./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-fpi/condgf.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b39e7d2-4275-4975-ad13-8f4979227362/bin/uautomizer-GMMbpWq8iD/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b39e7d2-4275-4975-ad13-8f4979227362/bin/uautomizer-GMMbpWq8iD/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b39e7d2-4275-4975-ad13-8f4979227362/bin/uautomizer-GMMbpWq8iD/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b39e7d2-4275-4975-ad13-8f4979227362/bin/uautomizer-GMMbpWq8iD/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-fpi/condgf.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b39e7d2-4275-4975-ad13-8f4979227362/bin/uautomizer-GMMbpWq8iD/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b39e7d2-4275-4975-ad13-8f4979227362/bin/uautomizer-GMMbpWq8iD --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f6e9c50b7debf63002c3de8c5fbbc063838f4d20677e88c6b86a62b1ad965f5f ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 23:17:43,017 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 23:17:43,020 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 23:17:43,101 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 23:17:43,102 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 23:17:43,103 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 23:17:43,106 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 23:17:43,109 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 23:17:43,111 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 23:17:43,113 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 23:17:43,115 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 23:17:43,117 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 23:17:43,118 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 23:17:43,119 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 23:17:43,121 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 23:17:43,124 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 23:17:43,125 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 23:17:43,127 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 23:17:43,129 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 23:17:43,132 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 23:17:43,135 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 23:17:43,137 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 23:17:43,139 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 23:17:43,140 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 23:17:43,145 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 23:17:43,145 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 23:17:43,146 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 23:17:43,147 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 23:17:43,150 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 23:17:43,151 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 23:17:43,152 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 23:17:43,153 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 23:17:43,154 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 23:17:43,157 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 23:17:43,158 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 23:17:43,159 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 23:17:43,160 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 23:17:43,161 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 23:17:43,161 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 23:17:43,163 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 23:17:43,164 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 23:17:43,167 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b39e7d2-4275-4975-ad13-8f4979227362/bin/uautomizer-GMMbpWq8iD/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-28 23:17:43,222 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 23:17:43,222 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 23:17:43,222 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 23:17:43,222 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 23:17:43,224 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 23:17:43,224 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 23:17:43,224 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 23:17:43,225 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 23:17:43,225 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 23:17:43,225 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 23:17:43,225 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 23:17:43,226 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 23:17:43,226 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-28 23:17:43,226 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 23:17:43,226 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-28 23:17:43,227 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 23:17:43,227 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 23:17:43,227 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 23:17:43,227 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-28 23:17:43,227 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 23:17:43,228 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 23:17:43,228 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 23:17:43,228 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 23:17:43,228 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 23:17:43,229 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 23:17:43,229 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-28 23:17:43,229 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 23:17:43,229 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-28 23:17:43,229 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-28 23:17:43,230 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-28 23:17:43,230 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-28 23:17:43,230 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 23:17:43,230 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_0b39e7d2-4275-4975-ad13-8f4979227362/bin/uautomizer-GMMbpWq8iD/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b39e7d2-4275-4975-ad13-8f4979227362/bin/uautomizer-GMMbpWq8iD Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f6e9c50b7debf63002c3de8c5fbbc063838f4d20677e88c6b86a62b1ad965f5f [2021-10-28 23:17:43,692 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 23:17:43,740 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 23:17:43,744 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 23:17:43,746 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 23:17:43,747 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 23:17:43,748 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b39e7d2-4275-4975-ad13-8f4979227362/bin/uautomizer-GMMbpWq8iD/../../sv-benchmarks/c/array-fpi/condgf.c [2021-10-28 23:17:43,855 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b39e7d2-4275-4975-ad13-8f4979227362/bin/uautomizer-GMMbpWq8iD/data/de48abf1a/d328648087654a8bbb225c70971a8562/FLAG843c03329 [2021-10-28 23:17:44,536 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 23:17:44,537 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b39e7d2-4275-4975-ad13-8f4979227362/sv-benchmarks/c/array-fpi/condgf.c [2021-10-28 23:17:44,545 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b39e7d2-4275-4975-ad13-8f4979227362/bin/uautomizer-GMMbpWq8iD/data/de48abf1a/d328648087654a8bbb225c70971a8562/FLAG843c03329 [2021-10-28 23:17:44,893 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b39e7d2-4275-4975-ad13-8f4979227362/bin/uautomizer-GMMbpWq8iD/data/de48abf1a/d328648087654a8bbb225c70971a8562 [2021-10-28 23:17:44,898 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 23:17:44,916 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 23:17:44,921 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 23:17:44,922 