63784/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 09:28:26,577 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 09:28:26,578 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-20 09:28:26,578 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 09:28:26,578 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 09:28:26,578 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 09:28:26,579 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-20 09:28:26,579 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-20 09:28:26,579 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 09:28:26,579 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-20 09:28:26,579 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-11-20 09:28:26,580 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-11-20 09:28:26,580 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 09:28:26,580 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 09:28:26,582 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-20 09:28:26,821 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 09:28:26,823 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 09:28:27,647 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 09:28:27,658 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 09:28:27,667 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-20 09:28:27,670 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:28:27 BoogieIcfgContainer [2022-11-20 09:28:27,671 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 09:28:27,675 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 09:28:27,676 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 09:28:27,680 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 09:28:27,681 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 09:28:25" (1/3) ... [2022-11-20 09:28:27,683 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c620bcf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:28:27, skipping insertion in model container [2022-11-20 09:28:27,684 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:28:26" (2/3) ... [2022-11-20 09:28:27,685 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c620bcf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:28:27, skipping insertion in model container [2022-11-20 09:28:27,685 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:28:27" (3/3) ... [2022-11-20 09:28:27,687 INFO L112 eAbstractionObserver]: Analyzing ICFG 09-regions_13-arraycollapse_nr.i [2022-11-20 09:28:27,711 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 09:28:27,712 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 63 error locations. [2022-11-20 09:28:27,712 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-20 09:28:27,892 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-20 09:28:27,952 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-20 09:28:27,973 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 277 places, 278 transitions, 561 flow [2022-11-20 09:28:27,976 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 277 places, 278 transitions, 561 flow [2022-11-20 09:28:27,978 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 277 places, 278 transitions, 561 flow [2022-11-20 09:28:28,191 INFO L130 PetriNetUnfolder]: 5/277 cut-off events. [2022-11-20 09:28:28,192 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-20 09:28:28,207 INFO L83 FinitePrefix]: Finished finitePrefix Result has 281 conditions, 277 events. 5/277 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 416 event pairs, 0 based on Foata normal form. 0/209 useless extension candidates. Maximal degree in co-relation 192. Up to 2 conditions per place. [2022-11-20 09:28:28,213 INFO L119 LiptonReduction]: Number of co-enabled transitions 3136 [2022-11-20 09:29:53,924 WARN L233 SmtUtils]: Spent 14.43s on a formula simplification. DAG size of input: 222 DAG size of output: 216 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-20 09:29:59,796 WARN L233 SmtUtils]: Spent 5.86s on a formula simplification that was a NOOP. DAG size: 193 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-20 09:30:12,009 WARN L233 SmtUtils]: Spent 12.21s on a formula simplification. DAG size of input: 225 DAG size of output: 219 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-20 09:30:17,304 WARN L233 SmtUtils]: Spent 5.29s on a formula simplification that was a NOOP. DAG size: 199 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-20 09:30:35,641 WARN L233 SmtUtils]: Spent 6.50s on a formula simplification that was a NOOP. DAG size: 248 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-20 09:30:47,231 WARN L233 SmtUtils]: Spent 7.23s on a formula simplification that was a NOOP. DAG size: 260 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-20 09:30:52,469 WARN L233 SmtUtils]: Spent 5.23s on a formula simplification that was a NOOP. DAG size: 230 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-20 09:31:45,758 WARN L233 SmtUtils]: Spent 53.11s on a formula simplification. DAG size of input: 334 DAG size of output: 326 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-20 09:32:03,416 WARN L233 SmtUtils]: Spent 17.65s on a formula simplification that was a NOOP. DAG size: 278 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-20 09:33:25,775 WARN L233 SmtUtils]: Spent 1.37m on a formula simplification. DAG size of input: 346 DAG size of output: 341 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-20 09:33:50,350 WARN L233 SmtUtils]: Spent 24.56s on a formula simplification that was a NOOP. DAG size: 294 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-20 09:34:06,783 WARN L233 SmtUtils]: Spent 16.43s on a formula simplification. DAG size of input: 274 DAG size of output: 272 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-20 09:34:29,230 WARN L233 SmtUtils]: Spent 17.67s on a formula simplification. DAG size of input: 286 DAG size of output: 284 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-20 09:34:53,824 WARN L233 SmtUtils]: Spent 19.60s on a formula simplification. DAG size of input: 279 DAG size of output: 277 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-20 09:34:59,100 WARN L233 SmtUtils]: Spent 5.26s on a formula simplification that was a NOOP. DAG size: 229 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-20 09:35:17,819 WARN L233 SmtUtils]: Spent 18.72s on a formula simplification. DAG size of input: 291 DAG size of output: 289 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-20 09:35:23,689 WARN L233 SmtUtils]: Spent 5.86s on a formula simplification that was a NOOP. DAG size: 242 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-20 09:35:23,701 INFO L134 LiptonReduction]: Checked pairs total: 11135 [2022-11-20 09:35:23,701 INFO L136 LiptonReduction]: Total number of compositions: 411 [2022-11-20 09:35:23,709 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 88 places, 85 transitions, 175 flow [2022-11-20 09:35:23,746 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 395 states, 248 states have (on average 2.846774193548387) internal successors, (706), 394 states have internal predecessors, (706), 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 09:35:23,766 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 09:35:23,770 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;@1a89fbb7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 09:35:23,771 INFO L358 AbstractCegarLoop]: Starting to check reachability of 76 error locations. [2022-11-20 09:35:23,774 INFO L276 IsEmpty]: Start isEmpty. Operand has 395 states, 248 states have (on average 2.846774193548387) internal successors, (706), 394 states have internal predecessors, (706), 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 09:35:23,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-20 09:35:23,780 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:35:23,780 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-20 09:35:23,781 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2022-11-20 09:35:23,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:35:23,786 INFO L85 PathProgramCache]: Analyzing trace with hash 31838, now seen corresponding path program 1 times [2022-11-20 09:35:23,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:35:23,797 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529959012] [2022-11-20 09:35:23,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:35:23,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:35:23,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:35:23,959 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 09:35:23,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:35:23,960 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529959012] [2022-11-20 09:35:23,961 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1529959012] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:35:23,961 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:35:23,961 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-20 09:35:23,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031657412] [2022-11-20 09:35:23,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:35:23,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-20 09:35:23,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:35:23,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-20 09:35:23,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 09:35:24,001 INFO L87 Difference]: Start difference. First operand has 395 states, 248 states have (on average 2.846774193548387) internal successors, (706), 394 states have internal predecessors, (706), 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) Second operand has 2 states, 1 states have (on average 2.0) internal successors, (2), 2 states have internal predecessors, (2), 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 09:35:24,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:35:24,782 INFO L93 Difference]: Finished difference Result 328 states and 609 transitions. [2022-11-20 09:35:24,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-20 09:35:24,785 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 2.0) internal successors, (2), 2 states have internal predecessors, (2), 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 2 [2022-11-20 09:35:24,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:35:24,801 INFO L225 Difference]: With dead ends: 328 [2022-11-20 09:35:24,805 INFO L226 Difference]: Without dead ends: 328 [2022-11-20 09:35:24,806 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 1 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 09:35:24,810 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-20 