./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/memsafety/test-0235-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2794ba63-fd96-4ede-a891-c232c833c625/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2794ba63-fd96-4ede-a891-c232c833c625/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2794ba63-fd96-4ede-a891-c232c833c625/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2794ba63-fd96-4ede-a891-c232c833c625/bin/uautomizer-TMbwUNV5ro/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety/test-0235-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2794ba63-fd96-4ede-a891-c232c833c625/bin/uautomizer-TMbwUNV5ro/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2794ba63-fd96-4ede-a891-c232c833c625/bin/uautomizer-TMbwUNV5ro --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 6e8dd9d71aae7a8c83467a9093ad4bffb4ddd59cddc2d90362f34ff651f24f9a --- 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-8393723 [2022-11-18 19:39:03,080 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 19:39:03,082 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 19:39:03,109 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 19:39:03,109 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 19:39:03,110 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 19:39:03,112 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 19:39:03,114 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 19:39:03,116 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 19:39:03,117 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 19:39:03,118 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 19:39:03,120 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 19:39:03,120 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 19:39:03,121 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 19:39:03,123 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 19:39:03,124 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 19:39:03,125 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 19:39:03,126 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 19:39:03,128 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 19:39:03,130 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 19:39:03,132 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 19:39:03,136 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 19:39:03,141 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 19:39:03,142 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 19:39:03,146 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 19:39:03,151 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 19:39:03,151 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 19:39:03,152 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 19:39:03,154 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 19:39:03,155 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 19:39:03,156 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 19:39:03,157 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 19:39:03,158 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 19:39:03,160 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 19:39:03,161 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 19:39:03,162 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 19:39:03,163 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 19:39:03,164 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 19:39:03,164 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 19:39:03,165 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 19:39:03,165 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 19:39:03,166 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2794ba63-fd96-4ede-a891-c232c833c625/bin/uautomizer-TMbwUNV5ro/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-11-18 19:39:03,193 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 19:39:03,194 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 19:39:03,194 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 19:39:03,194 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 19:39:03,195 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 19:39:03,195 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 19:39:03,196 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 19:39:03,196 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 19:39:03,196 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 19:39:03,197 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 19:39:03,197 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 19:39:03,197 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-18 19:39:03,197 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 19:39:03,198 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 19:39:03,198 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 19:39:03,198 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-18 19:39:03,198 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-18 19:39:03,199 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-18 19:39:03,199 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 19:39:03,199 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-18 19:39:03,199 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 19:39:03,200 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 19:39:03,200 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 19:39:03,200 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 19:39:03,200 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 19:39:03,201 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 19:39:03,201 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 19:39:03,201 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 19:39:03,201 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 19:39:03,202 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 19:39:03,202 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_2794ba63-fd96-4ede-a891-c232c833c625/bin/uautomizer-TMbwUNV5ro/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2794ba63-fd96-4ede-a891-c232c833c625/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6e8dd9d71aae7a8c83467a9093ad4bffb4ddd59cddc2d90362f34ff651f24f9a [2022-11-18 19:39:03,486 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 19:39:03,524 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 19:39:03,527 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 19:39:03,530 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 19:39:03,531 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 19:39:03,532 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2794ba63-fd96-4ede-a891-c232c833c625/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/memsafety/test-0235-1.i [2022-11-18 19:39:03,615 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2794ba63-fd96-4ede-a891-c232c833c625/bin/uautomizer-TMbwUNV5ro/data/579eaf2cb/2552a4c553eb4969afdf9a320228fbe9/FLAG4541e955e [2022-11-18 19:39:04,190 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 19:39:04,191 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2794ba63-fd96-4ede-a891-c232c833c625/sv-benchmarks/c/memsafety/test-0235-1.i [2022-11-18 19:39:04,205 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2794ba63-fd96-4ede-a891-c232c833c625/bin/uautomizer-TMbwUNV5ro/data/579eaf2cb/2552a4c553eb4969afdf9a320228fbe9/FLAG4541e955e [2022-11-18 19:39:04,492 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2794ba63-fd96-4ede-a891-c232c833c625/bin/uautomizer-TMbwUNV5ro/data/579eaf2cb/2552a4c553eb4969afdf9a320228fbe9 [2022-11-18 19:39:04,495 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 19:39:04,496 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 19:39:04,505 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 19:39:04,505 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 19:39:04,509 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 19:39:04,510 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:39:04" (1/1) ... [2022-11-18 19:39:04,511 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7043d27e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:39:04, skipping insertion in model container [2022-11-18 19:39:04,511 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:39:04" (1/1) ... [2022-11-18 19:39:04,518 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 19:39:04,554 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 19:39:05,085 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 19:39:05,099 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 19:39:05,169 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 19:39:05,218 INFO L208 MainTranslator]: Completed translation [2022-11-18 19:39:05,219 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:39:05 WrapperNode [2022-11-18 19:39:05,219 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 19:39:05,220 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 19:39:05,220 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 19:39:05,220 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 19:39:05,229 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:39:05" (1/1) ... [2022-11-18 19:39:05,245 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:39:05" (1/1) ... [2022-11-18 19:39:05,293 INFO L138 Inliner]: procedures = 188, calls = 69, calls flagged for inlining = 13, calls inlined = 13, statements flattened = 234 [2022-11-18 19:39:05,294 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 19:39:05,295 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 19:39:05,295 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 19:39:05,295 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 19:39:05,304 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:39:05" (1/1) ... [2022-11-18 19:39:05,304 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:39:05" (1/1) ... [2022-11-18 19:39:05,321 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:39:05" (1/1) ... [2022-11-18 19:39:05,324 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:39:05" (1/1) ... [2022-11-18 19:39:05,336 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:39:05" (1/1) ... [2022-11-18 19:39:05,355 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:39:05" (1/1) ... [2022-11-18 19:39:05,359 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:39:05" (1/1) ... [2022-11-18 19:39:05,366 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:39:05" (1/1) ... [2022-11-18 19:39:05,369 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 19:39:05,373 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 19:39:05,373 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 19:39:05,373 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 19:39:05,374 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:39:05" (1/1) ... [2022-11-18 19:39:05,382 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 19:39:05,393 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2794ba63-fd96-4ede-a891-c232c833c625/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:39:05,412 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2794ba63-fd96-4ede-a891-c232c833c625/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 19:39:05,419 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2794ba63-fd96-4ede-a891-c232c833c625/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 19:39:05,456 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-18 19:39:05,456 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 19:39:05,457 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-18 19:39:05,457 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-18 19:39:05,458 INFO L130 BoogieDeclarations]: Found specification of procedure zalloc_or_die [2022-11-18 19:39:05,458 INFO L138 BoogieDeclarations]: Found implementation of procedure zalloc_or_die [2022-11-18 19:39:05,458 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 19:39:05,458 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-18 19:39:05,459 INFO L130 BoogieDeclarations]: Found specification of procedure l0_destroy [2022-11-18 19:39:05,459 INFO L138 BoogieDeclarations]: Found implementation of procedure l0_destroy [2022-11-18 19:39:05,459 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 19:39:05,459 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 19:39:05,460 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 19:39:05,663 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 19:39:05,667 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 19:39:06,386 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 19:39:06,394 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 19:39:06,394 INFO L300 CfgBuilder]: Removed 10 assume(true) statements. [2022-11-18 19:39:06,397 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:39:06 BoogieIcfgContainer [2022-11-18 19:39:06,397 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 19:39:06,403 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 19:39:06,404 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 19:39:06,407 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 19:39:06,408 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 07:39:04" (1/3) ... [2022-11-18 19:39:06,409 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fad6b9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 07:39:06, skipping insertion in model container [2022-11-18 19:39:06,409 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:39:05" (2/3) ... [2022-11-18 19:39:06,410 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fad6b9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 07:39:06, skipping insertion in model container [2022-11-18 19:39:06,410 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:39:06" (3/3) ... [2022-11-18 19:39:06,414 INFO L112 eAbstractionObserver]: Analyzing ICFG test-0235-1.i [2022-11-18 19:39:06,439 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 19:39:06,439 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 85 error locations. [2022-11-18 19:39:06,493 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 19:39:06,500 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;@28c8d46b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 19:39:06,500 INFO L358 AbstractCegarLoop]: Starting to check reachability of 85 error locations. [2022-11-18 19:39:06,505 INFO L276 IsEmpty]: Start isEmpty. Operand has 233 states, 134 states have (on average 1.873134328358209) internal successors, (251), 219 states have internal predecessors, (251), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-18 19:39:06,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-18 19:39:06,512 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:39:06,513 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-18 19:39:06,514 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr32REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 82 more)] === [2022-11-18 19:39:06,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:39:06,521 INFO L85 PathProgramCache]: Analyzing trace with hash 930118, now seen corresponding path program 1 times [2022-11-18 19:39:06,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:39:06,531 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088684590] [2022-11-18 19:39:06,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:39:06,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:39:06,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:39:06,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:39:06,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:39:06,670 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088684590] [2022-11-18 19:39:06,670 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2088684590] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:39:06,670 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:39:06,671 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 19:39:06,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890447167] [2022-11-18 19:39:06,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:39:06,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-18 19:39:06,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:39:06,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-18 19:39:06,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-18 19:39:06,709 INFO L87 Difference]: Start difference. First operand has 233 states, 134 states have (on average 1.873134328358209) internal successors, (251), 219 states have internal predecessors, (251), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) Second operand has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:39:06,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:39:06,747 INFO L93 Difference]: Finished difference Result 233 states and 262 transitions. [2022-11-18 19:39:06,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-18 19:39:06,749 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-11-18 19:39:06,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:39:06,758 INFO L225 Difference]: With dead ends: 233 [2022-11-18 19:39:06,758 INFO L226 Difference]: Without dead ends: 231 [2022-11-18 19:39:06,760 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-18 19:39:06,763 INFO L413 NwaCegarLoop]: 262 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 262 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 19:39:06,764 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 262 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 19:39:06,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2022-11-18 19:39:06,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 231. [2022-11-18 19:39:06,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 133 states have (on average 1.7894736842105263) internal successors, (238), 217 states have internal predecessors, (238), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-18 19:39:06,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 260 transitions. [2022-11-18 19:39:06,815 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 260 transitions. Word has length 4 [2022-11-18 19:39:06,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:39:06,815 INFO L495 AbstractCegarLoop]: Abstraction has 231 states and 260 transitions. [2022-11-18 19:39:06,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:39:06,816 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 260 transitions. [2022-11-18 19:39:06,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-18 19:39:06,816 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:39:06,816 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-18 19:39:06,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 19:39:06,817 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting zalloc_or_dieErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 82 more)] === [2022-11-18 19:39:06,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:39:06,818 INFO L85 PathProgramCache]: Analyzing trace with hash 889932981, now seen corresponding path program 1 times [2022-11-18 19:39:06,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:39:06,818 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288053058] [2022-11-18 19:39:06,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:39:06,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:39:06,836 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:39:06,836 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [132590101] [2022-11-18 19:39:06,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:39:06,837 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:39:06,837 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2794ba63-fd96-4ede-a891-c232c833c625/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:39:06,840 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2794ba63-fd96-4ede-a891-c232c833c625/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:39:06,874 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2794ba63-fd96-4ede-a891-c232c833c625/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 19:39:06,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:39:06,971 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-18 19:39:06,977 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:39:07,043 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 [2022-11-18 19:39:07,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:39:07,055 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:39:07,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:39:07,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288053058] [2022-11-18 19:39:07,057 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:39:07,063 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [132590101] [2022-11-18 19:39:07,063 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [132590101] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:39:07,064 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:39:07,064 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 19:39:07,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160851666] [2022-11-18 19:39:07,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:39:07,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:39:07,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:39:07,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:39:07,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:39:07,071 INFO L87 Difference]: Start difference. First operand 231 states and 260 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:39:07,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:39:07,232 INFO L93 Difference]: Finished difference Result 230 states and 259 transitions. [2022-11-18 19:39:07,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:39:07,233 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-18 19:39:07,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:39:07,264 INFO L225 Difference]: With dead ends: 230 [2022-11-18 19:39:07,264 INFO L226 Difference]: Without dead ends: 230 [2022-11-18 19:39:07,265 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:39:07,266 INFO L413 NwaCegarLoop]: 254 mSDtfsCounter, 9 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 418 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 19:39:07,266 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 418 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 19:39:07,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2022-11-18 19:39:07,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 230. [2022-11-18 19:39:07,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230 states, 133 states have (on average 1.781954887218045) internal successors, (237), 216 states have internal predecessors, (237), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-18 19:39:07,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 259 transitions. [2022-11-18 19:39:07,282 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 259 transitions. Word has length 6 [2022-11-18 19:39:07,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:39:07,282 INFO L495 AbstractCegarLoop]: Abstraction has 230 states and 259 transitions. [2022-11-18 19:39:07,282 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:39:07,282 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 259 transitions. [2022-11-18 19:39:07,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-18 19:39:07,283 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:39:07,283 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:39:07,295 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2794ba63-fd96-4ede-a891-c232c833c625/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-18 19:39:07,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2794ba63-fd96-4ede-a891-c232c833c625/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:39:07,488 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 82 more)] === [2022-11-18 19:39:07,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:39:07,489 INFO L85 PathProgramCache]: Analyzing trace with hash 1818119056, now seen corresponding path program 1 times [2022-11-18 19:39:07,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:39:07,489 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125229489] [2022-11-18 19:39:07,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:39:07,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:39:07,513 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:39:07,523 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [853825748] [2022-11-18 19:39:07,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:39:07,525 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:39:07,526 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2794ba63-fd96-4ede-a891-c232c833c625/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:39:07,527 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2794ba63-fd96-4ede-a891-c232c833c625/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:39:07,554 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2794ba63-fd96-4ede-a891-c232c833c625/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-18 19:39:07,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:39:07,631 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-18 19:39:07,636 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:39:07,708 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-18 19:39:07,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:39:07,741 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:39:07,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:39:07,741 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125229489] [2022-11-18 19:39:07,742 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:39:07,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [853825748] [2022-11-18 19:39:07,742 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [853825748] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:39:07,743 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:39:07,743 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:39:07,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127628601] [2022-11-18 19:39:07,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:39:07,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:39:07,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:39:07,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:39:07,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:39:07,745 INFO L87 Difference]: Start difference. First operand 230 states and 259 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:39:07,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:39:07,955 INFO L93 Difference]: Finished difference Result 239 states and 268 transitions. [2022-11-18 19:39:07,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 19:39:07,956 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-18 19:39:07,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:39:07,957 INFO L225 Difference]: With dead ends: 239 [2022-11-18 19:39:07,957 INFO L226 Difference]: Without dead ends: 239 [2022-11-18 19:39:07,958 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:39:07,959 INFO L413 NwaCegarLoop]: 248 mSDtfsCounter, 16 mSDsluCounter, 429 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 677 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 19:39:07,959 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 677 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 19:39:07,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2022-11-18 19:39:07,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 239. [2022-11-18 19:39:07,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 141 states have (on average 1.7446808510638299) internal successors, (246), 224 states have internal predecessors, (246), 11 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-18 19:39:07,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 268 transitions. [2022-11-18 19:39:07,974 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 268 transitions. Word has length 7 [2022-11-18 19:39:07,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:39:07,974 INFO L495 AbstractCegarLoop]: Abstraction has 239 states and 268 transitions. [2022-11-18 19:39:07,975 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:39:07,975 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 268 transitions. [2022-11-18 19:39:07,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-18 19:39:07,977 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:39:07,977 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:39:07,984 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2794ba63-fd96-4ede-a891-c232c833c625/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-18 19:39:08,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2794ba63-fd96-4ede-a891-c232c833c625/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:39:08,183 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 82 more)] === [2022-11-18 19:39:08,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:39:08,184 INFO L85 PathProgramCache]: Analyzing trace with hash 253014343, now seen corresponding path program 1 times [2022-11-18 19:39:08,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:39:08,184 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119237048] [2022-11-18 19:39:08,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:39:08,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:39:08,218 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:39:08,224 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [922095422] [2022-11-18 19:39:08,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:39:08,225 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:39:08,225 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2794ba63-fd96-4ede-a891-c232c833c625/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:39:08,226 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2794ba63-fd96-4ede-a891-c232c833c625/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:39:08,254 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2794ba63-fd96-4ede-a891-c232c833c625/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-18 19:39:08,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:39:08,458 INFO L263 TraceCheckSpWp]: Trace formula consists of 504 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-18 19:39:08,463 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:39:08,549 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-18 19:39:08,599 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 [2022-11-18 19:39:08,814 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 42 [2022-11-18 19:39:18,103 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2022-11-18 19:39:18,103 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:39:18,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:39:18,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119237048] [2022-11-18 19:39:18,104 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:39:18,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [922095422] [2022-11-18 19:39:18,104 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [922095422] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:39:18,104 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:39:18,104 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 19:39:18,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109169212] [2022-11-18 19:39:18,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:39:18,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 19:39:18,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:39:18,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 19:39:18,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=11, Unknown=2, NotChecked=0, Total=20 [2022-11-18 19:39:18,106 INFO L87 Difference]: Start difference. First operand 239 states and 268 transitions. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 19:39:18,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:39:18,151 INFO L93 Difference]: Finished difference Result 251 states and 280 transitions. [2022-11-18 19:39:18,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:39:18,152 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) Word has length 66 [2022-11-18 19:39:18,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:39:18,154 INFO L225 Difference]: With dead ends: 251 [2022-11-18 19:39:18,154 INFO L226 Difference]: Without dead ends: 241 [2022-11-18 19:39:18,154 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.4s TimeCoverageRelationStatistics Valid=7, Invalid=11, Unknown=2, NotChecked=0, Total=20 [2022-11-18 19:39:18,155 INFO L413 NwaCegarLoop]: 254 mSDtfsCounter, 0 mSDsluCounter, 675 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 929 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 88 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 19:39:18,156 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 929 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 7 Invalid, 0 Unknown, 88 Unchecked, 0.0s Time] [2022-11-18 19:39:18,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2022-11-18 19:39:18,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 241. [2022-11-18 19:39:18,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 241 states, 143 states have (on average 1.7342657342657342) internal successors, (248), 226 states have internal predecessors, (248), 11 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-18 19:39:18,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 270 transitions. [2022-11-18 19:39:18,166 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 270 transitions. Word has length 66 [2022-11-18 19:39:18,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:39:18,166 INFO L495 AbstractCegarLoop]: Abstraction has 241 states and 270 transitions. [2022-11-18 19:39:18,167 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 19:39:18,167 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 270 transitions. [2022-11-18 19:39:18,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-11-18 19:39:18,169 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:39:18,169 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:39:18,185 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2794ba63-fd96-4ede-a891-c232c833c625/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-18 19:39:18,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2794ba63-fd96-4ede-a891-c232c833c625/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:39:18,385 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 82 more)] === [2022-11-18 19:39:18,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:39:18,386 INFO L85 PathProgramCache]: Analyzing trace with hash 851001466, now seen corresponding path program 1 times [2022-11-18 19:39:18,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:39:18,386 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576288565] [2022-11-18 19:39:18,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:39:18,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:39:18,443 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:39:18,446 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [185705974] [2022-11-18 19:39:18,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:39:18,447 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:39:18,447 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2794ba63-fd96-4ede-a891-c232c833c625/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:39:18,448 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2794ba63-fd96-4ede-a891-c232c833c625/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:39:18,470 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2794ba63-fd96-4ede-a891-c232c833c625/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-18 19:39:18,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:39:18,733 INFO L263 TraceCheckSpWp]: Trace formula consists of 579 conjuncts, 29 conjunts are in the unsatisfiable core [2022-11-18 19:39:18,740 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:39:18,778 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-18 19:39:18,832 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 13 treesize of output 9 [2022-11-18 19:39:18,959 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 92 proven. 7 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-11-18 19:39:18,959 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:39:19,487 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 48 proven. 12 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2022-11-18 19:39:19,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:39:19,488 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576288565] [2022-11-18 19:39:19,488 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:39:19,489 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [185705974] [2022-11-18 19:39:19,489 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [185705974] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:39:19,489 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 19:39:19,489 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 11 [2022-11-18 19:39:19,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026265732] [2022-11-18 19:39:19,490 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 19:39:19,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-18 19:39:19,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:39:19,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-18 19:39:19,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2022-11-18 19:39:19,492 INFO L87 Difference]: Start difference. First operand 241 states and 270 transitions. Second operand has 11 states, 11 states have (on average 4.636363636363637) internal successors, (51), 11 states have internal predecessors, (51), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-18 19:39:20,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:39:20,261 INFO L93 Difference]: Finished difference Result 267 states and 298 transitions. [2022-11-18 19:39:20,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 19:39:20,262 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.636363636363637) internal successors, (51), 11 states have internal predecessors, (51), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 71 [2022-11-18 19:39:20,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:39:20,263 INFO L225 Difference]: With dead ends: 267 [2022-11-18 19:39:20,263 INFO L226 Difference]: Without dead ends: 247 [2022-11-18 19:39:20,264 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=87, Invalid=185, Unknown=0, NotChecked=0, Total=272 [2022-11-18 19:39:20,264 INFO L413 NwaCegarLoop]: 247 mSDtfsCounter, 72 mSDsluCounter, 1145 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 1392 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-18 19:39:20,265 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 1392 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-18 19:39:20,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2022-11-18 19:39:20,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 247. [2022-11-18 19:39:20,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 247 states, 149 states have (on average 1.7046979865771812) internal successors, (254), 232 states have internal predecessors, (254), 11 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-18 19:39:20,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 276 transitions. [2022-11-18 19:39:20,298 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 276 transitions. Word has length 71 [2022-11-18 19:39:20,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:39:20,299 INFO L495 AbstractCegarLoop]: Abstraction has 247 states and 276 transitions. [2022-11-18 19:39:20,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.636363636363637) internal successors, (51), 11 states have internal predecessors, (51), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-18 19:39:20,299 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 276 transitions. [2022-11-18 19:39:20,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-11-18 19:39:20,304 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:39:20,305 INFO L195 NwaCegarLoop]: trace histogram [20, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:39:20,312 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2794ba63-fd96-4ede-a891-c232c833c625/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-18 19:39:20,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2794ba63-fd96-4ede-a891-c232c833c625/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:39:20,512 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 82 more)] === [2022-11-18 19:39:20,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:39:20,512 INFO L85 PathProgramCache]: Analyzing trace with hash 678119687, now seen corresponding path program 2 times [2022-11-18 19:39:20,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:39:20,513 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740306819] [2022-11-18 19:39:20,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:39:20,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:39:20,551 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:39:20,551 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [543398732] [2022-11-18 19:39:20,552 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 19:39:20,552 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:39:20,552 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2794ba63-fd96-4ede-a891-c232c833c625/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:39:20,553 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2794ba63-fd96-4ede-a891-c232c833c625/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:39:20,559 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2794ba63-fd96-4ede-a891-c232c833c625/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-18 19:39:21,312 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 19:39:21,312 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:39:21,317 INFO L263 TraceCheckSpWp]: Trace formula consists of 804 conjuncts, 31 conjunts are in the unsatisfiable core [2022-11-18 19:39:21,322 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:39:21,351 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 [2022-11-18 19:39:21,394 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 13 treesize of output 9 [2022-11-18 19:39:21,716 INFO L134 CoverageAnalysis]: Checked inductivity of 395 backedges. 135 proven. 10 refuted. 0 times theorem prover too weak. 250 trivial. 0 not checked. [2022-11-18 19:39:21,716 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:39:22,424 INFO L134 CoverageAnalysis]: Checked inductivity of 395 backedges. 15 proven. 138 refuted. 0 times theorem prover too weak. 242 trivial. 0 not checked. [2022-11-18 19:39:22,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:39:22,425 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740306819] [2022-11-18 19:39:22,425 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:39:22,425 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [543398732] [2022-11-18 19:39:22,426 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [543398732] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:39:22,426 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 19:39:22,426 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2022-11-18 19:39:22,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337113466] [2022-11-18 19:39:22,427 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 19:39:22,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-18 19:39:22,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:39:22,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-18 19:39:22,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2022-11-18 19:39:22,431 INFO L87 Difference]: Start difference. First operand 247 states and 276 transitions. Second operand has 16 states, 16 states have (on average 3.4375) internal successors, (55), 16 states have internal predecessors, (55), 2 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-18 19:39:24,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:39:24,284 INFO L93 Difference]: Finished difference Result 267 states and 298 transitions. [2022-11-18 19:39:24,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-18 19:39:24,285 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.4375) internal successors, (55), 16 states have internal predecessors, (55), 2 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) Word has length 86 [2022-11-18 19:39:24,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:39:24,287 INFO L225 Difference]: With dead ends: 267 [2022-11-18 19:39:24,287 INFO L226 Difference]: Without dead ends: 252 [2022-11-18 19:39:24,287 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=268, Invalid=662, Unknown=0, NotChecked=0, Total=930 [2022-11-18 19:39:24,288 INFO L413 NwaCegarLoop]: 247 mSDtfsCounter, 73 mSDsluCounter, 2513 mSDsCounter, 0 mSdLazyCounter, 413 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 2760 SdHoareTripleChecker+Invalid, 440 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 413 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-18 19:39:24,288 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 2760 Invalid, 440 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 413 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-18 19:39:24,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2022-11-18 19:39:24,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 252. [2022-11-18 19:39:24,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252 states, 154 states have (on average 1.6818181818181819) internal successors, (259), 237 states have internal predecessors, (259), 11 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-18 19:39:24,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 281 transitions. [2022-11-18 19:39:24,296 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 281 transitions. Word has length 86 [2022-11-18 19:39:24,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:39:24,297 INFO L495 AbstractCegarLoop]: Abstraction has 252 states and 281 transitions. [2022-11-18 19:39:24,297 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.4375) internal successors, (55), 16 states have internal predecessors, (55), 2 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-18 19:39:24,297 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 281 transitions. [2022-11-18 19:39:24,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-11-18 19:39:24,299 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:39:24,299 INFO L195 NwaCegarLoop]: trace histogram [40, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:39:24,323 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2794ba63-fd96-4ede-a891-c232c833c625/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-18 19:39:24,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2794ba63-fd96-4ede-a891-c232c833c625/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-18 19:39:24,515 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 82 more)] === [2022-11-18 19:39:24,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:39:24,516 INFO L85 PathProgramCache]: Analyzing trace with hash 1486586055, now seen corresponding path program 3 times [2022-11-18 19:39:24,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:39:24,516 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269661462] [2022-11-18 19:39:24,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:39:24,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:39:24,588 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:39:24,592 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1082691745] [2022-11-18 19:39:24,593 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 19:39:24,593 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:39:24,593 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2794ba63-fd96-4ede-a891-c232c833c625/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:39:24,595 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2794ba63-fd96-4ede-a891-c232c833c625/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:39:24,622 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2794ba63-fd96-4ede-a891-c232c833c625/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-18 19:39:24,806 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-18 19:39:24,806 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:39:24,811 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-18 19:39:24,815 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:39:24,844 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-18 19:39:24,897 INFO L134 CoverageAnalysis]: Checked inductivity of 1085 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 1070 trivial. 0 not checked. [2022-11-18 19:39:24,898 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:39:24,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:39:24,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269661462] [2022-11-18 19:39:24,898 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:39:24,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1082691745] [2022-11-18 19:39:24,898 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1082691745] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:39:24,899 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:39:24,899 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:39:24,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518808233] [2022-11-18 19:39:24,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:39:24,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:39:24,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:39:24,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:39:24,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:39:24,900 INFO L87 Difference]: Start difference. First operand 252 states and 281 transitions. Second operand has 4 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-11-18 19:39:25,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:39:25,178 INFO L93 Difference]: Finished difference Result 251 states and 280 transitions. [2022-11-18 19:39:25,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 19:39:25,178 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 106 [2022-11-18 19:39:25,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:39:25,180 INFO L225 Difference]: With dead ends: 251 [2022-11-18 19:39:25,180 INFO L226 Difference]: Without dead ends: 251 [2022-11-18 19:39:25,181 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:39:25,181 INFO L413 NwaCegarLoop]: 246 mSDtfsCounter, 16 mSDsluCounter, 415 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 661 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 19:39:25,182 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 661 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 19:39:25,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2022-11-18 19:39:25,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 251. [2022-11-18 19:39:25,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251 states, 154 states have (on average 1.6753246753246753) internal successors, (258), 236 states have internal predecessors, (258), 11 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-18 19:39:25,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 280 transitions. [2022-11-18 19:39:25,189 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 280 transitions. Word has length 106 [2022-11-18 19:39:25,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:39:25,190 INFO L495 AbstractCegarLoop]: Abstraction has 251 states and 280 transitions. [2022-11-18 19:39:25,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-11-18 19:39:25,191 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 280 transitions. [2022-11-18 19:39:25,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-11-18 19:39:25,192 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:39:25,192 INFO L195 NwaCegarLoop]: trace histogram [45, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:39:25,210 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2794ba63-fd96-4ede-a891-c232c833c625/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-18 19:39:25,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2794ba63-fd96-4ede-a891-c232c833c625/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-18 19:39:25,399 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 82 more)] === [2022-11-18 19:39:25,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:39:25,399 INFO L85 PathProgramCache]: Analyzing trace with hash -2117878513, now seen corresponding path program 1 times [2022-11-18 19:39:25,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:39:25,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526819938] [2022-11-18 19:39:25,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:39:25,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:39:25,456 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:39:25,457 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [690901435] [2022-11-18 19:39:25,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:39:25,457 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:39:25,457 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2794ba63-fd96-4ede-a891-c232c833c625/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:39:25,458 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2794ba63-fd96-4ede-a891-c232c833c625/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:39:25,486 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2794ba63-fd96-4ede-a891-c232c833c625/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-18 19:39:25,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:39:25,868 INFO L263 TraceCheckSpWp]: Trace formula consists of 1208 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-18 19:39:25,872 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:39:26,062 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_1459 Int)) (= |c_#valid| (store |c_old(#valid)| |c_zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| v_ArrVal_1459))) is different from true [2022-11-18 19:39:26,260 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-18 19:39:26,260 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2022-11-18 19:39:26,292 INFO L134 CoverageAnalysis]: Checked inductivity of 1395 backedges. 601 proven. 60 refuted. 0 times theorem prover too weak. 733 trivial. 1 not checked. [2022-11-18 19:39:26,292 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:39:26,844 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-11-18 19:39:26,844 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 12 treesize of output 11 [2022-11-18 19:39:26,870 INFO L134 CoverageAnalysis]: Checked inductivity of 1395 backedges. 601 proven. 61 refuted. 0 times theorem prover too weak. 733 trivial. 