./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/memsafety/test-0232-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version e04fb08f 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_f0f28bad-eeb0-418e-bca1-6d1e01a5868a/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f28bad-eeb0-418e-bca1-6d1e01a5868a/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f28bad-eeb0-418e-bca1-6d1e01a5868a/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f28bad-eeb0-418e-bca1-6d1e01a5868a/bin/uautomizer-tPACEb0tL8/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety/test-0232-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f28bad-eeb0-418e-bca1-6d1e01a5868a/bin/uautomizer-tPACEb0tL8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f28bad-eeb0-418e-bca1-6d1e01a5868a/bin/uautomizer-tPACEb0tL8 --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 1228d922512a0e9364273220ccc1e5afc3bfb7c0e22f10439a1ba902492e71b2 --- 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-e04fb08 [2022-11-16 10:55:18,729 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 10:55:18,732 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 10:55:18,773 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 10:55:18,773 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 10:55:18,779 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 10:55:18,784 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 10:55:18,788 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 10:55:18,792 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 10:55:18,794 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 10:55:18,796 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 10:55:18,798 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 10:55:18,800 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 10:55:18,804 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 10:55:18,806 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 10:55:18,809 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 10:55:18,811 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 10:55:18,817 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 10:55:18,820 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 10:55:18,822 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 10:55:18,829 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 10:55:18,831 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 10:55:18,833 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 10:55:18,836 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 10:55:18,840 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 10:55:18,845 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 10:55:18,846 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 10:55:18,847 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 10:55:18,849 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 10:55:18,850 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 10:55:18,852 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 10:55:18,853 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 10:55:18,855 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 10:55:18,858 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 10:55:18,861 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 10:55:18,862 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 10:55:18,863 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 10:55:18,863 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 10:55:18,863 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 10:55:18,864 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 10:55:18,865 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 10:55:18,866 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f28bad-eeb0-418e-bca1-6d1e01a5868a/bin/uautomizer-tPACEb0tL8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-11-16 10:55:18,916 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 10:55:18,917 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 10:55:18,917 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 10:55:18,918 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 10:55:18,919 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 10:55:18,919 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 10:55:18,920 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 10:55:18,921 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 10:55:18,921 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 10:55:18,921 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 10:55:18,923 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 10:55:18,923 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 10:55:18,923 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 10:55:18,923 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 10:55:18,924 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 10:55:18,924 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-16 10:55:18,924 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-16 10:55:18,939 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-16 10:55:18,940 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 10:55:18,940 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-16 10:55:18,940 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 10:55:18,941 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 10:55:18,941 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 10:55:18,941 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 10:55:18,942 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 10:55:18,942 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 10:55:18,944 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 10:55:18,944 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 10:55:18,945 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 10:55:18,945 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 10:55:18,945 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_f0f28bad-eeb0-418e-bca1-6d1e01a5868a/bin/uautomizer-tPACEb0tL8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f28bad-eeb0-418e-bca1-6d1e01a5868a/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1228d922512a0e9364273220ccc1e5afc3bfb7c0e22f10439a1ba902492e71b2 [2022-11-16 10:55:19,255 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 10:55:19,285 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 10:55:19,288 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 10:55:19,290 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 10:55:19,291 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 10:55:19,292 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f28bad-eeb0-418e-bca1-6d1e01a5868a/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/memsafety/test-0232-1.i [2022-11-16 10:55:19,380 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f28bad-eeb0-418e-bca1-6d1e01a5868a/bin/uautomizer-tPACEb0tL8/data/f981344f6/79a5ba2fd54c44a788a266b93383e4b6/FLAG18edd5925 [2022-11-16 10:55:20,093 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 10:55:20,094 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f28bad-eeb0-418e-bca1-6d1e01a5868a/sv-benchmarks/c/memsafety/test-0232-1.i [2022-11-16 10:55:20,119 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f28bad-eeb0-418e-bca1-6d1e01a5868a/bin/uautomizer-tPACEb0tL8/data/f981344f6/79a5ba2fd54c44a788a266b93383e4b6/FLAG18edd5925 [2022-11-16 10:55:20,334 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f28bad-eeb0-418e-bca1-6d1e01a5868a/bin/uautomizer-tPACEb0tL8/data/f981344f6/79a5ba2fd54c44a788a266b93383e4b6 [2022-11-16 10:55:20,339 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 10:55:20,341 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 10:55:20,345 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 10:55:20,345 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 10:55:20,349 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 10:55:20,350 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 10:55:20" (1/1) ... [2022-11-16 10:55:20,353 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@348a9d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:55:20, skipping insertion in model container [2022-11-16 10:55:20,353 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 10:55:20" (1/1) ... [2022-11-16 10:55:20,362 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 10:55:20,431 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 10:55:20,940 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 10:55:20,956 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 10:55:21,015 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 10:55:21,049 INFO L208 MainTranslator]: Completed translation [2022-11-16 10:55:21,050 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:55:21 WrapperNode [2022-11-16 10:55:21,050 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 10:55:21,051 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 10:55:21,051 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 10:55:21,051 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 10:55:21,062 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:55:21" (1/1) ... [2022-11-16 10:55:21,078 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:55:21" (1/1) ... [2022-11-16 10:55:21,103 INFO L138 Inliner]: procedures = 126, calls = 32, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 81 [2022-11-16 10:55:21,104 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 10:55:21,105 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 10:55:21,105 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 10:55:21,105 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 10:55:21,116 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:55:21" (1/1) ... [2022-11-16 10:55:21,117 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:55:21" (1/1) ... [2022-11-16 10:55:21,120 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:55:21" (1/1) ... [2022-11-16 10:55:21,121 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:55:21" (1/1) ... [2022-11-16 10:55:21,137 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:55:21" (1/1) ... [2022-11-16 10:55:21,141 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:55:21" (1/1) ... [2022-11-16 10:55:21,143 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:55:21" (1/1) ... [2022-11-16 10:55:21,144 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:55:21" (1/1) ... [2022-11-16 10:55:21,163 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 10:55:21,164 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 10:55:21,164 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 10:55:21,165 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 10:55:21,166 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:55:21" (1/1) ... [2022-11-16 10:55:21,184 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 10:55:21,199 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f28bad-eeb0-418e-bca1-6d1e01a5868a/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 10:55:21,220 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f28bad-eeb0-418e-bca1-6d1e01a5868a/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 10:55:21,258 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f28bad-eeb0-418e-bca1-6d1e01a5868a/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 10:55:21,302 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-16 10:55:21,302 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 10:55:21,303 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 10:55:21,303 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-16 10:55:21,303 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-16 10:55:21,303 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 10:55:21,304 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-16 10:55:21,304 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 10:55:21,304 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 10:55:21,304 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 10:55:21,512 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 10:55:21,514 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 10:55:21,850 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 10:55:21,857 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 10:55:21,858 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-16 10:55:21,860 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 10:55:21 BoogieIcfgContainer [2022-11-16 10:55:21,861 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 10:55:21,863 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 10:55:21,864 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 10:55:21,881 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 10:55:21,881 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 10:55:20" (1/3) ... [2022-11-16 10:55:21,882 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36549bb9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 10:55:21, skipping insertion in model container [2022-11-16 10:55:21,882 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:55:21" (2/3) ... [2022-11-16 10:55:21,883 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36549bb9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 10:55:21, skipping insertion in model container [2022-11-16 10:55:21,883 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 10:55:21" (3/3) ... [2022-11-16 10:55:21,885 INFO L112 eAbstractionObserver]: Analyzing ICFG test-0232-1.i [2022-11-16 10:55:21,909 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 10:55:21,909 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 41 error locations. [2022-11-16 10:55:22,009 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 10:55:22,022 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;@6a909140, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 10:55:22,023 INFO L358 AbstractCegarLoop]: Starting to check reachability of 41 error locations. [2022-11-16 10:55:22,029 INFO L276 IsEmpty]: Start isEmpty. Operand has 82 states, 40 states have (on average 2.175) internal successors, (87), 81 states have internal predecessors, (87), 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) [2022-11-16 10:55:22,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-16 10:55:22,037 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 10:55:22,039 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-16 10:55:22,040 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-16 10:55:22,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:55:22,050 INFO L85 PathProgramCache]: Analyzing trace with hash 925637, now seen corresponding path program 1 times [2022-11-16 10:55:22,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:55:22,064 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753282950] [2022-11-16 10:55:22,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:55:22,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:55:22,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:55:22,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 10:55:22,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:55:22,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753282950] [2022-11-16 10:55:22,511 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753282950] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:55:22,511 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 10:55:22,511 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 10:55:22,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62962721] [2022-11-16 10:55:22,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:55:22,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 10:55:22,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:55:22,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 10:55:22,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 10:55:22,552 INFO L87 Difference]: Start difference. First operand has 82 states, 40 states have (on average 2.175) internal successors, (87), 81 states have internal predecessors, (87), 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 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 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) [2022-11-16 10:55:22,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 10:55:22,844 INFO L93 Difference]: Finished difference Result 93 states and 97 transitions. [2022-11-16 10:55:22,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 10:55:22,848 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-11-16 10:55:22,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 10:55:22,856 INFO L225 Difference]: With dead ends: 93 [2022-11-16 10:55:22,856 INFO L226 Difference]: Without dead ends: 91 [2022-11-16 10:55:22,858 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 10:55:22,862 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 139 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 10:55:22,866 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 52 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 10:55:22,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2022-11-16 10:55:22,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 72. [2022-11-16 10:55:22,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 39 states have (on average 1.9230769230769231) internal successors, (75), 71 states have internal predecessors, (75), 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) [2022-11-16 10:55:22,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 75 transitions. [2022-11-16 10:55:22,916 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 75 transitions. Word has length 4 [2022-11-16 10:55:22,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 10:55:22,916 INFO L495 AbstractCegarLoop]: Abstraction has 72 states and 75 transitions. [2022-11-16 10:55:22,917 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 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) [2022-11-16 10:55:22,917 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 75 transitions. [2022-11-16 10:55:22,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-16 10:55:22,918 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 10:55:22,918 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-16 10:55:22,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 10:55:22,919 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-16 10:55:22,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:55:22,919 INFO L85 PathProgramCache]: Analyzing trace with hash 925638, now seen corresponding path program 1 times [2022-11-16 10:55:22,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:55:22,920 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845125084] [2022-11-16 10:55:22,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:55:22,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:55:22,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:55:23,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 10:55:23,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:55:23,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845125084] [2022-11-16 10:55:23,189 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1845125084] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:55:23,190 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 10:55:23,190 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 10:55:23,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713688403] [2022-11-16 10:55:23,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:55:23,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 10:55:23,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:55:23,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 10:55:23,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 10:55:23,198 INFO L87 Difference]: Start difference. First operand 72 states and 75 transitions. Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 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) [2022-11-16 10:55:23,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 10:55:23,423 INFO L93 Difference]: Finished difference Result 83 states and 87 transitions. [2022-11-16 10:55:23,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 10:55:23,424 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-11-16 10:55:23,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 10:55:23,429 INFO L225 Difference]: With dead ends: 83 [2022-11-16 10:55:23,429 INFO L226 Difference]: Without dead ends: 83 [2022-11-16 10:55:23,435 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 10:55:23,438 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 135 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 10:55:23,439 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 34 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 10:55:23,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2022-11-16 10:55:23,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 73. [2022-11-16 10:55:23,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 45 states have (on average 1.7555555555555555) internal successors, (79), 72 states have internal predecessors, (79), 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) [2022-11-16 10:55:23,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 79 transitions. [2022-11-16 10:55:23,450 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 79 transitions. Word has length 4 [2022-11-16 10:55:23,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 10:55:23,450 INFO L495 AbstractCegarLoop]: Abstraction has 73 states and 79 transitions. [2022-11-16 10:55:23,451 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 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) [2022-11-16 10:55:23,451 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 79 transitions. [2022-11-16 10:55:23,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-16 10:55:23,451 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 10:55:23,451 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-16 10:55:23,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 10:55:23,452 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-16 10:55:23,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:55:23,452 INFO L85 PathProgramCache]: Analyzing trace with hash 28694727, now seen corresponding path program 1 times [2022-11-16 10:55:23,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:55:23,453 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265572600] [2022-11-16 10:55:23,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:55:23,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:55:23,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:55:23,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 10:55:23,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:55:23,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265572600] [2022-11-16 10:55:23,508 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [265572600] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:55:23,509 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 10:55:23,509 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 10:55:23,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956600906] [2022-11-16 10:55:23,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:55:23,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 10:55:23,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:55:23,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 10:55:23,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 10:55:23,511 INFO L87 Difference]: Start difference. First operand 73 states and 79 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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) [2022-11-16 10:55:23,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 10:55:23,602 INFO L93 Difference]: Finished difference Result 79 states and 83 transitions. [2022-11-16 10:55:23,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 10:55:23,603 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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 [2022-11-16 10:55:23,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 10:55:23,604 INFO L225 Difference]: With dead ends: 79 [2022-11-16 10:55:23,604 INFO L226 Difference]: Without dead ends: 79 [2022-11-16 10:55:23,605 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 10:55:23,606 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 48 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 10:55:23,606 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 51 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 10:55:23,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2022-11-16 10:55:23,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 69. [2022-11-16 10:55:23,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 45 states have (on average 1.6666666666666667) internal successors, (75), 68 states have internal predecessors, (75), 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) [2022-11-16 10:55:23,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 75 transitions. [2022-11-16 10:55:23,613 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 75 transitions. Word has length 5 [2022-11-16 10:55:23,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 10:55:23,613 INFO L495 AbstractCegarLoop]: Abstraction has 69 states and 75 transitions. [2022-11-16 10:55:23,614 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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) [2022-11-16 10:55:23,614 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 75 transitions. [2022-11-16 10:55:23,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-16 10:55:23,614 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 10:55:23,615 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-16 10:55:23,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-16 10:55:23,615 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-16 