09:35:24,812 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 6 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-20 09:35:24,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2022-11-20 09:35:24,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 328. [2022-11-20 09:35:24,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 328 states, 232 states have (on average 2.625) internal successors, (609), 327 states have internal predecessors, (609), 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 09:35:24,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 609 transitions. [2022-11-20 09:35:24,904 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 609 transitions. Word has length 2 [2022-11-20 09:35:24,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:35:24,908 INFO L495 AbstractCegarLoop]: Abstraction has 328 states and 609 transitions. [2022-11-20 09:35:24,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 2.0) internal successors, (2), 2 states have internal predecessors, (2), 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 09:35:24,910 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 609 transitions. [2022-11-20 09:35:24,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-20 09:35:24,911 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:35:24,911 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-20 09:35:24,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 09:35:24,912 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr35REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2022-11-20 09:35:24,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:35:24,912 INFO L85 PathProgramCache]: Analyzing trace with hash 31854, now seen corresponding path program 1 times [2022-11-20 09:35:24,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:35:24,913 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350915164] [2022-11-20 09:35:24,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:35:24,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:35:25,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:35:25,138 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 09:35:25,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:35:25,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350915164] [2022-11-20 09:35:25,139 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1350915164] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:35:25,139 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:35:25,140 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-20 09:35:25,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725167030] [2022-11-20 09:35:25,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:35:25,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 09:35:25,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:35:25,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 09:35:25,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 09:35:25,142 INFO L87 Difference]: Start difference. First operand 328 states and 609 transitions. Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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 09:35:25,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:35:25,999 INFO L93 Difference]: Finished difference Result 331 states and 612 transitions. [2022-11-20 09:35:25,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 09:35:25,999 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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 2 [2022-11-20 09:35:26,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:35:26,002 INFO L225 Difference]: With dead ends: 331 [2022-11-20 09:35:26,002 INFO L226 Difference]: Without dead ends: 331 [2022-11-20 09:35:26,003 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 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 09:35:26,004 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 2 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-20 09:35:26,004 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 12 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-20 09:35:26,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2022-11-20 09:35:26,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 329. [2022-11-20 09:35:26,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 329 states, 233 states have (on average 2.6266094420600856) internal successors, (612), 328 states have internal predecessors, (612), 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 09:35:26,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 612 transitions. [2022-11-20 09:35:26,021 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 612 transitions. Word has length 2 [2022-11-20 09:35:26,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:35:26,021 INFO L495 AbstractCegarLoop]: Abstraction has 329 states and 612 transitions. [2022-11-20 09:35:26,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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 09:35:26,022 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 612 transitions. [2022-11-20 09:35:26,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-20 09:35:26,022 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:35:26,022 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-20 09:35:26,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 09:35:26,023 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2022-11-20 09:35:26,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:35:26,023 INFO L85 PathProgramCache]: Analyzing trace with hash 31828, now seen corresponding path program 1 times [2022-11-20 09:35:26,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:35:26,024 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696257376] [2022-11-20 09:35:26,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:35:26,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:35:26,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:35:26,119 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 09:35:26,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:35:26,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696257376] [2022-11-20 09:35:26,120 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696257376] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:35:26,120 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:35:26,121 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-20 09:35:26,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14319114] [2022-11-20 09:35:26,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:35:26,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 09:35:26,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:35:26,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 09:35:26,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 09:35:26,123 INFO L87 Difference]: Start difference. First operand 329 states and 612 transitions. Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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 09:35:26,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:35:26,518 INFO L93 Difference]: Finished difference Result 296 states and 548 transitions. [2022-11-20 09:35:26,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 09:35:26,518 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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 2 [2022-11-20 09:35:26,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:35:26,520 INFO L225 Difference]: With dead ends: 296 [2022-11-20 09:35:26,520 INFO L226 Difference]: Without dead ends: 296 [2022-11-20 09:35:26,521 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 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 09:35:26,522 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 28 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-20 09:35:26,522 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 1 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-20 09:35:26,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2022-11-20 09:35:26,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 296. [2022-11-20 09:35:26,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 296 states, 213 states have (on average 2.572769953051643) internal successors, (548), 295 states have internal predecessors, (548), 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 09:35:26,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 548 transitions. [2022-11-20 09:35:26,582 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 548 transitions. Word has length 2 [2022-11-20 09:35:26,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:35:26,583 INFO L495 AbstractCegarLoop]: Abstraction has 296 states and 548 transitions. [2022-11-20 09:35:26,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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 09:35:26,583 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 548 transitions. [2022-11-20 09:35:26,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-20 09:35:26,584 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:35:26,584 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-20 09:35:26,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 09:35:26,584 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2022-11-20 09:35:26,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:35:26,585 INFO L85 PathProgramCache]: Analyzing trace with hash 31829, now seen corresponding path program 1 times [2022-11-20 09:35:26,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:35:26,585 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308853735] [2022-11-20 09:35:26,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:35:26,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:35:26,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:35:26,814 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 09:35:26,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:35:26,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308853735] [2022-11-20 09:35:26,818 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1308853735] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:35:26,818 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:35:26,819 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-20 09:35:26,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770827263] [2022-11-20 09:35:26,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:35:26,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 09:35:26,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:35:26,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 09:35:26,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 09:35:26,821 INFO L87 Difference]: Start difference. First operand 296 states and 548 transitions. Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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 09:35:27,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:35:27,538 INFO L93 Difference]: Finished difference Result 296 states and 547 transitions. [2022-11-20 09:35:27,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 09:35:27,539 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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 2 [2022-11-20 09:35:27,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:35:27,541 INFO L225 Difference]: With dead ends: 296 [2022-11-20 09:35:27,541 INFO L226 Difference]: Without dead ends: 296 [2022-11-20 09:35:27,541 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 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 09:35:27,542 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-20 09:35:27,542 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 6 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-20 09:35:27,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2022-11-20 09:35:27,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 296. [2022-11-20 09:35:27,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 296 states, 213 states have (on average 2.568075117370892) internal successors, (547), 295 states have internal predecessors, (547), 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 09:35:27,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 547 transitions. [2022-11-20 09:35:27,554 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 547 transitions. Word has length 2 [2022-11-20 09:35:27,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:35:27,554 INFO L495 AbstractCegarLoop]: Abstraction has 296 states and 547 transitions. [2022-11-20 09:35:27,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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 09:35:27,555 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 547 transitions. [2022-11-20 09:35:27,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-20 09:35:27,555 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:35:27,555 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-20 09:35:27,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 09:35:27,556 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr35REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2022-11-20 09:35:27,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:35:27,556 INFO L85 PathProgramCache]: Analyzing trace with hash 988142, now seen corresponding path program 1 times [2022-11-20 09:35:27,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:35:27,557 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469680011] [2022-11-20 09:35:27,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:35:27,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:35:27,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:35:27,715 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:35:27,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:35:27,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469680011] [2022-11-20 09:35:27,715 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1469680011] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:35:27,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2012606481] [2022-11-20 09:35:27,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:35:27,716 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:35:27,716 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc8d27f3-3ac1-4610-b946-1d253be63784/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:35:27,719 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc8d27f3-3ac1-4610-b946-1d253be63784/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:35:27,755 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc8d27f3-3ac1-4610-b946-1d253be63784/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 09:35:27,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:35:27,964 INFO L263 TraceCheckSpWp]: Trace formula consists of 445 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 09:35:27,969 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:35:28,039 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:35:28,039 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:35:28,057 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:35:28,057 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2012606481] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 09:35:28,057 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 09:35:28,057 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2022-11-20 09:35:28,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663422068] [2022-11-20 09:35:28,058 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 09:35:28,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 09:35:28,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:35:28,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 09:35:28,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-20 09:35:28,059 INFO L87 Difference]: Start difference. First operand 296 states and 547 transitions. Second operand has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 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 09:35:29,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:35:29,398 INFO L93 Difference]: Finished difference Result 301 states and 553 transitions. [2022-11-20 09:35:29,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 09:35:29,398 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 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 3 [2022-11-20 09:35:29,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:35:29,400 INFO L225 Difference]: With dead ends: 301 [2022-11-20 09:35:29,400 INFO L226 Difference]: Without dead ends: 301 [2022-11-20 09:35:29,400 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-20 09:35:29,401 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 3 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-20 09:35:29,401 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 24 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-20 09:35:29,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2022-11-20 09:35:29,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 299. [2022-11-20 09:35:29,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 299 states, 216 states have (on average 2.560185185185185) internal successors, (553), 298 states have internal predecessors, (553), 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 09:35:29,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 553 transitions. [2022-11-20 09:35:29,412 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 553 transitions. Word has length 3 [2022-11-20 09:35:29,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:35:29,412 INFO L495 AbstractCegarLoop]: Abstraction has 299 states and 553 transitions. [2022-11-20 09:35:29,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 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 09:35:29,413 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 553 transitions. [2022-11-20 09:35:29,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-20 09:35:29,413 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:35:29,413 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-20 09:35:29,439 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc8d27f3-3ac1-4610-b946-1d253be63784/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-20 09:35:29,613 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc8d27f3-3ac1-4610-b946-1d253be63784/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:35:29,614 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2022-11-20 09:35:29,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:35:29,614 INFO L85 PathProgramCache]: Analyzing trace with hash 988117, now seen corresponding path program 1 times [2022-11-20 09:35:29,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:35:29,615 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431131986] [2022-11-20 09:35:29,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:35:29,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:35:29,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:35:30,059 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:35:30,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:35:30,072 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431131986] [2022-11-20 09:35:30,072 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1431131986] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:35:30,072 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [108369587] [2022-11-20 09:35:30,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:35:30,073 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:35:30,073 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc8d27f3-3ac1-4610-b946-1d253be63784/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:35:30,075 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc8d27f3-3ac1-4610-b946-1d253be63784/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:35:30,119 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc8d27f3-3ac1-4610-b946-1d253be63784/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 09:35:30,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:35:30,299 INFO L263 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 27 conjunts are in the unsatisfiable core [2022-11-20 09:35:30,301 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:35:30,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:35:30,416 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:35:30,417 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:35:30,425 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 19 [2022-11-20 09:35:30,478 INFO L321 Elim1Store]: treesize reduction 60, result has 24.1 percent of original size [2022-11-20 09:35:30,479 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 9 case distinctions, treesize of input 43 treesize of output 49 [2022-11-20 09:35:30,544 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:35:30,544 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:35:35,002 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:35:35,002 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [108369587] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 09:35:35,002 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 09:35:35,002 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 6 [2022-11-20 09:35:35,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931728587] [2022-11-20 09:35:35,003 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 