0 not checked. [2022-11-18 19:39:26,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:39:26,871 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526819938] [2022-11-18 19:39:26,871 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:39:26,871 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [690901435] [2022-11-18 19:39:26,871 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [690901435] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:39:26,871 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 19:39:26,871 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 13 [2022-11-18 19:39:26,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412508336] [2022-11-18 19:39:26,872 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 19:39:26,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-18 19:39:26,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:39:26,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-18 19:39:26,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=129, Unknown=1, NotChecked=22, Total=182 [2022-11-18 19:39:26,874 INFO L87 Difference]: Start difference. First operand 251 states and 280 transitions. Second operand has 14 states, 13 states have (on average 3.769230769230769) internal successors, (49), 12 states have internal predecessors, (49), 2 states have call successors, (7), 3 states have call predecessors, (7), 4 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-18 19:39:28,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:39:28,323 INFO L93 Difference]: Finished difference Result 386 states and 445 transitions. [2022-11-18 19:39:28,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 19:39:28,323 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 3.769230769230769) internal successors, (49), 12 states have internal predecessors, (49), 2 states have call successors, (7), 3 states have call predecessors, (7), 4 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 118 [2022-11-18 19:39:28,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:39:28,334 INFO L225 Difference]: With dead ends: 386 [2022-11-18 19:39:28,334 INFO L226 Difference]: Without dead ends: 386 [2022-11-18 19:39:28,335 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 221 SyntacticMatches, 3 SemanticMatches, 17 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=62, Invalid=247, Unknown=1, NotChecked=32, Total=342 [2022-11-18 19:39:28,337 INFO L413 NwaCegarLoop]: 200 mSDtfsCounter, 214 mSDsluCounter, 1821 mSDsCounter, 0 mSdLazyCounter, 879 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 214 SdHoareTripleChecker+Valid, 2021 SdHoareTripleChecker+Invalid, 1495 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 879 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 598 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-18 19:39:28,338 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [214 Valid, 2021 Invalid, 1495 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 879 Invalid, 0 Unknown, 598 Unchecked, 1.2s Time] [2022-11-18 19:39:28,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386 states. [2022-11-18 19:39:28,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386 to 249. [2022-11-18 19:39:28,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 154 states have (on average 1.6623376623376624) internal successors, (256), 234 states have internal predecessors, (256), 11 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-18 19:39:28,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 278 transitions. [2022-11-18 19:39:28,367 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 278 transitions. Word has length 118 [2022-11-18 19:39:28,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:39:28,368 INFO L495 AbstractCegarLoop]: Abstraction has 249 states and 278 transitions. [2022-11-18 19:39:28,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 3.769230769230769) internal successors, (49), 12 states have internal predecessors, (49), 2 states have call successors, (7), 3 states have call predecessors, (7), 4 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-18 19:39:28,368 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 278 transitions. [2022-11-18 19:39:28,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-11-18 19:39:28,369 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:39:28,370 INFO L195 NwaCegarLoop]: trace histogram [45, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:39:28,378 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2794ba63-fd96-4ede-a891-c232c833c625/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-18 19:39:28,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2794ba63-fd96-4ede-a891-c232c833c625/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-11-18 19:39:28,578 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 82 more)] === [2022-11-18 19:39:28,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:39:28,579 INFO L85 PathProgramCache]: Analyzing trace with hash -2117878512, now seen corresponding path program 1 times [2022-11-18 19:39:28,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:39:28,579 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345329654] [2022-11-18 19:39:28,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:39:28,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:39:28,647 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:39:28,648 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [943150138] [2022-11-18 19:39:28,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:39:28,648 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:39:28,648 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2794ba63-fd96-4ede-a891-c232c833c625/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:39:28,651 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2794ba63-fd96-4ede-a891-c232c833c625/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:39:28,659 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2794ba63-fd96-4ede-a891-c232c833c625/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-18 19:39:31,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:39:31,712 INFO L263 TraceCheckSpWp]: Trace formula consists of 1208 conjuncts, 73 conjunts are in the unsatisfiable core [2022-11-18 19:39:31,719 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:39:31,844 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 [2022-11-18 19:39:31,891 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 [2022-11-18 19:39:39,072 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_2028 Int) (|zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| Int)) (and (= (store |c_old(#length)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| v_ArrVal_2028) |c_#length|) (= (select |c_old(#valid)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base|) 0))) is different from true [2022-11-18 19:39:39,320 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:39:39,321 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 22 treesize of output 24 [2022-11-18 19:39:39,337 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-18 19:39:39,337 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 11 treesize of output 11 [2022-11-18 19:39:40,259 INFO L134 CoverageAnalysis]: Checked inductivity of 1395 backedges. 503 proven. 316 refuted. 0 times theorem prover too weak. 473 trivial. 103 not checked. [2022-11-18 19:39:40,260 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:39:43,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:39:43,013 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345329654] [2022-11-18 19:39:43,013 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:39:43,013 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [943150138] [2022-11-18 19:39:43,014 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [943150138] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:39:43,014 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-18 19:39:43,014 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2022-11-18 19:39:43,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310947417] [2022-11-18 19:39:43,014 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-18 19:39:43,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-11-18 19:39:43,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:39:43,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-11-18 19:39:43,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=738, Unknown=2, NotChecked=54, Total=870 [2022-11-18 19:39:43,016 INFO L87 Difference]: Start difference. First operand 249 states and 278 transitions. Second operand has 28 states, 26 states have (on average 2.1153846153846154) internal successors, (55), 25 states have internal predecessors, (55), 2 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-18 19:39:48,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:39:48,999 INFO L93 Difference]: Finished difference Result 357 states and 408 transitions. [2022-11-18 19:39:48,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-18 19:39:49,000 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 26 states have (on average 2.1153846153846154) internal successors, (55), 25 states have internal predecessors, (55), 2 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) Word has length 118 [2022-11-18 19:39:49,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:39:49,002 INFO L225 Difference]: With dead ends: 357 [2022-11-18 19:39:49,002 INFO L226 Difference]: Without dead ends: 357 [2022-11-18 19:39:49,003 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 288 ImplicationChecksByTransitivity, 13.7s TimeCoverageRelationStatistics Valid=141, Invalid=1656, Unknown=13, NotChecked=82, Total=1892 [2022-11-18 19:39:49,004 INFO L413 NwaCegarLoop]: 134 mSDtfsCounter, 111 mSDsluCounter, 1491 mSDsCounter, 0 mSdLazyCounter, 913 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 1625 SdHoareTripleChecker+Invalid, 3556 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 913 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2633 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-18 19:39:49,004 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 1625 Invalid, 3556 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 913 Invalid, 0 Unknown, 2633 Unchecked, 1.4s Time] [2022-11-18 19:39:49,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357 states. [2022-11-18 19:39:49,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357 to 248. [2022-11-18 19:39:49,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 154 states have (on average 1.655844155844156) internal successors, (255), 233 states have internal predecessors, (255), 11 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-18 19:39:49,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 277 transitions. [2022-11-18 19:39:49,024 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 277 transitions. Word has length 118 [2022-11-18 19:39:49,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:39:49,024 INFO L495 AbstractCegarLoop]: Abstraction has 248 states and 277 transitions. [2022-11-18 19:39:49,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 26 states have (on average 2.1153846153846154) internal successors, (55), 25 states have internal predecessors, (55), 2 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-18 19:39:49,025 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 277 transitions. [2022-11-18 19:39:49,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-11-18 19:39:49,026 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:39:49,035 INFO L195 NwaCegarLoop]: trace histogram [45, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:39:49,068 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2794ba63-fd96-4ede-a891-c232c833c625/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-18 19:39:49,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2794ba63-fd96-4ede-a891-c232c833c625/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:39:49,259 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 82 more)] === [2022-11-18 19:39:49,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:39:49,259 INFO L85 PathProgramCache]: Analyzing trace with hash 533247536, now seen corresponding path program 1 times [2022-11-18 19:39:49,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:39:49,260 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354067589] [2022-11-18 19:39:49,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:39:49,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:39:49,324 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:39:49,334 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2048713670] [2022-11-18 19:39:49,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:39:49,335 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:39:49,335 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2794ba63-fd96-4ede-a891-c232c833c625/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:39:49,336 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2794ba63-fd96-4ede-a891-c232c833c625/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:39:49,339 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2794ba63-fd96-4ede-a891-c232c833c625/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-18 19:39:49,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:39:49,788 INFO L263 TraceCheckSpWp]: Trace formula consists of 1225 conjuncts, 33 conjunts are in the unsatisfiable core [2022-11-18 19:39:49,793 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:39:50,053 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_2608 Int)) (= |c_#valid| (store |c_old(#valid)| |c_zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| v_ArrVal_2608))) is different from true [2022-11-18 19:39:50,272 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-18 19:39:50,273 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2022-11-18 19:39:50,325 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_2609 Int)) (= |c_#valid| (store |c_old(#valid)| |c_zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| v_ArrVal_2609))) is different from true [2022-11-18 19:39:50,543 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-18 19:39:50,543 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2022-11-18 19:39:50,586 INFO L134 CoverageAnalysis]: Checked inductivity of 1395 backedges. 719 proven. 147 refuted. 0 times theorem prover too weak. 526 trivial. 3 not checked. [2022-11-18 19:39:50,586 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:39:51,513 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-11-18 19:39:51,513 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 12 treesize of output 11 [2022-11-18 19:39:51,544 INFO L134 CoverageAnalysis]: Checked inductivity of 1395 backedges. 719 proven. 149 refuted. 0 times theorem prover too weak. 527 trivial. 0 not checked. [2022-11-18 19:39:51,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:39:51,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354067589] [2022-11-18 19:39:51,545 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:39:51,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2048713670] [2022-11-18 19:39:51,545 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2048713670] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:39:51,545 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 19:39:51,545 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11] total 15 [2022-11-18 19:39:51,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987186066] [2022-11-18 19:39:51,545 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 19:39:51,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-18 19:39:51,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:39:51,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-18 19:39:51,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=154, Unknown=2, NotChecked=50, Total=240 [2022-11-18 19:39:51,547 INFO L87 Difference]: Start difference. First operand 248 states and 277 transitions. Second operand has 16 states, 15 states have (on average 3.533333333333333) internal successors, (53), 14 states have internal predecessors, (53), 2 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-18 19:39:52,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:39:52,926 INFO L93 Difference]: Finished difference Result 294 states and 329 transitions. [2022-11-18 19:39:52,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-18 19:39:52,927 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 3.533333333333333) internal successors, (53), 14 states have internal predecessors, (53), 2 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 120 [2022-11-18 19:39:52,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:39:52,929 INFO L225 Difference]: With dead ends: 294 [2022-11-18 19:39:52,929 INFO L226 Difference]: Without dead ends: 294 [2022-11-18 19:39:52,930 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 219 SyntacticMatches, 8 SemanticMatches, 24 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=125, Invalid=433, Unknown=2, NotChecked=90, Total=650 [2022-11-18 19:39:52,931 INFO L413 NwaCegarLoop]: 229 mSDtfsCounter, 150 mSDsluCounter, 1595 mSDsCounter, 0 mSdLazyCounter, 747 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 1824 SdHoareTripleChecker+Invalid, 1456 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 747 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 705 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-18 19:39:52,931 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [150 Valid, 1824 Invalid, 1456 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 747 Invalid, 0 Unknown, 705 Unchecked, 1.0s Time] [2022-11-18 19:39:52,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2022-11-18 19:39:52,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 285. [2022-11-18 19:39:52,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 285 states, 188 states have (on average 1.547872340425532) internal successors, (291), 266 states have internal predecessors, (291), 13 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2022-11-18 19:39:52,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 317 transitions. [2022-11-18 19:39:52,942 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 317 transitions. Word has length 120 [2022-11-18 19:39:52,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:39:52,943 INFO L495 AbstractCegarLoop]: Abstraction has 285 states and 317 transitions. [2022-11-18 19:39:52,943 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 3.533333333333333) internal successors, (53), 14 states have internal predecessors, (53), 2 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-18 19:39:52,943 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 317 transitions. [2022-11-18 19:39:52,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-11-18 19:39:52,949 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:39:52,949 INFO L195 NwaCegarLoop]: trace histogram [45, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:39:52,958 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2794ba63-fd96-4ede-a891-c232c833c625/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-18 19:39:53,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2794ba63-fd96-4ede-a891-c232c833c625/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-18 19:39:53,157 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 82 more)] === [2022-11-18 19:39:53,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:39:53,157 INFO L85 PathProgramCache]: Analyzing trace with hash 533247537, now seen corresponding path program 1 times [2022-11-18 19:39:53,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:39:53,157 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219577474] [2022-11-18 19:39:53,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:39:53,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:39:53,219 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:39:53,219 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1549993016] [2022-11-18 19:39:53,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:39:53,222 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:39:53,222 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2794ba63-fd96-4ede-a891-c232c833c625/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:39:53,227 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2794ba63-fd96-4ede-a891-c232c833c625/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:39:53,246 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2794ba63-fd96-4ede-a891-c232c833c625/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-18 19:39:53,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:39:53,765 INFO L263 TraceCheckSpWp]: Trace formula consists of 1225 conjuncts, 103 conjunts are in the unsatisfiable core [2022-11-18 19:39:53,771 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:39:53,866 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 [2022-11-18 19:39:53,889 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 [2022-11-18 19:40:03,238 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_3193 Int) (v_ArrVal_3194 Int) (|zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| Int)) (and (= (store |c_old(#length)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| v_ArrVal_3193) |c_#length|) (= |c_#valid| (store |c_old(#valid)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| v_ArrVal_3194)) (= (select |c_old(#valid)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base|) 0))) is different from true [2022-11-18 19:40:03,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:40:03,907 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 22 treesize of output 24 [2022-11-18 19:40:04,082 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-18 19:40:04,083 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 17 treesize of output 21 [2022-11-18 19:40:04,338 WARN L859 $PredicateComparison]: unable to prove that (exists ((|zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| Int) (v_ArrVal_3195 Int)) (and (= (store |c_old(#length)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| v_ArrVal_3195) |c_#length|) (= (select |c_old(#valid)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base|) 0))) is different from true [2022-11-18 19:40:06,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:40:06,295 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 22 treesize of output 24 [2022-11-18 19:40:06,447 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-18 19:40:06,447 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 11 treesize of output 11 [2022-11-18 19:40:07,563 INFO L134 CoverageAnalysis]: Checked inductivity of 1395 backedges. 611 proven. 324 refuted. 2 times theorem prover too weak. 283 trivial. 175 not checked. [2022-11-18 19:40:07,564 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:40:12,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:40:12,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219577474] [2022-11-18 19:40:12,443 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:40:12,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1549993016] [2022-11-18 19:40:12,443 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1549993016] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:40:12,443 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-18 19:40:12,443 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2022-11-18 19:40:12,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205141778] [2022-11-18 19:40:12,443 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-18 19:40:12,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-11-18 19:40:12,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:40:12,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-11-18 19:40:12,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=1029, Unknown=8, NotChecked=130, Total=1260 [2022-11-18 19:40:12,445 INFO L87 Difference]: Start difference. First operand 285 states and 317 transitions. Second operand has 34 states, 33 states have (on average 2.090909090909091) internal successors, (69), 32 states have internal predecessors, (69), 2 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (6), 4 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-18 19:40:17,584 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_3193 Int) (v_ArrVal_3194 Int) (|zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| Int)) (and (= (store |c_old(#length)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| v_ArrVal_3193) |c_#length|) (= |c_#valid| (store |c_old(#valid)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| v_ArrVal_3194)) (= (select |c_old(#valid)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base|) 0))) (exists ((|zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| Int) (v_ArrVal_3195 Int)) (and (= (store |c_old(#length)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| v_ArrVal_3195) |c_#length|) (= (select |c_old(#valid)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base|) 0)))) is different from true [2022-11-18 19:40:18,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:40:18,577 INFO L93 Difference]: Finished difference Result 401 states and 454 transitions. [2022-11-18 19:40:18,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-18 19:40:18,578 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 33 states have (on average 2.090909090909091) internal successors, (69), 32 states have internal predecessors, (69), 2 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (6), 4 states have call predecessors, (6), 2 states have call successors, (6) Word has length 120 [2022-11-18 19:40:18,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:40:18,580 INFO L225 Difference]: With dead ends: 401 [2022-11-18 19:40:18,580 INFO L226 Difference]: Without dead ends: 401 [2022-11-18 19:40:18,581 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 394 ImplicationChecksByTransitivity, 20.0s TimeCoverageRelationStatistics Valid=156, Invalid=1914, Unknown=12, NotChecked=270, Total=2352 [2022-11-18 19:40:18,582 INFO L413 NwaCegarLoop]: 133 mSDtfsCounter, 111 mSDsluCounter, 1385 mSDsCounter, 0 mSdLazyCounter, 545 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 1518 SdHoareTripleChecker+Invalid, 4038 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 545 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 3482 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-18 19:40:18,582 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 1518 Invalid, 4038 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 545 Invalid, 0 Unknown, 3482 Unchecked, 0.9s Time] [2022-11-18 19:40:18,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 401 states. [2022-11-18 19:40:18,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 401 to 294. [2022-11-18 19:40:18,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 294 states, 196 states have (on average 1.530612244897959) internal successors, (300), 274 states have internal predecessors, (300), 13 states have call successors, (13), 5 states have call predecessors, (13), 6 states have return successors, (14), 14 states have call predecessors, (14), 13 states have call successors, (14) [2022-11-18 19:40:18,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 327 transitions. [2022-11-18 19:40:18,604 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 327 transitions. Word has length 120 [2022-11-18 19:40:18,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:40:18,605 INFO L495 AbstractCegarLoop]: Abstraction has 294 states and 327 transitions. [2022-11-18 19:40:18,606 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 33 states have (on average 2.090909090909091) internal successors, (69), 32 states have internal predecessors, (69), 2 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (6), 4 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-18 19:40:18,606 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 327 transitions. [2022-11-18 19:40:18,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-11-18 19:40:18,608 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:40:18,608 INFO L195 NwaCegarLoop]: trace histogram [46, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:40:18,624 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2794ba63-fd96-4ede-a891-c232c833c625/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-18 19:40:18,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2794ba63-fd96-4ede-a891-c232c833c625/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:40:18,818 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 82 more)] === [2022-11-18 19:40:18,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:40:18,819 INFO L85 PathProgramCache]: Analyzing trace with hash 1448672236, now seen corresponding path program 2 times [2022-11-18 19:40:18,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:40:18,819 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036757348] [2022-11-18 19:40:18,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:40:18,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:40:18,877 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:40:18,877 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [935437942] [2022-11-18 19:40:18,877 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 19:40:18,877 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:40:18,878 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2794ba63-fd96-4ede-a891-c232c833c625/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:40:18,879 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2794ba63-fd96-4ede-a891-c232c833c625/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:40:18,901 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2794ba63-fd96-4ede-a891-c232c833c625/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-18 19:40:19,432 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 19:40:19,432 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:40:19,441 INFO L263 TraceCheckSpWp]: Trace formula consists of 1240 conjuncts, 115 conjunts are in the unsatisfiable core [2022-11-18 19:40:19,447 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:40:19,559 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 [2022-11-18 19:40:19,586 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 [2022-11-18 19:40:29,258 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-18 19:40:29,258 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 17 treesize of output 21 [2022-11-18 19:40:29,376 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 22 treesize of output 24 [2022-11-18 19:40:31,827 WARN L859 $PredicateComparison]: unable to prove that (exists ((|zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| Int) (v_ArrVal_3790 Int)) (and (= (store |c_old(#length)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| v_ArrVal_3790) |c_#length|) (= (select |c_old(#valid)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base|) 0))) is different from true [2022-11-18 19:40:34,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:40:34,349 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 24 [2022-11-18 19:40:34,520 INFO L321 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2022-11-18 19:40:34,520 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2022-11-18 19:40:35,746 INFO L134 CoverageAnalysis]: Checked inductivity of 1446 backedges. 608 proven. 549 refuted. 0 times theorem prover too weak. 275 trivial. 