10:55:23,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:55:23,616 INFO L85 PathProgramCache]: Analyzing trace with hash 28694728, now seen corresponding path program 1 times [2022-11-16 10:55:23,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:55:23,617 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693025951] [2022-11-16 10:55:23,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:55:23,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:55:23,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:55:23,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 10:55:23,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:55:23,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693025951] [2022-11-16 10:55:23,691 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [693025951] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:55:23,691 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 10:55:23,691 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 10:55:23,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299906439] [2022-11-16 10:55:23,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:55:23,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 10:55:23,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:55:23,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 10:55:23,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 10:55:23,693 INFO L87 Difference]: Start difference. First operand 69 states and 75 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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) [2022-11-16 10:55:23,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 10:55:23,748 INFO L93 Difference]: Finished difference Result 66 states and 72 transitions. [2022-11-16 10:55:23,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 10:55:23,748 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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 [2022-11-16 10:55:23,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 10:55:23,749 INFO L225 Difference]: With dead ends: 66 [2022-11-16 10:55:23,750 INFO L226 Difference]: Without dead ends: 66 [2022-11-16 10:55:23,750 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 10:55:23,751 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 57 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 10:55:23,752 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 36 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 10:55:23,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2022-11-16 10:55:23,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 65. [2022-11-16 10:55:23,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 45 states have (on average 1.5777777777777777) internal successors, (71), 64 states have internal predecessors, (71), 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) [2022-11-16 10:55:23,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 71 transitions. [2022-11-16 10:55:23,757 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 71 transitions. Word has length 5 [2022-11-16 10:55:23,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 10:55:23,758 INFO L495 AbstractCegarLoop]: Abstraction has 65 states and 71 transitions. [2022-11-16 10:55:23,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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) [2022-11-16 10:55:23,758 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 71 transitions. [2022-11-16 10:55:23,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-16 10:55:23,759 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 10:55:23,759 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:55:23,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-16 10:55:23,760 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-16 10:55:23,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:55:23,761 INFO L85 PathProgramCache]: Analyzing trace with hash -1328641136, now seen corresponding path program 1 times [2022-11-16 10:55:23,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:55:23,761 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337693929] [2022-11-16 10:55:23,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:55:23,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:55:23,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:55:24,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 10:55:24,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:55:24,132 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337693929] [2022-11-16 10:55:24,132 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [337693929] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:55:24,133 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 10:55:24,133 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 10:55:24,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080783307] [2022-11-16 10:55:24,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:55:24,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 10:55:24,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:55:24,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 10:55:24,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-16 10:55:24,136 INFO L87 Difference]: Start difference. First operand 65 states and 71 transitions. Second operand has 7 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 states have internal predecessors, (10), 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) [2022-11-16 10:55:24,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 10:55:24,399 INFO L93 Difference]: Finished difference Result 76 states and 82 transitions. [2022-11-16 10:55:24,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-16 10:55:24,400 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 states have internal predecessors, (10), 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 10 [2022-11-16 10:55:24,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 10:55:24,402 INFO L225 Difference]: With dead ends: 76 [2022-11-16 10:55:24,402 INFO L226 Difference]: Without dead ends: 76 [2022-11-16 10:55:24,403 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2022-11-16 10:55:24,403 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 16 mSDsluCounter, 229 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 284 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 10:55:24,404 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 284 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 10:55:24,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2022-11-16 10:55:24,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 71. [2022-11-16 10:55:24,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 51 states have (on average 1.5098039215686274) internal successors, (77), 70 states have internal predecessors, (77), 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) [2022-11-16 10:55:24,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 77 transitions. [2022-11-16 10:55:24,407 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 77 transitions. Word has length 10 [2022-11-16 10:55:24,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 10:55:24,408 INFO L495 AbstractCegarLoop]: Abstraction has 71 states and 77 transitions. [2022-11-16 10:55:24,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 states have internal predecessors, (10), 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) [2022-11-16 10:55:24,408 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 77 transitions. [2022-11-16 10:55:24,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-16 10:55:24,409 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 10:55:24,409 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:55:24,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-16 10:55:24,409 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-16 10:55:24,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:55:24,410 INFO L85 PathProgramCache]: Analyzing trace with hash 2075015976, now seen corresponding path program 1 times [2022-11-16 10:55:24,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:55:24,410 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164427830] [2022-11-16 10:55:24,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:55:24,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:55:24,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:55:24,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 10:55:24,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:55:24,741 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164427830] [2022-11-16 10:55:24,741 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [164427830] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:55:24,741 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 10:55:24,742 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 10:55:24,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215784531] [2022-11-16 10:55:24,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:55:24,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 10:55:24,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:55:24,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 10:55:24,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-16 10:55:24,746 INFO L87 Difference]: Start difference. First operand 71 states and 77 transitions. Second operand has 6 states, 5 states have (on average 3.6) internal successors, (18), 6 states have internal predecessors, (18), 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) [2022-11-16 10:55:24,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 10:55:24,945 INFO L93 Difference]: Finished difference Result 79 states and 83 transitions. [2022-11-16 10:55:24,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 10:55:24,945 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.6) internal successors, (18), 6 states have internal predecessors, (18), 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 18 [2022-11-16 10:55:24,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 10:55:24,946 INFO L225 Difference]: With dead ends: 79 [2022-11-16 10:55:24,947 INFO L226 Difference]: Without dead ends: 79 [2022-11-16 10:55:24,947 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-16 10:55:24,948 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 99 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 10:55:24,949 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 74 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 10:55:24,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2022-11-16 10:55:24,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 70. [2022-11-16 10:55:24,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 51 states have (on average 1.4901960784313726) internal successors, (76), 69 states have internal predecessors, (76), 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) [2022-11-16 10:55:24,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 76 transitions. [2022-11-16 10:55:24,955 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 76 transitions. Word has length 18 [2022-11-16 10:55:24,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 10:55:24,955 INFO L495 AbstractCegarLoop]: Abstraction has 70 states and 76 transitions. [2022-11-16 10:55:24,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.6) internal successors, (18), 6 states have internal predecessors, (18), 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) [2022-11-16 10:55:24,956 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 76 transitions. [2022-11-16 10:55:24,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-16 10:55:24,956 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 10:55:24,957 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:55:24,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-16 10:55:24,957 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-16 10:55:24,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:55:24,958 INFO L85 PathProgramCache]: Analyzing trace with hash 2075015977, now seen corresponding path program 1 times [2022-11-16 10:55:24,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:55:24,958 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792097105] [2022-11-16 10:55:24,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:55:24,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:55:24,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:55:25,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 10:55:25,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:55:25,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792097105] [2022-11-16 10:55:25,336 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [792097105] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:55:25,336 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 10:55:25,336 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 10:55:25,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359259350] [2022-11-16 10:55:25,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:55:25,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 10:55:25,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:55:25,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 10:55:25,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-16 10:55:25,340 INFO L87 Difference]: Start difference. First operand 70 states and 76 transitions. Second operand has 6 states, 5 states have (on average 3.6) internal successors, (18), 6 states have internal predecessors, (18), 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) [2022-11-16 10:55:25,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 10:55:25,549 INFO L93 Difference]: Finished difference Result 81 states and 85 transitions. [2022-11-16 10:55:25,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 10:55:25,552 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.6) internal successors, (18), 6 states have internal predecessors, (18), 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 18 [2022-11-16 10:55:25,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 10:55:25,553 INFO L225 Difference]: With dead ends: 81 [2022-11-16 10:55:25,553 INFO L226 Difference]: Without dead ends: 81 [2022-11-16 10:55:25,553 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-16 10:55:25,554 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 171 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 10:55:25,554 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [171 Valid, 78 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 10:55:25,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2022-11-16 10:55:25,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 69. [2022-11-16 10:55:25,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 51 states have (on average 1.4705882352941178) internal successors, (75), 68 states have internal predecessors, (75), 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) [2022-11-16 10:55:25,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 75 transitions. [2022-11-16 10:55:25,569 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 75 transitions. Word has length 18 [2022-11-16 10:55:25,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 10:55:25,570 INFO L495 AbstractCegarLoop]: Abstraction has 69 states and 75 transitions. [2022-11-16 10:55:25,570 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.6) internal successors, (18), 6 states have internal predecessors, (18), 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) [2022-11-16 10:55:25,570 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 75 transitions. [2022-11-16 10:55:25,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-16 10:55:25,572 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 10:55:25,572 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:55:25,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-16 10:55:25,573 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-16 10:55:25,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:55:25,574 INFO L85 PathProgramCache]: Analyzing trace with hash 1245694816, now seen corresponding path program 1 times [2022-11-16 10:55:25,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:55:25,574 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649826562] [2022-11-16 10:55:25,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:55:25,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:55:25,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:55:25,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 10:55:25,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:55:25,738 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649826562] [2022-11-16 10:55:25,739 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [649826562] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:55:25,739 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 10:55:25,739 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 10:55:25,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331804999] [2022-11-16 10:55:25,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:55:25,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 10:55:25,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:55:25,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 10:55:25,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 10:55:25,742 INFO L87 Difference]: Start difference. First operand 69 states and 75 transitions. Second operand has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 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) [2022-11-16 10:55:25,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 10:55:25,859 INFO L93 Difference]: Finished difference Result 63 states and 65 transitions. [2022-11-16 10:55:25,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 10:55:25,860 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 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 20 [2022-11-16 10:55:25,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 10:55:25,861 INFO L225 Difference]: With dead ends: 63 [2022-11-16 10:55:25,861 INFO L226 Difference]: Without dead ends: 63 [2022-11-16 10:55:25,862 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-16 10:55:25,864 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 64 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 10:55:25,865 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 91 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 10:55:25,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2022-11-16 10:55:25,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2022-11-16 10:55:25,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 45 states have (on average 1.4444444444444444) internal successors, (65), 62 states have internal predecessors, (65), 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) [2022-11-16 10:55:25,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 65 transitions. [2022-11-16 10:55:25,878 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 65 transitions. Word has length 20 [2022-11-16 10:55:25,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 10:55:25,879 INFO L495 AbstractCegarLoop]: Abstraction has 63 states and 65 transitions. [2022-11-16 10:55:25,879 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 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) [2022-11-16 10:55:25,879 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 65 transitions. [2022-11-16 10:55:25,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-16 10:55:25,880 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 10:55:25,880 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:55:25,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-16 10:55:25,881 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-16 10:55:25,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:55:25,882 INFO L85 PathProgramCache]: Analyzing trace with hash -663319495, now seen corresponding path program 1 times [2022-11-16 10:55:25,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:55:25,882 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760303377] [2022-11-16 10:55:25,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:55:25,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:55:25,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:55:26,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 10:55:26,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:55:26,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760303377] [2022-11-16 10:55:26,069 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1760303377] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:55:26,069 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 10:55:26,069 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 10:55:26,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118312434] [2022-11-16 10:55:26,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:55:26,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 10:55:26,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:55:26,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 10:55:26,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 10:55:26,074 INFO L87 Difference]: Start difference. First operand 63 states and 65 transitions. Second operand has 5 states, 4 states have (on average 5.25) internal successors, (21), 5 states have internal predecessors, (21), 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) [2022-11-16 10:55:26,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 10:55:26,198 INFO L93 Difference]: Finished difference Result 62 states and 64 transitions. [2022-11-16 10:55:26,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 10:55:26,199 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.25) internal successors, (21), 5 states have internal predecessors, (21), 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 21 [2022-11-16 10:55:26,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 10:55:26,202 INFO L225 Difference]: With dead ends: 62 [2022-11-16 10:55:26,202 INFO L226 Difference]: Without dead ends: 62 [2022-11-16 10:55:26,202 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-16 10:55:26,205 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 61 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 10:55:26,206 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 83 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 10:55:26,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2022-11-16 10:55:26,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2022-11-16 10:55:26,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 45 states have (on average 1.4222222222222223) internal successors, (64), 61 states have internal predecessors, (64), 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) [2022-11-16 10:55:26,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 64 transitions. [2022-11-16 10:55:26,221 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 64 transitions. Word has length 21 [2022-11-16 10:55:26,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 10:55:26,221 INFO L495 AbstractCegarLoop]: Abstraction has 62 states and 64 transitions. [2022-11-16 10:55:26,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.25) internal successors, (21), 5 states have internal predecessors, (21), 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) [2022-11-16 10:55:26,222 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 64 transitions. [2022-11-16 10:55:26,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-16 10:55:26,222 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 10:55:26,223 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:55:26,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-16 10:55:26,223 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-16 10:55:26,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:55:26,224 INFO L85 PathProgramCache]: Analyzing trace with hash 911932233, now seen corresponding path program 1 times [2022-11-16 10:55:26,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:55:26,224 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290311939] [2022-11-16 10:55:26,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:55:26,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:55:26,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:55:26,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 10:55:26,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:55:26,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290311939] [2022-11-16 10:55:26,430 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [290311939] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:55:26,431 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 10:55:26,431 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 10:55:26,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62874363] [2022-11-16 10:55:26,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:55:26,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 10:55:26,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:55:26,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 10:55:26,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 10:55:26,433 INFO L87 Difference]: Start difference. First operand 62 states and 64 transitions. Second operand has 5 states, 4 states have (on average 5.5) internal successors, (22), 5 states have internal predecessors, (22), 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) [2022-11-16 10:55:26,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 10:55:26,569 INFO L93 Difference]: Finished difference Result 61 states and 63 transitions. [2022-11-16 10:55:26,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 10:55:26,569 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.5) internal successors, (22), 5 states have internal predecessors, (22), 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 22 [2022-11-16 