09:35:35,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 09:35:35,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:35:35,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 09:35:35,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-11-20 09:35:35,004 INFO L87 Difference]: Start difference. First operand 299 states and 553 transitions. Second operand has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 7 states have internal predecessors, (9), 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 09:35:36,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:35:36,231 INFO L93 Difference]: Finished difference Result 299 states and 551 transitions. [2022-11-20 09:35:36,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 09:35:36,231 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 7 states have internal predecessors, (9), 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 3 [2022-11-20 09:35:36,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:35:36,233 INFO L225 Difference]: With dead ends: 299 [2022-11-20 09:35:36,233 INFO L226 Difference]: Without dead ends: 299 [2022-11-20 09:35:36,234 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2022-11-20 09:35:36,234 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 0 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 87 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-20 09:35:36,236 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 9 Invalid, 208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 121 Invalid, 0 Unknown, 87 Unchecked, 1.2s Time] [2022-11-20 09:35:36,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2022-11-20 09:35:36,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 299. [2022-11-20 09:35:36,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 299 states, 216 states have (on average 2.550925925925926) internal successors, (551), 298 states have internal predecessors, (551), 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 09:35:36,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 551 transitions. [2022-11-20 09:35:36,248 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 551 transitions. Word has length 3 [2022-11-20 09:35:36,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:35:36,248 INFO L495 AbstractCegarLoop]: Abstraction has 299 states and 551 transitions. [2022-11-20 09:35:36,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 7 states have internal predecessors, (9), 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 09:35:36,249 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 551 transitions. [2022-11-20 09:35:36,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-20 09:35:36,249 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:35:36,249 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1] [2022-11-20 09:35:36,259 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc8d27f3-3ac1-4610-b946-1d253be63784/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-20 09:35:36,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc8d27f3-3ac1-4610-b946-1d253be63784/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-20 09:35:36,455 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2022-11-20 09:35:36,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:35:36,456 INFO L85 PathProgramCache]: Analyzing trace with hash 949625813, now seen corresponding path program 2 times [2022-11-20 09:35:36,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:35:36,456 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164236899] [2022-11-20 09:35:36,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:35:36,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:35:36,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:35:38,276 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:35:38,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:35:38,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164236899] [2022-11-20 09:35:38,277 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1164236899] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:35:38,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [220240654] [2022-11-20 09:35:38,277 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 09:35:38,278 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:35:38,278 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc8d27f3-3ac1-4610-b946-1d253be63784/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:35:38,284 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc8d27f3-3ac1-4610-b946-1d253be63784/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:35:38,295 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc8d27f3-3ac1-4610-b946-1d253be63784/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 09:35:38,607 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 09:35:38,607 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 09:35:38,612 INFO L263 TraceCheckSpWp]: Trace formula consists of 647 conjuncts, 55 conjunts are in the unsatisfiable core [2022-11-20 09:35:38,617 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:35:38,690 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:35:38,692 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:35:38,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:35:38,694 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 19 [2022-11-20 09:35:38,738 INFO L321 Elim1Store]: treesize reduction 60, result has 24.1 percent of original size [2022-11-20 09:35:38,739 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 9 case distinctions, treesize of input 43 treesize of output 49 [2022-11-20 09:35:38,809 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:35:38,810 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:35:38,811 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:35:38,812 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 19 [2022-11-20 09:35:38,890 INFO L321 Elim1Store]: treesize reduction 98, result has 24.6 percent of original size [2022-11-20 09:35:38,891 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 48 treesize of output 65 [2022-11-20 09:35:39,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:35:39,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:35:39,003 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:35:39,004 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 19 [2022-11-20 09:35:39,115 INFO L321 Elim1Store]: treesize reduction 136, result has 24.9 percent of original size [2022-11-20 09:35:39,115 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 12 case distinctions, treesize of input 53 treesize of output 81 [2022-11-20 09:35:39,192 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:35:39,192 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:36:02,292 WARN L233 SmtUtils]: Spent 8.05s on a formula simplification that was a NOOP. DAG size: 89 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 09:36:02,294 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 1 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:36:02,294 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [220240654] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 09:36:02,294 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 09:36:02,294 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 12 [2022-11-20 09:36:02,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677141946] [2022-11-20 09:36:02,294 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 09:36:02,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-20 09:36:02,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:36:02,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-20 09:36:02,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=122, Unknown=1, NotChecked=0, Total=182 [2022-11-20 09:36:02,296 INFO L87 Difference]: Start difference. First operand 299 states and 551 transitions. Second operand has 14 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 13 states have internal predecessors, (15), 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 09:36:15,276 WARN L233 SmtUtils]: Spent 8.84s on a formula simplification. DAG size of input: 63 DAG size of output: 59 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 09:36:15,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:36:15,450 INFO L93 Difference]: Finished difference Result 302 states and 574 transitions. [2022-11-20 09:36:15,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 09:36:15,455 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 13 states have internal predecessors, (15), 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 5 [2022-11-20 09:36:15,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:36:15,458 INFO L225 Difference]: With dead ends: 302 [2022-11-20 09:36:15,458 INFO L226 Difference]: Without dead ends: 302 [2022-11-20 09:36:15,458 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 35.3s TimeCoverageRelationStatistics Valid=105, Invalid=199, Unknown=2, NotChecked=0, Total=306 [2022-11-20 09:36:15,459 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 163 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 09:36:15,459 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 6 Invalid, 305 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 142 Invalid, 0 Unknown, 163 Unchecked, 0.3s Time] [2022-11-20 09:36:15,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2022-11-20 09:36:15,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 302. [2022-11-20 09:36:15,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 302 states, 219 states have (on average 2.6210045662100456) internal successors, (574), 301 states have internal predecessors, (574), 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 09:36:15,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 574 transitions. [2022-11-20 09:36:15,471 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 574 transitions. Word has length 5 [2022-11-20 09:36:15,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:36:15,471 INFO L495 AbstractCegarLoop]: Abstraction has 302 states and 574 transitions. [2022-11-20 09:36:15,471 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 13 states have internal predecessors, (15), 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 09:36:15,472 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 574 transitions. [2022-11-20 09:36:15,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-20 09:36:15,472 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:36:15,473 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1] [2022-11-20 09:36:15,483 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc8d27f3-3ac1-4610-b946-1d253be63784/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-11-20 