14 not checked. [2022-11-18 19:40:35,746 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:40:40,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:40:40,980 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036757348] [2022-11-18 19:40:40,981 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:40:40,981 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [935437942] [2022-11-18 19:40:40,981 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [935437942] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:40:40,981 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-18 19:40:40,981 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40] total 40 [2022-11-18 19:40:40,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631721701] [2022-11-18 19:40:40,981 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-18 19:40:40,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-11-18 19:40:40,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:40:40,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-11-18 19:40:40,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=1604, Unknown=7, NotChecked=80, Total=1806 [2022-11-18 19:40:40,983 INFO L87 Difference]: Start difference. First operand 294 states and 327 transitions. Second operand has 41 states, 38 states have (on average 1.8421052631578947) internal successors, (70), 38 states have internal predecessors, (70), 3 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2022-11-18 19:40:51,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:40:51,962 INFO L93 Difference]: Finished difference Result 411 states and 466 transitions. [2022-11-18 19:40:51,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-11-18 19:40:51,963 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 38 states have (on average 1.8421052631578947) internal successors, (70), 38 states have internal predecessors, (70), 3 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) Word has length 121 [2022-11-18 19:40:51,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:40:51,967 INFO L225 Difference]: With dead ends: 411 [2022-11-18 19:40:51,967 INFO L226 Difference]: Without dead ends: 411 [2022-11-18 19:40:51,968 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 83 SyntacticMatches, 4 SemanticMatches, 54 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 640 ImplicationChecksByTransitivity, 27.9s TimeCoverageRelationStatistics Valid=194, Invalid=2773, Unknown=7, NotChecked=106, Total=3080 [2022-11-18 19:40:51,969 INFO L413 NwaCegarLoop]: 128 mSDtfsCounter, 110 mSDsluCounter, 3005 mSDsCounter, 0 mSdLazyCounter, 911 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 3133 SdHoareTripleChecker+Invalid, 7211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 911 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 6289 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-18 19:40:51,970 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 3133 Invalid, 7211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 911 Invalid, 0 Unknown, 6289 Unchecked, 1.3s Time] [2022-11-18 19:40:51,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 411 states. [2022-11-18 19:40:51,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 411 to 295. [2022-11-18 19:40:51,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 295 states, 197 states have (on average 1.532994923857868) internal successors, (302), 275 states have internal predecessors, (302), 13 states have call successors, (13), 5 states have call predecessors, (13), 6 states have return successors, (14), 14 states have call predecessors, (14), 13 states have call successors, (14) [2022-11-18 19:40:51,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 329 transitions. [2022-11-18 19:40:51,991 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 329 transitions. Word has length 121 [2022-11-18 19:40:51,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:40:51,992 INFO L495 AbstractCegarLoop]: Abstraction has 295 states and 329 transitions. [2022-11-18 19:40:51,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 38 states have (on average 1.8421052631578947) internal successors, (70), 38 states have internal predecessors, (70), 3 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2022-11-18 19:40:51,992 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 329 transitions. [2022-11-18 19:40:51,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-11-18 19:40:51,993 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:40:51,994 INFO L195 NwaCegarLoop]: trace histogram [45, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:40:52,001 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2794ba63-fd96-4ede-a891-c232c833c625/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-18 19:40:52,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2794ba63-fd96-4ede-a891-c232c833c625/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:40:52,199 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 82 more)] === [2022-11-18 19:40:52,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:40:52,199 INFO L85 PathProgramCache]: Analyzing trace with hash -649195556, now seen corresponding path program 1 times [2022-11-18 19:40:52,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:40:52,200 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115136015] [2022-11-18 19:40:52,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:40:52,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:40:52,247 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:40:52,247 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1041665677] [2022-11-18 19:40:52,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:40:52,248 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:40:52,248 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2794ba63-fd96-4ede-a891-c232c833c625/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:40:52,249 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2794ba63-fd96-4ede-a891-c232c833c625/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:40:52,275 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2794ba63-fd96-4ede-a891-c232c833c625/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-18 19:40:52,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:40:52,827 INFO L263 TraceCheckSpWp]: Trace formula consists of 1233 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-18 19:40:52,831 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:40:52,989 INFO L134 CoverageAnalysis]: Checked inductivity of 1395 backedges. 352 proven. 61 refuted. 0 times theorem prover too weak. 982 trivial. 0 not checked. [2022-11-18 19:40:52,989 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:40:53,045 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6 [2022-11-18 19:40:53,240 INFO L134 CoverageAnalysis]: Checked inductivity of 1395 backedges. 352 proven. 61 refuted. 0 times theorem prover too weak. 982 trivial. 0 not checked. [2022-11-18 19:40:53,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:40:53,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115136015] [2022-11-18 19:40:53,241 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:40:53,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1041665677] [2022-11-18 19:40:53,241 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1041665677] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:40:53,241 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 19:40:53,242 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2022-11-18 19:40:53,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432238708] [2022-11-18 19:40:53,242 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 19:40:53,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 19:40:53,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:40:53,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 19:40:53,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-11-18 19:40:53,244 INFO L87 Difference]: Start difference. First operand 295 states and 329 transitions. Second operand has 10 states, 9 states have (on average 4.222222222222222) internal successors, (38), 9 states have internal predecessors, (38), 2 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-18 19:40:53,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:40:53,914 INFO L93 Difference]: Finished difference Result 313 states and 354 transitions. [2022-11-18 19:40:53,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 19:40:53,919 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 4.222222222222222) internal successors, (38), 9 states have internal predecessors, (38), 2 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) Word has length 121 [2022-11-18 19:40:53,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:40:53,921 INFO L225 Difference]: With dead ends: 313 [2022-11-18 19:40:53,921 INFO L226 Difference]: Without dead ends: 313 [2022-11-18 19:40:53,921 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 227 SyntacticMatches, 5 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2022-11-18 19:40:53,922 INFO L413 NwaCegarLoop]: 227 mSDtfsCounter, 209 mSDsluCounter, 1388 mSDsCounter, 0 mSdLazyCounter, 334 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 217 SdHoareTripleChecker+Valid, 1615 SdHoareTripleChecker+Invalid, 343 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 334 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-18 19:40:53,922 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [217 Valid, 1615 Invalid, 343 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 334 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-18 19:40:53,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2022-11-18 19:40:53,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 294. [2022-11-18 19:40:53,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 294 states, 197 states have (on average 1.5279187817258884) internal successors, (301), 274 states have internal predecessors, (301), 13 states have call successors, (13), 5 states have call predecessors, (13), 6 states have return successors, (14), 14 states have call predecessors, (14), 13 states have call successors, (14) [2022-11-18 19:40:53,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 328 transitions. [2022-11-18 19:40:53,932 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 328 transitions. Word has length 121 [2022-11-18 19:40:53,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:40:53,933 INFO L495 AbstractCegarLoop]: Abstraction has 294 states and 328 transitions. [2022-11-18 19:40:53,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 4.222222222222222) internal successors, (38), 9 states have internal predecessors, (38), 2 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-18 19:40:53,934 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 328 transitions. [2022-11-18 19:40:53,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-11-18 19:40:53,935 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:40:53,935 INFO L195 NwaCegarLoop]: trace histogram [47, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:40:53,955 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2794ba63-fd96-4ede-a891-c232c833c625/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-18 19:40:54,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2794ba63-fd96-4ede-a891-c232c833c625/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-18 19:40:54,143 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 82 more)] === [2022-11-18 19:40:54,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:40:54,144 INFO L85 PathProgramCache]: Analyzing trace with hash -237933167, now seen corresponding path program 3 times [2022-11-18 19:40:54,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:40:54,144 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605890867] [2022-11-18 19:40:54,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:40:54,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:40:54,199 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:40:54,199 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [487654573] [2022-11-18 19:40:54,199 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 19:40:54,199 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:40:54,199 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2794ba63-fd96-4ede-a891-c232c833c625/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:40:54,200 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2794ba63-fd96-4ede-a891-c232c833c625/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:40:54,207 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2794ba63-fd96-4ede-a891-c232c833c625/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-18 19:40:55,879 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-11-18 19:40:55,880 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:40:55,886 INFO L263 TraceCheckSpWp]: Trace formula consists of 560 conjuncts, 80 conjunts are in the unsatisfiable core [2022-11-18 19:40:55,892 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:40:57,079 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-18 19:40:57,080 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 17 treesize of output 21 [2022-11-18 19:40:57,096 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 [2022-11-18 19:40:57,281 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_4972 Int) (|zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| Int)) (and (= (store |c_old(#length)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| v_ArrVal_4972) |c_#length|) (= (select |c_old(#valid)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base|) 0))) is different from true [2022-11-18 19:40:57,420 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:40:57,421 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 19:40:57,456 INFO L321 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2022-11-18 19:40:57,456 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2022-11-18 19:40:57,539 INFO L134 CoverageAnalysis]: Checked inductivity of 1498 backedges. 773 proven. 88 refuted. 0 times theorem prover too weak. 479 trivial. 158 not checked. [2022-11-18 19:40:57,539 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:40:59,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:40:59,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605890867] [2022-11-18 19:40:59,874 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:40:59,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [487654573] [2022-11-18 19:40:59,874 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [487654573] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:40:59,874 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-18 19:40:59,874 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2022-11-18 19:40:59,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120674362] [2022-11-18 19:40:59,875 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-18 19:40:59,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-18 19:40:59,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:40:59,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-18 19:40:59,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=369, Unknown=1, NotChecked=38, Total=462 [2022-11-18 19:40:59,876 INFO L87 Difference]: Start difference. First operand 294 states and 328 transitions. Second operand has 20 states, 17 states have (on average 3.0) internal successors, (51), 17 states have internal predecessors, (51), 3 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2022-11-18 19:41:04,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:41:04,161 INFO L93 Difference]: Finished difference Result 520 states and 597 transitions. [2022-11-18 19:41:04,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-18 19:41:04,167 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 17 states have (on average 3.0) internal successors, (51), 17 states have internal predecessors, (51), 3 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) Word has length 122 [2022-11-18 19:41:04,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:41:04,170 INFO L225 Difference]: With dead ends: 520 [2022-11-18 19:41:04,170 INFO L226 Difference]: Without dead ends: 520 [2022-11-18 19:41:04,171 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=87, Invalid=672, Unknown=1, NotChecked=52, Total=812 [2022-11-18 19:41:04,172 INFO L413 NwaCegarLoop]: 82 mSDtfsCounter, 306 mSDsluCounter, 860 mSDsCounter, 0 mSdLazyCounter, 2238 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 314 SdHoareTripleChecker+Valid, 942 SdHoareTripleChecker+Invalid, 4563 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 2238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2289 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-11-18 19:41:04,172 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [314 Valid, 942 Invalid, 4563 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 2238 Invalid, 0 Unknown, 2289 Unchecked, 3.6s Time] [2022-11-18 19:41:04,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 520 states. [2022-11-18 19:41:04,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 520 to 287. [2022-11-18 19:41:04,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 191 states have (on average 1.5287958115183247) internal successors, (292), 268 states have internal predecessors, (292), 13 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2022-11-18 19:41:04,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 318 transitions. [2022-11-18 19:41:04,191 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 318 transitions. Word has length 122 [2022-11-18 19:41:04,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:41:04,192 INFO L495 AbstractCegarLoop]: Abstraction has 287 states and 318 transitions. [2022-11-18 19:41:04,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 17 states have (on average 3.0) internal successors, (51), 17 states have internal predecessors, (51), 3 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2022-11-18 19:41:04,192 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 318 transitions. [2022-11-18 19:41:04,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-11-18 19:41:04,194 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:41:04,194 INFO L195 NwaCegarLoop]: trace histogram [45, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:41:04,211 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2794ba63-fd96-4ede-a891-c232c833c625/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-18 19:41:04,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2794ba63-fd96-4ede-a891-c232c833c625/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-18 19:41:04,404 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 82 more)] === [2022-11-18 19:41:04,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:41:04,406 INFO L85 PathProgramCache]: Analyzing trace with hash -33837628, now seen corresponding path program 1 times [2022-11-18 19:41:04,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:41:04,406 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729782344] [2022-11-18 19:41:04,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:41:04,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:41:04,473 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:41:04,474 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2101423715] [2022-11-18 19:41:04,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:41:04,474 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:41:04,474 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2794ba63-fd96-4ede-a891-c232c833c625/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:41:04,475 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2794ba63-fd96-4ede-a891-c232c833c625/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:41:04,506 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2794ba63-fd96-4ede-a891-c232c833c625/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-18 19:41:05,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:41:05,110 INFO L263 TraceCheckSpWp]: Trace formula consists of 1271 conjuncts, 48 conjunts are in the unsatisfiable core [2022-11-18 19:41:05,115 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:41:05,293 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_5576 Int) (|zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| Int)) (and (= |c_#valid| (store |c_old(#valid)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| v_ArrVal_5576)) (= (select |c_old(#valid)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base|) 0))) is different from true [2022-11-18 19:41:05,432 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-18 19:41:05,433 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 17 treesize of output 21 [2022-11-18 19:41:05,455 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_5577 Int)) (= |c_#valid| (store |c_old(#valid)| |c_zalloc_or_die_calloc_model_~ptr~0#1.base| v_ArrVal_5577))) is different from true [2022-11-18 19:41:05,500 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_5577 Int)) (= |c_#valid| (store |c_old(#valid)| |c_zalloc_or_die_calloc_model_#res#1.base| v_ArrVal_5577))) is different from true [2022-11-18 19:41:05,507 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_5577 Int)) (= |c_#valid| (store |c_old(#valid)| |c_zalloc_or_die_~ptr~1#1.base| v_ArrVal_5577))) is different from true [2022-11-18 19:41:05,513 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_5577 Int)) (= |c_#valid| (store |c_old(#valid)| |c_zalloc_or_die_#res#1.base| v_ArrVal_5577))) is different from true [2022-11-18 19:41:05,541 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-18 19:41:05,541 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 18 [2022-11-18 19:41:05,619 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_5578 Int)) (= |c_#valid| (store |c_old(#valid)| |c_zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| v_ArrVal_5578))) is different from true [2022-11-18 19:41:05,810 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-18 19:41:05,811 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 22 [2022-11-18 19:41:05,940 INFO L134 CoverageAnalysis]: Checked inductivity of 1395 backedges. 659 proven. 60 refuted. 0 times theorem prover too weak. 289 trivial. 387 not checked. [2022-11-18 19:41:05,940 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:41:07,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:41:07,329 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729782344] [2022-11-18 19:41:07,329 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:41:07,329 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2101423715] [2022-11-18 19:41:07,329 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2101423715] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:41:07,329 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-18 19:41:07,329 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2022-11-18 19:41:07,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103206994] [2022-11-18 19:41:07,329 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-18 19:41:07,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-18 19:41:07,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:41:07,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-18 19:41:07,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=484, Unknown=6, NotChecked=294, Total=870 [2022-11-18 19:41:07,331 INFO L87 Difference]: Start difference. First operand 287 states and 318 transitions. Second operand has 21 states, 19 states have (on average 3.526315789473684) internal successors, (67), 17 states have internal predecessors, (67), 3 states have call successors, (6), 2 states have call predecessors, (6), 5 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) [2022-11-18 19:41:08,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:41:08,822 INFO L93 Difference]: Finished difference Result 451 states and 517 transitions. [2022-11-18 19:41:08,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-18 19:41:08,823 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 19 states have (on average 3.526315789473684) internal successors, (67), 17 states have internal predecessors, (67), 3 states have call successors, (6), 2 states have call predecessors, (6), 5 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) Word has length 127 [2022-11-18 19:41:08,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:41:08,825 INFO L225 Difference]: With dead ends: 451 [2022-11-18 19:41:08,825 INFO L226 Difference]: Without dead ends: 451 [2022-11-18 19:41:08,826 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 143 SyntacticMatches, 4 SemanticMatches, 34 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=152, Invalid=736, Unknown=6, NotChecked=366, Total=1260 [2022-11-18 19:41:08,826 INFO L413 NwaCegarLoop]: 186 mSDtfsCounter, 322 mSDsluCounter, 1766 mSDsCounter, 0 mSdLazyCounter, 891 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 322 SdHoareTripleChecker+Valid, 1952 SdHoareTripleChecker+Invalid, 2808 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 891 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1892 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-18 19:41:08,827 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [322 Valid, 1952 Invalid, 2808 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 891 Invalid, 0 Unknown, 1892 Unchecked, 1.1s Time] [2022-11-18 19:41:08,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 451 states. [2022-11-18 19:41:08,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 451 to 313. [2022-11-18 19:41:08,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 313 states, 213 states have (on average 1.4929577464788732) internal successors, (318), 289 states have internal predecessors, (318), 18 states have call successors, (18), 5 states have call predecessors, (18), 5 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2022-11-18 19:41:08,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 354 transitions. [2022-11-18 19:41:08,836 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 354 transitions. Word has length 127 [2022-11-18 19:41:08,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:41:08,837 INFO L495 AbstractCegarLoop]: Abstraction has 313 states and 354 transitions. [2022-11-18 19:41:08,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 19 states have (on average 3.526315789473684) internal successors, (67), 17 states have internal predecessors, (67), 3 states have call successors, (6), 2 states have call predecessors, (6), 5 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) [2022-11-18 19:41:08,837 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 354 transitions. [2022-11-18 19:41:08,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-11-18 19:41:08,839 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:41:08,839 INFO L195 NwaCegarLoop]: trace histogram [45, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:41:08,847 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2794ba63-fd96-4ede-a891-c232c833c625/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-18 19:41:09,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2794ba63-fd96-4ede-a891-c232c833c625/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-18 19:41:09,048 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 82 more)] === [2022-11-18 19:41:09,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:41:09,048 INFO L85 PathProgramCache]: Analyzing trace with hash -33837627, now seen corresponding path program 1 times [2022-11-18 19:41:09,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:41:09,048 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681898513] [2022-11-18 19:41:09,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:41:09,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:41:09,095 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:41:09,095 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [16121719] [2022-11-18 19:41:09,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:41:09,096 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:41:09,096 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2794ba63-fd96-4ede-a891-c232c833c625/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:41:09,097 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2794ba63-fd96-4ede-a891-c232c833c625/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:41:09,115 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2794ba63-fd96-4ede-a891-c232c833c625/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-18 19:41:12,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:41:12,802 INFO L263 TraceCheckSpWp]: Trace formula consists of 1271 conjuncts, 129 conjunts are in the unsatisfiable core [2022-11-18 19:41:12,807 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:41:12,926 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 [2022-11-18 19:41:12,952 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 [2022-11-18 19:41:22,782 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-18 19:41:22,782 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 22 treesize of output 28 [2022-11-18 19:41:23,363 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-18 19:41:23,363 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 17 treesize of output 21 [2022-11-18 19:41:27,575 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-18 19:41:27,575 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 22 treesize of output 28 [2022-11-18 19:41:28,186 INFO L321 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-11-18 19:41:28,186 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 22 treesize of output 33 [2022-11-18 19:41:31,082 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_6193 Int) (|zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| Int)) (and (= |c_#length| (store |c_old(#length)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| v_ArrVal_6193)) (= (select |c_old(#valid)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base|) 0))) is different from true [2022-11-18 19:41:31,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:41:31,291 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 24 [2022-11-18 19:41:31,411 INFO L321 Elim1Store]: treesize reduction 12, result has 52.0 percent of original size [2022-11-18 19:41:31,412 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 21 treesize of output 25 [2022-11-18 19:41:33,512 INFO L134 CoverageAnalysis]: Checked inductivity of 1395 backedges. 