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 23:17:44,930 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 23:17:44,931 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:17:44" (1/1) ... [2021-10-28 23:17:44,933 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@438bf52d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:17:44, skipping insertion in model container [2021-10-28 23:17:44,933 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:17:44" (1/1) ... [2021-10-28 23:17:44,943 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 23:17:44,977 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 23:17:45,547 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b39e7d2-4275-4975-ad13-8f4979227362/sv-benchmarks/c/array-fpi/condgf.c[589,602] [2021-10-28 23:17:45,620 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:17:45,646 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 23:17:45,688 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b39e7d2-4275-4975-ad13-8f4979227362/sv-benchmarks/c/array-fpi/condgf.c[589,602] [2021-10-28 23:17:45,728 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:17:45,765 INFO L208 MainTranslator]: Completed translation [2021-10-28 23:17:45,771 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:17:45 WrapperNode [2021-10-28 23:17:45,772 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 23:17:45,786 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 23:17:45,786 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 23:17:45,786 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 23:17:45,796 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:17:45" (1/1) ... [2021-10-28 23:17:45,835 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:17:45" (1/1) ... [2021-10-28 23:17:45,905 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 23:17:45,907 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 23:17:45,907 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 23:17:45,907 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 23:17:45,925 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:17:45" (1/1) ... [2021-10-28 23:17:45,940 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:17:45" (1/1) ... [2021-10-28 23:17:45,947 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:17:45" (1/1) ... [2021-10-28 23:17:45,947 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:17:45" (1/1) ... [2021-10-28 23:17:45,969 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:17:45" (1/1) ... [2021-10-28 23:17:45,991 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:17:45" (1/1) ... [2021-10-28 23:17:46,000 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:17:45" (1/1) ... [2021-10-28 23:17:46,009 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 23:17:46,011 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 23:17:46,012 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 23:17:46,013 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 23:17:46,014 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:17:45" (1/1) ... [2021-10-28 23:17:46,044 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 23:17:46,059 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b39e7d2-4275-4975-ad13-8f4979227362/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:17:46,102 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b39e7d2-4275-4975-ad13-8f4979227362/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 23:17:46,109 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b39e7d2-4275-4975-ad13-8f4979227362/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 23:17:46,159 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-28 23:17:46,159 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 23:17:46,159 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-28 23:17:46,160 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-28 23:17:46,160 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 23:17:46,160 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 23:17:46,161 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-28 23:17:46,161 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-28 23:17:46,596 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 23:17:46,596 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2021-10-28 23:17:46,600 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:17:46 BoogieIcfgContainer [2021-10-28 23:17:46,601 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 23:17:46,603 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 23:17:46,604 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 23:17:46,609 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 23:17:46,610 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 11:17:44" (1/3) ... [2021-10-28 23:17:46,611 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cc1edf6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 11:17:46, skipping insertion in model container [2021-10-28 23:17:46,612 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:17:45" (2/3) ... [2021-10-28 23:17:46,612 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cc1edf6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 11:17:46, skipping insertion in model container [2021-10-28 23:17:46,613 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:17:46" (3/3) ... [2021-10-28 23:17:46,615 INFO L111 eAbstractionObserver]: Analyzing ICFG condgf.c [2021-10-28 23:17:46,622 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 23:17:46,622 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-28 23:17:46,706 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 23:17:46,719 INFO L339 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=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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, mLoopAccelerationTechnique=FAST_UPR [2021-10-28 23:17:46,720 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-28 23:17:46,742 INFO L276 IsEmpty]: Start isEmpty. Operand has 25 states, 23 states have (on average 1.565217391304348) internal successors, (36), 24 states have internal predecessors, (36), 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) [2021-10-28 23:17:46,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-28 23:17:46,750 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:17:46,751 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:17:46,751 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:17:46,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:17:46,762 INFO L85 PathProgramCache]: Analyzing trace with hash -592817118, now seen corresponding path program 1 times [2021-10-28 23:17:46,774 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:17:46,774 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331559686] [2021-10-28 23:17:46,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:17:46,776 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:17:46,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:17:47,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:17:47,039 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:17:47,040 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331559686] [2021-10-28 23:17:47,042 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1331559686] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:17:47,042 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:17:47,043 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-28 23:17:47,050 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074378593] [2021-10-28 23:17:47,058 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-28 23:17:47,059 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:17:47,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-28 23:17:47,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-28 23:17:47,083 INFO L87 Difference]: Start difference. First operand has 25 states, 23 states have (on average 1.565217391304348) internal successors, (36), 24 