09:36:15,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc8d27f3-3ac1-4610-b946-1d253be63784/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-20 09:36:15,683 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr35REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2022-11-20 09:36:15,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:36:15,684 INFO L85 PathProgramCache]: Analyzing trace with hash -626369426, now seen corresponding path program 2 times [2022-11-20 09:36:15,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:36:15,684 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453830820] [2022-11-20 09:36:15,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:36:15,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:36:15,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:36:16,068 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:36:16,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:36:16,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453830820] [2022-11-20 09:36:16,069 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1453830820] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:36:16,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [546958932] [2022-11-20 09:36:16,069 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 09:36:16,069 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:36:16,070 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc8d27f3-3ac1-4610-b946-1d253be63784/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:36:16,071 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc8d27f3-3ac1-4610-b946-1d253be63784/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:36:16,094 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc8d27f3-3ac1-4610-b946-1d253be63784/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-20 09:36:16,604 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 09:36:16,605 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 09:36:16,611 INFO L263 TraceCheckSpWp]: Trace formula consists of 1006 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-20 09:36:16,612 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:36:16,633 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:36:16,633 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:36:16,701 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:36:16,702 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [546958932] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 09:36:16,702 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 09:36:16,702 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-20 09:36:16,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582686731] [2022-11-20 09:36:16,702 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 09:36:16,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-20 09:36:16,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:36:16,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-20 09:36:16,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2022-11-20 09:36:16,703 INFO L87 Difference]: Start difference. First operand 302 states and 574 transitions. Second operand has 13 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 12 states have internal predecessors, (14), 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 09:36:18,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:36:18,746 INFO L93 Difference]: Finished difference Result 307 states and 559 transitions. [2022-11-20 09:36:18,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-20 09:36:18,747 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 12 states have internal predecessors, (14), 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 6 [2022-11-20 09:36:18,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:36:18,749 INFO L225 Difference]: With dead ends: 307 [2022-11-20 09:36:18,749 INFO L226 Difference]: Without dead ends: 307 [2022-11-20 09:36:18,749 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2022-11-20 09:36:18,750 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 6 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-11-20 09:36:18,750 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 18 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-11-20 09:36:18,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2022-11-20 09:36:18,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 305. [2022-11-20 09:36:18,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 305 states, 222 states have (on average 2.518018018018018) internal successors, (559), 304 states have internal predecessors, (559), 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 09:36:18,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 559 transitions. [2022-11-20 09:36:18,759 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 559 transitions. Word has length 6 [2022-11-20 09:36:18,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:36:18,760 INFO L495 AbstractCegarLoop]: Abstraction has 305 states and 559 transitions. [2022-11-20 09:36:18,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 12 states have internal predecessors, (14), 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 09:36:18,760 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 559 transitions. [2022-11-20 09:36:18,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-20 09:36:18,760 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:36:18,760 INFO L195 NwaCegarLoop]: trace histogram [7, 1, 1] [2022-11-20 09:36:18,775 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc8d27f3-3ac1-4610-b946-1d253be63784/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-20 09:36:18,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc8d27f3-3ac1-4610-b946-1d253be63784/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:36:18,968 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2022-11-20 09:36:18,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:36:18,969 INFO L85 PathProgramCache]: Analyzing trace with hash 1461994453, now seen corresponding path program 3 times [2022-11-20 09:36:18,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:36:18,969 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504293127] [2022-11-20 09:36:18,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:36:18,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:36:19,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:36:24,979 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:36:24,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:36:24,979 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504293127] [2022-11-20 09:36:24,980 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [504293127] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:36:24,980 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [276931022] [2022-11-20 09:36:24,980 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 09:36:24,980 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:36:24,980 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc8d27f3-3ac1-4610-b946-1d253be63784/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:36:24,983 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc8d27f3-3ac1-4610-b946-1d253be63784/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:36:24,995 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc8d27f3-3ac1-4610-b946-1d253be63784/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-20 09:37:35,566 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-11-20 09:37:35,566 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 09:37:35,594 INFO L263 TraceCheckSpWp]: Trace formula consists of 1395 conjuncts, 115 conjunts are in the unsatisfiable core [2022-11-20 09:37:35,601 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:37:35,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:37:35,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:37:35,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:37:35,670 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 19 [2022-11-20 09:37:35,707 INFO L321 Elim1Store]: treesize reduction 60, result has 24.1 percent of original size [2022-11-20 09:37:35,708 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 9 case distinctions, treesize of input 43 treesize of output 49 [2022-11-20 09:37:35,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:37:35,781 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:37:35,782 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:37:35,784 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 19 [2022-11-20 09:37:35,852 INFO L321 Elim1Store]: treesize reduction 98, result has 24.6 percent of original size [2022-11-20 09:37:35,852 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 48 treesize of output 65 [2022-11-20 09:37:35,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:37:35,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:37:35,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:37:35,992 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 19 [2022-11-20 09:37:36,094 INFO L321 Elim1Store]: treesize reduction 136, result has 24.9 percent of original size [2022-11-20 09:37:36,095 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 12 case distinctions, treesize of input 53 treesize of output 81 [2022-11-20 09:37:36,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:37:36,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:37:36,236 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-20 09:37:36,237 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 23 [2022-11-20 09:37:36,312 INFO L321 Elim1Store]: treesize reduction 37, result has 49.3 percent of original size [2022-11-20 09:37:36,312 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 6 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 62 treesize of output 83 [2022-11-20 09:37:36,408 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:37:36,409 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:37:36,433 INFO L321 Elim1Store]: treesize reduction 29, result has 34.1 percent of original size [2022-11-20 09:37:36,434 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 15 treesize of output 23 [2022-11-20 09:37:36,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:37:36,529 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:37:36,569 INFO L321 Elim1Store]: treesize reduction 37, result has 41.3 percent of original size [2022-11-20 09:37:36,570 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 20 treesize of output 42 [2022-11-20 09:37:36,620 INFO L321 Elim1Store]: treesize reduction 44, result has 30.2 percent of original size [2022-11-20 09:37:36,621 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 33 