10:55:26,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 10:55:26,570 INFO L225 Difference]: With dead ends: 61 [2022-11-16 10:55:26,570 INFO L226 Difference]: Without dead ends: 61 [2022-11-16 10:55:26,571 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-16 10:55:26,571 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 57 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 10:55:26,573 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 69 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 10:55:26,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2022-11-16 10:55:26,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2022-11-16 10:55:26,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 45 states have (on average 1.4) internal successors, (63), 60 states have internal predecessors, (63), 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) [2022-11-16 10:55:26,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 63 transitions. [2022-11-16 10:55:26,591 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 63 transitions. Word has length 22 [2022-11-16 10:55:26,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 10:55:26,592 INFO L495 AbstractCegarLoop]: Abstraction has 61 states and 63 transitions. [2022-11-16 10:55:26,592 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.5) internal successors, (22), 5 states have internal predecessors, (22), 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) [2022-11-16 10:55:26,593 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 63 transitions. [2022-11-16 10:55:26,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-16 10:55:26,595 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 10:55:26,595 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:55:26,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-16 10:55:26,596 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-16 10:55:26,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:55:26,597 INFO L85 PathProgramCache]: Analyzing trace with hash -428723026, now seen corresponding path program 1 times [2022-11-16 10:55:26,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:55:26,597 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246478297] [2022-11-16 10:55:26,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:55:26,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:55:26,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:55:27,127 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 10:55:27,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:55:27,128 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246478297] [2022-11-16 10:55:27,128 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1246478297] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 10:55:27,128 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1054402724] [2022-11-16 10:55:27,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:55:27,129 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 10:55:27,129 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f28bad-eeb0-418e-bca1-6d1e01a5868a/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 10:55:27,134 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f28bad-eeb0-418e-bca1-6d1e01a5868a/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 10:55:27,155 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f28bad-eeb0-418e-bca1-6d1e01a5868a/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 10:55:27,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:55:27,277 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 38 conjunts are in the unsatisfiable core [2022-11-16 10:55:27,285 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 10:55:27,515 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 11 treesize of output 7 [2022-11-16 10:55:27,610 INFO L321 Elim1Store]: treesize reduction 30, result has 37.5 percent of original size [2022-11-16 10:55:27,610 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 29 [2022-11-16 10:55:27,733 INFO L321 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-11-16 10:55:27,733 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 24 [2022-11-16 10:55:27,854 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-16 10:55:27,854 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 16 [2022-11-16 10:55:27,863 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 10:55:27,863 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 10:55:28,077 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 34 [2022-11-16 10:55:28,549 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 10:55:28,549 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 103 treesize of output 255 [2022-11-16 10:55:28,989 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 10:55:28,990 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1054402724] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 10:55:28,991 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 10:55:28,992 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 8] total 19 [2022-11-16 10:55:28,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877076644] [2022-11-16 10:55:28,993 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 10:55:28,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-16 10:55:28,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:55:28,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-16 10:55:28,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=323, Unknown=0, NotChecked=0, Total=380 [2022-11-16 10:55:28,995 INFO L87 Difference]: Start difference. First operand 61 states and 63 transitions. Second operand has 20 states, 19 states have (on average 2.6842105263157894) internal successors, (51), 20 states have internal predecessors, (51), 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) [2022-11-16 10:55:29,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 10:55:29,759 INFO L93 Difference]: Finished difference Result 158 states and 166 transitions. [2022-11-16 10:55:29,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-16 10:55:29,760 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 2.6842105263157894) internal successors, (51), 20 states have internal predecessors, (51), 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 22 [2022-11-16 10:55:29,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 10:55:29,761 INFO L225 Difference]: With dead ends: 158 [2022-11-16 10:55:29,761 INFO L226 Difference]: Without dead ends: 158 [2022-11-16 10:55:29,762 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=178, Invalid=634, Unknown=0, NotChecked=0, Total=812 [2022-11-16 10:55:29,763 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 218 mSDsluCounter, 364 mSDsCounter, 0 mSdLazyCounter, 426 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 218 SdHoareTripleChecker+Valid, 396 SdHoareTripleChecker+Invalid, 648 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 426 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 208 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-16 10:55:29,763 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [218 Valid, 396 Invalid, 648 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 426 Invalid, 0 Unknown, 208 Unchecked, 0.4s Time] [2022-11-16 10:55:29,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2022-11-16 10:55:29,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 75. [2022-11-16 10:55:29,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 59 states have (on average 1.3559322033898304) internal successors, (80), 74 states have internal predecessors, (80), 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) [2022-11-16 10:55:29,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 80 transitions. [2022-11-16 10:55:29,768 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 80 transitions. Word has length 22 [2022-11-16 10:55:29,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 10:55:29,768 INFO L495 AbstractCegarLoop]: Abstraction has 75 states and 80 transitions. [2022-11-16 10:55:29,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 2.6842105263157894) internal successors, (51), 20 states have internal predecessors, (51), 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) [2022-11-16 10:55:29,768 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 80 transitions. [2022-11-16 10:55:29,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-16 10:55:29,769 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 10:55:29,769 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:55:29,787 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f28bad-eeb0-418e-bca1-6d1e01a5868a/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-16 10:55:29,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f28bad-eeb0-418e-bca1-6d1e01a5868a/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-16 10:55:29,981 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-16 10:55:29,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:55:29,981 INFO L85 PathProgramCache]: Analyzing trace with hash -428723025, now seen corresponding path program 1 times [2022-11-16 10:55:29,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:55:29,981 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840491116] [2022-11-16 10:55:29,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:55:29,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:55:30,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:55:30,672 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 10:55:30,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:55:30,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840491116] [2022-11-16 10:55:30,673 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1840491116] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 10:55:30,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [705334555] [2022-11-16 10:55:30,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:55:30,674 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 10:55:30,674 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f28bad-eeb0-418e-bca1-6d1e01a5868a/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 10:55:30,683 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f28bad-eeb0-418e-bca1-6d1e01a5868a/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 10:55:30,704 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f28bad-eeb0-418e-bca1-6d1e01a5868a/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-16 10:55:30,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:55:30,811 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 55 conjunts are in the unsatisfiable core [2022-11-16 10:55:30,814 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 10:55:31,003 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 11 treesize of output 7 [2022-11-16 10:55:31,013 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 11 treesize of output 7 [2022-11-16 10:55:31,109 INFO L321 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2022-11-16 10:55:31,109 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-11-16 10:55:31,120 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 16 treesize of output 18 [2022-11-16 10:55:31,227 INFO L321 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-11-16 10:55:31,227 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 24 [2022-11-16 10:55:31,247 INFO L321 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-11-16 10:55:31,248 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 18 [2022-11-16 10:55:31,360 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-16 10:55:31,360 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 16 [2022-11-16 10:55:31,370 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-16 10:55:31,371 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 10 [2022-11-16 10:55:31,374 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 10:55:31,374 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 10:55:33,692 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 28 [2022-11-16 10:55:33,709 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 62 [2022-11-16 10:55:33,718 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 102 treesize of output 94 [2022-11-16 10:55:48,073 WARN L233 SmtUtils]: Spent 14.23s on a formula simplification. DAG size of input: 33 DAG size of output: 32 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 10:55:48,157 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 10:55:48,157 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 51 treesize of output 91 [2022-11-16 10:55:48,177 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 58 treesize of output 54 [2022-11-16 10:55:48,324 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 10:55:48,324 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [705334555] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 10:55:48,325 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 10:55:48,325 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 8] total 22 [2022-11-16 10:55:48,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829068134] [2022-11-16 10:55:48,325 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 10:55:48,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-16 10:55:48,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:55:48,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-16 10:55:48,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=438, Unknown=0, NotChecked=0, Total=506 [2022-11-16 10:55:48,327 INFO L87 Difference]: Start difference. First operand 75 states and 80 transitions. Second operand has 23 states, 22 states have (on average 2.8181818181818183) internal successors, (62), 23 states have internal predecessors, (62), 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) [2022-11-16 10:55:51,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 10:55:51,513 INFO L93 Difference]: Finished difference Result 159 states and 167 transitions. [2022-11-16 10:55:51,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-16 10:55:51,513 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 2.8181818181818183) internal successors, (62), 23 states have internal predecessors, (62), 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 22 [2022-11-16 10:55:51,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 10:55:51,514 INFO L225 Difference]: With dead ends: 159 [2022-11-16 10:55:51,514 INFO L226 Difference]: Without dead ends: 159 [2022-11-16 10:55:51,515 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 29 SyntacticMatches, 2 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 19.5s TimeCoverageRelationStatistics Valid=206, Invalid=916, Unknown=0, NotChecked=0, Total=1122 [2022-11-16 10:55:51,515 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 446 mSDsluCounter, 350 mSDsCounter, 0 mSdLazyCounter, 354 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 446 SdHoareTripleChecker+Valid, 379 SdHoareTripleChecker+Invalid, 563 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 202 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-16 10:55:51,516 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [446 Valid, 379 Invalid, 563 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 354 Invalid, 0 Unknown, 202 Unchecked, 0.4s Time] [2022-11-16 10:55:51,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2022-11-16 10:55:51,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 75. [2022-11-16 10:55:51,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 59 states have (on average 1.3389830508474576) internal successors, (79), 74 states have internal predecessors, (79), 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) [2022-11-16 10:55:51,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 79 transitions. [2022-11-16 10:55:51,518 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 79 transitions. Word has length 22 [2022-11-16 10:55:51,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 10:55:51,518 INFO L495 AbstractCegarLoop]: Abstraction has 75 states and 79 transitions. [2022-11-16 10:55:51,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 2.8181818181818183) internal successors, (62), 23 states have internal predecessors, (62), 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) [2022-11-16 10:55:51,519 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 79 transitions. [2022-11-16 10:55:51,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-16 10:55:51,519 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 10:55:51,519 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:55:51,535 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f28bad-eeb0-418e-bca1-6d1e01a5868a/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-16 10:55:51,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f28bad-eeb0-418e-bca1-6d1e01a5868a/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 10:55:51,727 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-16 10:55:51,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:55:51,727 INFO L85 PathProgramCache]: Analyzing trace with hash -1794871749, now seen corresponding path program 1 times [2022-11-16 10:55:51,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:55:51,728 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402109441] [2022-11-16 10:55:51,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:55:51,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:55:51,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:55:51,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 10:55:51,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:55:51,810 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402109441] [2022-11-16 10:55:51,810 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [402109441] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:55:51,810 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 10:55:51,810 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 10:55:51,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122732539] [2022-11-16 10:55:51,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:55:51,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 10:55:51,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:55:51,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 10:55:51,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 10:55:51,812 INFO L87 Difference]: Start difference. First operand 75 states and 79 transitions. Second operand has 5 states, 4 states have (on average 5.75) internal successors, (23), 5 states have internal predecessors, (23), 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) [2022-11-16 10:55:51,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 10:55:51,952 INFO L93 Difference]: Finished difference Result 74 states and 78 transitions. [2022-11-16 10:55:51,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 10:55:51,952 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.75) internal successors, (23), 5 states have internal predecessors, (23), 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 23 [2022-11-16 10:55:51,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 10:55:51,953 INFO L225 Difference]: With dead ends: 74 [2022-11-16 10:55:51,953 INFO L226 Difference]: Without dead ends: 74 [2022-11-16 10:55:51,953 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-16 10:55:51,954 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 4 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 10:55:51,954 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 120 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 10:55:51,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2022-11-16 10:55:51,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2022-11-16 10:55:51,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 59 states have (on average 1.3220338983050848) internal successors, (78), 73 states have internal predecessors, (78), 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) [2022-11-16 10:55:51,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 78 transitions. [2022-11-16 10:55:51,956 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 78 transitions. Word has length 23 [2022-11-16 10:55:51,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 10:55:51,957 INFO L495 AbstractCegarLoop]: Abstraction has 74 states and 78 transitions. [2022-11-16 10:55:51,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.75) internal successors, (23), 5 states have internal predecessors, (23), 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) [2022-11-16 10:55:51,957 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 78 transitions. [2022-11-16 10:55:51,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-16 10:55:51,957 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 10:55:51,957 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:55:51,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-16 10:55:51,958 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-16 10:55:51,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:55:51,958 INFO L85 PathProgramCache]: Analyzing trace with hash 193550732, now seen corresponding path program 1 times [2022-11-16 10:55:51,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:55:51,960 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258544825] [2022-11-16 10:55:51,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:55:51,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:55:51,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:55:52,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 10:55:52,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:55:52,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258544825] [2022-11-16 10:55:52,197 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1258544825] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:55:52,197 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 10:55:52,197 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 10:55:52,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275482428] [2022-11-16 10:55:52,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:55:52,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 10:55:52,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:55:52,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 10:55:52,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-16 10:55:52,198 INFO L87 Difference]: Start difference. First operand 74 states and 78 transitions. Second operand has 6 states, 5 states have (on average 4.8) internal successors, (24), 6 states have internal predecessors, (24), 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) [2022-11-16 10:55:52,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 10:55:52,374 INFO L93 Difference]: Finished difference Result 73 states and 77 transitions. [2022-11-16 10:55:52,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 10:55:52,375 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.8) internal successors, (24), 6 states have internal predecessors, (24), 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 24 [2022-11-16 10:55:52,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 10:55:52,376 INFO L225 Difference]: With dead ends: 73 [2022-11-16 10:55:52,376 INFO L226 Difference]: Without dead ends: 73 [2022-11-16 10:55:52,376 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2022-11-16 10:55:52,377 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 102 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 10:55:52,377 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 52 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 10:55:52,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2022-11-16 10:55:52,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2022-11-16 10:55:52,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 59 states have (on average 1.305084745762712) internal successors, (77), 72 states have internal predecessors, (77), 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) [2022-11-16 10:55:52,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 77 transitions. [2022-11-16 10:55:52,379 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 77 transitions. Word has length 24 [2022-11-16 10:55:52,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 10:55:52,379 INFO L495 AbstractCegarLoop]: Abstraction has 73 states and 77 transitions. [2022-11-16 10:55:52,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.8) internal successors, (24), 6 states have internal predecessors, (24), 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) [2022-11-16 10:55:52,380 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 77 transitions. [2022-11-16 10:55:52,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-16 10:55:52,381 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 10:55:52,381 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:55:52,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-16 10:55:52,381 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr26REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-16 10:55:52,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:55:52,382 INFO L85 PathProgramCache]: Analyzing trace with hash 193550733, now seen corresponding path program 1 times [2022-11-16 10:55:52,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:55:52,382 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254200478] [2022-11-16 10:55:52,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:55:52,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:55:52,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:55:52,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 10:55:52,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:55:52,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254200478] [2022-11-16 10:55:52,454 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1254200478] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:55:52,454 