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:17:47,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:17:47,110 INFO L93 Difference]: Finished difference Result 46 states and 66 transitions. [2021-10-28 23:17:47,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-28 23:17:47,113 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-10-28 23:17:47,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:17:47,124 INFO L225 Difference]: With dead ends: 46 [2021-10-28 23:17:47,125 INFO L226 Difference]: Without dead ends: 21 [2021-10-28 23:17:47,130 INFO L786 BasicCegarLoop]: 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 [2021-10-28 23:17:47,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2021-10-28 23:17:47,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2021-10-28 23:17:47,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 20 states have (on average 1.25) internal successors, (25), 20 states have internal predecessors, (25), 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) [2021-10-28 23:17:47,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2021-10-28 23:17:47,177 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 14 [2021-10-28 23:17:47,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:17:47,178 INFO L470 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2021-10-28 23:17:47,179 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:17:47,179 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2021-10-28 23:17:47,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-28 23:17:47,181 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:17:47,181 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:17:47,182 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-28 23:17:47,182 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:17:47,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:17:47,187 INFO L85 PathProgramCache]: Analyzing trace with hash 108247460, now seen corresponding path program 1 times [2021-10-28 23:17:47,187 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:17:47,188 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295895700] [2021-10-28 23:17:47,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:17:47,188 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:17:47,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:17:47,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:17:47,313 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:17:47,314 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295895700] [2021-10-28 23:17:47,314 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1295895700] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:17:47,314 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:17:47,315 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 23:17:47,315 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651653508] [2021-10-28 23:17:47,319 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 23:17:47,320 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:17:47,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 23:17:47,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-28 23:17:47,324 INFO L87 Difference]: Start difference. First operand 21 states and 25 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:17:47,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:17:47,455 INFO L93 Difference]: Finished difference Result 48 states and 59 transitions. [2021-10-28 23:17:47,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 23:17:47,456 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-10-28 23:17:47,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:17:47,458 INFO L225 Difference]: With dead ends: 48 [2021-10-28 23:17:47,459 INFO L226 Difference]: Without dead ends: 34 [2021-10-28 23:17:47,460 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-28 23:17:47,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2021-10-28 23:17:47,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 24. [2021-10-28 23:17:47,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 23 states have (on average 1.2173913043478262) internal successors, (28), 23 states have internal predecessors, (28), 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) [2021-10-28 23:17:47,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2021-10-28 23:17:47,475 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 14 [2021-10-28 23:17:47,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:17:47,475 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2021-10-28 23:17:47,476 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:17:47,477 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2021-10-28 23:17:47,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-28 23:17:47,479 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:17:47,480 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:17:47,481 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-28 23:17:47,481 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:17:47,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:17:47,488 INFO L85 PathProgramCache]: Analyzing trace with hash -1242970242, now seen corresponding path program 1 times [2021-10-28 23:17:47,488 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:17:47,489 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615499254] [2021-10-28 23:17:47,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:17:47,489 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:17:47,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:17:48,068 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:17:48,068 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:17:48,069 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615499254] [2021-10-28 23:17:48,069 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [615499254] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:17:48,070 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [122210312] [2021-10-28 23:17:48,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:17:48,070 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:17:48,071 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b39e7d2-4275-4975-ad13-8f4979227362/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:17:48,073 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b39e7d2-4275-4975-ad13-8f4979227362/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:17:48,108 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b39e7d2-4275-4975-ad13-8f4979227362/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-28 23:17:48,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:17:48,207 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-28 23:17:48,216 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:17:48,368 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 10 treesize of output 8 [2021-10-28 23:17:48,382 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-10-28 23:17:48,422 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 23:17:48,427 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 23 treesize of output 22 [2021-10-28 23:17:48,757 INFO L354 Elim1Store]: treesize reduction 39, result has 15.2 percent of original size [2021-10-28 23:17:48,758 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 40 treesize of output 27 [2021-10-28 23:17:49,048 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-10-28 23:17:49,053 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 14 [2021-10-28 23:17:49,111 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:17:49,113 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [122210312] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:17:49,113 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 23:17:49,114 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2021-10-28 23:17:49,114 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265120005] [2021-10-28 23:17:49,117 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-28 