435 proven. 492 refuted. 0 times theorem prover too weak. 243 trivial. 225 not checked. [2022-11-18 19:41:33,512 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:41:34,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:41:34,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681898513] [2022-11-18 19:41:34,574 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:41:34,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [16121719] [2022-11-18 19:41:34,574 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [16121719] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:41:34,574 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-18 19:41:34,574 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38] total 38 [2022-11-18 19:41:34,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121341787] [2022-11-18 19:41:34,575 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-18 19:41:34,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-11-18 19:41:34,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:41:34,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-11-18 19:41:34,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=1440, Unknown=1, NotChecked=76, Total=1640 [2022-11-18 19:41:34,577 INFO L87 Difference]: Start difference. First operand 313 states and 354 transitions. Second operand has 39 states, 35 states have (on average 2.085714285714286) internal successors, (73), 35 states have internal predecessors, (73), 4 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2022-11-18 19:41:42,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:41:42,755 INFO L93 Difference]: Finished difference Result 435 states and 504 transitions. [2022-11-18 19:41:42,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-18 19:41:42,756 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 35 states have (on average 2.085714285714286) internal successors, (73), 35 states have internal predecessors, (73), 4 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) Word has length 127 [2022-11-18 19:41:42,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:41:42,759 INFO L225 Difference]: With dead ends: 435 [2022-11-18 19:41:42,759 INFO L226 Difference]: Without dead ends: 435 [2022-11-18 19:41:42,760 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 97 SyntacticMatches, 5 SemanticMatches, 53 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 610 ImplicationChecksByTransitivity, 23.1s TimeCoverageRelationStatistics Valid=202, Invalid=2663, Unknown=1, NotChecked=104, Total=2970 [2022-11-18 19:41:42,761 INFO L413 NwaCegarLoop]: 121 mSDtfsCounter, 112 mSDsluCounter, 1396 mSDsCounter, 0 mSdLazyCounter, 906 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 1517 SdHoareTripleChecker+Invalid, 3865 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 906 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2948 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-18 19:41:42,761 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 1517 Invalid, 3865 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 906 Invalid, 0 Unknown, 2948 Unchecked, 1.2s Time] [2022-11-18 19:41:42,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 435 states. [2022-11-18 19:41:42,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 435 to 317. [2022-11-18 19:41:42,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 317 states, 217 states have (on average 1.4884792626728112) internal successors, (323), 293 states have internal predecessors, (323), 18 states have call successors, (18), 5 states have call predecessors, (18), 5 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2022-11-18 19:41:42,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 359 transitions. [2022-11-18 19:41:42,774 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 359 transitions. Word has length 127 [2022-11-18 19:41:42,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:41:42,775 INFO L495 AbstractCegarLoop]: Abstraction has 317 states and 359 transitions. [2022-11-18 19:41:42,775 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 35 states have (on average 2.085714285714286) internal successors, (73), 35 states have internal predecessors, (73), 4 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2022-11-18 19:41:42,775 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 359 transitions. [2022-11-18 19:41:42,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-11-18 19:41:42,777 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:41:42,777 INFO L195 NwaCegarLoop]: trace histogram [45, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:41:42,814 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2794ba63-fd96-4ede-a891-c232c833c625/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-11-18 19:41:42,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2794ba63-fd96-4ede-a891-c232c833c625/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-18 19:41:42,991 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 82 more)] === [2022-11-18 19:41:42,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:41:42,991 INFO L85 PathProgramCache]: Analyzing trace with hash -1048966435, now seen corresponding path program 1 times [2022-11-18 19:41:42,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:41:42,991 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627684322] [2022-11-18 19:41:42,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:41:42,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:41:43,044 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:41:43,044 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [490181447] [2022-11-18 19:41:43,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:41:43,045 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:41:43,045 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2794ba63-fd96-4ede-a891-c232c833c625/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:41:43,046 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2794ba63-fd96-4ede-a891-c232c833c625/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:41:43,064 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2794ba63-fd96-4ede-a891-c232c833c625/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-11-18 19:41:43,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:41:43,691 INFO L263 TraceCheckSpWp]: Trace formula consists of 1279 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-18 19:41:43,693 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:41:43,782 INFO L134 CoverageAnalysis]: Checked inductivity of 1395 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1395 trivial. 0 not checked. [2022-11-18 19:41:43,783 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:41:43,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:41:43,783 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627684322] [2022-11-18 19:41:43,783 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:41:43,783 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [490181447] [2022-11-18 19:41:43,783 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [490181447] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:41:43,783 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:41:43,783 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:41:43,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446490273] [2022-11-18 19:41:43,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:41:43,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:41:43,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:41:43,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:41:43,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:41:43,785 INFO L87 Difference]: Start difference. First operand 317 states and 359 transitions. Second operand has 4 states, 3 states have (on average 10.666666666666666) internal successors, (32), 4 states have internal predecessors, (32), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-18 19:41:44,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:41:44,028 INFO L93 Difference]: Finished difference Result 330 states and 377 transitions. [2022-11-18 19:41:44,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 19:41:44,029 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 10.666666666666666) internal successors, (32), 4 states have internal predecessors, (32), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 128 [2022-11-18 19:41:44,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:41:44,031 INFO L225 Difference]: With dead ends: 330 [2022-11-18 19:41:44,031 INFO L226 Difference]: Without dead ends: 330 [2022-11-18 19:41:44,032 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:41:44,032 INFO L413 NwaCegarLoop]: 237 mSDtfsCounter, 160 mSDsluCounter, 280 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 517 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 19:41:44,033 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [166 Valid, 517 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 19:41:44,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2022-11-18 19:41:44,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 316. [2022-11-18 19:41:44,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 316 states, 217 states have (on average 1.4838709677419355) internal successors, (322), 292 states have internal predecessors, (322), 18 states have call successors, (18), 5 states have call predecessors, (18), 5 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2022-11-18 19:41:44,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 358 transitions. [2022-11-18 19:41:44,044 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 358 transitions. Word has length 128 [2022-11-18 19:41:44,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:41:44,044 INFO L495 AbstractCegarLoop]: Abstraction has 316 states and 358 transitions. [2022-11-18 19:41:44,045 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 10.666666666666666) internal successors, (32), 4 states have internal predecessors, (32), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-18 19:41:44,045 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 358 transitions. [2022-11-18 19:41:44,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-11-18 19:41:44,046 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:41:44,047 INFO L195 NwaCegarLoop]: trace histogram [45, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:41:44,057 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2794ba63-fd96-4ede-a891-c232c833c625/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-11-18 19:41:44,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2794ba63-fd96-4ede-a891-c232c833c625/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-18 19:41:44,256 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 82 more)] === [2022-11-18 19:41:44,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:41:44,257 INFO L85 PathProgramCache]: Analyzing trace with hash -1048966434, now seen corresponding path program 1 times [2022-11-18 19:41:44,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:41:44,257 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923357220] [2022-11-18 19:41:44,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:41:44,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:41:44,306 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:41:44,307 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1783558610] [2022-11-18 19:41:44,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:41:44,307 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:41:44,307 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2794ba63-fd96-4ede-a891-c232c833c625/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:41:44,308 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2794ba63-fd96-4ede-a891-c232c833c625/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:41:44,315 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2794ba63-fd96-4ede-a891-c232c833c625/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-11-18 19:41:47,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:41:47,537 INFO L263 TraceCheckSpWp]: Trace formula consists of 1279 conjuncts, 99 conjunts are in the unsatisfiable core [2022-11-18 19:41:47,540 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:41:47,655 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 [2022-11-18 19:41:47,673 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 [2022-11-18 19:41:56,016 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-18 19:41:56,016 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 17 treesize of output 21 [2022-11-18 19:41:56,093 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 22 treesize of output 24 [2022-11-18 19:41:58,352 WARN L859 $PredicateComparison]: unable to prove that (exists ((|zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| Int) (v_ArrVal_7400 Int)) (and (= (store |c_old(#length)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| v_ArrVal_7400) |c_#length|) (= (select |c_old(#valid)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base|) 0))) is different from true [2022-11-18 19:41:58,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:41:58,524 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 24 [2022-11-18 19:41:58,555 INFO L321 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2022-11-18 19:41:58,556 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2022-11-18 19:42:01,931 INFO L134 CoverageAnalysis]: Checked inductivity of 1395 backedges. 558 proven. 404 refuted. 0 times theorem prover too weak. 269 trivial. 164 not checked. [2022-11-18 19:42:01,931 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:42:06,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:42:06,599 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923357220] [2022-11-18 19:42:06,599 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:42:06,599 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1783558610] [2022-11-18 19:42:06,599 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1783558610] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:42:06,599 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-18 19:42:06,600 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2022-11-18 19:42:06,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713365252] [2022-11-18 19:42:06,600 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-18 19:42:06,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-11-18 19:42:06,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:42:06,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-11-18 19:42:06,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=1164, Unknown=1, NotChecked=68, Total=1332 [2022-11-18 19:42:06,602 INFO L87 Difference]: Start difference. First operand 316 states and 358 transitions. Second operand has 35 states, 33 states have (on average 2.242424242424242) internal successors, (74), 32 states have internal predecessors, (74), 3 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2022-11-18 19:42:14,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:42:14,168 INFO L93 Difference]: Finished difference Result 440 states and 512 transitions. [2022-11-18 19:42:14,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-11-18 19:42:14,169 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 33 states have (on average 2.242424242424242) internal successors, (74), 32 states have internal predecessors, (74), 3 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) Word has length 128 [2022-11-18 19:42:14,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:42:14,171 INFO L225 Difference]: With dead ends: 440 [2022-11-18 19:42:14,171 INFO L226 Difference]: Without dead ends: 440 [2022-11-18 19:42:14,172 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 104 SyntacticMatches, 4 SemanticMatches, 49 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 493 ImplicationChecksByTransitivity, 19.8s TimeCoverageRelationStatistics Valid=178, Invalid=2275, Unknown=1, NotChecked=96, Total=2550 [2022-11-18 19:42:14,172 INFO L413 NwaCegarLoop]: 121 mSDtfsCounter, 112 mSDsluCounter, 2608 mSDsCounter, 0 mSdLazyCounter, 1147 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 2729 SdHoareTripleChecker+Invalid, 5907 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 1147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 4749 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-18 19:42:14,173 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 2729 Invalid, 5907 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 1147 Invalid, 0 Unknown, 4749 Unchecked, 1.5s Time] [2022-11-18 19:42:14,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 440 states. [2022-11-18 19:42:14,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 440 to 321. [2022-11-18 19:42:14,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 321 states, 222 states have (on average 1.4864864864864864) internal successors, (330), 297 states have internal predecessors, (330), 18 states have call successors, (18), 5 states have call predecessors, (18), 5 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2022-11-18 19:42:14,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 366 transitions. [2022-11-18 19:42:14,184 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 366 transitions. Word has length 128 [2022-11-18 19:42:14,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:42:14,184 INFO L495 AbstractCegarLoop]: Abstraction has 321 states and 366 transitions. [2022-11-18 19:42:14,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 33 states have (on average 2.242424242424242) internal successors, (74), 32 states have internal predecessors, (74), 3 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2022-11-18 19:42:14,185 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 366 transitions. [2022-11-18 19:42:14,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-11-18 19:42:14,186 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:42:14,186 INFO L195 NwaCegarLoop]: trace histogram [45, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:42:14,214 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2794ba63-fd96-4ede-a891-c232c833c625/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-11-18 19:42:14,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2794ba63-fd96-4ede-a891-c232c833c625/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-18 19:42:14,402 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 82 more)] === [2022-11-18 19:42:14,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:42:14,403 INFO L85 PathProgramCache]: Analyzing trace with hash 1260571679, now seen corresponding path program 1 times [2022-11-18 19:42:14,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:42:14,403 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289330498] [2022-11-18 19:42:14,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:42:14,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:42:14,472 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:42:14,473 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1554034087] [2022-11-18 19:42:14,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:42:14,473 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:42:14,473 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2794ba63-fd96-4ede-a891-c232c833c625/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:42:14,474 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2794ba63-fd96-4ede-a891-c232c833c625/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:42:14,502 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2794ba63-fd96-4ede-a891-c232c833c625/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-11-18 19:42:15,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:42:15,203 INFO L263 TraceCheckSpWp]: Trace formula consists of 1296 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 19:42:15,205 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:42:15,236 INFO L134 CoverageAnalysis]: Checked inductivity of 1395 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1395 trivial. 0 not checked. [2022-11-18 19:42:15,236 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:42:15,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:42:15,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289330498] [2022-11-18 19:42:15,236 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:42:15,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1554034087] [2022-11-18 19:42:15,236 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1554034087] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:42:15,236 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:42:15,237 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 19:42:15,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119137302] [2022-11-18 19:42:15,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:42:15,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:42:15,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:42:15,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:42:15,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:42:15,238 INFO L87 Difference]: Start difference. First operand 321 states and 366 transitions. Second operand has 3 states, 2 states have (on average 17.0) internal successors, (34), 3 states have internal predecessors, (34), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-11-18 19:42:15,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:42:15,418 INFO L93 Difference]: Finished difference Result 326 states and 374 transitions. [2022-11-18 19:42:15,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:42:15,419 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 17.0) internal successors, (34), 3 states have internal predecessors, (34), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 130 [2022-11-18 19:42:15,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:42:15,423 INFO L225 Difference]: With dead ends: 326 [2022-11-18 19:42:15,423 INFO L226 Difference]: Without dead ends: 326 [2022-11-18 19:42:15,423 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:42:15,424 INFO L413 NwaCegarLoop]: 227 mSDtfsCounter, 76 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 359 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 [2022-11-18 19:42:15,424 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 359 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 19:42:15,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2022-11-18 19:42:15,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 320. [2022-11-18 19:42:15,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 320 states, 222 states have (on average 1.481981981981982) internal successors, (329), 296 states have internal predecessors, (329), 18 states have call successors, (18), 5 states have call predecessors, (18), 5 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2022-11-18 19:42:15,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 365 transitions. [2022-11-18 19:42:15,435 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 365 transitions. Word has length 130 [2022-11-18 19:42:15,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:42:15,435 INFO L495 AbstractCegarLoop]: Abstraction has 320 states and 365 transitions. [2022-11-18 19:42:15,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 17.0) internal successors, (34), 3 states have internal predecessors, (34), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-11-18 19:42:15,436 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 365 transitions. [2022-11-18 19:42:15,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-11-18 19:42:15,438 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:42:15,438 INFO L195 NwaCegarLoop]: trace histogram [45, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:42:15,454 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2794ba63-fd96-4ede-a891-c232c833c625/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-11-18 19:42:15,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2794ba63-fd96-4ede-a891-c232c833c625/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:42:15,651 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 82 more)] === [2022-11-18 19:42:15,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:42:15,651 INFO L85 PathProgramCache]: Analyzing trace with hash 647419782, now seen corresponding path program 1 times [2022-11-18 19:42:15,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:42:15,651 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344565053] [2022-11-18 19:42:15,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:42:15,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:42:15,713 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:42:15,714 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2001684312] [2022-11-18 19:42:15,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:42:15,714 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:42:15,714 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2794ba63-fd96-4ede-a891-c232c833c625/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:42:15,715 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2794ba63-fd96-4ede-a891-c232c833c625/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:42:15,717 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2794ba63-fd96-4ede-a891-c232c833c625/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-11-18 19:42:16,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:42:16,477 INFO L263 TraceCheckSpWp]: Trace formula consists of 1317 conjuncts, 87 conjunts are in the unsatisfiable core [2022-11-18 19:42:16,481 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:42:17,138 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-18 19:42:17,139 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 17 treesize of output 21 [2022-11-18 19:42:17,733 INFO L321 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-11-18 19:42:17,733 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 22 treesize of output 33 [2022-11-18 19:42:18,003 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_8642 Int)) (= |c_#valid| (store |c_old(#valid)| |c_zalloc_or_die_calloc_model_~ptr~0#1.base| v_ArrVal_8642))) is different from true [2022-11-18 19:42:18,058 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_8642 Int)) (= |c_#valid| (store |c_old(#valid)| |c_zalloc_or_die_calloc_model_#res#1.base| v_ArrVal_8642))) is different from true [2022-11-18 19:42:18,067 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_8642 Int)) (= |c_#valid| (store |c_old(#valid)| |c_zalloc_or_die_~ptr~1#1.base| v_ArrVal_8642))) is different from true [2022-11-18 19:42:18,076 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_8642 Int)) (= |c_#valid| (store |c_old(#valid)| |c_zalloc_or_die_#res#1.base| v_ArrVal_8642))) is different from true [2022-11-18 19:42:18,143 INFO L321 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2022-11-18 19:42:18,144 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 30 [2022-11-18 19:42:18,377 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_8643 Int)) (= |c_#valid| (store |c_old(#valid)| |c_zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| v_ArrVal_8643))) is different from true [2022-11-18 19:42:18,652 INFO L321 Elim1Store]: treesize reduction 20, result has 57.4 percent of original size [2022-11-18 19:42:18,652 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 31 treesize of output 52 [2022-11-18 19:42:19,311 INFO L134 CoverageAnalysis]: Checked inductivity of 1395 backedges. 509 proven. 356 refuted. 0 times theorem prover too weak. 202 trivial. 