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 10:55:52,455 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 10:55:52,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038597372] [2022-11-16 10:55:52,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:55:52,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 10:55:52,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:55:52,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 10:55:52,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 10:55:52,456 INFO L87 Difference]: Start difference. First operand 73 states and 77 transitions. Second operand has 4 states, 3 states have (on average 8.0) internal successors, (24), 4 states have internal predecessors, (24), 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) [2022-11-16 10:55:52,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 10:55:52,511 INFO L93 Difference]: Finished difference Result 68 states and 72 transitions. [2022-11-16 10:55:52,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 10:55:52,512 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 8.0) internal successors, (24), 4 states have internal predecessors, (24), 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 24 [2022-11-16 10:55:52,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 10:55:52,512 INFO L225 Difference]: With dead ends: 68 [2022-11-16 10:55:52,512 INFO L226 Difference]: Without dead ends: 68 [2022-11-16 10:55:52,512 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 10:55:52,513 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 69 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 10:55:52,513 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 29 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 10:55:52,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2022-11-16 10:55:52,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2022-11-16 10:55:52,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 59 states have (on average 1.2203389830508475) internal successors, (72), 67 states have internal predecessors, (72), 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) [2022-11-16 10:55:52,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 72 transitions. [2022-11-16 10:55:52,515 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 72 transitions. Word has length 24 [2022-11-16 10:55:52,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 10:55:52,516 INFO L495 AbstractCegarLoop]: Abstraction has 68 states and 72 transitions. [2022-11-16 10:55:52,516 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 8.0) internal successors, (24), 4 states have internal predecessors, (24), 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) [2022-11-16 10:55:52,516 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 72 transitions. [2022-11-16 10:55:52,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-16 10:55:52,516 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 10:55:52,516 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:55:52,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-16 10:55:52,517 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-16 10:55:52,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:55:52,517 INFO L85 PathProgramCache]: Analyzing trace with hash 218187410, now seen corresponding path program 1 times [2022-11-16 10:55:52,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:55:52,517 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033337009] [2022-11-16 10:55:52,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:55:52,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:55:52,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 10:55:52,543 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 10:55:52,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 10:55:52,587 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 10:55:52,587 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-16 10:55:52,588 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_LEAK (40 of 41 remaining) [2022-11-16 10:55:52,590 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (39 of 41 remaining) [2022-11-16 10:55:52,591 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (38 of 41 remaining) [2022-11-16 10:55:52,591 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (37 of 41 remaining) [2022-11-16 10:55:52,591 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (36 of 41 remaining) [2022-11-16 10:55:52,591 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (35 of 41 remaining) [2022-11-16 10:55:52,591 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (34 of 41 remaining) [2022-11-16 10:55:52,592 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (33 of 41 remaining) [2022-11-16 10:55:52,592 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (32 of 41 remaining) [2022-11-16 10:55:52,592 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (31 of 41 remaining) [2022-11-16 10:55:52,592 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (30 of 41 remaining) [2022-11-16 10:55:52,593 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (29 of 41 remaining) [2022-11-16 10:55:52,593 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (28 of 41 remaining) [2022-11-16 10:55:52,593 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (27 of 41 remaining) [2022-11-16 10:55:52,593 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (26 of 41 remaining) [2022-11-16 10:55:52,593 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (25 of 41 remaining) [2022-11-16 10:55:52,594 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (24 of 41 remaining) [2022-11-16 10:55:52,594 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 41 remaining) [2022-11-16 10:55:52,594 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 41 remaining) [2022-11-16 10:55:52,594 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 41 remaining) [2022-11-16 10:55:52,594 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 41 remaining) [2022-11-16 10:55:52,595 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 41 remaining) [2022-11-16 10:55:52,595 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 41 remaining) [2022-11-16 10:55:52,595 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_FREE (17 of 41 remaining) [2022-11-16 10:55:52,597 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_FREE (16 of 41 remaining) [2022-11-16 10:55:52,597 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_FREE (15 of 41 remaining) [2022-11-16 10:55:52,597 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 41 remaining) [2022-11-16 10:55:52,598 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr26REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 41 remaining) [2022-11-16 10:55:52,598 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr27REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 41 remaining) [2022-11-16 10:55:52,598 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 41 remaining) [2022-11-16 10:55:52,598 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 41 remaining) [2022-11-16 10:55:52,601 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr30REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 41 remaining) [2022-11-16 10:55:52,601 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr31REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 41 remaining) [2022-11-16 10:55:52,601 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr32REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 41 remaining) [2022-11-16 10:55:52,601 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr33REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 41 remaining) [2022-11-16 10:55:52,602 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr34REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 41 remaining) [2022-11-16 10:55:52,602 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_FREE (4 of 41 remaining) [2022-11-16 10:55:52,602 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE (3 of 41 remaining) [2022-11-16 10:55:52,602 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_FREE (2 of 41 remaining) [2022-11-16 10:55:52,602 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr38REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 41 remaining) [2022-11-16 10:55:52,603 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr39REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 41 remaining) [2022-11-16 10:55:52,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-16 10:55:52,606 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:55:52,610 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-16 10:55:52,663 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.11 10:55:52 BoogieIcfgContainer [2022-11-16 10:55:52,671 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-16 10:55:52,671 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-16 10:55:52,672 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-16 10:55:52,672 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-16 10:55:52,673 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 10:55:21" (3/4) ... [2022-11-16 10:55:52,676 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-16 10:55:52,676 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-16 10:55:52,678 INFO L158 Benchmark]: Toolchain (without parser) took 32335.32ms. Allocated memory was 123.7MB in the beginning and 218.1MB in the end (delta: 94.4MB). Free memory was 78.1MB in the beginning and 168.4MB in the end (delta: -90.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-16 10:55:52,680 INFO L158 Benchmark]: CDTParser took 0.36ms. Allocated memory is still 123.7MB. Free memory is still 96.0MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 10:55:52,681 INFO L158 Benchmark]: CACSL2BoogieTranslator took 705.64ms. Allocated memory is still 123.7MB. Free memory was 77.9MB in the beginning and 90.0MB in the end (delta: -12.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-16 10:55:52,681 INFO L158 Benchmark]: Boogie Procedure Inliner took 53.06ms. Allocated memory is still 123.7MB. Free memory was 90.0MB in the beginning and 88.3MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 10:55:52,681 INFO L158 Benchmark]: Boogie Preprocessor took 58.81ms. Allocated memory is still 123.7MB. Free memory was 88.3MB in the beginning and 86.4MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 10:55:52,682 INFO L158 Benchmark]: RCFGBuilder took 696.63ms. Allocated memory is still 123.7MB. Free memory was 86.4MB in the beginning and 68.5MB in the end (delta: 18.0MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-11-16 10:55:52,682 INFO L158 Benchmark]: TraceAbstraction took 30807.34ms. Allocated memory was 123.7MB in the beginning and 218.1MB in the end (delta: 94.4MB). Free memory was 68.0MB in the beginning and 168.4MB in the end (delta: -100.4MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 10:55:52,682 INFO L158 Benchmark]: Witness Printer took 4.67ms. Allocated memory is still 218.1MB. Free memory is still 168.4MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 10:55:52,683 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36ms. Allocated memory is still 123.7MB. Free memory is still 96.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 705.64ms. Allocated memory is still 123.7MB. Free memory was 77.9MB in the beginning and 90.0MB in the end (delta: -12.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 53.06ms. Allocated memory is still 123.7MB. Free memory was 90.0MB in the beginning and 88.3MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 58.81ms. Allocated memory is still 123.7MB. Free memory was 88.3MB in the beginning and 86.4MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 696.63ms. Allocated memory is still 123.7MB. Free memory was 86.4MB in the beginning and 68.5MB in the end (delta: 18.0MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 30807.34ms. Allocated memory was 123.7MB in the beginning and 218.1MB in the end (delta: 94.4MB). Free memory was 68.0MB in the beginning and 168.4MB in the end (delta: -100.4MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 4.67ms. Allocated memory is still 218.1MB. Free memory is still 168.4MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 537]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 537. Possible FailurePath: [L539] struct item *list = ((void *)0); VAL [list={6:0}] [L541] CALL append(&list) [L530] struct item *item = malloc(sizeof *item); [L531] EXPR \read(**plist) VAL [\read(**plist)={0:0}, item={3:0}, plist={6:0}, plist={6:0}] [L531] item->next = *plist VAL [\read(**plist)={0:0}, item={3:0}, plist={6:0}, plist={6:0}] [L532] EXPR item->next VAL [item={3:0}, item->next={0:0}, plist={6:0}, plist={6:0}] [L532-L534] EXPR (item->next) ? item->next->data : malloc(sizeof *item) [L532-L534] EXPR (item->next) ? item->next->data : malloc(sizeof *item) VAL [(item->next) ? item->next->data : malloc(sizeof *item)={-1:0}, item={3:0}, item->next={0:0}, malloc(sizeof *item)={-1:0}, plist={6:0}, plist={6:0}] [L532-L534] item->data = (item->next) ? item->next->data : malloc(sizeof *item) VAL [(item->next) ? item->next->data : malloc(sizeof *item)={-1:0}, item={3:0}, item->next={0:0}, malloc(sizeof *item)={-1:0}, plist={6:0}, plist={6:0}] [L535] *plist = item VAL [item={3:0}, plist={6:0}, plist={6:0}] [L541] RET append(&list) [L542] COND FALSE !(__VERIFIER_nondet_int()) [L543] \read(*list) VAL [\read(*list)={3:0}, list={6:0}] [L543] COND TRUE \read(*list) [L544] EXPR \read(*list) VAL [\read(*list)={3:0}, list={6:0}] [L544] EXPR list->next VAL [\read(*list)={3:0}, list={6:0}, list->next={0:0}] [L544] struct item *next = list->next; [L545] EXPR \read(*list) VAL [\read(*list)={3:0}, list={6:0}, next={0:0}] [L545] free(list) VAL [\read(*list)={3:0}, list={6:0}, next={0:0}] [L545] free(list) VAL [\read(*list)={3:0}, list={6:0}, next={0:0}] [L545] free(list) [L546] list = next VAL [list={6:0}, next={0:0}] [L548] \read(*list) VAL [\read(*list)={0:0}, list={6:0}, next={0:0}] [L548] COND FALSE !(\read(*list)) [L553] return 0; [L539] struct item *list = ((void *)0); [L553] return 0; VAL [\result=0, next={0:0}] - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 545]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 545]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 545]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 550]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 550]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 550]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 82 locations, 41 error locations. Started 1 CEGAR loops. OverallTime: 30.6s, OverallIterations: 16, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 6.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1686 SdHoareTripleChecker+Valid, 2.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1686 mSDsluCounter, 1828 SdHoareTripleChecker+Invalid, 1.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 410 IncrementalHoareTripleChecker+Unchecked, 1313 mSDsCounter, 81 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1738 IncrementalHoareTripleChecker+Invalid, 2229 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 81 mSolverCounterUnsat, 515 mSDtfsCounter, 1738 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 200 GetRequests, 78 SyntacticMatches, 3 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 394 ImplicationChecksByTransitivity, 20.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=82occurred in iteration=0, InterpolantAutomatonStates: 105, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 15 MinimizatonAttempts, 233 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 22.8s InterpolantComputationTime, 314 NumberOfCodeBlocks, 314 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 311 ConstructedInterpolants, 22 QuantifiedInterpolants, 3488 SizeOfPredicates, 44 NumberOfNonLiveVariables, 422 ConjunctsInSsa, 93 ConjunctsInUnsatCore, 19 InterpolantComputations, 13 PerfectInterpolantSequences, 6/36 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-11-16 10:55:52,722 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f28bad-eeb0-418e-bca1-6d1e01a5868a/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f28bad-eeb0-418e-bca1-6d1e01a5868a/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f28bad-eeb0-418e-bca1-6d1e01a5868a/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f28bad-eeb0-418e-bca1-6d1e01a5868a/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f28bad-eeb0-418e-bca1-6d1e01a5868a/bin/uautomizer-tPACEb0tL8/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety/test-0232-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f28bad-eeb0-418e-bca1-6d1e01a5868a/bin/uautomizer-tPACEb0tL8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f28bad-eeb0-418e-bca1-6d1e01a5868a/bin/uautomizer-tPACEb0tL8 --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 1228d922512a0e9364273220ccc1e5afc3bfb7c0e22f10439a1ba902492e71b2 --- 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-e04fb08 [2022-11-16 10:55:54,968 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 10:55:54,970 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 10:55:54,990 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 10:55:54,990 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 10:55:54,992 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 10:55:54,993 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 10:55:54,995 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 10:55:54,997 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 10:55:54,998 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 10:55:54,999 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 10:55:55,000 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 10:55:55,001 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 10:55:55,002 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 10:55:55,003 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 10:55:55,004 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 10:55:55,005 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 10:55:55,006 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 10:55:55,008 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 10:55:55,010 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 10:55:55,012 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 10:55:55,013 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 10:55:55,015 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 10:55:55,016 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 10:55:55,020 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 10:55:55,021 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 10:55:55,021 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 10:55:55,022 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 10:55:55,023 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 10:55:55,024 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 10:55:55,024 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 10:55:55,025 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 10:55:55,026 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 10:55:55,027 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 10:55:55,028 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 10:55:55,028 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 10:55:55,029 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 10:55:55,029 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 10:55:55,030 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 10:55:55,031 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 10:55:55,032 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 10:55:55,033 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f28bad-eeb0-418e-bca1-6d1e01a5868a/bin/uautomizer-tPACEb0tL8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2022-11-16 10:55:55,060 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 10:55:55,061 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 10:55:55,062 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 10:55:55,062 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 10:55:55,063 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 10:55:55,063 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 10:55:55,064 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 10:55:55,064 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 10:55:55,065 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 10:55:55,065 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 10:55:55,065 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 10:55:55,065 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 10:55:55,066 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 10:55:55,066 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 10:55:55,066 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 10:55:55,067 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-16 10:55:55,067 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-16 10:55:55,067 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-16 10:55:55,067 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 10:55:55,068 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-16 10:55:55,068 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-16 10:55:55,068 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-16 10:55:55,068 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 10:55:55,069 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 10:55:55,069 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 10:55:55,069 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 10:55:55,070 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 10:55:55,070 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 10:55:55,070 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 10:55:55,070 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 10:55:55,071 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-16 10:55:55,071 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-16 10:55:55,071 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-16 10:55:55,071 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f28bad-eeb0-418e-bca1-6d1e01a5868a/bin/uautomizer-tPACEb0tL8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f28bad-eeb0-418e-bca1-6d1e01a5868a/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1228d922512a0e9364273220ccc1e5afc3bfb7c0e22f10439a1ba902492e71b2 [2022-11-16 10:55:55,428 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 10:55:55,449 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 10:55:55,452 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 10:55:55,453 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 10:55:55,454 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 10:55:55,455 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f28bad-eeb0-418e-bca1-6d1e01a5868a/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/memsafety/test-0232-1.i [2022-11-16 10:55:55,528 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f28bad-eeb0-418e-bca1-6d1e01a5868a/bin/uautomizer-tPACEb0tL8/data/ca0241aad/7d4143e264114295823a38e956834373/FLAGfb37d7548 [2022-11-16 10:55:56,105 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 10:55:56,110 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f28bad-eeb0-418e-bca1-6d1e01a5868a/sv-benchmarks/c/memsafety/test-0232-1.i [2022-11-16 10:55:56,131 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f28bad-eeb0-418e-bca1-6d1e01a5868a/bin/uautomizer-tPACEb0tL8/data/ca0241aad/7d4143e264114295823a38e956834373/FLAGfb37d7548 [2022-11-16 10:55:56,400 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f28bad-eeb0-418e-bca1-6d1e01a5868a/bin/uautomizer-tPACEb0tL8/data/ca0241aad/7d4143e264114295823a38e956834373 [2022-11-16 10:55:56,404 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 10:55:56,406 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 10:55:56,411 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 10:55:56,411 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 10:55:56,415 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 10:55:56,416 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 10:55:56" (1/1) ... [2022-11-16 10:55:56,418 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@719a5e13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:55:56, skipping insertion in model container [2022-11-16 10:55:56,418 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 10:55:56" (1/1) ... [2022-11-16 10:55:56,425 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 10:55:56,473 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 10:55:56,864 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 10:55:56,879 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 10:55:56,947 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 10:55:56,994 INFO L208 MainTranslator]: Completed translation [2022-11-16 10:55:56,996 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:55:56 WrapperNode [2022-11-16 10:55:56,996 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 10:55:56,997 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 10:55:56,997 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 10:55:56,997 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 10:55:57,003 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:55:56" (1/1) ... [2022-11-16 10:55:57,035 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:55:56" (1/1) ... [2022-11-16 10:55:57,066 INFO L138 Inliner]: procedures = 127, calls = 32, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 81 [2022-11-16 10:55:57,067 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 10:55:57,067 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 10:55:57,067 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 10:55:57,068 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 