treesize of output 43 [2022-11-20 09:37:36,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:37:36,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:37:36,791 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:37:36,808 INFO L321 Elim1Store]: treesize reduction 39, result has 11.4 percent of original size [2022-11-20 09:37:36,809 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 38 treesize of output 43 [2022-11-20 09:37:36,904 INFO L321 Elim1Store]: treesize reduction 106, result has 23.2 percent of original size [2022-11-20 09:37:36,904 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 14 case distinctions, treesize of input 71 treesize of output 86 [2022-11-20 09:37:37,053 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:37:37,054 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:37:39,425 INFO L321 Elim1Store]: treesize reduction 56, result has 30.9 percent of original size [2022-11-20 09:37:39,426 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 426 treesize of output 432 [2022-11-20 09:37:43,884 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:37:43,884 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [276931022] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 09:37:43,885 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 09:37:43,885 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 24 [2022-11-20 09:37:43,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866361923] [2022-11-20 09:37:43,885 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 09:37:43,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-20 09:37:43,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:37:43,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-20 09:37:43,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=521, Unknown=0, NotChecked=0, Total=650 [2022-11-20 09:37:43,886 INFO L87 Difference]: Start difference. First operand 305 states and 559 transitions. Second operand has 26 states, 25 states have (on average 1.08) internal successors, (27), 25 states have internal predecessors, (27), 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 09:37:48,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:37:48,134 INFO L93 Difference]: Finished difference Result 309 states and 589 transitions. [2022-11-20 09:37:48,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-20 09:37:48,135 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 1.08) internal successors, (27), 25 states have internal predecessors, (27), 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 9 [2022-11-20 09:37:48,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:37:48,137 INFO L225 Difference]: With dead ends: 309 [2022-11-20 09:37:48,137 INFO L226 Difference]: Without dead ends: 309 [2022-11-20 09:37:48,138 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 8.3s TimeCoverageRelationStatistics Valid=300, Invalid=1106, Unknown=0, NotChecked=0, Total=1406 [2022-11-20 09:37:48,138 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 0 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 491 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 359 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 09:37:48,138 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 21 Invalid, 491 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 132 Invalid, 0 Unknown, 359 Unchecked, 0.3s Time] [2022-11-20 09:37:48,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2022-11-20 09:37:48,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 309. [2022-11-20 09:37:48,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 309 states, 226 states have (on average 2.606194690265487) internal successors, (589), 308 states have internal predecessors, (589), 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 09:37:48,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 589 transitions. [2022-11-20 09:37:48,147 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 589 transitions. Word has length 9 [2022-11-20 09:37:48,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:37:48,148 INFO L495 AbstractCegarLoop]: Abstraction has 309 states and 589 transitions. [2022-11-20 09:37:48,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 1.08) internal successors, (27), 25 states have internal predecessors, (27), 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 09:37:48,148 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 589 transitions. [2022-11-20 09:37:48,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-20 09:37:48,149 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:37:48,149 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1] [2022-11-20 09:37:48,195 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc8d27f3-3ac1-4610-b946-1d253be63784/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-20 09:37:48,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc8d27f3-3ac1-4610-b946-1d253be63784/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:37:48,375 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr35REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2022-11-20 09:37:48,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:37:48,376 INFO L85 PathProgramCache]: Analyzing trace with hash -985191314, now seen corresponding path program 3 times [2022-11-20 09:37:48,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:37:48,376 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263563330] [2022-11-20 09:37:48,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:37:48,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:37:50,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:37:52,738 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 45 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:37:52,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:37:52,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263563330] [2022-11-20 09:37:52,739 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263563330] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:37:52,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1007418279] [2022-11-20 09:37:52,739 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 09:37:52,739 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:37:52,739 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc8d27f3-3ac1-4610-b946-1d253be63784/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:37:52,740 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc8d27f3-3ac1-4610-b946-1d253be63784/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:37:52,759 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc8d27f3-3ac1-4610-b946-1d253be63784/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-20 09:37:53,445 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-20 09:37:53,445 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 09:37:53,450 INFO L263 TraceCheckSpWp]: Trace formula consists of 632 conjuncts, 38 conjunts are in the unsatisfiable core [2022-11-20 09:37:53,453 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:37:53,522 INFO L321 Elim1Store]: treesize reduction 40, result has 27.3 percent of original size [2022-11-20 09:37:53,522 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 2 case distinctions, treesize of input 24 treesize of output 32 [2022-11-20 09:37:53,582 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-11-20 09:37:53,582 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 09:37:53,583 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1007418279] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:37:53,583 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 09:37:53,583 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [11] total 13 [2022-11-20 09:37:53,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197556400] [2022-11-20 09:37:53,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:37:53,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 09:37:53,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:37:53,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 09:37:53,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=126, Unknown=0, NotChecked=0, Total=210 [2022-11-20 09:37:53,584 INFO L87 Difference]: Start difference. First operand 309 states and 589 transitions. Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 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 09:37:53,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:37:53,679 INFO L93 Difference]: Finished difference Result 308 states and 584 transitions. [2022-11-20 09:37:53,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 09:37:53,679 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 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 12 [2022-11-20 09:37:53,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:37:53,681 INFO L225 Difference]: With dead ends: 308 [2022-11-20 09:37:53,681 INFO L226 Difference]: Without dead ends: 308 [2022-11-20 09:37:53,681 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=84, Invalid=126, Unknown=0, NotChecked=0, Total=210 [2022-11-20 09:37:53,682 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 43 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 09:37:53,682 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 6 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 43 Unchecked, 0.1s Time] [2022-11-20 09:37:53,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2022-11-20 09:37:53,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 308. [2022-11-20 09:37:53,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 308 states, 226 states have (on average 2.584070796460177) internal successors, (584), 307 states have internal predecessors, (584), 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 09:37:53,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 584 transitions. [2022-11-20 09:37:53,691 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 584 transitions. Word has length 12 [2022-11-20 09:37:53,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:37:53,691 INFO L495 AbstractCegarLoop]: Abstraction has 308 states and 584 transitions. [2022-11-20 09:37:53,692 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 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 09:37:53,692 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 584 transitions. [2022-11-20 09:37:53,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-20 09:37:53,692 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:37:53,692 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1] [2022-11-20 09:37:53,712 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc8d27f3-3ac1-4610-b946-1d253be63784/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-11-20 