23:17:49,117 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:17:49,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-28 23:17:49,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2021-10-28 23:17:49,123 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand has 15 states, 15 states have (on average 2.066666666666667) internal successors, (31), 15 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:17:49,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:17:49,668 INFO L93 Difference]: Finished difference Result 57 states and 69 transitions. [2021-10-28 23:17:49,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-28 23:17:49,671 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.066666666666667) internal successors, (31), 15 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-10-28 23:17:49,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:17:49,674 INFO L225 Difference]: With dead ends: 57 [2021-10-28 23:17:49,676 INFO L226 Difference]: Without dead ends: 47 [2021-10-28 23:17:49,677 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=101, Invalid=405, Unknown=0, NotChecked=0, Total=506 [2021-10-28 23:17:49,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2021-10-28 23:17:49,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 36. [2021-10-28 23:17:49,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 35 states have (on average 1.2285714285714286) internal successors, (43), 35 states have internal predecessors, (43), 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) [2021-10-28 23:17:49,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 43 transitions. [2021-10-28 23:17:49,692 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 43 transitions. Word has length 21 [2021-10-28 23:17:49,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:17:49,692 INFO L470 AbstractCegarLoop]: Abstraction has 36 states and 43 transitions. [2021-10-28 23:17:49,693 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.066666666666667) internal successors, (31), 15 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:17:49,693 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 43 transitions. [2021-10-28 23:17:49,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-28 23:17:49,696 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:17:49,696 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:17:49,739 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b39e7d2-4275-4975-ad13-8f4979227362/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-10-28 23:17:49,913 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b39e7d2-4275-4975-ad13-8f4979227362/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-10-28 23:17:49,913 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:17:49,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:17:49,914 INFO L85 PathProgramCache]: Analyzing trace with hash 532037120, now seen corresponding path program 1 times [2021-10-28 23:17:49,914 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:17:49,914 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549838426] [2021-10-28 23:17:49,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:17:49,915 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:17:49,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:17:49,986 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:17:50,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:17:50,096 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:17:50,098 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-10-28 23:17:50,099 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 23:17:50,102 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-28 23:17:50,112 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2021-10-28 23:17:50,137 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 23:17:50,260 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 11:17:50 BoogieIcfgContainer [2021-10-28 23:17:50,261 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 23:17:50,262 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 23:17:50,263 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 23:17:50,263 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 23:17:50,264 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:17:46" (3/4) ... [2021-10-28 23:17:50,276 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-28 23:17:50,425 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b39e7d2-4275-4975-ad13-8f4979227362/bin/uautomizer-GMMbpWq8iD/witness.graphml [2021-10-28 23:17:50,430 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 23:17:50,432 INFO L168 Benchmark]: Toolchain (without parser) took 5515.29 ms. Allocated memory is still 140.5 MB. Free memory was 101.8 MB in the beginning and 47.6 MB in the end (delta: 54.2 MB). Peak memory consumption was 53.2 MB. Max. memory is 16.1 GB. [2021-10-28 23:17:50,432 INFO L168 Benchmark]: CDTParser took 0.42 ms. Allocated memory is still 140.5 MB. Free memory is still 118.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:17:50,433 INFO L168 Benchmark]: CACSL2BoogieTranslator took 863.48 ms. Allocated memory is still 140.5 MB. Free memory was 101.6 MB in the beginning and 114.7 MB in the end (delta: -13.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-28 23:17:50,434 INFO L168 Benchmark]: Boogie Procedure Inliner took 120.09 ms. Allocated memory is still 140.5 MB. Free memory was 114.7 MB in the beginning and 113.1 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 23:17:50,435 INFO L168 Benchmark]: Boogie Preprocessor took 103.65 ms. Allocated memory is still 140.5 MB. Free memory was 113.1 MB in the beginning and 111.7 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:17:50,438 INFO L168 Benchmark]: RCFGBuilder took 589.61 ms. Allocated memory is still 140.5 MB. Free memory was 111.7 MB in the beginning and 100.5 MB in the end (delta: 11.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-28 23:17:50,439 INFO L168 Benchmark]: TraceAbstraction took 3658.57 ms. Allocated memory is still 140.5 MB. Free memory was 100.0 MB in the beginning and 50.2 MB in the end (delta: 49.8 MB). Peak memory consumption was 51.3 MB. Max. memory is 16.1 GB. [2021-10-28 23:17:50,440 INFO L168 Benchmark]: Witness Printer took 167.81 ms. Allocated memory is still 140.5 MB. Free memory was 50.2 MB in the beginning and 47.6 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 23:17:50,449 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.42 ms. Allocated memory is still 140.5 MB. Free memory is still 118.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 863.48 ms. Allocated memory is still 140.5 MB. Free memory was 101.6 MB in the beginning and 114.7 MB in the end (delta: -13.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 120.09 ms. Allocated memory is still 140.5 MB. Free memory was 114.7 MB in the beginning and 113.1 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 103.65 ms. Allocated memory is still 140.5 MB. Free memory was 113.1 MB in the beginning and 111.7 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 589.61 ms. Allocated memory is still 140.5 MB. Free memory was 111.7 MB in the beginning and 100.5 MB in the end (delta: 11.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3658.57 ms. Allocated memory is still 140.5 MB. Free memory was 100.0 MB in the beginning and 50.2 MB in the end (delta: 49.8 MB). Peak memory consumption was 51.3 MB. Max. memory is 16.1 GB. * Witness Printer took 167.81 ms. Allocated memory is still 140.5 MB. Free memory was 50.2 MB in the beginning and 47.6 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 15]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L19] int N; VAL [N=0] [L23] N = __VERIFIER_nondet_int() [L24] COND FALSE !(N <= 0) [L13] COND FALSE !(!cond) VAL [N=1] [L27] int i; [L28] long long sum[1]; [L29] int *a = malloc(sizeof(int)*N); [L31] sum[0] = 0 [L32] i=0 VAL [N=1] [L32] COND TRUE i