10:55:57,077 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:55:56" (1/1) ... [2022-11-16 10:55:57,077 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:55:56" (1/1) ... [2022-11-16 10:55:57,093 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:55:56" (1/1) ... [2022-11-16 10:55:57,096 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:55:56" (1/1) ... [2022-11-16 10:55:57,104 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:55:56" (1/1) ... [2022-11-16 10:55:57,116 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:55:56" (1/1) ... [2022-11-16 10:55:57,117 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:55:56" (1/1) ... [2022-11-16 10:55:57,118 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:55:56" (1/1) ... [2022-11-16 10:55:57,121 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 10:55:57,127 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 10:55:57,129 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 10:55:57,129 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 10:55:57,130 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:55:56" (1/1) ... [2022-11-16 10:55:57,138 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 10:55:57,150 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f28bad-eeb0-418e-bca1-6d1e01a5868a/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 10:55:57,162 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f28bad-eeb0-418e-bca1-6d1e01a5868a/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 10:55:57,184 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f28bad-eeb0-418e-bca1-6d1e01a5868a/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 10:55:57,212 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-16 10:55:57,213 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 10:55:57,213 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 10:55:57,213 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-16 10:55:57,213 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-16 10:55:57,213 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 10:55:57,214 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-16 10:55:57,214 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-16 10:55:57,215 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 10:55:57,215 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 10:55:57,362 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 10:55:57,364 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 10:55:57,954 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 10:55:57,961 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 10:55:57,964 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-16 10:55:57,966 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 10:55:57 BoogieIcfgContainer [2022-11-16 10:55:57,967 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 10:55:57,969 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 10:55:57,971 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 10:55:57,974 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 10:55:57,974 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 10:55:56" (1/3) ... [2022-11-16 10:55:57,975 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4277bcf3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 10:55:57, skipping insertion in model container [2022-11-16 10:55:57,975 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:55:56" (2/3) ... [2022-11-16 10:55:57,975 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4277bcf3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 10:55:57, skipping insertion in model container [2022-11-16 10:55:57,976 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 10:55:57" (3/3) ... [2022-11-16 10:55:57,977 INFO L112 eAbstractionObserver]: Analyzing ICFG test-0232-1.i [2022-11-16 10:55:57,995 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 10:55:57,995 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 41 error locations. [2022-11-16 10:55:58,058 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 10:55:58,064 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;@23ecdad2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 10:55:58,065 INFO L358 AbstractCegarLoop]: Starting to check reachability of 41 error locations. [2022-11-16 10:55:58,069 INFO L276 IsEmpty]: Start isEmpty. Operand has 81 states, 39 states have (on average 2.2051282051282053) internal successors, (86), 80 states have internal predecessors, (86), 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) [2022-11-16 10:55:58,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-16 10:55:58,077 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 10:55:58,078 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-16 10:55:58,078 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-16 10:55:58,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:55:58,084 INFO L85 PathProgramCache]: Analyzing trace with hash 925637, now seen corresponding path program 1 times [2022-11-16 10:55:58,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 10:55:58,094 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1197454441] [2022-11-16 10:55:58,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:55:58,095 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 10:55:58,095 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f28bad-eeb0-418e-bca1-6d1e01a5868a/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 10:55:58,098 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f28bad-eeb0-418e-bca1-6d1e01a5868a/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 10:55:58,101 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f28bad-eeb0-418e-bca1-6d1e01a5868a/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-16 10:55:58,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:55:58,192 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-16 10:55:58,198 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 10:55:58,261 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-16 10:55:58,306 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-16 10:55:58,307 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-11-16 10:55:58,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 10:55:58,328 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 10:55:58,329 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 10:55:58,329 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1197454441] [2022-11-16 10:55:58,329 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1197454441] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:55:58,330 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 10:55:58,330 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 10:55:58,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066244194] [2022-11-16 10:55:58,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:55:58,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 10:55:58,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 10:55:58,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 10:55:58,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 10:55:58,364 INFO L87 Difference]: Start difference. First operand has 81 states, 39 states have (on average 2.2051282051282053) internal successors, (86), 80 states have internal predecessors, (86), 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 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 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) [2022-11-16 10:55:58,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 10:55:58,650 INFO L93 Difference]: Finished difference Result 92 states and 96 transitions. [2022-11-16 10:55:58,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 10:55:58,652 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-11-16 10:55:58,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 10:55:58,661 INFO L225 Difference]: With dead ends: 92 [2022-11-16 10:55:58,661 INFO L226 Difference]: Without dead ends: 90 [2022-11-16 10:55:58,662 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 10:55:58,667 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 137 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 10:55:58,671 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [137 Valid, 51 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 10:55:58,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2022-11-16 10:55:58,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 71. [2022-11-16 10:55:58,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 38 states have (on average 1.9473684210526316) internal successors, (74), 70 states have internal predecessors, (74), 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) [2022-11-16 10:55:58,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 74 transitions. [2022-11-16 10:55:58,715 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 74 transitions. Word has length 4 [2022-11-16 10:55:58,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 10:55:58,716 INFO L495 AbstractCegarLoop]: Abstraction has 71 states and 74 transitions. [2022-11-16 10:55:58,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 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) [2022-11-16 10:55:58,717 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 74 transitions. [2022-11-16 10:55:58,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-16 10:55:58,717 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 10:55:58,718 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-16 10:55:58,734 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f28bad-eeb0-418e-bca1-6d1e01a5868a/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-16 10:55:58,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f28bad-eeb0-418e-bca1-6d1e01a5868a/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 10:55:58,929 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-16 10:55:58,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:55:58,930 INFO L85 PathProgramCache]: Analyzing trace with hash 925638, now seen corresponding path program 1 times [2022-11-16 10:55:58,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 10:55:58,931 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1996395650] [2022-11-16 10:55:58,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:55:58,931 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 10:55:58,931 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f28bad-eeb0-418e-bca1-6d1e01a5868a/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 10:55:58,932 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f28bad-eeb0-418e-bca1-6d1e01a5868a/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 10:55:58,952 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f28bad-eeb0-418e-bca1-6d1e01a5868a/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-16 10:55:59,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:55:59,016 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-16 10:55:59,026 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 10:55:59,042 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-16 10:55:59,050 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-16 10:55:59,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 10:55:59,120 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-16 10:55:59,136 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-16 10:55:59,137 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-16 10:55:59,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 10:55:59,153 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 10:55:59,153 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 10:55:59,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1996395650] [2022-11-16 10:55:59,154 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1996395650] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:55:59,154 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 10:55:59,154 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 10:55:59,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390092595] [2022-11-16 10:55:59,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:55:59,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 10:55:59,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 10:55:59,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 10:55:59,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 10:55:59,160 INFO L87 Difference]: Start difference. First operand 71 states and 74 transitions. Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 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) [2022-11-16 10:55:59,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 10:55:59,688 INFO L93 Difference]: Finished difference Result 145 states and 152 transitions. [2022-11-16 10:55:59,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 10:55:59,689 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-11-16 10:55:59,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 10:55:59,690 INFO L225 Difference]: With dead ends: 145 [2022-11-16 10:55:59,690 INFO L226 Difference]: Without dead ends: 145 [2022-11-16 10:55:59,690 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 10:55:59,691 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 134 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-16 10:55:59,692 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 89 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-16 10:55:59,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2022-11-16 10:55:59,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 76. [2022-11-16 10:55:59,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 47 states have (on average 1.7872340425531914) internal successors, (84), 75 states have internal predecessors, (84), 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) [2022-11-16 10:55:59,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 84 transitions. [2022-11-16 10:55:59,700 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 84 transitions. Word has length 4 [2022-11-16 10:55:59,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 10:55:59,701 INFO L495 AbstractCegarLoop]: Abstraction has 76 states and 84 transitions. [2022-11-16 10:55:59,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 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) [2022-11-16 10:55:59,701 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 84 transitions. [2022-11-16 10:55:59,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-16 10:55:59,702 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 10:55:59,702 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-16 10:55:59,722 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f28bad-eeb0-418e-bca1-6d1e01a5868a/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-16 10:55:59,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f28bad-eeb0-418e-bca1-6d1e01a5868a/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 10:55:59,914 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-16 10:55:59,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:55:59,914 INFO L85 PathProgramCache]: Analyzing trace with hash 28694727, now seen corresponding path program 1 times [2022-11-16 10:55:59,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 10:55:59,915 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1006298234] [2022-11-16 10:55:59,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:55:59,915 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 10:55:59,915 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f28bad-eeb0-418e-bca1-6d1e01a5868a/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 10:55:59,921 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f28bad-eeb0-418e-bca1-6d1e01a5868a/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 10:55:59,925 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f28bad-eeb0-418e-bca1-6d1e01a5868a/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-16 10:55:59,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:55:59,986 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 10:55:59,990 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 10:55:59,999 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-16 10:56:00,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 10:56:00,009 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 10:56:00,010 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 10:56:00,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1006298234] [2022-11-16 10:56:00,010 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1006298234] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:56:00,010 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 10:56:00,011 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 10:56:00,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351813530] [2022-11-16 10:56:00,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:56:00,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 10:56:00,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 10:56:00,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 10:56:00,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 10:56:00,013 INFO L87 Difference]: Start difference. First operand 76 states and 84 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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) [2022-11-16 10:56:00,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 10:56:00,184 INFO L93 Difference]: Finished difference Result 82 states and 87 transitions. [2022-11-16 10:56:00,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 10:56:00,185 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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 [2022-11-16 10:56:00,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 10:56:00,186 INFO L225 Difference]: With dead ends: 82 [2022-11-16 10:56:00,186 INFO L226 Difference]: Without dead ends: 82 [2022-11-16 10:56:00,186 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 10:56:00,187 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 48 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 10:56:00,188 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 51 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 10:56:00,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2022-11-16 10:56:00,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 72. [2022-11-16 10:56:00,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 47 states have (on average 1.6808510638297873) internal successors, (79), 71 states have internal predecessors, (79), 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) [2022-11-16 10:56:00,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 79 transitions. [2022-11-16 10:56:00,194 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 79 transitions. Word has length 5 [2022-11-16 10:56:00,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 10:56:00,194 INFO L495 AbstractCegarLoop]: Abstraction has 72 states and 79 transitions. [2022-11-16 10:56:00,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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) [2022-11-16 10:56:00,195 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 79 transitions. [2022-11-16 10:56:00,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-16 10:56:00,195 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 10:56:00,195 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-16 10:56:00,213 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f28bad-eeb0-418e-bca1-6d1e01a5868a/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-16 10:56:00,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f28bad-eeb0-418e-bca1-6d1e01a5868a/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 10:56:00,407 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-16 10:56:00,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:56:00,407 INFO L85 PathProgramCache]: Analyzing trace with hash 28694728, now seen corresponding path program 1 times [2022-11-16 10:56:00,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 10:56:00,408 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [522353617] [2022-11-16 10:56:00,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:56:00,408 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 10:56:00,408 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f28bad-eeb0-418e-bca1-6d1e01a5868a/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 10:56:00,415 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f28bad-eeb0-418e-bca1-6d1e01a5868a/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 10:56:00,428 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f28bad-eeb0-418e-bca1-6d1e01a5868a/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-16 10:56:00,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:00,503 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 10:56:00,506 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 10:56:00,525 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-16 10:56:00,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 10:56:00,542 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 10:56:00,542 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 10:56:00,542 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [522353617] [2022-11-16 10:56:00,542 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [522353617] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:56:00,543 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 10:56:00,543 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 10:56:00,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708901628] [2022-11-16 10:56:00,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:56:00,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 10:56:00,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 10:56:00,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 10:56:00,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 10:56:00,545 INFO L87 Difference]: Start difference. First operand 72 states and 79 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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) [2022-11-16 10:56:00,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 10:56:00,691 INFO L93 Difference]: Finished difference Result 69 states and 75 transitions. [2022-11-16 10:56:00,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 10:56:00,692 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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 [2022-11-16 10:56:00,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 10:56:00,693 INFO L225 Difference]: With dead ends: 69 [2022-11-16 10:56:00,693 INFO L226 Difference]: Without dead ends: 69 [2022-11-16 10:56:00,693 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 10:56:00,694 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 57 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 10:56:00,695 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 35 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 10:56:00,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2022-11-16 10:56:00,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 68. [2022-11-16 10:56:00,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 47 states have (on average 1.574468085106383) internal successors, (74), 67 states have internal predecessors, (74), 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) [2022-11-16 10:56:00,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 74 transitions. [2022-11-16 10:56:00,699 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 74 transitions. Word has length 5 [2022-11-16 10:56:00,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 10:56:00,699 INFO L495 AbstractCegarLoop]: Abstraction has 68 states and 74 transitions. [2022-11-16 10:56:00,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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) [2022-11-16 10:56:00,700 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 74 transitions. [2022-11-16 10:56:00,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-16 10:56:00,700 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 10:56:00,700 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:56:00,714 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f28bad-eeb0-418e-bca1-6d1e01a5868a/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-16 10:56:00,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f28bad-eeb0-418e-bca1-6d1e01a5868a/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 10:56:00,912 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-16 10:56:00,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:56:00,912 INFO L85 PathProgramCache]: Analyzing trace with hash -1328641136, now seen corresponding path program 1 times [2022-11-16 10:56:00,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 10:56:00,913 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1524996802] [2022-11-16 10:56:00,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:56:00,913 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 10:56:00,913 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f28bad-eeb0-418e-bca1-6d1e01a5868a/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 10:56:00,914 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f28bad-eeb0-418e-bca1-6d1e01a5868a/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 10:56:00,919 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f28bad-eeb0-418e-bca1-6d1e01a5868a/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-16 10:56:00,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:00,994 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-16 10:56:00,996 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 10:56:01,145 INFO L321 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-11-16 10:56:01,146 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 18 [2022-11-16 10:56:01,178 