09:37:53,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc8d27f3-3ac1-4610-b946-1d253be63784/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-20 09:37:53,899 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2022-11-20 09:37:53,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:37:53,900 INFO L85 PathProgramCache]: Analyzing trace with hash -985191324, now seen corresponding path program 1 times [2022-11-20 09:37:53,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:37:53,900 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914092586] [2022-11-20 09:37:53,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:37:53,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:37:54,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:37:56,333 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 45 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:37:56,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:37:56,333 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914092586] [2022-11-20 09:37:56,333 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1914092586] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:37:56,333 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1782427938] [2022-11-20 09:37:56,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:37:56,334 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:37:56,334 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc8d27f3-3ac1-4610-b946-1d253be63784/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:37:56,339 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc8d27f3-3ac1-4610-b946-1d253be63784/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:37:56,363 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc8d27f3-3ac1-4610-b946-1d253be63784/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-20 09:37:57,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:37:57,345 INFO L263 TraceCheckSpWp]: Trace formula consists of 1974 conjuncts, 39 conjunts are in the unsatisfiable core [2022-11-20 09:37:57,357 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:37:57,562 INFO L321 Elim1Store]: treesize reduction 44, result has 30.2 percent of original size [2022-11-20 09:37:57,562 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 33 treesize of output 43 [2022-11-20 09:37:57,599 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 45 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:37:57,600 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:37:57,989 INFO L321 Elim1Store]: treesize reduction 5, result has 95.9 percent of original size [2022-11-20 09:37:57,990 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 836 treesize of output 909 [2022-11-20 09:37:58,099 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 820 treesize of output 816 [2022-11-20 09:37:59,978 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 45 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:37:59,978 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1782427938] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 09:37:59,978 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 09:37:59,979 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 23 [2022-11-20 09:37:59,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505934026] [2022-11-20 09:37:59,979 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 09:37:59,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-20 09:37:59,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:37:59,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-20 09:37:59,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=194, Invalid=406, Unknown=0, NotChecked=0, Total=600 [2022-11-20 09:37:59,981 INFO L87 Difference]: Start difference. First operand 308 states and 584 transitions. Second operand has 25 states, 24 states have (on average 1.0833333333333333) internal successors, (26), 24 states have internal predecessors, (26), 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 09:38:01,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:38:01,523 INFO L93 Difference]: Finished difference Result 306 states and 577 transitions. [2022-11-20 09:38:01,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-20 09:38:01,524 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 1.0833333333333333) internal successors, (26), 24 states have internal predecessors, (26), 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 12 [2022-11-20 09:38:01,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:38:01,526 INFO L225 Difference]: With dead ends: 306 [2022-11-20 09:38:01,526 INFO L226 Difference]: Without dead ends: 306 [2022-11-20 09:38:01,526 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 0 SyntacticMatches, 10 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 552 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=399, Invalid=791, Unknown=0, NotChecked=0, Total=1190 [2022-11-20 09:38:01,527 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 398 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 398 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 23 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-20 09:38:01,527 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [398 Valid, 0 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 96 Invalid, 0 Unknown, 23 Unchecked, 1.2s Time] [2022-11-20 09:38:01,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2022-11-20 09:38:01,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 302. [2022-11-20 09:38:01,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 302 states, 222 states have (on average 2.490990990990991) internal successors, (553), 301 states have internal predecessors, (553), 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 09:38:01,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 553 transitions. [2022-11-20 09:38:01,538 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 553 transitions. Word has length 12 [2022-11-20 09:38:01,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:38:01,538 INFO L495 AbstractCegarLoop]: Abstraction has 302 states and 553 transitions. [2022-11-20 09:38:01,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 1.0833333333333333) internal successors, (26), 24 states have internal predecessors, (26), 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 09:38:01,539 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 553 transitions. [2022-11-20 09:38:01,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-20 09:38:01,540 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:38:01,540 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1] [2022-11-20 09:38:01,555 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc8d27f3-3ac1-4610-b946-1d253be63784/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-20 09:38:01,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc8d27f3-3ac1-4610-b946-1d253be63784/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-20 09:38:01,751 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2022-11-20 09:38:01,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:38:01,752 INFO L85 PathProgramCache]: Analyzing trace with hash -985191320, now seen corresponding path program 1 times [2022-11-20 09:38:01,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:38:01,752 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396837517] [2022-11-20 09:38:01,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:38:01,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:38:04,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:38:51,537 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:38:51,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:38:51,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396837517] [2022-11-20 09:38:51,537 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [396837517] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:38:51,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1826335225] [2022-11-20 09:38:51,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:38:51,538 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:38:51,538 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc8d27f3-3ac1-4610-b946-1d253be63784/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:38:51,539 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc8d27f3-3ac1-4610-b946-1d253be63784/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:38:51,541 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc8d27f3-3ac1-4610-b946-1d253be63784/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-20 09:38:54,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:38:54,033 INFO L263 TraceCheckSpWp]: Trace formula consists of 1998 conjuncts, 538 conjunts are in the unsatisfiable core [2022-11-20 09:38:54,062 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:38:54,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:38:54,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:38:54,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:38:54,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:38:54,111 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:38:54,112 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 24 [2022-11-20 09:38:54,120 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 13 treesize of output 12 [2022-11-20 09:38:54,172 INFO L321 Elim1Store]: treesize reduction 114, result has 24.5 percent of original size [2022-11-20 09:38:54,172 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 9 case distinctions, treesize of input 88 treesize of output 94 [2022-11-20 09:38:54,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:38:54,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:38:54,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:38:54,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:38:54,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:38:54,310 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 47 [2022-11-20 09:38:54,319 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 37 treesize of output 34 [2022-11-20 09:38:54,402 INFO L321 Elim1Store]: treesize reduction 233, result has 27.0 percent of original size [2022-11-20 09:38:54,402 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 102 treesize of output 146 [2022-11-20 09:38:54,619 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:38:54,620 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:38:54,625 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:38:54,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:38:54,628 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:38:54,629 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 139 treesize of output 110 [2022-11-20 09:38:54,642 