328 not checked. [2022-11-18 19:42:19,311 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:42:19,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:42:19,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344565053] [2022-11-18 19:42:19,605 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:42:19,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2001684312] [2022-11-18 19:42:19,605 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2001684312] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:42:19,605 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-18 19:42:19,605 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2022-11-18 19:42:19,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435098367] [2022-11-18 19:42:19,606 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-18 19:42:19,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-11-18 19:42:19,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:42:19,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-11-18 19:42:19,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=770, Unknown=5, NotChecked=300, Total=1190 [2022-11-18 19:42:19,607 INFO L87 Difference]: Start difference. First operand 320 states and 365 transitions. Second operand has 33 states, 31 states have (on average 2.6774193548387095) internal successors, (83), 28 states have internal predecessors, (83), 4 states have call successors, (6), 2 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2022-11-18 19:42:20,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:42:20,443 INFO L93 Difference]: Finished difference Result 498 states and 582 transitions. [2022-11-18 19:42:20,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-18 19:42:20,444 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 31 states have (on average 2.6774193548387095) internal successors, (83), 28 states have internal predecessors, (83), 4 states have call successors, (6), 2 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) Word has length 134 [2022-11-18 19:42:20,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:42:20,447 INFO L225 Difference]: With dead ends: 498 [2022-11-18 19:42:20,447 INFO L226 Difference]: Without dead ends: 498 [2022-11-18 19:42:20,448 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 116 SyntacticMatches, 7 SemanticMatches, 34 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 256 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=121, Invalid=824, Unknown=5, NotChecked=310, Total=1260 [2022-11-18 19:42:20,448 INFO L413 NwaCegarLoop]: 182 mSDtfsCounter, 210 mSDsluCounter, 2636 mSDsCounter, 0 mSdLazyCounter, 495 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 210 SdHoareTripleChecker+Valid, 2818 SdHoareTripleChecker+Invalid, 3222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 495 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2707 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-18 19:42:20,449 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [210 Valid, 2818 Invalid, 3222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 495 Invalid, 0 Unknown, 2707 Unchecked, 0.7s Time] [2022-11-18 19:42:20,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 498 states. [2022-11-18 19:42:20,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 498 to 364. [2022-11-18 19:42:20,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 364 states, 259 states have (on average 1.4362934362934363) internal successors, (372), 333 states have internal predecessors, (372), 25 states have call successors, (25), 5 states have call predecessors, (25), 5 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2022-11-18 19:42:20,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 422 transitions. [2022-11-18 19:42:20,461 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 422 transitions. Word has length 134 [2022-11-18 19:42:20,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:42:20,461 INFO L495 AbstractCegarLoop]: Abstraction has 364 states and 422 transitions. [2022-11-18 19:42:20,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 31 states have (on average 2.6774193548387095) internal successors, (83), 28 states have internal predecessors, (83), 4 states have call successors, (6), 2 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2022-11-18 19:42:20,462 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 422 transitions. [2022-11-18 19:42:20,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-11-18 19:42:20,464 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:42:20,464 INFO L195 NwaCegarLoop]: trace histogram [45, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:42:20,474 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2794ba63-fd96-4ede-a891-c232c833c625/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2022-11-18 19:42:20,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2794ba63-fd96-4ede-a891-c232c833c625/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:42:20,674 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 82 more)] === [2022-11-18 19:42:20,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:42:20,674 INFO L85 PathProgramCache]: Analyzing trace with hash 647419783, now seen corresponding path program 1 times [2022-11-18 19:42:20,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:42:20,675 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270998543] [2022-11-18 19:42:20,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:42:20,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:42:20,729 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:42:20,729 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [998438697] [2022-11-18 19:42:20,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:42:20,730 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:42:20,730 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2794ba63-fd96-4ede-a891-c232c833c625/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:42:20,731 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2794ba63-fd96-4ede-a891-c232c833c625/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:42:20,764 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2794ba63-fd96-4ede-a891-c232c833c625/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-11-18 19:42:22,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:42:22,931 INFO L263 TraceCheckSpWp]: Trace formula consists of 1317 conjuncts, 159 conjunts are in the unsatisfiable core [2022-11-18 19:42:22,937 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:42:23,036 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 [2022-11-18 19:42:23,054 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 [2022-11-18 19:42:33,646 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-18 19:42:33,647 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 22 treesize of output 28 [2022-11-18 19:42:36,086 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-18 19:42:36,086 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 17 treesize of output 21 [2022-11-18 19:42:40,323 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-18 19:42:40,323 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 22 treesize of output 28 [2022-11-18 19:42:40,879 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-18 19:42:40,880 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 17 treesize of output 21 [2022-11-18 19:42:45,247 INFO L321 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-11-18 19:42:45,247 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 22 treesize of output 33 [2022-11-18 19:42:45,341 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 22 treesize of output 24 [2022-11-18 19:42:48,276 WARN L859 $PredicateComparison]: unable to prove that (exists ((|zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| Int) (v_ArrVal_9278 Int)) (and (= (store |c_old(#length)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| v_ArrVal_9278) |c_#length|) (= (select |c_old(#valid)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base|) 0))) is different from true [2022-11-18 19:42:51,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:42:51,205 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 24 [2022-11-18 19:42:51,380 INFO L321 Elim1Store]: treesize reduction 12, result has 52.0 percent of original size [2022-11-18 19:42:51,380 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 21 treesize of output 25 [2022-11-18 19:42:56,170 INFO L134 CoverageAnalysis]: Checked inductivity of 1395 backedges. 397 proven. 758 refuted. 0 times theorem prover too weak. 212 trivial. 28 not checked. [2022-11-18 19:42:56,170 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:42:57,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:42:57,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270998543] [2022-11-18 19:42:57,237 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:42:57,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [998438697] [2022-11-18 19:42:57,237 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [998438697] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:42:57,237 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-18 19:42:57,237 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46] total 46 [2022-11-18 19:42:57,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119213179] [2022-11-18 19:42:57,238 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-18 19:42:57,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-11-18 19:42:57,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:42:57,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-11-18 19:42:57,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=2097, Unknown=10, NotChecked=92, Total=2352 [2022-11-18 19:42:57,239 INFO L87 Difference]: Start difference. First operand 364 states and 422 transitions. Second operand has 47 states, 43 states have (on average 2.0697674418604652) internal successors, (89), 42 states have internal predecessors, (89), 4 states have call successors, (6), 2 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2022-11-18 19:43:03,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:43:03,624 INFO L93 Difference]: Finished difference Result 496 states and 581 transitions. [2022-11-18 19:43:03,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-18 19:43:03,625 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 43 states have (on average 2.0697674418604652) internal successors, (89), 42 states have internal predecessors, (89), 4 states have call successors, (6), 2 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) Word has length 134 [2022-11-18 19:43:03,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:43:03,628 INFO L225 Difference]: With dead ends: 496 [2022-11-18 19:43:03,628 INFO L226 Difference]: Without dead ends: 496 [2022-11-18 19:43:03,629 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 103 SyntacticMatches, 5 SemanticMatches, 59 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 889 ImplicationChecksByTransitivity, 26.6s TimeCoverageRelationStatistics Valid=236, Invalid=3298, Unknown=10, NotChecked=116, Total=3660 [2022-11-18 19:43:03,630 INFO L413 NwaCegarLoop]: 114 mSDtfsCounter, 112 mSDsluCounter, 2810 mSDsCounter, 0 mSdLazyCounter, 291 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 2924 SdHoareTripleChecker+Invalid, 6661 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 291 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 6359 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-18 19:43:03,630 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 2924 Invalid, 6661 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 291 Invalid, 0 Unknown, 6359 Unchecked, 0.6s Time] [2022-11-18 19:43:03,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 496 states. [2022-11-18 19:43:03,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 496 to 387. [2022-11-18 19:43:03,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 281 states have (on average 1.4128113879003559) internal successors, (397), 355 states have internal predecessors, (397), 25 states have call successors, (25), 5 states have call predecessors, (25), 6 states have return successors, (29), 26 states have call predecessors, (29), 25 states have call successors, (29) [2022-11-18 19:43:03,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 451 transitions. [2022-11-18 19:43:03,643 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 451 transitions. Word has length 134 [2022-11-18 19:43:03,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:43:03,644 INFO L495 AbstractCegarLoop]: Abstraction has 387 states and 451 transitions. [2022-11-18 19:43:03,644 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 43 states have (on average 2.0697674418604652) internal successors, (89), 42 states have internal predecessors, (89), 4 states have call successors, (6), 2 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2022-11-18 19:43:03,644 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 451 transitions. [2022-11-18 19:43:03,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-11-18 19:43:03,646 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:43:03,646 INFO L195 NwaCegarLoop]: trace histogram [46, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:43:03,688 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2794ba63-fd96-4ede-a891-c232c833c625/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-11-18 19:43:03,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2794ba63-fd96-4ede-a891-c232c833c625/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:43:03,870 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 82 more)] === [2022-11-18 19:43:03,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:43:03,871 INFO L85 PathProgramCache]: Analyzing trace with hash 1745943042, now seen corresponding path program 2 times [2022-11-18 19:43:03,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:43:03,871 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622980111] [2022-11-18 19:43:03,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:43:03,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:43:03,933 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:43:03,933 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2128484038] [2022-11-18 19:43:03,933 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 19:43:03,934 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:43:03,934 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2794ba63-fd96-4ede-a891-c232c833c625/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:43:03,935 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2794ba63-fd96-4ede-a891-c232c833c625/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:43:03,958 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2794ba63-fd96-4ede-a891-c232c833c625/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-11-18 19:43:04,859 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 19:43:04,859 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:43:04,869 INFO L263 TraceCheckSpWp]: Trace formula consists of 1332 conjuncts, 157 conjunts are in the unsatisfiable core [2022-11-18 19:43:04,876 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:43:04,995 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 [2022-11-18 19:43:05,019 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 [2022-11-18 19:43:14,571 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:43:14,572 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 22 treesize of output 24 [2022-11-18 19:43:14,651 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-18 19:43:14,651 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 17 treesize of output 21 [2022-11-18 19:43:18,046 INFO L321 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-11-18 19:43:18,047 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 22 treesize of output 33 [2022-11-18 19:43:18,113 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 22 treesize of output 24 [2022-11-18 19:43:24,027 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-18 19:43:24,028 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 22 treesize of output 28 [2022-11-18 19:43:24,536 INFO L321 Elim1Store]: treesize reduction 54, result has 34.1 percent of original size [2022-11-18 19:43:24,536 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 27 treesize of output 45 [2022-11-18 19:43:26,712 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_9925 Int) (|zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| Int)) (and (= (store |c_old(#length)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| v_ArrVal_9925) |c_#length|) (= (select |c_old(#valid)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base|) 0))) is different from true [2022-11-18 19:43:30,053 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:43:30,054 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 24 [2022-11-18 19:43:30,088 INFO L321 Elim1Store]: treesize reduction 12, result has 52.0 percent of original size [2022-11-18 19:43:30,089 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 21 treesize of output 25 [2022-11-18 19:43:33,156 INFO L134 CoverageAnalysis]: Checked inductivity of 1446 backedges. 256 proven. 1058 refuted. 0 times theorem prover too weak. 104 trivial. 28 not checked. [2022-11-18 19:43:33,157 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:43:34,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:43:34,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622980111] [2022-11-18 19:43:34,316 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:43:34,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2128484038] [2022-11-18 19:43:34,316 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2128484038] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:43:34,316 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-18 19:43:34,317 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51] total 51 [2022-11-18 19:43:34,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809657037] [2022-11-18 19:43:34,317 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-18 19:43:34,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-11-18 19:43:34,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:43:34,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-11-18 19:43:34,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=2584, Unknown=5, NotChecked=102, Total=2862 [2022-11-18 19:43:34,320 INFO L87 Difference]: Start difference. First operand 387 states and 451 transitions. Second operand has 52 states, 49 states have (on average 2.1020408163265305) internal successors, (103), 48 states have internal predecessors, (103), 4 states have call successors, (6), 2 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2022-11-18 19:43:43,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:43:43,543 INFO L93 Difference]: Finished difference Result 538 states and 631 transitions. [2022-11-18 19:43:43,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-11-18 19:43:43,544 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 49 states have (on average 2.1020408163265305) internal successors, (103), 48 states have internal predecessors, (103), 4 states have call successors, (6), 2 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) Word has length 135 [2022-11-18 19:43:43,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:43:43,546 INFO L225 Difference]: With dead ends: 538 [2022-11-18 19:43:43,546 INFO L226 Difference]: Without dead ends: 538 [2022-11-18 19:43:43,547 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 99 SyntacticMatches, 5 SemanticMatches, 65 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1106 ImplicationChecksByTransitivity, 30.6s TimeCoverageRelationStatistics Valid=278, Invalid=4011, Unknown=5, NotChecked=128, Total=4422 [2022-11-18 19:43:43,548 INFO L413 NwaCegarLoop]: 117 mSDtfsCounter, 115 mSDsluCounter, 2877 mSDsCounter, 0 mSdLazyCounter, 535 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 2994 SdHoareTripleChecker+Invalid, 6528 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 535 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 5982 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-18 19:43:43,548 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 2994 Invalid, 6528 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 535 Invalid, 0 Unknown, 5982 Unchecked, 0.8s Time] [2022-11-18 19:43:43,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 538 states. [2022-11-18 19:43:43,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 538 to 407. [2022-11-18 19:43:43,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 407 states, 299 states have (on average 1.394648829431438) internal successors, (417), 374 states have internal predecessors, (417), 26 states have call successors, (26), 6 states have call predecessors, (26), 7 states have return successors, (30), 26 states have call predecessors, (30), 26 states have call successors, (30) [2022-11-18 19:43:43,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 473 transitions. [2022-11-18 19:43:43,562 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 473 transitions. Word has length 135 [2022-11-18 19:43:43,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:43:43,563 INFO L495 AbstractCegarLoop]: Abstraction has 407 states and 473 transitions. [2022-11-18 19:43:43,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 49 states have (on average 2.1020408163265305) internal successors, (103), 48 states have internal predecessors, (103), 4 states have call successors, (6), 2 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2022-11-18 19:43:43,563 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 473 transitions. [2022-11-18 19:43:43,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-11-18 19:43:43,565 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:43:43,565 INFO L195 NwaCegarLoop]: trace histogram [45, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:43:43,577 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2794ba63-fd96-4ede-a891-c232c833c625/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2022-11-18 19:43:43,777 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2794ba63-fd96-4ede-a891-c232c833c625/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2022-11-18 19:43:43,778 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 82 more)] === [2022-11-18 19:43:43,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:43:43,778 INFO L85 PathProgramCache]: Analyzing trace with hash -1404823183, now seen corresponding path program 1 times [2022-11-18 19:43:43,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:43:43,778 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317595124] [2022-11-18 19:43:43,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:43:43,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:43:43,826 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:43:43,827 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1992133179] [2022-11-18 19:43:43,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:43:43,827 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:43:43,827 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2794ba63-fd96-4ede-a891-c232c833c625/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:43:43,828 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2794ba63-fd96-4ede-a891-c232c833c625/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:43:43,834 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2794ba63-fd96-4ede-a891-c232c833c625/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-11-18 19:43:44,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:43:44,703 INFO L263 TraceCheckSpWp]: Trace formula consists of 1325 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-18 19:43:44,705 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:43:44,789 INFO L134 CoverageAnalysis]: Checked inductivity of 1395 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1395 trivial. 0 not checked. [2022-11-18 19:43:44,790 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:43:44,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:43:44,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317595124] [2022-11-18 19:43:44,790 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:43:44,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1992133179] [2022-11-18 19:43:44,790 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1992133179] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:43:44,790 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:43:44,791 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:43:44,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985505268] [2022-11-18 19:43:44,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:43:44,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:43:44,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:43:44,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:43:44,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:43:44,793 INFO L87 Difference]: Start difference. First operand 407 states and 473 transitions. Second operand has 4 states, 3 states have (on average 13.0) internal successors, (39), 4 states have internal predecessors, (39), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-18 19:43:45,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:43:45,048 INFO L93 Difference]: Finished difference Result 415 states and 484 transitions. [2022-11-18 19:43:45,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 19:43:45,049 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 13.0) internal successors, (39), 4 states have internal predecessors, (39), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 135 [2022-11-18 19:43:45,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:43:45,051 INFO L225 Difference]: With dead ends: 415 [2022-11-18 19:43:45,051 INFO L226 Difference]: Without dead ends: 415 [2022-11-18 19:43:45,052 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:43:45,052 INFO L413 NwaCegarLoop]: 236 mSDtfsCounter, 134 mSDsluCounter, 280 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 516 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 19:43:45,052 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 516 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 19:43:45,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 415 states. [2022-11-18 19:43:45,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 415 to 406. [2022-11-18 19:43:45,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 406 states, 299 states have (on average 1.391304347826087) internal successors, (416), 373 states have internal predecessors, (416), 26 states have call successors, (26), 6 states have call predecessors, (26), 7 states have return successors, (30), 26 states have call predecessors, (30), 26 states have call successors, (30) [2022-11-18 19:43:45,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 406 states to 406 states and 472 transitions. [2022-11-18 19:43:45,064 INFO L78 Accepts]: Start accepts. Automaton has 406 states and 472 transitions. Word has length 135 [2022-11-18 19:43:45,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:43:45,064 INFO L495 AbstractCegarLoop]: Abstraction has 406 states and 472 transitions. [2022-11-18 19:43:45,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 13.0) internal successors, (39), 4 states have internal predecessors, (39), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-18 19:43:45,065 INFO L276 IsEmpty]: Start isEmpty. Operand 406 states and 472 transitions. [2022-11-18 19:43:45,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-11-18 19:43:45,066 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:43:45,066 INFO L195 NwaCegarLoop]: trace histogram [45, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:43:45,077 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2794ba63-fd96-4ede-a891-c232c833c625/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-11-18 19:43:45,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2794ba63-fd96-4ede-a891-c232c833c625/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2022-11-18 19:43:45,277 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 82 more)] === [2022-11-18 19:43:45,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:43:45,277 INFO L85 PathProgramCache]: Analyzing trace with hash -1404823182, now seen corresponding path program 1 times [2022-11-18 19:43:45,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:43:45,277 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99545824] [2022-11-18 19:43:45,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:43:45,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:43:45,330 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:43:45,331 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [379668685] [2022-11-18 19:43:45,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:43:45,331 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:43:45,331 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2794ba63-fd96-4ede-a891-c232c833c625/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:43:45,332 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2794ba63-fd96-4ede-a891-c232c833c625/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:43:45,337 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2794ba63-fd96-4ede-a891-c232c833c625/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-11-18 19:43:46,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:43:46,220 INFO L263 TraceCheckSpWp]: Trace formula consists of 1325 conjuncts, 30 conjunts are in the unsatisfiable core [2022-11-18 19:43:46,222 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:43:46,616 INFO L134 CoverageAnalysis]: Checked inductivity of 1395 backedges. 