INFO L321 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-11-16 10:56:01,179 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 18 [2022-11-16 10:56:01,312 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-16 10:56:01,313 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 10 [2022-11-16 10:56:01,327 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-16 10:56:01,327 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 10 [2022-11-16 10:56:01,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 10:56:01,354 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 10:56:01,354 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 10:56:01,355 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1524996802] [2022-11-16 10:56:01,355 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1524996802] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:56:01,355 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 10:56:01,355 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 10:56:01,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527035820] [2022-11-16 10:56:01,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:56:01,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 10:56:01,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 10:56:01,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 10:56:01,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-16 10:56:01,357 INFO L87 Difference]: Start difference. First operand 68 states and 74 transitions. Second operand has 7 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 states have internal predecessors, (10), 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) [2022-11-16 10:56:01,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 10:56:01,623 INFO L93 Difference]: Finished difference Result 74 states and 80 transitions. [2022-11-16 10:56:01,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 10:56:01,624 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 states have internal predecessors, (10), 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 10 [2022-11-16 10:56:01,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 10:56:01,625 INFO L225 Difference]: With dead ends: 74 [2022-11-16 10:56:01,625 INFO L226 Difference]: Without dead ends: 74 [2022-11-16 10:56:01,625 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-11-16 10:56:01,626 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 5 mSDsluCounter, 215 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 272 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 45 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 10:56:01,627 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 272 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 51 Invalid, 0 Unknown, 45 Unchecked, 0.2s Time] [2022-11-16 10:56:01,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2022-11-16 10:56:01,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2022-11-16 10:56:01,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 53 states have (on average 1.509433962264151) internal successors, (80), 73 states have internal predecessors, (80), 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) [2022-11-16 10:56:01,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 80 transitions. [2022-11-16 10:56:01,632 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 80 transitions. Word has length 10 [2022-11-16 10:56:01,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 10:56:01,632 INFO L495 AbstractCegarLoop]: Abstraction has 74 states and 80 transitions. [2022-11-16 10:56:01,632 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 states have internal predecessors, (10), 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) [2022-11-16 10:56:01,632 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 80 transitions. [2022-11-16 10:56:01,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-16 10:56:01,633 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 10:56:01,633 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:56:01,647 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f28bad-eeb0-418e-bca1-6d1e01a5868a/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-16 10:56:01,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f28bad-eeb0-418e-bca1-6d1e01a5868a/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 10:56:01,835 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-16 10:56:01,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:56:01,836 INFO L85 PathProgramCache]: Analyzing trace with hash 1762075788, now seen corresponding path program 1 times [2022-11-16 10:56:01,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 10:56:01,836 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [997040151] [2022-11-16 10:56:01,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:56:01,837 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 10:56:01,837 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f28bad-eeb0-418e-bca1-6d1e01a5868a/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 10:56:01,838 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f28bad-eeb0-418e-bca1-6d1e01a5868a/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 10:56:01,846 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f28bad-eeb0-418e-bca1-6d1e01a5868a/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-16 10:56:01,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:01,949 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-16 10:56:01,952 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 10:56:02,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 10:56:02,074 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 14 treesize of output 16 [2022-11-16 10:56:02,089 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-16 10:56:02,090 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-16 10:56:02,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 10:56:02,127 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 10:56:02,127 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 10:56:02,127 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [997040151] [2022-11-16 10:56:02,128 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [997040151] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:56:02,128 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 10:56:02,128 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 10:56:02,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444959990] [2022-11-16 10:56:02,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:56:02,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 10:56:02,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 10:56:02,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 10:56:02,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-16 10:56:02,130 INFO L87 Difference]: Start difference. First operand 74 states and 80 transitions. Second operand has 6 states, 5 states have (on average 2.2) internal successors, (11), 6 states have internal predecessors, (11), 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) [2022-11-16 10:56:02,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 10:56:02,390 INFO L93 Difference]: Finished difference Result 82 states and 86 transitions. [2022-11-16 10:56:02,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 10:56:02,391 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 6 states have internal predecessors, (11), 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 11 [2022-11-16 10:56:02,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 10:56:02,392 INFO L225 Difference]: With dead ends: 82 [2022-11-16 10:56:02,392 INFO L226 Difference]: Without dead ends: 82 [2022-11-16 10:56:02,392 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2022-11-16 10:56:02,393 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 144 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 10:56:02,393 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 37 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 10:56:02,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2022-11-16 10:56:02,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 70. [2022-11-16 10:56:02,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 50 states have (on average 1.52) internal successors, (76), 69 states have internal predecessors, (76), 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) [2022-11-16 10:56:02,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 76 transitions. [2022-11-16 10:56:02,398 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 76 transitions. Word has length 11 [2022-11-16 10:56:02,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 10:56:02,402 INFO L495 AbstractCegarLoop]: Abstraction has 70 states and 76 transitions. [2022-11-16 10:56:02,403 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 6 states have internal predecessors, (11), 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) [2022-11-16 10:56:02,403 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 76 transitions. [2022-11-16 10:56:02,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-16 10:56:02,404 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 10:56:02,404 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:56:02,422 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f28bad-eeb0-418e-bca1-6d1e01a5868a/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-11-16 10:56:02,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f28bad-eeb0-418e-bca1-6d1e01a5868a/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 10:56:02,622 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-16 10:56:02,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:56:02,623 INFO L85 PathProgramCache]: Analyzing trace with hash 1870051159, now seen corresponding path program 1 times [2022-11-16 10:56:02,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 10:56:02,623 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1331335954] [2022-11-16 10:56:02,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:56:02,623 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 10:56:02,624 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f28bad-eeb0-418e-bca1-6d1e01a5868a/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 10:56:02,625 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f28bad-eeb0-418e-bca1-6d1e01a5868a/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 10:56:02,638 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f28bad-eeb0-418e-bca1-6d1e01a5868a/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-11-16 10:56:02,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:02,742 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-16 10:56:02,746 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 10:56:02,847 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 11 treesize of output 7 [2022-11-16 10:56:02,877 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2022-11-16 10:56:02,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 10:56:02,889 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 10:56:02,889 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 10:56:02,889 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1331335954] [2022-11-16 10:56:02,891 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1331335954] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:56:02,891 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 10:56:02,891 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 10:56:02,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885697822] [2022-11-16 10:56:02,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:56:02,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 10:56:02,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 10:56:02,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 10:56:02,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-16 10:56:02,894 INFO L87 Difference]: Start difference. First operand 70 states and 76 transitions. Second operand has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 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) [2022-11-16 10:56:03,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 10:56:03,241 INFO L93 Difference]: Finished difference Result 78 states and 82 transitions. [2022-11-16 10:56:03,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 10:56:03,241 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 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 17 [2022-11-16 10:56:03,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 10:56:03,242 INFO L225 Difference]: With dead ends: 78 [2022-11-16 10:56:03,242 INFO L226 Difference]: Without dead ends: 78 [2022-11-16 10:56:03,242 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-16 10:56:03,243 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 135 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 10:56:03,244 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 72 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-16 10:56:03,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2022-11-16 10:56:03,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 69. [2022-11-16 10:56:03,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 50 states have (on average 1.5) internal successors, (75), 68 states have internal predecessors, (75), 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) [2022-11-16 10:56:03,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 75 transitions. [2022-11-16 10:56:03,248 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 75 transitions. Word has length 17 [2022-11-16 10:56:03,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 10:56:03,248 INFO L495 AbstractCegarLoop]: Abstraction has 69 states and 75 transitions. [2022-11-16 10:56:03,249 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 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) [2022-11-16 10:56:03,249 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 75 transitions. [2022-11-16 10:56:03,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-16 10:56:03,249 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 10:56:03,249 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:56:03,265 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f28bad-eeb0-418e-bca1-6d1e01a5868a/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-11-16 10:56:03,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f28bad-eeb0-418e-bca1-6d1e01a5868a/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 10:56:03,461 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-16 10:56:03,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:56:03,461 INFO L85 PathProgramCache]: Analyzing trace with hash 1870051160, now seen corresponding path program 1 times [2022-11-16 10:56:03,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 10:56:03,462 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [592368569] [2022-11-16 10:56:03,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:56:03,462 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 10:56:03,462 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f28bad-eeb0-418e-bca1-6d1e01a5868a/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 10:56:03,463 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f28bad-eeb0-418e-bca1-6d1e01a5868a/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 10:56:03,491 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f28bad-eeb0-418e-bca1-6d1e01a5868a/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-16 10:56:03,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:03,567 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-16 10:56:03,577 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 10:56:03,705 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 11 treesize of output 7 [2022-11-16 10:56:03,713 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 11 treesize of output 7 [2022-11-16 10:56:03,766 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2022-11-16 10:56:03,775 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-16 10:56:03,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 10:56:03,795 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 10:56:03,795 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 10:56:03,795 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [592368569] [2022-11-16 10:56:03,796 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [592368569] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:56:03,796 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 10:56:03,796 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 10:56:03,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59310101] [2022-11-16 10:56:03,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:56:03,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 10:56:03,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 10:56:03,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 10:56:03,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-16 10:56:03,797 INFO L87 Difference]: Start difference. First operand 69 states and 75 transitions. Second operand has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 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) [2022-11-16 10:56:04,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 10:56:04,187 INFO L93 Difference]: Finished difference Result 80 states and 84 transitions. [2022-11-16 10:56:04,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 10:56:04,188 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 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 17 [2022-11-16 10:56:04,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 10:56:04,188 INFO L225 Difference]: With dead ends: 80 [2022-11-16 10:56:04,189 INFO L226 Difference]: Without dead ends: 80 [2022-11-16 10:56:04,189 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-16 10:56:04,189 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 104 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 10:56:04,190 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 77 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-16 10:56:04,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2022-11-16 10:56:04,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 68. [2022-11-16 10:56:04,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 50 states have (on average 1.48) internal successors, (74), 67 states have internal predecessors, (74), 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) [2022-11-16 10:56:04,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 74 transitions. [2022-11-16 10:56:04,194 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 74 transitions. Word has length 17 [2022-11-16 10:56:04,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 10:56:04,194 INFO L495 AbstractCegarLoop]: Abstraction has 68 states and 74 transitions. [2022-11-16 10:56:04,195 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 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) [2022-11-16 10:56:04,195 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 74 transitions. [2022-11-16 10:56:04,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-16 10:56:04,195 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 10:56:04,195 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:56:04,214 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f28bad-eeb0-418e-bca1-6d1e01a5868a/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-11-16 10:56:04,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f28bad-eeb0-418e-bca1-6d1e01a5868a/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 10:56:04,403 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-16 10:56:04,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:56:04,403 INFO L85 PathProgramCache]: Analyzing trace with hash 1843001263, now seen corresponding path program 1 times [2022-11-16 10:56:04,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 10:56:04,404 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1028897418] [2022-11-16 10:56:04,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:56:04,404 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 10:56:04,404 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f28bad-eeb0-418e-bca1-6d1e01a5868a/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 10:56:04,405 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f28bad-eeb0-418e-bca1-6d1e01a5868a/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 10:56:04,410 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f28bad-eeb0-418e-bca1-6d1e01a5868a/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-11-16 10:56:04,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:04,513 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-16 10:56:04,517 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 10:56:04,622 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 11 treesize of output 7 [2022-11-16 10:56:04,642 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2022-11-16 10:56:04,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 10:56:04,651 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 10:56:04,651 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 10:56:04,651 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1028897418] [2022-11-16 10:56:04,651 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1028897418] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:56:04,652 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 10:56:04,652 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 10:56:04,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674389273] [2022-11-16 10:56:04,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:56:04,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 10:56:04,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 10:56:04,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 10:56:04,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 10:56:04,654 INFO L87 Difference]: Start difference. First operand 68 states and 74 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 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) [2022-11-16 10:56:04,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 10:56:04,914 INFO L93 Difference]: Finished difference Result 62 states and 64 transitions. [2022-11-16 10:56:04,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 10:56:04,915 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 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 19 [2022-11-16 10:56:04,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 10:56:04,915 INFO L225 Difference]: With dead ends: 62 [2022-11-16 10:56:04,915 INFO L226 Difference]: Without dead ends: 62 [2022-11-16 10:56:04,916 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-16 10:56:04,916 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 63 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 10:56:04,916 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 89 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 10:56:04,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2022-11-16 10:56:04,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2022-11-16 10:56:04,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 44 states have (on average 1.4545454545454546) internal successors, (64), 61 states have internal predecessors, (64), 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) [2022-11-16 10:56:04,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 64 transitions. [2022-11-16 10:56:04,920 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 64 transitions. Word has length 19 [2022-11-16 10:56:04,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 10:56:04,920 INFO L495 AbstractCegarLoop]: Abstraction has 62 states and 64 transitions. [2022-11-16 10:56:04,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 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) [2022-11-16 10:56:04,920 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 64 transitions. [2022-11-16 10:56:04,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-16 10:56:04,921 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 10:56:04,921 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:56:04,938 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f28bad-eeb0-418e-bca1-6d1e01a5868a/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-11-16 10:56:05,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f28bad-eeb0-418e-bca1-6d1e01a5868a/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 10:56:05,122 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-16 10:56:05,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:56:05,122 INFO L85 PathProgramCache]: Analyzing trace with hash 673311177, now seen corresponding path program 1 times [2022-11-16 10:56:05,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 10:56:05,123 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [813939848] [2022-11-16 10:56:05,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:56:05,123 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 10:56:05,123 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f28bad-eeb0-418e-bca1-6d1e01a5868a/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 10:56:05,124 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f28bad-eeb0-418e-bca1-6d1e01a5868a/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 10:56:05,136 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f28bad-eeb0-418e-bca1-6d1e01a5868a/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-11-16 10:56:05,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:05,247 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-16 10:56:05,248 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 10:56:05,339 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 11 treesize of output 7 [2022-11-16 10:56:05,378 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-16 