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 100 treesize of output 67 [2022-11-20 09:38:54,826 INFO L321 Elim1Store]: treesize reduction 408, result has 27.8 percent of original size [2022-11-20 09:38:54,826 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 6 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 121 treesize of output 223 [2022-11-20 09:38:55,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:38:55,144 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:38:55,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:38:55,152 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:38:55,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:38:55,157 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 262 treesize of output 213 [2022-11-20 09:38:55,176 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 203 treesize of output 112 [2022-11-20 09:38:55,518 INFO L321 Elim1Store]: treesize reduction 583, result has 28.1 percent of original size [2022-11-20 09:38:55,519 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 8 select indices, 8 select index equivalence classes, 15 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 21 case distinctions, treesize of input 140 treesize of output 300 [2022-11-20 09:38:56,150 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:38:56,152 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:38:56,159 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:38:56,161 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:38:56,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:38:56,167 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 445 treesize of output 366 [2022-11-20 09:38:56,199 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 356 treesize of output 172 [2022-11-20 09:38:56,691 INFO L321 Elim1Store]: treesize reduction 758, result has 28.3 percent of original size [2022-11-20 09:38:56,692 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 10 select indices, 10 select index equivalence classes, 28 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 27 case distinctions, treesize of input 159 treesize of output 377 [2022-11-20 09:38:57,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:38:57,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:38:57,597 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:38:57,599 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:38:57,601 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:38:57,602 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 664 treesize of output 549 [2022-11-20 09:38:57,635 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 539 treesize of output 241 [2022-11-20 09:38:58,339 INFO L321 Elim1Store]: treesize reduction 933, result has 28.4 percent of original size [2022-11-20 09:38:58,340 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 12 select indices, 12 select index equivalence classes, 45 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 33 case distinctions, treesize of input 178 treesize of output 454 [2022-11-20 09:38:59,616 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:38:59,618 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:38:59,625 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:38:59,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:38:59,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:38:59,629 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 8 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 931 treesize of output 772 [2022-11-20 09:38:59,694 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 21 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 762 treesize of output 322 [2022-11-20 09:39:00,551 INFO L321 Elim1Store]: treesize reduction 1108, result has 28.5 percent of original size [2022-11-20 09:39:00,552 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 14 select indices, 14 select index equivalence classes, 66 disjoint index pairs (out of 91 index pairs), introduced 14 new quantified variables, introduced 39 case distinctions, treesize of input 197 treesize of output 531 [2022-11-20 09:39:03,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:39:03,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:39:03,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:39:03,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:39:03,154 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-20 09:39:03,155 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 8 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 1243 treesize of output 1039 [2022-11-20 09:39:03,269 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 28 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 1025 treesize of output 415 [2022-11-20 09:39:04,451 INFO L321 Elim1Store]: treesize reduction 1280, result has 28.7 percent of original size [2022-11-20 09:39:04,452 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 16 select indices, 16 select index equivalence classes, 91 disjoint index pairs (out of 120 index pairs), introduced 16 new quantified variables, introduced 45 case distinctions, treesize of input 238 treesize of output 633 [2022-11-20 09:39:10,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:39:10,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:39:10,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:39:10,394 INFO L321 Elim1Store]: treesize reduction 20, result has 63.6 percent of original size [2022-11-20 09:39:10,395 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 9 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 1640 treesize of output 1427 [2022-11-20 09:39:10,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:39:10,525 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2022-11-20 09:39:10,634 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 8 select indices, 8 select index equivalence classes, 36 disjoint index pairs (out of 28 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 1321 treesize of output 507 [2022-11-20 09:39:11,821 INFO L321 Elim1Store]: treesize reduction 1210, result has 18.2 percent of original size [2022-11-20 09:39:11,822 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 17 select indices, 17 select index equivalence classes, 119 disjoint index pairs (out of 136 index pairs), introduced 17 new quantified variables, introduced 34 case distinctions, treesize of input 197 treesize of output 362 [2022-11-20 09:39:12,094 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 34 [2022-11-20 09:39:12,183 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 17 treesize of output 10 [2022-11-20 09:39:12,292 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 33 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 157 treesize of output 35 [2022-11-20 09:39:12,316 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 17 treesize of output 10 [2022-11-20 09:39:12,545 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 9 select indices, 9 select index equivalence classes, 36 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 1437 treesize of output 457 [2022-11-20 09:40:00,543 WARN L233 SmtUtils]: Spent 8.03s on a formula simplification. DAG size of input: 601 DAG size of output: 601 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 09:40:03,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:40:03,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:40:03,026 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:40:03,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:40:03,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:40:03,032 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 2552 treesize of output 2264 [2022-11-20 09:40:03,291 INFO L217 Elim1Store]: Index analysis took 121 ms [2022-11-20 09:41:14,288 WARN L233 SmtUtils]: Spent 1.18m on a formula simplification. DAG size of input: 2826 DAG size of output: 384 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-11-20 09:41:14,289 INFO L321 Elim1Store]: treesize reduction 8082, result has 9.8 percent of original size [2022-11-20 09:41:14,290 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 36 select indices, 36 select index equivalence classes, 0 disjoint index pairs (out of 630 index pairs), introduced 36 new quantified variables, introduced 666 case distinctions, treesize of input 2284 treesize of output 3019 [2022-11-20 09:41:14,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:41:14,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:41:15,119 INFO L321 Elim1Store]: treesize reduction 4, result has 73.3 percent of original size [2022-11-20 09:41:15,120 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 2220 treesize of output 2218 [2022-11-20 09:41:15,257 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 9 select indices, 9 select index equivalence classes, 55 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 2420 treesize of output 1428 [2022-11-20 09:41:46,966 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:41:46,967 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:41:47,309 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 09:41:47,309 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 94 treesize of output 93 [2022-11-20 09:41:47,944 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 09:41:47,945 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 381 treesize of output 364 [2022-11-20 09:41:47,979 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 09:41:47,979 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 357 treesize of output 326 [2022-11-20 09:41:48,008 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:41:48,009 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:41:48,010 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:41:48,026 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 30 treesize of output 28 [2022-11-20 09:42:04,582 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 09:42:04,583 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 3248 treesize of output 3063 [2022-11-20 09:42:04,625 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 09:42:04,625 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 3056 treesize of output 2745 [2022-11-20 09:42:17,510 WARN L233 SmtUtils]: Spent 8.26s on a formula simplification that was a NOOP. DAG size: 235 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 09:42:17,802 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 09:42:17,803 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 12958 treesize of output 11429 [2022-11-20 09:42:17,858 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 09:42:17,859 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 11422 treesize of output 10151