176 proven. 237 refuted. 0 times theorem prover too weak. 982 trivial. 0 not checked. [2022-11-18 19:43:46,616 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:43:46,726 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 19:43:46,726 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 20 treesize of output 24 [2022-11-18 19:43:47,258 INFO L134 CoverageAnalysis]: Checked inductivity of 1395 backedges. 176 proven. 237 refuted. 0 times theorem prover too weak. 982 trivial. 0 not checked. [2022-11-18 19:43:47,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:43:47,260 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99545824] [2022-11-18 19:43:47,260 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:43:47,260 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [379668685] [2022-11-18 19:43:47,260 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [379668685] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:43:47,260 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 19:43:47,260 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2022-11-18 19:43:47,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037767617] [2022-11-18 19:43:47,260 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 19:43:47,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-18 19:43:47,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:43:47,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-18 19:43:47,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2022-11-18 19:43:47,261 INFO L87 Difference]: Start difference. First operand 406 states and 472 transitions. Second operand has 18 states, 17 states have (on average 4.705882352941177) internal successors, (80), 16 states have internal predecessors, (80), 3 states have call successors, (9), 1 states have call predecessors, (9), 3 states have return successors, (10), 5 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-18 19:43:48,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:43:48,006 INFO L93 Difference]: Finished difference Result 414 states and 483 transitions. [2022-11-18 19:43:48,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 19:43:48,007 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 4.705882352941177) internal successors, (80), 16 states have internal predecessors, (80), 3 states have call successors, (9), 1 states have call predecessors, (9), 3 states have return successors, (10), 5 states have call predecessors, (10), 3 states have call successors, (10) Word has length 135 [2022-11-18 19:43:48,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:43:48,008 INFO L225 Difference]: With dead ends: 414 [2022-11-18 19:43:48,008 INFO L226 Difference]: Without dead ends: 414 [2022-11-18 19:43:48,009 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 273 GetRequests, 253 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=82, Invalid=380, Unknown=0, NotChecked=0, Total=462 [2022-11-18 19:43:48,009 INFO L413 NwaCegarLoop]: 220 mSDtfsCounter, 278 mSDsluCounter, 1894 mSDsCounter, 0 mSdLazyCounter, 419 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 279 SdHoareTripleChecker+Valid, 2114 SdHoareTripleChecker+Invalid, 447 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 419 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-18 19:43:48,010 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [279 Valid, 2114 Invalid, 447 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 419 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-18 19:43:48,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 414 states. [2022-11-18 19:43:48,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 414 to 405. [2022-11-18 19:43:48,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 405 states, 299 states have (on average 1.3879598662207357) internal successors, (415), 372 states have internal predecessors, (415), 26 states have call successors, (26), 6 states have call predecessors, (26), 7 states have return successors, (30), 26 states have call predecessors, (30), 26 states have call successors, (30) [2022-11-18 19:43:48,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 405 states to 405 states and 471 transitions. [2022-11-18 19:43:48,021 INFO L78 Accepts]: Start accepts. Automaton has 405 states and 471 transitions. Word has length 135 [2022-11-18 19:43:48,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:43:48,022 INFO L495 AbstractCegarLoop]: Abstraction has 405 states and 471 transitions. [2022-11-18 19:43:48,022 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 4.705882352941177) internal successors, (80), 16 states have internal predecessors, (80), 3 states have call successors, (9), 1 states have call predecessors, (9), 3 states have return successors, (10), 5 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-18 19:43:48,022 INFO L276 IsEmpty]: Start isEmpty. Operand 405 states and 471 transitions. [2022-11-18 19:43:48,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2022-11-18 19:43:48,023 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:43:48,024 INFO L195 NwaCegarLoop]: trace histogram [47, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:43:48,039 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2794ba63-fd96-4ede-a891-c232c833c625/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-11-18 19:43:48,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2794ba63-fd96-4ede-a891-c232c833c625/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:43:48,235 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 82 more)] === [2022-11-18 19:43:48,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:43:48,235 INFO L85 PathProgramCache]: Analyzing trace with hash 1440425703, now seen corresponding path program 3 times [2022-11-18 19:43:48,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:43:48,235 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513314553] [2022-11-18 19:43:48,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:43:48,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:43:48,292 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:43:48,292 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [565511378] [2022-11-18 19:43:48,293 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 19:43:48,293 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:43:48,293 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2794ba63-fd96-4ede-a891-c232c833c625/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:43:48,294 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2794ba63-fd96-4ede-a891-c232c833c625/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:43:48,318 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2794ba63-fd96-4ede-a891-c232c833c625/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-11-18 19:44:22,960 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-11-18 19:44:22,960 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:44:22,977 INFO L263 TraceCheckSpWp]: Trace formula consists of 757 conjuncts, 37 conjunts are in the unsatisfiable core [2022-11-18 19:44:22,979 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:44:22,998 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 [2022-11-18 19:44:23,035 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 13 treesize of output 9 [2022-11-18 19:44:23,536 INFO L134 CoverageAnalysis]: Checked inductivity of 1498 backedges. 395 proven. 28 refuted. 0 times theorem prover too weak. 1075 trivial. 0 not checked. [2022-11-18 19:44:23,536 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:44:24,603 INFO L134 CoverageAnalysis]: Checked inductivity of 1498 backedges. 395 proven. 28 refuted. 0 times theorem prover too weak. 1075 trivial. 0 not checked. [2022-11-18 19:44:24,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:44:24,603 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513314553] [2022-11-18 19:44:24,603 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:44:24,603 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [565511378] [2022-11-18 19:44:24,603 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [565511378] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:44:24,603 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 19:44:24,604 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 22 [2022-11-18 19:44:24,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42951391] [2022-11-18 19:44:24,604 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 19:44:24,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-18 19:44:24,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:44:24,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-18 19:44:24,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=329, Unknown=0, NotChecked=0, Total=462 [2022-11-18 19:44:24,606 INFO L87 Difference]: Start difference. First operand 405 states and 471 transitions. Second operand has 22 states, 22 states have (on average 3.090909090909091) internal successors, (68), 22 states have internal predecessors, (68), 1 states have call successors, (6), 1 states have call predecessors, (6), 3 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2022-11-18 19:44:31,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:44:31,719 INFO L93 Difference]: Finished difference Result 424 states and 496 transitions. [2022-11-18 19:44:31,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-18 19:44:31,731 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.090909090909091) internal successors, (68), 22 states have internal predecessors, (68), 1 states have call successors, (6), 1 states have call predecessors, (6), 3 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) Word has length 136 [2022-11-18 19:44:31,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:44:31,733 INFO L225 Difference]: With dead ends: 424 [2022-11-18 19:44:31,733 INFO L226 Difference]: Without dead ends: 384 [2022-11-18 19:44:31,733 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 298 GetRequests, 250 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 451 ImplicationChecksByTransitivity, 7.1s TimeCoverageRelationStatistics Valid=688, Invalid=1762, Unknown=0, NotChecked=0, Total=2450 [2022-11-18 19:44:31,735 INFO L413 NwaCegarLoop]: 245 mSDtfsCounter, 212 mSDsluCounter, 2323 mSDsCounter, 0 mSdLazyCounter, 406 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 212 SdHoareTripleChecker+Valid, 2568 SdHoareTripleChecker+Invalid, 466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 406 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-18 19:44:31,735 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [212 Valid, 2568 Invalid, 466 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 406 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-18 19:44:31,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 384 states. [2022-11-18 19:44:31,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 384 to 384. [2022-11-18 19:44:31,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 281 states have (on average 1.395017793594306) internal successors, (392), 353 states have internal predecessors, (392), 25 states have call successors, (25), 5 states have call predecessors, (25), 5 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2022-11-18 19:44:31,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 442 transitions. [2022-11-18 19:44:31,744 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 442 transitions. Word has length 136 [2022-11-18 19:44:31,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:44:31,745 INFO L495 AbstractCegarLoop]: Abstraction has 384 states and 442 transitions. [2022-11-18 19:44:31,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.090909090909091) internal successors, (68), 22 states have internal predecessors, (68), 1 states have call successors, (6), 1 states have call predecessors, (6), 3 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2022-11-18 19:44:31,745 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 442 transitions. [2022-11-18 19:44:31,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-11-18 19:44:31,746 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:44:31,746 INFO L195 NwaCegarLoop]: trace histogram [56, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:44:31,773 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2794ba63-fd96-4ede-a891-c232c833c625/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2022-11-18 19:44:31,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2794ba63-fd96-4ede-a891-c232c833c625/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:44:31,969 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 82 more)] === [2022-11-18 19:44:31,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:44:31,969 INFO L85 PathProgramCache]: Analyzing trace with hash 499284258, now seen corresponding path program 4 times [2022-11-18 19:44:31,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:44:31,970 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192371300] [2022-11-18 19:44:31,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:44:31,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:44:32,029 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:44:32,029 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1653761216] [2022-11-18 19:44:32,029 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-18 19:44:32,030 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:44:32,030 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2794ba63-fd96-4ede-a891-c232c833c625/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:44:32,031 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2794ba63-fd96-4ede-a891-c232c833c625/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:44:32,039 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2794ba63-fd96-4ede-a891-c232c833c625/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-11-18 19:44:34,650 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-18 19:44:34,650 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:44:34,660 INFO L263 TraceCheckSpWp]: Trace formula consists of 1482 conjuncts, 171 conjunts are in the unsatisfiable core [2022-11-18 19:44:34,665 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:44:34,938 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 [2022-11-18 19:44:34,947 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 [2022-11-18 19:44:34,972 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 [2022-11-18 19:44:44,090 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-18 19:44:44,091 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 22 treesize of output 28 [2022-11-18 19:44:44,653 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-18 19:44:44,654 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 17 treesize of output 21 [2022-11-18 19:44:48,747 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-18 19:44:48,747 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 11 treesize of output 11 [2022-11-18 19:44:48,816 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 22 treesize of output 24 [2022-11-18 19:44:56,498 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-18 19:44:56,498 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 22 treesize of output 28 [2022-11-18 19:45:04,727 WARN L859 $PredicateComparison]: unable to prove that (or (exists ((|zalloc_or_die_calloc_model_~ptr~0#1.base| Int) (v_ArrVal_12590 Int) (|zalloc_or_die_calloc_model_~size#1| Int)) (and (= (mod |c_zalloc_or_die_#Ultimate.C_memset_#amount#1| |zalloc_or_die_calloc_model_~size#1|) 0) (not (= |zalloc_or_die_calloc_model_~size#1| 0)) (= (store |c_old(#length)| |zalloc_or_die_calloc_model_~ptr~0#1.base| v_ArrVal_12590) |c_#length|) (<= (mod (* (div |c_zalloc_or_die_#Ultimate.C_memset_#amount#1| |zalloc_or_die_calloc_model_~size#1|) |zalloc_or_die_calloc_model_~size#1|) 4294967296) v_ArrVal_12590))) (and (exists ((|zalloc_or_die_calloc_model_~ptr~0#1.base| Int) (v_ArrVal_12590 Int)) (and (<= 0 v_ArrVal_12590) (= (store |c_old(#length)| |zalloc_or_die_calloc_model_~ptr~0#1.base| v_ArrVal_12590) |c_#length|))) (= |c_zalloc_or_die_#Ultimate.C_memset_#amount#1| 0))) is different from true [2022-11-18 19:45:12,531 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_12590 Int) (|zalloc_or_die_calloc_model_~ptr~0#1.base| Int) (|zalloc_or_die_calloc_model_~size#1| Int) (|aux_mod_zalloc_or_die_#Ultimate.C_memset_#amount#1_61| Int) (|aux_div_zalloc_or_die_#Ultimate.C_memset_#amount#1_61| Int)) (let ((.cse0 (+ (* |aux_div_zalloc_or_die_#Ultimate.C_memset_#amount#1_61| 4294967296) |aux_mod_zalloc_or_die_#Ultimate.C_memset_#amount#1_61|))) (and (<= (mod (* (div .cse0 |zalloc_or_die_calloc_model_~size#1|) |zalloc_or_die_calloc_model_~size#1|) 4294967296) v_ArrVal_12590) (not (= |zalloc_or_die_calloc_model_~size#1| 0)) (< 8 |aux_mod_zalloc_or_die_#Ultimate.C_memset_#amount#1_61|) (= (store |c_old(#length)| |zalloc_or_die_calloc_model_~ptr~0#1.base| v_ArrVal_12590) |c_#length|) (= (mod .cse0 |zalloc_or_die_calloc_model_~size#1|) 0) (< |aux_mod_zalloc_or_die_#Ultimate.C_memset_#amount#1_61| 4294967296)))) is different from true [2022-11-18 19:45:14,043 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-18 19:45:14,043 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 46 treesize of output 52 [2022-11-18 19:45:34,473 WARN L233 SmtUtils]: Spent 5.00s on a formula simplification. DAG size of input: 54 DAG size of output: 47 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 19:45:42,281 INFO L134 CoverageAnalysis]: Checked inductivity of 2011 backedges. 55 proven. 1266 refuted. 88 times theorem prover too weak. 142 trivial. 460 not checked. [2022-11-18 19:45:42,281 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:46:08,919 WARN L233 SmtUtils]: Spent 6.23s on a formula simplification that was a NOOP. DAG size: 38 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 19:46:08,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:46:08,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192371300] [2022-11-18 19:46:08,921 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:46:08,921 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1653761216] [2022-11-18 19:46:08,921 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1653761216] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:46:08,921 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-18 19:46:08,921 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [58] total 58 [2022-11-18 19:46:08,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161514397] [2022-11-18 19:46:08,921 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-18 19:46:08,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2022-11-18 19:46:08,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:46:08,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2022-11-18 19:46:08,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=177, Invalid=3330, Unknown=41, NotChecked=234, Total=3782 [2022-11-18 19:46:08,923 INFO L87 Difference]: Start difference. First operand 384 states and 442 transitions. Second operand has 59 states, 55 states have (on average 1.9090909090909092) internal successors, (105), 52 states have internal predecessors, (105), 4 states have call successors, (6), 3 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2022-11-18 19:47:35,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:47:35,467 INFO L93 Difference]: Finished difference Result 574 states and 669 transitions. [2022-11-18 19:47:35,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2022-11-18 19:47:35,468 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 55 states have (on average 1.9090909090909092) internal successors, (105), 52 states have internal predecessors, (105), 4 states have call successors, (6), 3 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) Word has length 145 [2022-11-18 19:47:35,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:47:35,471 INFO L225 Difference]: With dead ends: 574 [2022-11-18 19:47:35,471 INFO L226 Difference]: Without dead ends: 574 [2022-11-18 19:47:35,474 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 1784 ImplicationChecksByTransitivity, 158.7s TimeCoverageRelationStatistics Valid=480, Invalid=9172, Unknown=58, NotChecked=390, Total=10100 [2022-11-18 19:47:35,475 INFO L413 NwaCegarLoop]: 123 mSDtfsCounter, 235 mSDsluCounter, 2513 mSDsCounter, 0 mSdLazyCounter, 938 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 235 SdHoareTripleChecker+Valid, 2636 SdHoareTripleChecker+Invalid, 10142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 938 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 9193 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-18 19:47:35,476 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [235 Valid, 2636 Invalid, 10142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 938 Invalid, 0 Unknown, 9193 Unchecked, 1.5s Time] [2022-11-18 19:47:35,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 574 states. [2022-11-18 19:47:35,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 574 to 454. [2022-11-18 19:47:35,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 454 states, 346 states have (on average 1.3323699421965318) internal successors, (461), 420 states have internal predecessors, (461), 27 states have call successors, (27), 8 states have call predecessors, (27), 8 states have return successors, (27), 25 states have call predecessors, (27), 27 states have call successors, (27) [2022-11-18 19:47:35,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 454 states to 454 states and 515 transitions. [2022-11-18 19:47:35,491 INFO L78 Accepts]: Start accepts. Automaton has 454 states and 515 transitions. Word has length 145 [2022-11-18 19:47:35,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:47:35,491 INFO L495 AbstractCegarLoop]: Abstraction has 454 states and 515 transitions. [2022-11-18 19:47:35,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 55 states have (on average 1.9090909090909092) internal successors, (105), 52 states have internal predecessors, (105), 4 states have call successors, (6), 3 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2022-11-18 19:47:35,492 INFO L276 IsEmpty]: Start isEmpty. Operand 454 states and 515 transitions. [2022-11-18 19:47:35,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-11-18 19:47:35,493 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:47:35,493 INFO L195 NwaCegarLoop]: trace histogram [56, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:47:35,542 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2794ba63-fd96-4ede-a891-c232c833c625/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2022-11-18 19:47:35,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2794ba63-fd96-4ede-a891-c232c833c625/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-11-18 19:47:35,707 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 82 more)] === [2022-11-18 19:47:35,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:47:35,707 INFO L85 PathProgramCache]: Analyzing trace with hash 705608951, now seen corresponding path program 1 times [2022-11-18 19:47:35,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:47:35,707 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993400976] [2022-11-18 19:47:35,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:47:35,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:47:35,804 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:47:35,805 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [77252940] [2022-11-18 19:47:35,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:47:35,805 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:47:35,805 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2794ba63-fd96-4ede-a891-c232c833c625/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:47:35,807 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2794ba63-fd96-4ede-a891-c232c833c625/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:47:35,818 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2794ba63-fd96-4ede-a891-c232c833c625/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-11-18 19:47:37,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:47:37,086 INFO L263 TraceCheckSpWp]: Trace formula consists of 1507 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 19:47:37,088 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:47:37,107 INFO L134 CoverageAnalysis]: Checked inductivity of 2011 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2011 trivial. 0 not checked. [2022-11-18 19:47:37,107 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:47:37,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:47:37,107 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993400976] [2022-11-18 19:47:37,108 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:47:37,108 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [77252940] [2022-11-18 19:47:37,108 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [77252940] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:47:37,108 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:47:37,108 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 19:47:37,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150887600] [2022-11-18 19:47:37,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:47:37,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:47:37,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:47:37,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:47:37,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:47:37,109 INFO L87 Difference]: Start difference. First operand 454 states and 515 transitions. Second operand has 3 states, 2 states have (on average 20.5) internal successors, (41), 3 states have internal predecessors, (41), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-11-18 19:47:37,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:47:37,298 INFO L93 Difference]: Finished difference Result 457 states and 520 transitions. [2022-11-18 19:47:37,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:47:37,299 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 20.5) internal successors, (41), 3 states have internal predecessors, (41), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 148 [2022-11-18 19:47:37,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:47:37,301 INFO L225 Difference]: With dead ends: 457 [2022-11-18 19:47:37,302 INFO L226 Difference]: Without dead ends: 457 [2022-11-18 19:47:37,302 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:47:37,303 INFO L413 NwaCegarLoop]: 237 mSDtfsCounter, 39 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 382 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 19:47:37,303 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 382 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 19:47:37,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 457 states. [2022-11-18 19:47:37,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 457 to 453. [2022-11-18 19:47:37,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 453 states, 346 states have (on average 1.329479768786127) internal successors, (460), 419 states have internal predecessors, (460), 27 states have call successors, (27), 8 states have call predecessors, (27), 8 states have return successors, (27), 25 states have call predecessors, (27), 27 states have call successors, (27) [2022-11-18 19:47:37,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 453 states to 453 states and 514 transitions. [2022-11-18 19:47:37,334 INFO L78 Accepts]: Start accepts. Automaton has 453 states and 514 transitions. Word has length 148 [2022-11-18 19:47:37,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:47:37,335 INFO L495 AbstractCegarLoop]: Abstraction has 453 states and 514 transitions. [2022-11-18 19:47:37,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 20.5) internal successors, (41), 3 states have internal predecessors, (41), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-11-18 19:47:37,336 INFO L276 IsEmpty]: Start isEmpty. Operand 453 states and 514 transitions. [2022-11-18 19:47:37,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-11-18 19:47:37,337 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:47:37,337 INFO L195 NwaCegarLoop]: trace histogram [56, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:47:37,350 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2794ba63-fd96-4ede-a891-c232c833c625/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2022-11-18 19:47:37,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2794ba63-fd96-4ede-a891-c232c833c625/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-11-18 19:47:37,550 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 82 more)] === [2022-11-18 19:47:37,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:47:37,550 INFO L85 PathProgramCache]: Analyzing trace with hash 705608952, now seen corresponding path program 1 times [2022-11-18 19:47:37,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:47:37,550 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568864304] [2022-11-18 19:47:37,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:47:37,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:47:37,651 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:47:37,652 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1535443879] [2022-11-18 19:47:37,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:47:37,652 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:47:37,653 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2794ba63-fd96-4ede-a891-c232c833c625/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:47:37,654 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2794ba63-fd96-4ede-a891-c232c833c625/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:47:37,682 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2794ba63-fd96-4ede-a891-c232c833c625/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-11-18 19:47:38,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:47:38,969 INFO L263 TraceCheckSpWp]: Trace formula consists of 1507 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 19:47:38,982 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:47:39,019 INFO L134 CoverageAnalysis]: Checked inductivity of 2011 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2011 trivial. 0 not checked. [2022-11-18 19:47:39,020 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:47:39,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:47:39,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568864304] [2022-11-18 19:47:39,020 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:47:39,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1535443879] [2022-11-18 19:47:39,020 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1535443879] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:47:39,020 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:47:39,021 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 19:47:39,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923258687] [2022-11-18 19:47:39,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:47:39,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:47:39,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:47:39,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:47:39,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:47:39,022 INFO L87 Difference]: Start difference. First operand 453 states and 514 transitions. Second operand has 3 states, 2 states have (on average 20.5) internal successors, (41), 3 states have internal predecessors, (41), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-11-18 19:47:39,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:47:39,221 INFO L93 Difference]: Finished difference Result 456 states and 519 transitions. [2022-11-18 19:47:39,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:47:39,222 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 20.5) internal successors, (41), 3 states have internal predecessors, (41), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 148 [2022-11-18 19:47:39,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:47:39,224 INFO L225 Difference]: With dead ends: 456 [2022-11-18 19:47:39,224 INFO L226 Difference]: Without dead ends: 456 [2022-11-18 19:47:39,225 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:47:39,225 INFO L413 NwaCegarLoop]: 227 mSDtfsCounter, 60 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 365 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 19:47:39,226 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 365 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 19:47:39,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 456 states. [2022-11-18 19:47:39,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 456 to 452. [2022-11-18 19:47:39,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 452 states, 346 states have (on average 1.3265895953757225) internal successors, (459), 418 states have internal predecessors, (459), 27 states have call successors, (27), 8 states have call predecessors, (27), 8 states have return successors, (27), 25 states have call predecessors, (27), 27 states have call successors, (27) [2022-11-18 19:47:39,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 452 states to 452 states and 513 transitions. [2022-11-18 19:47:39,255 INFO L78 Accepts]: Start accepts. Automaton has 452 states and 513 transitions. Word has length 148 [2022-11-18 19:47:39,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:47:39,255 INFO L495 AbstractCegarLoop]: Abstraction has 452 states and 513 transitions. [2022-11-18 19:47:39,256 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 20.5) internal successors, (41), 3 states have internal predecessors, (41), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-11-18 19:47:39,256 INFO L276 IsEmpty]: Start isEmpty. Operand 452 states and 513 transitions. [2022-11-18 19:47:39,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-11-18 19:47:39,257 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:47:39,257 INFO L195 NwaCegarLoop]: trace histogram [56, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:47:39,274 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2794ba63-fd96-4ede-a891-c232c833c625/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2022-11-18 19:47:39,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2794ba63-fd96-4ede-a891-c232c833c625/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-11-18 19:47:39,469 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 82 more)] === [2022-11-18 19:47:39,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:47:39,470 INFO L85 PathProgramCache]: Analyzing trace with hash -637073057, now seen corresponding path program 1 times [2022-11-18 19:47:39,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:47:39,470 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766288641] [2022-11-18 19:47:39,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:47:39,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:47:39,567 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:47:39,567 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [887619378] [2022-11-18 19:47:39,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:47:39,567 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:47:39,568 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2794ba63-fd96-4ede-a891-c232c833c625/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:47:39,569 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2794ba63-fd96-4ede-a891-c232c833c625/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:47:39,579 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2794ba63-fd96-4ede-a891-c232c833c625/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-11-18 19:47:40,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:47:40,896 INFO L263 TraceCheckSpWp]: Trace formula consists of 1528 conjuncts, 92 conjunts are in the unsatisfiable core [2022-11-18 19:47:40,901 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:47:41,556 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-18 19:47:41,556 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 17 treesize of output 21 [2022-11-18 19:47:42,118 INFO L321 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-11-18 19:47:42,119 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 22 treesize of output 33 [2022-11-18 19:47:42,732 INFO L321 Elim1Store]: treesize reduction 54, result has 34.1 percent of original size [2022-11-18 19:47:42,732 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 27 treesize of output 45 [2022-11-18 19:47:42,932 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_14913 Int)) (= |c_#valid| (store |c_old(#valid)| |c_zalloc_or_die_calloc_model_~ptr~0#1.base| v_ArrVal_14913))) is different from true [2022-11-18 19:47:42,977 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_14913 Int)) (= |c_#valid| (store |c_old(#valid)| |c_zalloc_or_die_calloc_model_#res#1.base| v_ArrVal_14913))) is different from true [2022-11-18 19:47:42,984 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_14913 Int)) (= |c_#valid| (store |c_old(#valid)| |c_zalloc_or_die_~ptr~1#1.base| v_ArrVal_14913))) is different from true [2022-11-18 19:47:42,991 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_14913 Int)) (= |c_#valid| (store |c_old(#valid)| |c_zalloc_or_die_#res#1.base| v_ArrVal_14913))) is different from true [2022-11-18 19:47:43,085 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-18 19:47:43,085 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 22 treesize of output 42 [2022-11-18 19:47:43,519 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_14914 Int)) (= |c_#valid| (store |c_old(#valid)| |c_zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| v_ArrVal_14914))) is different from true [2022-11-18 19:47:44,034 INFO L321 Elim1Store]: treesize reduction 40, result has 68.0 percent of original size [2022-11-18 19:47:44,035 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 58 treesize of output 133 [2022-11-18 19:47:55,112 INFO L134 CoverageAnalysis]: Checked inductivity of 2011 backedges. 93 proven. 1076 refuted. 0 times theorem prover too weak. 326 trivial. 516 not checked. [2022-11-18 19:47:55,112 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:47:55,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:47:55,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766288641] [2022-11-18 19:47:55,411 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:47:55,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [887619378] [2022-11-18 19:47:55,412 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [887619378] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:47:55,412 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-18 19:47:55,412 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2022-11-18 19:47:55,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777311699] [2022-11-18 19:47:55,412 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-18 19:47:55,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-11-18 19:47:55,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:47:55,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-11-18 19:47:55,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=887, Unknown=5, NotChecked=320, Total=1332 [2022-11-18 19:47:55,414 INFO L87 Difference]: Start difference. First operand 452 states and 513 transitions. Second operand has 35 states, 32 states have (on average 2.8125) internal successors, (90), 30 states have internal predecessors, (90), 5 states have call successors, (6), 2 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2022-11-18 19:47:56,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:47:56,782 INFO L93 Difference]: Finished difference Result 725 states and 857 transitions. [2022-11-18 19:47:56,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-18 19:47:56,783 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 32 states have (on average 2.8125) internal successors, (90), 30 states have internal predecessors, (90), 5 states have call successors, (6), 2 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) Word has length 152 [2022-11-18 19:47:56,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:47:56,786 INFO L225 Difference]: With dead ends: 725 [2022-11-18 19:47:56,786 INFO L226 Difference]: Without dead ends: 725 [2022-11-18 19:47:56,787 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 139 SyntacticMatches, 6 SemanticMatches, 37 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 307 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=136, Invalid=1001, Unknown=5, NotChecked=340, Total=1482 [2022-11-18 19:47:56,787 INFO L413 NwaCegarLoop]: 193 mSDtfsCounter, 257 mSDsluCounter, 2910 mSDsCounter, 0 mSdLazyCounter, 847 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 257 SdHoareTripleChecker+Valid, 3103 SdHoareTripleChecker+Invalid, 4283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 847 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 3411 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-18 19:47:56,788 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [257 Valid, 3103 Invalid, 4283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 847 Invalid, 0 Unknown, 3411 Unchecked, 1.1s Time] [2022-11-18 19:47:56,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 725 states. [2022-11-18 19:47:56,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 725 to 590. [2022-11-18 19:47:56,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 590 states, 463 states have (on average 1.304535637149028) internal successors, (604), 537 states have internal predecessors, (604), 48 states have call successors, (48), 8 states have call predecessors, (48), 8 states have return successors, (48), 44 states have call predecessors, (48), 48 states have call successors, (48) [2022-11-18 19:47:56,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 590 states to 590 states and 700 transitions. [2022-11-18 19:47:56,804 INFO L78 Accepts]: Start accepts. Automaton has 590 states and 700 transitions. Word has length 152 [2022-11-18 19:47:56,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:47:56,805 INFO L495 AbstractCegarLoop]: Abstraction has 590 states and 700 transitions. [2022-11-18 19:47:56,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 32 states have (on average 2.8125) internal successors, (90), 30 states have internal predecessors, (90), 5 states have call successors, (6), 2 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2022-11-18 19:47:56,805 INFO L276 IsEmpty]: Start isEmpty. Operand 590 states and 700 transitions. [2022-11-18 19:47:56,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-11-18 19:47:56,807 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:47:56,807 INFO L195 NwaCegarLoop]: trace histogram [56, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:47:56,824 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2794ba63-fd96-4ede-a891-c232c833c625/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2022-11-18 19:47:57,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2794ba63-fd96-4ede-a891-c232c833c625/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-11-18 19:47:57,020 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 82 more)] === [2022-11-18 19:47:57,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:47:57,020 INFO L85 PathProgramCache]: Analyzing trace with hash -637073056, now seen corresponding path program 1 times [2022-11-18 19:47:57,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:47:57,021 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466397684] [2022-11-18 19:47:57,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:47:57,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:47:57,101 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:47:57,101 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2034565437] [2022-11-18 19:47:57,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:47:57,101 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:47:57,102 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2794ba63-fd96-4ede-a891-c232c833c625/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:47:57,103 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2794ba63-fd96-4ede-a891-c232c833c625/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:47:57,126 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2794ba63-fd96-4ede-a891-c232c833c625/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2022-11-18 19:48:01,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:48:01,358 INFO L263 TraceCheckSpWp]: Trace formula consists of 1528 conjuncts, 161 conjunts are in the unsatisfiable core [2022-11-18 19:48:01,364 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:48:01,384 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 12 treesize of output 11 [2022-11-18 19:48:01,405 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 [2022-11-18 19:48:11,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:48:11,936 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 25 treesize of output 27 [2022-11-18 19:48:12,083 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-18 19:48:12,084 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 17 treesize of output 21 [2022-11-18 19:48:13,929 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_15701 Int) (|zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| Int)) (and (= (store |c_old(#length)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| v_ArrVal_15701) |c_#length|) (= (select |c_old(#valid)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base|) 0))) is different from true [2022-11-18 19:48:14,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:48:14,081 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 27 [2022-11-18 19:48:14,112 INFO L321 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2022-11-18 19:48:14,112 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2022-11-18 19:48:18,070 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-18 19:48:18,071 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 25 treesize of output 31 [2022-11-18 19:48:24,405 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-18 19:48:24,405 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 66 treesize of output 72 [2022-11-18 19:48:29,074 WARN L859 $PredicateComparison]: unable to prove that (or (and (exists ((v_ArrVal_15704 Int) (|zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| Int)) (and (= |c_#length| (store |c_old(#length)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| v_ArrVal_15704)) (<= 0 v_ArrVal_15704))) (= |c_zalloc_or_die_#Ultimate.C_memset_#amount#1| 0)) (exists ((v_ArrVal_15704 Int) (|zalloc_or_die_calloc_model_~size#1| Int) (|zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| Int)) (and (= (mod |c_zalloc_or_die_#Ultimate.C_memset_#amount#1| |zalloc_or_die_calloc_model_~size#1|) 0) (= |c_#length| (store |c_old(#length)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| v_ArrVal_15704)) (not (= |zalloc_or_die_calloc_model_~size#1| 0)) (<= (mod (* (div |c_zalloc_or_die_#Ultimate.C_memset_#amount#1| |zalloc_or_die_calloc_model_~size#1|) |zalloc_or_die_calloc_model_~size#1|) 4294967296) v_ArrVal_15704)))) is different from true [2022-11-18 19:48:35,141 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_15704 Int) (|zalloc_or_die_calloc_model_~size#1| Int) (|aux_mod_zalloc_or_die_#Ultimate.C_memset_#amount#1_61| Int) (|zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| Int) (|aux_div_zalloc_or_die_#Ultimate.C_memset_#amount#1_61| Int)) (let ((.cse0 (+ (* |aux_div_zalloc_or_die_#Ultimate.C_memset_#amount#1_61| 4294967296) |aux_mod_zalloc_or_die_#Ultimate.C_memset_#amount#1_61|))) (and (<= (mod (* (div .cse0 |zalloc_or_die_calloc_model_~size#1|) |zalloc_or_die_calloc_model_~size#1|) 4294967296) v_ArrVal_15704) (= |c_#length| (store |c_old(#length)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| v_ArrVal_15704)) (not (= |zalloc_or_die_calloc_model_~size#1| 0)) (< 8 |aux_mod_zalloc_or_die_#Ultimate.C_memset_#amount#1_61|) (= (mod .cse0 |zalloc_or_die_calloc_model_~size#1|) 0) (< |aux_mod_zalloc_or_die_#Ultimate.C_memset_#amount#1_61| 4294967296)))) is different from true [2022-11-18 19:48:37,040 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-18 19:48:37,040 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 69 treesize of output 75 [2022-11-18 19:48:58,349 WARN L233 SmtUtils]: Spent 11.81s on a formula simplification that was a NOOP. DAG size: 71 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 19:49:21,751 WARN L233 SmtUtils]: Spent 17.37s on a formula simplification. DAG size of input: 69 DAG size of output: 62 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 19:49:45,652 WARN L233 SmtUtils]: Spent 9.71s on a formula simplification. DAG size of input: 64 DAG size of output: 57 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 19:49:54,638 INFO L134 CoverageAnalysis]: Checked inductivity of 2011 backedges. 5 proven. 842 refuted. 0 times theorem prover too weak. 264 trivial. 900 not checked. [2022-11-18 19:49:54,638 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:50:07,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:50:07,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466397684] [2022-11-18 19:50:07,855 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:50:07,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2034565437] [2022-11-18 19:50:07,855 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2034565437] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:50:07,856 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-18 19:50:07,856 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48] total 48 [2022-11-18 19:50:07,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512009612] [2022-11-18 19:50:07,856 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-18 19:50:07,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-11-18 19:50:07,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:50:07,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-11-18 19:50:07,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=2284, Unknown=33, NotChecked=294, Total=2756 [2022-11-18 19:50:07,859 INFO L87 Difference]: Start difference. First operand 590 states and 700 transitions. Second operand has 49 states, 46 states have (on average 2.108695652173913) internal successors, (97), 43 states have internal predecessors, (97), 6 states have call successors, (6), 3 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-18 19:50:38,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:50:38,456 INFO L93 Difference]: Finished difference Result 781 states and 957 transitions. [2022-11-18 19:50:38,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-11-18 19:50:38,457 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 46 states have (on average 2.108695652173913) internal successors, (97), 43 states have internal predecessors, (97), 6 states have call successors, (6), 3 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 152 [2022-11-18 19:50:38,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:50:38,460 INFO L225 Difference]: With dead ends: 781 [2022-11-18 19:50:38,460 INFO L226 Difference]: Without dead ends: 781 [2022-11-18 19:50:38,461 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 124 SyntacticMatches, 1 SemanticMatches, 70 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 684 ImplicationChecksByTransitivity, 121.5s TimeCoverageRelationStatistics Valid=263, Invalid=4408, Unknown=33, NotChecked=408, Total=5112 [2022-11-18 19:50:38,462 INFO L413 NwaCegarLoop]: 155 mSDtfsCounter, 350 mSDsluCounter, 3063 mSDsCounter, 0 mSdLazyCounter, 278 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 350 SdHoareTripleChecker+Valid, 3218 SdHoareTripleChecker+Invalid, 12821 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 278 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 12523 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-18 19:50:38,462 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [350 Valid, 3218 Invalid, 12821 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 278 Invalid, 0 Unknown, 12523 Unchecked, 0.7s Time] [2022-11-18 19:50:38,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 781 states. [2022-11-18 19:50:38,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 781 to 651. [2022-11-18 19:50:38,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 651 states, 517 states have (on average 1.2823984526112187) internal successors, (663), 591 states have internal predecessors, (663), 53 states have call successors, (53), 9 states have call predecessors, (53), 10 states have return successors, (73), 50 states have call predecessors, (73), 53 states have call successors, (73) [2022-11-18 19:50:38,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 651 states to 651 states and 789 transitions. [2022-11-18 19:50:38,479 INFO L78 Accepts]: Start accepts. Automaton has 651 states and 789 transitions. Word has length 152 [2022-11-18 19:50:38,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:50:38,479 INFO L495 AbstractCegarLoop]: Abstraction has 651 states and 789 transitions. [2022-11-18 19:50:38,479 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 46 states have (on average 2.108695652173913) internal successors, (97), 43 states have internal predecessors, (97), 6 states have call successors, (6), 3 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-18 19:50:38,480 INFO L276 IsEmpty]: Start isEmpty. Operand 651 states and 789 transitions. [2022-11-18 19:50:38,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2022-11-18 19:50:38,481 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:50:38,481 INFO L195 NwaCegarLoop]: trace histogram [57, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:50:38,522 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2794ba63-fd96-4ede-a891-c232c833c625/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2022-11-18 19:50:38,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2794ba63-fd96-4ede-a891-c232c833c625/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:50:38,695 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 82 more)] === [2022-11-18 19:50:38,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:50:38,695 INFO L85 PathProgramCache]: Analyzing trace with hash 1444888567, now seen corresponding path program 2 times [2022-11-18 19:50:38,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:50:38,695 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042537619] [2022-11-18 19:50:38,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:50:38,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:50:38,776 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:50:38,777 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [522748591] [2022-11-18 19:50:38,777 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 19:50:38,777 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:50:38,777 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2794ba63-fd96-4ede-a891-c232c833c625/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:50:38,778 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2794ba63-fd96-4ede-a891-c232c833c625/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:50:38,782 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2794ba63-fd96-4ede-a891-c232c833c625/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2022-11-18 19:50:40,399 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 19:50:40,399 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:50:40,411 INFO L263 TraceCheckSpWp]: Trace formula consists of 1543 conjuncts, 208 conjunts are in the unsatisfiable core [2022-11-18 19:50:40,419 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:50:40,433 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 [2022-11-18 19:50:40,448 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 [2022-11-18 19:50:40,472 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 [2022-11-18 19:50:49,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:50:49,660 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 25 treesize of output 27 [2022-11-18 19:50:49,863 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-18 19:50:49,863 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 17 treesize of output 21 [2022-11-18 19:50:53,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:50:53,307 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 27 [2022-11-18 19:50:53,336 INFO L321 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2022-11-18 19:50:53,337 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2022-11-18 19:50:58,908 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-18 19:50:58,908 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 25 treesize of output 31 [2022-11-18 19:51:35,224 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-18 19:51:35,224 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 66 treesize of output 72 [2022-11-18 19:52:05,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:52:06,219 INFO L321 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2022-11-18 19:52:06,219 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 84 treesize of output 93 [2022-11-18 19:52:06,340 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-18 19:52:06,341 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 11 treesize of output 11 [2022-11-18 19:52:47,796 WARN L233 SmtUtils]: Spent 27.94s on a formula simplification. DAG size of input: 89 DAG size of output: 87 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 19:53:33,609 WARN L233 SmtUtils]: Spent 27.85s on a formula simplification that was a NOOP. DAG size: 86 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)