10:56:05,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 10:56:05,403 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 10:56:05,403 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 10:56:05,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [813939848] [2022-11-16 10:56:05,403 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [813939848] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:56:05,403 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 10:56:05,403 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 10:56:05,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589178205] [2022-11-16 10:56:05,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:56:05,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 10:56:05,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 10:56:05,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 10:56:05,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 10:56:05,404 INFO L87 Difference]: Start difference. First operand 62 states and 64 transitions. Second operand has 5 states, 4 states have (on average 5.0) internal successors, (20), 5 states have internal predecessors, (20), 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) [2022-11-16 10:56:05,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 10:56:05,612 INFO L93 Difference]: Finished difference Result 61 states and 63 transitions. [2022-11-16 10:56:05,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 10:56:05,613 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.0) internal successors, (20), 5 states have internal predecessors, (20), 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 20 [2022-11-16 10:56:05,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 10:56:05,613 INFO L225 Difference]: With dead ends: 61 [2022-11-16 10:56:05,613 INFO L226 Difference]: Without dead ends: 61 [2022-11-16 10:56:05,614 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-16 10:56:05,614 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 60 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 10:56:05,614 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 81 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 10:56:05,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2022-11-16 10:56:05,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2022-11-16 10:56:05,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 44 states have (on average 1.4318181818181819) internal successors, (63), 60 states have internal predecessors, (63), 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) [2022-11-16 10:56:05,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 63 transitions. [2022-11-16 10:56:05,617 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 63 transitions. Word has length 20 [2022-11-16 10:56:05,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 10:56:05,617 INFO L495 AbstractCegarLoop]: Abstraction has 61 states and 63 transitions. [2022-11-16 10:56:05,617 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.0) internal successors, (20), 5 states have internal predecessors, (20), 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) [2022-11-16 10:56:05,618 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 63 transitions. [2022-11-16 10:56:05,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-16 10:56:05,618 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 10:56:05,618 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:56:05,640 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f28bad-eeb0-418e-bca1-6d1e01a5868a/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-11-16 10:56:05,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f28bad-eeb0-418e-bca1-6d1e01a5868a/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 10:56:05,819 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-16 10:56:05,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:56:05,819 INFO L85 PathProgramCache]: Analyzing trace with hash -602189896, now seen corresponding path program 1 times [2022-11-16 10:56:05,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 10:56:05,820 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1533292164] [2022-11-16 10:56:05,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:56:05,820 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 10:56:05,820 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f28bad-eeb0-418e-bca1-6d1e01a5868a/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 10:56:05,821 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f28bad-eeb0-418e-bca1-6d1e01a5868a/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 10:56:05,831 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f28bad-eeb0-418e-bca1-6d1e01a5868a/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-11-16 10:56:05,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:05,937 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-16 10:56:05,939 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 10:56:06,094 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 11 treesize of output 7 [2022-11-16 10:56:06,169 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2022-11-16 10:56:06,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 10:56:06,199 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 10:56:06,199 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 10:56:06,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1533292164] [2022-11-16 10:56:06,200 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1533292164] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:56:06,200 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 10:56:06,200 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 10:56:06,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041337659] [2022-11-16 10:56:06,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:56:06,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 10:56:06,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 10:56:06,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 10:56:06,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-16 10:56:06,201 INFO L87 Difference]: Start difference. First operand 61 states and 63 transitions. Second operand has 6 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 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) [2022-11-16 10:56:06,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 10:56:06,575 INFO L93 Difference]: Finished difference Result 60 states and 62 transitions. [2022-11-16 10:56:06,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 10:56:06,576 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 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 21 [2022-11-16 10:56:06,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 10:56:06,577 INFO L225 Difference]: With dead ends: 60 [2022-11-16 10:56:06,577 INFO L226 Difference]: Without dead ends: 60 [2022-11-16 10:56:06,577 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-11-16 10:56:06,578 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 110 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 10:56:06,578 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 65 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-16 10:56:06,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2022-11-16 10:56:06,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2022-11-16 10:56:06,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 44 states have (on average 1.4090909090909092) internal successors, (62), 59 states have internal predecessors, (62), 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) [2022-11-16 10:56:06,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 62 transitions. [2022-11-16 10:56:06,580 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 62 transitions. Word has length 21 [2022-11-16 10:56:06,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 10:56:06,581 INFO L495 AbstractCegarLoop]: Abstraction has 60 states and 62 transitions. [2022-11-16 10:56:06,581 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 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) [2022-11-16 10:56:06,581 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 62 transitions. [2022-11-16 10:56:06,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-16 10:56:06,581 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 10:56:06,581 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:56:06,600 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f28bad-eeb0-418e-bca1-6d1e01a5868a/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-11-16 10:56:06,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f28bad-eeb0-418e-bca1-6d1e01a5868a/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 10:56:06,782 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-16 10:56:06,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:56:06,783 INFO L85 PathProgramCache]: Analyzing trace with hash 717052317, now seen corresponding path program 1 times [2022-11-16 10:56:06,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 10:56:06,783 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [907955601] [2022-11-16 10:56:06,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:56:06,783 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 10:56:06,783 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f28bad-eeb0-418e-bca1-6d1e01a5868a/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 10:56:06,784 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f28bad-eeb0-418e-bca1-6d1e01a5868a/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 10:56:06,785 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f28bad-eeb0-418e-bca1-6d1e01a5868a/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-11-16 10:56:06,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:06,899 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-16 10:56:06,916 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 10:56:06,994 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 11 treesize of output 7 [2022-11-16 10:56:07,033 INFO L321 Elim1Store]: treesize reduction 29, result has 27.5 percent of original size [2022-11-16 10:56:07,036 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 24 [2022-11-16 10:56:07,130 INFO L321 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-11-16 10:56:07,130 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 22 [2022-11-16 10:56:07,251 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-16 10:56:07,251 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 14 [2022-11-16 10:56:07,310 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 10:56:07,311 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 10:56:07,421 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 32 [2022-11-16 10:56:07,583 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 10:56:07,584 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 10:56:07,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [907955601] [2022-11-16 10:56:07,584 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [907955601] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 10:56:07,584 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 10:56:07,584 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2022-11-16 10:56:07,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123456583] [2022-11-16 10:56:07,585 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 10:56:07,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-16 10:56:07,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 10:56:07,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-16 10:56:07,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2022-11-16 10:56:07,586 INFO L87 Difference]: Start difference. First operand 60 states and 62 transitions. Second operand has 13 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 13 states have internal predecessors, (31), 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) [2022-11-16 10:56:08,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 10:56:08,309 INFO L93 Difference]: Finished difference Result 108 states and 113 transitions. [2022-11-16 10:56:08,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 10:56:08,310 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 13 states have internal predecessors, (31), 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 21 [2022-11-16 10:56:08,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 10:56:08,311 INFO L225 Difference]: With dead ends: 108 [2022-11-16 10:56:08,311 INFO L226 Difference]: Without dead ends: 108 [2022-11-16 10:56:08,311 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2022-11-16 10:56:08,312 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 116 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 180 SdHoareTripleChecker+Invalid, 315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 73 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-16 10:56:08,312 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 180 Invalid, 315 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 238 Invalid, 0 Unknown, 73 Unchecked, 0.5s Time] [2022-11-16 10:56:08,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2022-11-16 10:56:08,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 73. [2022-11-16 10:56:08,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 57 states have (on average 1.368421052631579) internal successors, (78), 72 states have internal predecessors, (78), 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) [2022-11-16 10:56:08,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 78 transitions. [2022-11-16 10:56:08,315 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 78 transitions. Word has length 21 [2022-11-16 10:56:08,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 10:56:08,316 INFO L495 AbstractCegarLoop]: Abstraction has 73 states and 78 transitions. [2022-11-16 10:56:08,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 13 states have internal predecessors, (31), 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) [2022-11-16 10:56:08,316 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 78 transitions. [2022-11-16 10:56:08,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-16 10:56:08,316 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 10:56:08,317 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:56:08,346 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f28bad-eeb0-418e-bca1-6d1e01a5868a/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-11-16 10:56:08,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f28bad-eeb0-418e-bca1-6d1e01a5868a/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 10:56:08,534 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-16 10:56:08,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:56:08,535 INFO L85 PathProgramCache]: Analyzing trace with hash 717052318, now seen corresponding path program 1 times [2022-11-16 10:56:08,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 10:56:08,535 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1062878564] [2022-11-16 10:56:08,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:56:08,536 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 10:56:08,536 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f28bad-eeb0-418e-bca1-6d1e01a5868a/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 10:56:08,537 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f28bad-eeb0-418e-bca1-6d1e01a5868a/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 10:56:08,543 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f28bad-eeb0-418e-bca1-6d1e01a5868a/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-11-16 10:56:08,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:08,686 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 30 conjunts are in the unsatisfiable core [2022-11-16 10:56:08,690 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 10:56:08,849 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 11 treesize of output 7 [2022-11-16 10:56:08,859 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 11 treesize of output 7 [2022-11-16 10:56:08,937 INFO L321 Elim1Store]: treesize reduction 6, result has 57.1 percent of original size [2022-11-16 10:56:08,938 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 17 [2022-11-16 10:56:08,949 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 16 treesize of output 18 [2022-11-16 10:56:09,074 INFO L321 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-11-16 10:56:09,075 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 24 [2022-11-16 10:56:09,108 INFO L321 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-11-16 10:56:09,109 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 18 [2022-11-16 10:56:09,211 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2022-11-16 10:56:09,217 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 15 treesize of output 7 [2022-11-16 10:56:09,246 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 10:56:09,246 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 10:56:11,923 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 32 [2022-11-16 10:56:11,984 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 62 [2022-11-16 10:56:11,989 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 102 treesize of output 94 [2022-11-16 10:56:22,025 WARN L233 SmtUtils]: Spent 8.46s on a formula simplification. DAG size of input: 59 DAG size of output: 30 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 10:56:22,200 INFO L321 Elim1Store]: treesize reduction 7, result has 77.4 percent of original size [2022-11-16 10:56:22,200 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 48 treesize of output 65 [2022-11-16 10:56:22,216 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 55 treesize of output 51 [2022-11-16 10:56:22,511 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 10:56:22,511 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 10:56:22,512 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1062878564] [2022-11-16 10:56:22,512 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1062878564] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 10:56:22,512 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 10:56:22,512 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2022-11-16 10:56:22,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048493772] [2022-11-16 10:56:22,513 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 10:56:22,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-16 10:56:22,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 10:56:22,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-16 10:56:22,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2022-11-16 10:56:22,514 INFO L87 Difference]: Start difference. First operand 73 states and 78 transitions. Second operand has 16 states, 15 states have (on average 2.6666666666666665) internal successors, (40), 16 states have internal predecessors, (40), 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) [2022-11-16 10:56:25,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 10:56:25,036 INFO L93 Difference]: Finished difference Result 91 states and 96 transitions. [2022-11-16 10:56:25,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-16 10:56:25,037 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.6666666666666665) internal successors, (40), 16 states have internal predecessors, (40), 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 21 [2022-11-16 10:56:25,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 10:56:25,038 INFO L225 Difference]: With dead ends: 91 [2022-11-16 10:56:25,038 INFO L226 Difference]: Without dead ends: 91 [2022-11-16 10:56:25,038 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 13.1s TimeCoverageRelationStatistics Valid=123, Invalid=477, Unknown=0, NotChecked=0, Total=600 [2022-11-16 10:56:25,039 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 143 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 312 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 242 SdHoareTripleChecker+Invalid, 439 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 312 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 119 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-16 10:56:25,039 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 242 Invalid, 439 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 312 Invalid, 0 Unknown, 119 Unchecked, 1.4s Time] [2022-11-16 10:56:25,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2022-11-16 10:56:25,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 72. [2022-11-16 10:56:25,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 57 states have (on average 1.3333333333333333) internal successors, (76), 71 states have internal predecessors, (76), 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) [2022-11-16 10:56:25,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 76 transitions. [2022-11-16 10:56:25,043 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 76 transitions. Word has length 21 [2022-11-16 10:56:25,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 10:56:25,043 INFO L495 AbstractCegarLoop]: Abstraction has 72 states and 76 transitions. [2022-11-16 10:56:25,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.6666666666666665) internal successors, (40), 16 states have internal predecessors, (40), 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) [2022-11-16 10:56:25,043 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 76 transitions. [2022-11-16 10:56:25,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-16 10:56:25,044 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 10:56:25,044 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:56:25,058 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f28bad-eeb0-418e-bca1-6d1e01a5868a/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-11-16 10:56:25,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f28bad-eeb0-418e-bca1-6d1e01a5868a/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 10:56:25,259 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-16 10:56:25,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:56:25,260 INFO L85 PathProgramCache]: Analyzing trace with hash -1488017493, now seen corresponding path program 1 times [2022-11-16 10:56:25,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 10:56:25,260 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [68734740] [2022-11-16 10:56:25,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:56:25,260 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 10:56:25,260 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f28bad-eeb0-418e-bca1-6d1e01a5868a/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 10:56:25,261 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f28bad-eeb0-418e-bca1-6d1e01a5868a/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 10:56:25,262 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f28bad-eeb0-418e-bca1-6d1e01a5868a/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-11-16 10:56:25,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:25,373 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-16 10:56:25,375 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 10:56:25,484 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 11 treesize of output 7 [2022-11-16 10:56:25,528 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2022-11-16 10:56:25,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 10:56:25,549 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 10:56:25,549 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 10:56:25,549 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [68734740] [2022-11-16 10:56:25,549 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [68734740] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:56:25,549 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 10:56:25,549 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 10:56:25,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438310468] [2022-11-16 10:56:25,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:56:25,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 10:56:25,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 10:56:25,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 10:56:25,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-16 10:56:25,550 INFO L87 Difference]: Start difference. First operand 72 states and 76 transitions. Second operand has 6 states, 5 states have (on average 4.4) internal successors, (22), 6 states have internal predecessors, (22), 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) [2022-11-16 10:56:25,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 10:56:25,935 INFO L93 Difference]: Finished difference Result 71 states and 75 transitions. [2022-11-16 10:56:25,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 10:56:25,935 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.4) internal successors, (22), 6 states have internal predecessors, (22), 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 22 [2022-11-16 10:56:25,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 10:56:25,936 INFO L225 Difference]: With dead ends: 71 [2022-11-16 10:56:25,936 INFO L226 Difference]: Without dead ends: 71 [2022-11-16 10:56:25,936 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-16 10:56:25,937 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 70 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 10:56:25,937 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 65 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-16 10:56:25,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2022-11-16 10:56:25,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2022-11-16 10:56:25,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 57 states have (on average 1.3157894736842106) internal successors, (75), 70 states have internal predecessors, (75), 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) [2022-11-16 10:56:25,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 75 transitions. [2022-11-16 10:56:25,940 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 75 transitions. Word has length 22 [2022-11-16 10:56:25,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 10:56:25,941 INFO L495 AbstractCegarLoop]: Abstraction has 71 states and 75 transitions. [2022-11-16 10:56:25,941 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.4) internal successors, (22), 6 states have internal predecessors, (22), 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) [2022-11-16 10:56:25,941 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 75 transitions. [2022-11-16 10:56:25,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-16 10:56:25,942 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 10:56:25,942 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:56:25,955 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f28bad-eeb0-418e-bca1-6d1e01a5868a/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2022-11-16 10:56:26,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f28bad-eeb0-418e-bca1-6d1e01a5868a/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 10:56:26,151 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-16 10:56:26,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:56:26,151 INFO L85 PathProgramCache]: Analyzing trace with hash 1116098075, now seen corresponding path program 1 times [2022-11-16 10:56:26,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 10:56:26,152 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [176814823] [2022-11-16 10:56:26,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:56:26,152 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 10:56:26,152 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f28bad-eeb0-418e-bca1-6d1e01a5868a/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 10:56:26,153 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f28bad-eeb0-418e-bca1-6d1e01a5868a/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 10:56:26,158 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f28bad-eeb0-418e-bca1-6d1e01a5868a/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-11-16 10:56:26,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:26,283 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-16 10:56:26,285 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 10:56:26,291 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-16 10:56:26,336 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-16 10:56:26,337 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-16 10:56:26,454 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 11 treesize of output 7 [2022-11-16 10:56:26,537 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2022-11-16 10:56:26,582 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 14 treesize of output 20 [2022-11-16 10:56:26,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 10:56:26,587 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 10:56:26,587 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 10:56:26,587 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [176814823] [2022-11-16 10:56:26,587 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [176814823] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:56:26,587 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 10:56:26,588 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 10:56:26,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927401585] [2022-11-16 10:56:26,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:56:26,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 10:56:26,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 10:56:26,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 10:56:26,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-16 10:56:26,589 INFO L87 Difference]: Start difference. First operand 71 states and 75 transitions. Second operand has 6 states, 5 states have (on average 4.6) internal successors, (23), 6 states have internal predecessors, (23), 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) [2022-11-16 10:56:26,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 10:56:26,963 INFO L93 Difference]: Finished difference Result 70 states and 74 transitions. [2022-11-16 10:56:26,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 10:56:26,963 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.6) internal successors, (23), 6 states have internal predecessors, (23), 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 23 [2022-11-16 10:56:26,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 10:56:26,964 INFO L225 Difference]: With dead ends: 70 [2022-11-16 10:56:26,964 INFO L226 Difference]: Without dead ends: 70 [2022-11-16 10:56:26,964 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2022-11-16 10:56:26,965 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 97 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 10:56:26,965 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 48 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-16 10:56:26,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2022-11-16 10:56:26,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2022-11-16 10:56:26,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 57 states have (on average 1.2982456140350878) internal successors, (74), 69 states have internal predecessors, (74), 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) [2022-11-16 10:56:26,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 74 transitions. [2022-11-16 10:56:26,968 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 74 transitions. Word has length 23 [2022-11-16 10:56:26,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 10:56:26,969 INFO L495 AbstractCegarLoop]: Abstraction has 70 states and 74 transitions. [2022-11-16 10:56:26,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.6) internal successors, (23), 6 states have internal predecessors, (23), 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) [2022-11-16 10:56:26,969 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 74 transitions. [2022-11-16 10:56:26,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-16 10:56:26,970 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 10:56:26,970 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:56:26,982 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f28bad-eeb0-418e-bca1-6d1e01a5868a/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-11-16 10:56:27,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f28bad-eeb0-418e-bca1-6d1e01a5868a/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 10:56:27,182 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr26REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-16 10:56:27,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:56:27,182 INFO L85 PathProgramCache]: Analyzing trace with hash 1116098076, now seen corresponding path program 1 times [2022-11-16 10:56:27,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 10:56:27,183 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [711168407] [2022-11-16 10:56:27,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:56:27,183 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 10:56:27,184 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f28bad-eeb0-418e-bca1-6d1e01a5868a/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 10:56:27,185 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f28bad-eeb0-418e-bca1-6d1e01a5868a/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 10:56:27,189 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f28bad-eeb0-418e-bca1-6d1e01a5868a/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-11-16 10:56:27,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:27,311 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 10:56:27,313 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 10:56:27,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 10:56:27,456 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 10:56:27,457 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 10:56:27,457 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [711168407] [2022-11-16 10:56:27,457 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [711168407] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:56:27,457 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 10:56:27,457 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 10:56:27,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497119090] [2022-11-16 10:56:27,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:56:27,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 10:56:27,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 10:56:27,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 10:56:27,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 10:56:27,459 INFO L87 Difference]: Start difference. First operand 70 states and 74 transitions. Second operand has 4 states, 3 states have (on average 7.666666666666667) internal successors, (23), 4 states have internal predecessors, (23), 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) [2022-11-16 10:56:27,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 10:56:27,601 INFO L93 Difference]: Finished difference Result 65 states and 69 transitions. [2022-11-16 10:56:27,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 10:56:27,602 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.666666666666667) internal successors, (23), 4 states have internal predecessors, (23), 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 23 [2022-11-16 10:56:27,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 10:56:27,602 INFO L225 Difference]: With dead ends: 65 [2022-11-16 10:56:27,602 INFO L226 Difference]: Without dead ends: 65 [2022-11-16 10:56:27,603 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 10:56:27,603 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 66 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 10:56:27,603 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 28 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 10:56:27,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2022-11-16 10:56:27,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2022-11-16 10:56:27,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 57 states have (on average 1.2105263157894737) internal successors, (69), 64 states have internal predecessors, (69), 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) [2022-11-16 10:56:27,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 69 transitions. [2022-11-16 10:56:27,607 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 69 transitions. Word has length 23 [2022-11-16 10:56:27,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 10:56:27,607 INFO L495 AbstractCegarLoop]: Abstraction has 65 states and 69 transitions. [2022-11-16 10:56:27,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.666666666666667) internal successors, (23), 4 states have internal predecessors, (23), 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) [2022-11-16 10:56:27,608 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 69 transitions. [2022-11-16 10:56:27,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-16 10:56:27,609 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 10:56:27,609 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:56:27,623 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f28bad-eeb0-418e-bca1-6d1e01a5868a/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Ended with exit code 0 [2022-11-16 10:56:27,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f28bad-eeb0-418e-bca1-6d1e01a5868a/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 10:56:27,815 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-16 10:56:27,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:56:27,815 INFO L85 PathProgramCache]: Analyzing trace with hash -599596191, now seen corresponding path program 1 times [2022-11-16 10:56:27,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 10:56:27,816 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [234721097] [2022-11-16 10:56:27,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:56:27,816 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 10:56:27,817 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f28bad-eeb0-418e-bca1-6d1e01a5868a/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 10:56:27,818 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f28bad-eeb0-418e-bca1-6d1e01a5868a/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 10:56:27,826 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f28bad-eeb0-418e-bca1-6d1e01a5868a/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-11-16 10:56:28,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 10:56:28,031 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 10:56:28,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 10:56:28,175 INFO L130 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2022-11-16 10:56:28,176 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-16 10:56:28,177 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_LEAK (40 of 41 remaining) [2022-11-16 10:56:28,179 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (39 of 41 remaining) [2022-11-16 10:56:28,180 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (38 of 41 remaining) [2022-11-16 10:56:28,180 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (37 of 41 remaining) [2022-11-16 10:56:28,180 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (36 of 41 remaining) [2022-11-16 10:56:28,180 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (35 of 41 remaining) [2022-11-16 10:56:28,181 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (34 of 41 remaining) [2022-11-16 10:56:28,181 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (33 of 41 remaining) [2022-11-16 10:56:28,181 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (32 of 41 remaining) [2022-11-16 10:56:28,181 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (31 of 41 remaining) [2022-11-16 10:56:28,182 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (30 of 41 remaining) [2022-11-16 10:56:28,182 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (29 of 41 remaining) [2022-11-16 10:56:28,182 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (28 of 41 remaining) [2022-11-16 10:56:28,182 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (27 of 41 remaining) [2022-11-16 10:56:28,183 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (26 of 41 remaining) [2022-11-16 10:56:28,183 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (25 of 41 remaining) [2022-11-16 10:56:28,183 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (24 of 41 remaining) [2022-11-16 10:56:28,183 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 41 remaining) [2022-11-16 10:56:28,183 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 41 remaining) [2022-11-16 10:56:28,184 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 41 remaining) [2022-11-16 10:56:28,184 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 41 remaining) [2022-11-16 10:56:28,184 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 41 remaining) [2022-11-16 10:56:28,184 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 41 remaining) [2022-11-16 10:56:28,185 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_FREE (17 of 41 remaining) [2022-11-16 10:56:28,185 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_FREE (16 of 41 remaining) [2022-11-16 10:56:28,185 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_FREE (15 of 41 remaining) [2022-11-16 10:56:28,185 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 41 remaining) [2022-11-16 10:56:28,185 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr26REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 41 remaining) [2022-11-16 10:56:28,186 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr27REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 41 remaining) [2022-11-16 10:56:28,186 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 41 remaining) [2022-11-16 10:56:28,186 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 41 remaining) [2022-11-16 10:56:28,186 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr30REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 41 remaining) [2022-11-16 10:56:28,187 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr31REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 41 remaining) [2022-11-16 10:56:28,187 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr32REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 41 remaining) [2022-11-16 10:56:28,187 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr33REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 41 remaining) [2022-11-16 10:56:28,187 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr34REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 41 remaining) [2022-11-16 10:56:28,187 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_FREE (4 of 41 remaining) [2022-11-16 10:56:28,188 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE (3 of 41 remaining) [2022-11-16 10:56:28,188 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_FREE (2 of 41 remaining) [2022-11-16 10:56:28,188 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr38REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 41 remaining) [2022-11-16 10:56:28,188 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr39REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 41 remaining) [2022-11-16 10:56:28,204 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f28bad-eeb0-418e-bca1-6d1e01a5868a/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2022-11-16 10:56:28,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f28bad-eeb0-418e-bca1-6d1e01a5868a/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 10:56:28,400 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:56:28,403 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-16 10:56:28,438 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.11 10:56:28 BoogieIcfgContainer [2022-11-16 10:56:28,439 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-16 10:56:28,440 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-16 10:56:28,440 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-16 10:56:28,450 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-16 10:56:28,451 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 10:55:57" (3/4) ... [2022-11-16 10:56:28,454 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-16 10:56:28,455 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-16 10:56:28,455 INFO L158 Benchmark]: Toolchain (without parser) took 32049.42ms. Allocated memory was 60.8MB in the beginning and 113.2MB in the end (delta: 52.4MB). Free memory was 38.6MB in the beginning and 84.5MB in the end (delta: -45.9MB). Peak memory consumption was 5.8MB. Max. memory is 16.1GB. [2022-11-16 10:56:28,456 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 60.8MB. Free memory is still 41.9MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 10:56:28,456 INFO L158 Benchmark]: CACSL2BoogieTranslator took 585.18ms. Allocated memory is still 60.8MB. Free memory was 38.3MB in the beginning and 37.6MB in the end (delta: 753.6kB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-16 10:56:28,456 INFO L158 Benchmark]: Boogie Procedure Inliner took 70.08ms. Allocated memory is still 60.8MB. Free memory was 37.4MB in the beginning and 35.4MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 10:56:28,457 INFO L158 Benchmark]: Boogie Preprocessor took 54.15ms. Allocated memory is still 60.8MB. Free memory was 35.4MB in the beginning and 33.7MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 10:56:28,457 INFO L158 Benchmark]: RCFGBuilder took 840.43ms. Allocated memory was 60.8MB in the beginning and 77.6MB in the end (delta: 16.8MB). Free memory was 33.7MB in the beginning and 43.6MB in the end (delta: -9.9MB). Peak memory consumption was 10.3MB. Max. memory is 16.1GB. [2022-11-16 10:56:28,457 INFO L158 Benchmark]: TraceAbstraction took 30469.42ms. Allocated memory was 77.6MB in the beginning and 113.2MB in the end (delta: 35.7MB). Free memory was 43.0MB in the beginning and 84.5MB in the end (delta: -41.5MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 10:56:28,458 INFO L158 Benchmark]: Witness Printer took 15.31ms. Allocated memory is still 113.2MB. Free memory is still 84.5MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 10:56:28,459 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 60.8MB. Free memory is still 41.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 585.18ms. Allocated memory is still 60.8MB. Free memory was 38.3MB in the beginning and 37.6MB in the end (delta: 753.6kB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 70.08ms. Allocated memory is still 60.8MB. Free memory was 37.4MB in the beginning and 35.4MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 54.15ms. Allocated memory is still 60.8MB. Free memory was 35.4MB in the beginning and 33.7MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 840.43ms. Allocated memory was 60.8MB in the beginning and 77.6MB in the end (delta: 16.8MB). Free memory was 33.7MB in the beginning and 43.6MB in the end (delta: -9.9MB). Peak memory consumption was 10.3MB. Max. memory is 16.1GB. * TraceAbstraction took 30469.42ms. Allocated memory was 77.6MB in the beginning and 113.2MB in the end (delta: 35.7MB). Free memory was 43.0MB in the beginning and 84.5MB in the end (delta: -41.5MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 15.31ms. Allocated memory is still 113.2MB. Free memory is still 84.5MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 537]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 537. Possible FailurePath: [L539] struct item *list = ((void *)0); VAL [list={10:0}] [L541] CALL append(&list) [L530] struct item *item = malloc(sizeof *item); [L531] EXPR \read(**plist) VAL [\read(**plist)={0:0}, item={3:0}, plist={10:0}, plist={10:0}] [L531] item->next = *plist VAL [\read(**plist)={0:0}, item={3:0}, plist={10:0}, plist={10:0}] [L532] EXPR item->next VAL [item={3:0}, item->next={0:0}, plist={10:0}, plist={10:0}] [L532-L534] EXPR (item->next) ? item->next->data : malloc(sizeof *item) [L532-L534] EXPR (item->next) ? item->next->data : malloc(sizeof *item) VAL [(item->next) ? item->next->data : malloc(sizeof *item)={7:0}, item={3:0}, item->next={0:0}, malloc(sizeof *item)={7:0}, plist={10:0}, plist={10:0}] [L532-L534] item->data = (item->next) ? item->next->data : malloc(sizeof *item) VAL [(item->next) ? item->next->data : malloc(sizeof *item)={7:0}, item={3:0}, item->next={0:0}, malloc(sizeof *item)={7:0}, plist={10:0}, plist={10:0}] [L535] *plist = item VAL [item={3:0}, plist={10:0}, plist={10:0}] [L541] RET append(&list) [L542] COND FALSE !(__VERIFIER_nondet_int()) [L543] \read(*list) VAL [\read(*list)={3:0}, list={10:0}] [L543] COND TRUE \read(*list) [L544] EXPR \read(*list) VAL [\read(*list)={3:0}, list={10:0}] [L544] EXPR list->next VAL [\read(*list)={3:0}, list={10:0}, list->next={0:0}] [L544] struct item *next = list->next; [L545] EXPR \read(*list) VAL [\read(*list)={3:0}, list={10:0}, next={0:0}] [L545] free(list) VAL [\read(*list)={3:0}, list={10:0}, next={0:0}] [L545] free(list) VAL [\read(*list)={3:0}, list={10:0}, next={0:0}] [L545] free(list) [L546] list = next VAL [list={10:0}, next={0:0}] [L548] \read(*list) VAL [\read(*list)={0:0}, list={10:0}, next={0:0}] [L548] COND FALSE !(\read(*list)) [L553] return 0; [L539] struct item *list = ((void *)0); [L553] return 0; VAL [\result=0, next={0:0}] - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 545]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 545]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 545]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 550]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 550]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 550]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 81 locations, 41 error locations. Started 1 CEGAR loops. OverallTime: 30.4s, OverallIterations: 17, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 7.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1489 SdHoareTripleChecker+Valid, 5.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1489 mSDsluCounter, 1482 SdHoareTripleChecker+Invalid, 4.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 237 IncrementalHoareTripleChecker+Unchecked, 940 mSDsCounter, 73 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1635 IncrementalHoareTripleChecker+Invalid, 1945 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 73 mSolverCounterUnsat, 542 mSDtfsCounter, 1635 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 304 GetRequests, 200 SyntacticMatches, 1 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 14.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=81occurred in iteration=0, InterpolantAutomatonStates: 95, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 16 MinimizatonAttempts, 186 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 17.0s InterpolantComputationTime, 270 NumberOfCodeBlocks, 270 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 267 ConstructedInterpolants, 16 QuantifiedInterpolants, 3123 SizeOfPredicates, 121 NumberOfNonLiveVariables, 1643 ConjunctsInSsa, 185 ConjunctsInUnsatCore, 18 InterpolantComputations, 14 PerfectInterpolantSequences, 4/24 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-11-16 10:56:28,499 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f28bad-eeb0-418e-bca1-6d1e01a5868a/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample