./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/freire2_unwindbound5.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_b845a6b5-67eb-4651-987d-1deeb8938ef2/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_b845a6b5-67eb-4651-987d-1deeb8938ef2/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_b845a6b5-67eb-4651-987d-1deeb8938ef2/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_b845a6b5-67eb-4651-987d-1deeb8938ef2/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/freire2_unwindbound5.c -s /tmp/vcloud-vcloud-master/worker/run_dir_b845a6b5-67eb-4651-987d-1deeb8938ef2/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_b845a6b5-67eb-4651-987d-1deeb8938ef2/bin/uautomizer --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 05bc981af08af727cc8a5fe70f318cd57004d0de .......................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_b845a6b5-67eb-4651-987d-1deeb8938ef2/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_b845a6b5-67eb-4651-987d-1deeb8938ef2/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_b845a6b5-67eb-4651-987d-1deeb8938ef2/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_b845a6b5-67eb-4651-987d-1deeb8938ef2/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/freire2_unwindbound5.c -s /tmp/vcloud-vcloud-master/worker/run_dir_b845a6b5-67eb-4651-987d-1deeb8938ef2/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_b845a6b5-67eb-4651-987d-1deeb8938ef2/bin/uautomizer --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 05bc981af08af727cc8a5fe70f318cd57004d0de ................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 0.2.0-a4ecdab [2020-11-29 19:01:52,874 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 19:01:52,878 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 19:01:52,952 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 19:01:52,953 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 19:01:52,960 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 19:01:52,965 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 19:01:52,970 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 19:01:52,973 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 19:01:52,983 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 19:01:52,985 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 19:01:52,987 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 19:01:52,988 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 19:01:52,991 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 19:01:52,994 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 19:01:52,996 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 19:01:52,997 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 19:01:52,999 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 19:01:53,005 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 19:01:53,014 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 19:01:53,016 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 19:01:53,017 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 19:01:53,020 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 19:01:53,021 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 19:01:53,025 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 19:01:53,025 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 19:01:53,026 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 19:01:53,028 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 19:01:53,029 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 19:01:53,030 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 19:01:53,031 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 19:01:53,032 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 19:01:53,034 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 19:01:53,036 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 19:01:53,037 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 19:01:53,038 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 19:01:53,038 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 19:01:53,039 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 19:01:53,039 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 19:01:53,042 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 19:01:53,043 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 19:01:53,045 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_b845a6b5-67eb-4651-987d-1deeb8938ef2/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-29 19:01:53,088 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 19:01:53,089 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 19:01:53,091 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 19:01:53,091 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 19:01:53,092 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 19:01:53,092 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 19:01:53,092 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 19:01:53,092 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 19:01:53,093 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 19:01:53,093 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 19:01:53,094 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 19:01:53,095 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 19:01:53,095 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 19:01:53,095 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 19:01:53,096 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 19:01:53,096 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 19:01:53,096 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 19:01:53,096 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 19:01:53,097 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 19:01:53,097 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 19:01:53,097 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 19:01:53,098 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 19:01:53,098 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 19:01:53,098 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 19:01:53,099 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 19:01:53,099 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 19:01:53,099 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-29 19:01:53,100 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 19:01:53,100 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 19:01:53,100 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-vcloud-master/worker/run_dir_b845a6b5-67eb-4651-987d-1deeb8938ef2/bin/uautomizer/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_b845a6b5-67eb-4651-987d-1deeb8938ef2/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 05bc981af08af727cc8a5fe70f318cd57004d0de [2020-11-29 19:01:53,497 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 19:01:53,541 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 19:01:53,547 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 19:01:53,549 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 19:01:53,550 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 19:01:53,552 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_b845a6b5-67eb-4651-987d-1deeb8938ef2/bin/uautomizer/../../sv-benchmarks/c/nla-digbench-scaling/freire2_unwindbound5.c [2020-11-29 19:01:53,649 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_b845a6b5-67eb-4651-987d-1deeb8938ef2/bin/uautomizer/data/f11ed0cc2/fe2e6a0ff71044b69ad95381dbee06e8/FLAG3ce8d4635 [2020-11-29 19:01:54,286 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 19:01:54,290 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_b845a6b5-67eb-4651-987d-1deeb8938ef2/sv-benchmarks/c/nla-digbench-scaling/freire2_unwindbound5.c [2020-11-29 19:01:54,304 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_b845a6b5-67eb-4651-987d-1deeb8938ef2/bin/uautomizer/data/f11ed0cc2/fe2e6a0ff71044b69ad95381dbee06e8/FLAG3ce8d4635 [2020-11-29 19:01:54,621 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_b845a6b5-67eb-4651-987d-1deeb8938ef2/bin/uautomizer/data/f11ed0cc2/fe2e6a0ff71044b69ad95381dbee06e8 [2020-11-29 19:01:54,624 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 19:01:54,626 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 19:01:54,628 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 19:01:54,628 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 19:01:54,632 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 19:01:54,633 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 07:01:54" (1/1) ... [2020-11-29 19:01:54,635 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57fac4f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:01:54, skipping insertion in model container [2020-11-29 19:01:54,636 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 07:01:54" (1/1) ... [2020-11-29 19:01:54,644 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 19:01:54,663 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 19:01:54,907 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 19:01:54,919 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 19:01:54,953 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 19:01:54,977 INFO L208 MainTranslator]: Completed translation [2020-11-29 19:01:54,978 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:01:54 WrapperNode [2020-11-29 19:01:54,978 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 19:01:54,979 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 19:01:54,979 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 19:01:54,979 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 19:01:54,986 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:01:54" (1/1) ... [2020-11-29 19:01:55,009 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:01:54" (1/1) ... [2020-11-29 19:01:55,046 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 19:01:55,049 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 19:01:55,050 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 19:01:55,051 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 19:01:55,060 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:01:54" (1/1) ... [2020-11-29 19:01:55,061 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:01:54" (1/1) ... [2020-11-29 19:01:55,066 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:01:54" (1/1) ... [2020-11-29 19:01:55,066 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:01:54" (1/1) ... [2020-11-29 19:01:55,088 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:01:54" (1/1) ... [2020-11-29 19:01:55,093 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:01:54" (1/1) ... [2020-11-29 19:01:55,100 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:01:54" (1/1) ... [2020-11-29 19:01:55,108 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 19:01:55,109 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 19:01:55,109 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 19:01:55,115 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 19:01:55,117 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:01:54" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b845a6b5-67eb-4651-987d-1deeb8938ef2/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 19:01:55,204 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-29 19:01:55,204 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 19:01:55,204 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 19:01:55,204 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 19:01:55,645 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 19:01:55,646 INFO L298 CfgBuilder]: Removed 29 assume(true) statements. [2020-11-29 19:01:55,647 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:01:55 BoogieIcfgContainer [2020-11-29 19:01:55,647 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 19:01:55,649 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 19:01:55,651 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 19:01:55,655 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 19:01:55,656 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 07:01:54" (1/3) ... [2020-11-29 19:01:55,657 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c2f8b37 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 07:01:55, skipping insertion in model container [2020-11-29 19:01:55,657 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:01:54" (2/3) ... [2020-11-29 19:01:55,658 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c2f8b37 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 07:01:55, skipping insertion in model container [2020-11-29 19:01:55,658 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:01:55" (3/3) ... [2020-11-29 19:01:55,660 INFO L111 eAbstractionObserver]: Analyzing ICFG freire2_unwindbound5.c [2020-11-29 19:01:55,673 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 19:01:55,679 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2020-11-29 19:01:55,692 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-11-29 19:01:55,739 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 19:01:55,740 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 19:01:55,740 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 19:01:55,740 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 19:01:55,740 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 19:01:55,740 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 19:01:55,741 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 19:01:55,741 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 19:01:55,758 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2020-11-29 19:01:55,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-11-29 19:01:55,765 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:01:55,766 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-11-29 19:01:55,767 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:01:55,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:01:55,773 INFO L82 PathProgramCache]: Analyzing trace with hash 891015143, now seen corresponding path program 1 times [2020-11-29 19:01:55,783 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:01:55,784 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105406781] [2020-11-29 19:01:55,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:01:55,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:01:55,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:01:55,999 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105406781] [2020-11-29 19:01:56,000 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:01:56,000 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 19:01:56,001 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627357313] [2020-11-29 19:01:56,007 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-29 19:01:56,007 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:01:56,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-29 19:01:56,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-29 19:01:56,055 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 2 states. [2020-11-29 19:01:56,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:01:56,079 INFO L93 Difference]: Finished difference Result 62 states and 78 transitions. [2020-11-29 19:01:56,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-29 19:01:56,081 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 6 [2020-11-29 19:01:56,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:01:56,098 INFO L225 Difference]: With dead ends: 62 [2020-11-29 19:01:56,098 INFO L226 Difference]: Without dead ends: 28 [2020-11-29 19:01:56,112 INFO L677 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 [2020-11-29 19:01:56,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-11-29 19:01:56,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-11-29 19:01:56,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-11-29 19:01:56,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 29 transitions. [2020-11-29 19:01:56,155 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 29 transitions. Word has length 6 [2020-11-29 19:01:56,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:01:56,156 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 29 transitions. [2020-11-29 19:01:56,156 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-29 19:01:56,157 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 29 transitions. [2020-11-29 19:01:56,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-11-29 19:01:56,158 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:01:56,158 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-11-29 19:01:56,159 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-29 19:01:56,159 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:01:56,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:01:56,162 INFO L82 PathProgramCache]: Analyzing trace with hash 889571274, now seen corresponding path program 1 times [2020-11-29 19:01:56,163 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:01:56,163 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043805899] [2020-11-29 19:01:56,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:01:56,199 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 19:01:56,202 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1593654545] [2020-11-29 19:01:56,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b845a6b5-67eb-4651-987d-1deeb8938ef2/bin/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:01:56,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:01:56,274 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:01:56,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:01:56,288 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:01:56,310 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 19:01:56,311 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-29 19:01:56,522 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-11-29 19:01:56,548 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 07:01:56 BoogieIcfgContainer [2020-11-29 19:01:56,548 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 19:01:56,549 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 19:01:56,549 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 19:01:56,549 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 19:01:56,550 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:01:55" (3/4) ... [2020-11-29 19:01:56,553 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-29 19:01:56,553 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 19:01:56,556 INFO L168 Benchmark]: Toolchain (without parser) took 1927.96 ms. Allocated memory was 77.6 MB in the beginning and 94.4 MB in the end (delta: 16.8 MB). Free memory was 46.5 MB in the beginning and 57.2 MB in the end (delta: -10.7 MB). Peak memory consumption was 3.3 MB. Max. memory is 16.1 GB. [2020-11-29 19:01:56,557 INFO L168 Benchmark]: CDTParser took 0.38 ms. Allocated memory is still 77.6 MB. Free memory was 38.8 MB in the beginning and 38.8 MB in the end (delta: 34.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 19:01:56,558 INFO L168 Benchmark]: CACSL2BoogieTranslator took 350.32 ms. Allocated memory is still 77.6 MB. Free memory was 46.2 MB in the beginning and 54.9 MB in the end (delta: -8.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-29 19:01:56,559 INFO L168 Benchmark]: Boogie Procedure Inliner took 68.68 ms. Allocated memory is still 77.6 MB. Free memory was 54.9 MB in the beginning and 53.2 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 19:01:56,560 INFO L168 Benchmark]: Boogie Preprocessor took 59.35 ms. Allocated memory is still 77.6 MB. Free memory was 53.2 MB in the beginning and 51.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 19:01:56,561 INFO L168 Benchmark]: RCFGBuilder took 538.85 ms. Allocated memory is still 77.6 MB. Free memory was 51.8 MB in the beginning and 37.8 MB in the end (delta: 14.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-29 19:01:56,562 INFO L168 Benchmark]: TraceAbstraction took 899.10 ms. Allocated memory was 77.6 MB in the beginning and 94.4 MB in the end (delta: 16.8 MB). Free memory was 37.4 MB in the beginning and 57.6 MB in the end (delta: -20.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 19:01:56,566 INFO L168 Benchmark]: Witness Printer took 4.29 ms. Allocated memory is still 94.4 MB. Free memory was 57.6 MB in the beginning and 57.2 MB in the end (delta: 461.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 19:01:56,571 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.38 ms. Allocated memory is still 77.6 MB. Free memory was 38.8 MB in the beginning and 38.8 MB in the end (delta: 34.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 350.32 ms. Allocated memory is still 77.6 MB. Free memory was 46.2 MB in the beginning and 54.9 MB in the end (delta: -8.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 68.68 ms. Allocated memory is still 77.6 MB. Free memory was 54.9 MB in the beginning and 53.2 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 59.35 ms. Allocated memory is still 77.6 MB. Free memory was 53.2 MB in the beginning and 51.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 538.85 ms. Allocated memory is still 77.6 MB. Free memory was 51.8 MB in the beginning and 37.8 MB in the end (delta: 14.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 899.10 ms. Allocated memory was 77.6 MB in the beginning and 94.4 MB in the end (delta: 16.8 MB). Free memory was 37.4 MB in the beginning and 57.6 MB in the end (delta: -20.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 4.29 ms. Allocated memory is still 94.4 MB. Free memory was 57.6 MB in the beginning and 57.2 MB in the end (delta: 461.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 10]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of to_int at line 34. Possible FailurePath: [L24] int counter = 0; VAL [counter=0] [L26] int r; [L27] double a, x, s; [L28] a = __VERIFIER_nondet_double() [L29] x = a [L30] s = 3.25 [L31] r = 1 VAL [counter=0] [L33] EXPR counter++ VAL [counter=1] [L33] COND TRUE counter++<5 [L17] COND TRUE !(cond) VAL [counter=1] [L10] __assert_fail("0", "freire2.c", 10, "reach_error") VAL [counter=1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 32 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.7s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 33 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 12 NumberOfCodeBlocks, 12 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 5 ConstructedInterpolants, 0 QuantifiedInterpolants, 25 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.0-a4ecdab [2020-11-29 19:01:59,429 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 19:01:59,433 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 19:01:59,493 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 19:01:59,494 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 19:01:59,500 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 19:01:59,503 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 19:01:59,508 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 19:01:59,512 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 19:01:59,520 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 19:01:59,522 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 19:01:59,531 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 19:01:59,531 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 19:01:59,533 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 19:01:59,536 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 19:01:59,538 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 19:01:59,539 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 19:01:59,544 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 19:01:59,548 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 19:01:59,555 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 19:01:59,558 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 19:01:59,561 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 19:01:59,562 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 19:01:59,565 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 19:01:59,569 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 19:01:59,570 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 19:01:59,570 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 19:01:59,572 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 19:01:59,573 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 19:01:59,575 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 19:01:59,576 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 19:01:59,577 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 19:01:59,580 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 19:01:59,581 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 19:01:59,583 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 19:01:59,583 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 19:01:59,584 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 19:01:59,585 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 19:01:59,585 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 19:01:59,588 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 19:01:59,589 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 19:01:59,590 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_b845a6b5-67eb-4651-987d-1deeb8938ef2/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-11-29 19:01:59,637 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 19:01:59,637 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 19:01:59,641 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 19:01:59,642 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 19:01:59,642 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 19:01:59,642 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 19:01:59,642 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 19:01:59,643 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 19:01:59,643 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 19:01:59,643 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 19:01:59,644 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 19:01:59,645 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 19:01:59,645 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-29 19:01:59,645 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-29 19:01:59,645 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 19:01:59,646 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 19:01:59,646 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 19:01:59,646 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 19:01:59,646 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 19:01:59,647 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 19:01:59,647 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 19:01:59,647 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 19:01:59,647 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 19:01:59,648 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 19:01:59,648 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 19:01:59,648 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 19:01:59,648 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-11-29 19:01:59,648 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-29 19:01:59,649 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 19:01:59,649 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 19:01:59,649 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-29 19:01:59,649 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_b845a6b5-67eb-4651-987d-1deeb8938ef2/bin/uautomizer/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_b845a6b5-67eb-4651-987d-1deeb8938ef2/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 05bc981af08af727cc8a5fe70f318cd57004d0de [2020-11-29 19:02:00,088 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 19:02:00,120 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 19:02:00,125 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 19:02:00,127 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 19:02:00,128 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 19:02:00,129 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_b845a6b5-67eb-4651-987d-1deeb8938ef2/bin/uautomizer/../../sv-benchmarks/c/nla-digbench-scaling/freire2_unwindbound5.c [2020-11-29 19:02:00,209 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_b845a6b5-67eb-4651-987d-1deeb8938ef2/bin/uautomizer/data/1871c4d6f/b2d2b5ff50f3452287e4d39b078efe20/FLAG7fc8c1206 [2020-11-29 19:02:00,844 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 19:02:00,850 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_b845a6b5-67eb-4651-987d-1deeb8938ef2/sv-benchmarks/c/nla-digbench-scaling/freire2_unwindbound5.c [2020-11-29 19:02:00,860 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_b845a6b5-67eb-4651-987d-1deeb8938ef2/bin/uautomizer/data/1871c4d6f/b2d2b5ff50f3452287e4d39b078efe20/FLAG7fc8c1206 [2020-11-29 19:02:01,164 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_b845a6b5-67eb-4651-987d-1deeb8938ef2/bin/uautomizer/data/1871c4d6f/b2d2b5ff50f3452287e4d39b078efe20 [2020-11-29 19:02:01,169 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 19:02:01,172 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 19:02:01,175 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 19:02:01,176 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 19:02:01,180 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 19:02:01,181 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 07:02:01" (1/1) ... [2020-11-29 19:02:01,183 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@604a686d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:02:01, skipping insertion in model container [2020-11-29 19:02:01,184 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 07:02:01" (1/1) ... [2020-11-29 19:02:01,192 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 19:02:01,210 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 19:02:01,390 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 19:02:01,406 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 19:02:01,440 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 19:02:01,460 INFO L208 MainTranslator]: Completed translation [2020-11-29 19:02:01,460 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:02:01 WrapperNode [2020-11-29 19:02:01,461 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 19:02:01,462 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 19:02:01,462 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 19:02:01,463 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 19:02:01,472 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:02:01" (1/1) ... [2020-11-29 19:02:01,511 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:02:01" (1/1) ... [2020-11-29 19:02:01,561 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 19:02:01,562 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 19:02:01,562 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 19:02:01,563 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 19:02:01,572 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:02:01" (1/1) ... [2020-11-29 19:02:01,572 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:02:01" (1/1) ... [2020-11-29 19:02:01,581 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:02:01" (1/1) ... [2020-11-29 19:02:01,581 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:02:01" (1/1) ... [2020-11-29 19:02:01,603 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:02:01" (1/1) ... [2020-11-29 19:02:01,614 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:02:01" (1/1) ... [2020-11-29 19:02:01,622 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:02:01" (1/1) ... [2020-11-29 19:02:01,626 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 19:02:01,636 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 19:02:01,637 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 19:02:01,637 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 19:02:01,638 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:02:01" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b845a6b5-67eb-4651-987d-1deeb8938ef2/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 19:02:01,718 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-11-29 19:02:01,719 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 19:02:01,720 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 19:02:01,720 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 19:02:12,900 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 19:02:12,900 INFO L298 CfgBuilder]: Removed 29 assume(true) statements. [2020-11-29 19:02:12,902 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:02:12 BoogieIcfgContainer [2020-11-29 19:02:12,903 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 19:02:12,905 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 19:02:12,905 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 19:02:12,909 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 19:02:12,909 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 07:02:01" (1/3) ... [2020-11-29 19:02:12,910 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b06febe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 07:02:12, skipping insertion in model container [2020-11-29 19:02:12,910 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:02:01" (2/3) ... [2020-11-29 19:02:12,911 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b06febe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 07:02:12, skipping insertion in model container [2020-11-29 19:02:12,911 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:02:12" (3/3) ... [2020-11-29 19:02:12,913 INFO L111 eAbstractionObserver]: Analyzing ICFG freire2_unwindbound5.c [2020-11-29 19:02:12,924 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 19:02:12,930 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2020-11-29 19:02:12,943 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-11-29 19:02:12,965 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 19:02:12,966 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 19:02:12,966 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 19:02:12,966 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 19:02:12,966 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 19:02:12,966 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 19:02:12,967 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 19:02:12,967 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 19:02:12,979 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2020-11-29 19:02:12,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-11-29 19:02:12,984 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:02:12,984 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-11-29 19:02:12,985 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:02:12,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:02:12,991 INFO L82 PathProgramCache]: Analyzing trace with hash 891015143, now seen corresponding path program 1 times [2020-11-29 19:02:13,002 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 19:02:13,003 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1638365361] [2020-11-29 19:02:13,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b845a6b5-67eb-4651-987d-1deeb8938ef2/bin/uautomizer/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-11-29 19:02:13,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:02:13,246 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 1 conjunts are in the unsatisfiable core [2020-11-29 19:02:13,251 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:02:13,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:02:13,269 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 19:02:13,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:02:13,274 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1638365361] [2020-11-29 19:02:13,275 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:02:13,275 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-11-29 19:02:13,276 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68507435] [2020-11-29 19:02:13,281 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-29 19:02:13,282 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 19:02:13,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-29 19:02:13,303 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-29 19:02:13,306 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 2 states. [2020-11-29 19:02:13,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:02:13,334 INFO L93 Difference]: Finished difference Result 62 states and 78 transitions. [2020-11-29 19:02:13,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-29 19:02:13,335 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 6 [2020-11-29 19:02:13,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:02:13,355 INFO L225 Difference]: With dead ends: 62 [2020-11-29 19:02:13,367 INFO L226 Difference]: Without dead ends: 28 [2020-11-29 19:02:13,370 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-29 19:02:13,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-11-29 19:02:13,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-11-29 19:02:13,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-11-29 19:02:13,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 29 transitions. [2020-11-29 19:02:13,412 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 29 transitions. Word has length 6 [2020-11-29 19:02:13,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:02:13,413 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 29 transitions. [2020-11-29 19:02:13,428 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-29 19:02:13,428 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 29 transitions. [2020-11-29 19:02:13,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-11-29 19:02:13,429 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:02:13,429 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-11-29 19:02:13,646 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-29 19:02:13,646 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:02:13,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:02:13,649 INFO L82 PathProgramCache]: Analyzing trace with hash 889571274, now seen corresponding path program 1 times [2020-11-29 19:02:13,654 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 19:02:13,655 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [802279616] [2020-11-29 19:02:13,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b845a6b5-67eb-4651-987d-1deeb8938ef2/bin/uautomizer/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-11-29 19:02:13,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:02:13,842 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-29 19:02:13,844 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:02:13,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:02:13,952 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 19:02:17,775 WARN L193 SmtUtils]: Spent 512.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2020-11-29 19:02:17,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:02:17,803 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [802279616] [2020-11-29 19:02:17,803 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:02:17,803 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2020-11-29 19:02:17,804 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810388700] [2020-11-29 19:02:17,805 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-29 19:02:17,805 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 19:02:17,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-29 19:02:17,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-11-29 19:02:17,807 INFO L87 Difference]: Start difference. First operand 28 states and 29 transitions. Second operand 7 states. [2020-11-29 19:02:41,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:02:41,487 INFO L93 Difference]: Finished difference Result 43 states and 45 transitions. [2020-11-29 19:02:41,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-29 19:02:41,488 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 6 [2020-11-29 19:02:41,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:02:41,489 INFO L225 Difference]: With dead ends: 43 [2020-11-29 19:02:41,490 INFO L226 Difference]: Without dead ends: 39 [2020-11-29 19:02:41,491 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-11-29 19:02:41,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-11-29 19:02:41,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 33. [2020-11-29 19:02:41,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-11-29 19:02:41,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 35 transitions. [2020-11-29 19:02:41,501 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 35 transitions. Word has length 6 [2020-11-29 19:02:41,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:02:41,502 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 35 transitions. [2020-11-29 19:02:41,502 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-29 19:02:41,502 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 35 transitions. [2020-11-29 19:02:41,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-29 19:02:41,503 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:02:41,504 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:02:41,726 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-11-29 19:02:41,727 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:02:41,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:02:41,728 INFO L82 PathProgramCache]: Analyzing trace with hash 179688749, now seen corresponding path program 1 times [2020-11-29 19:02:41,728 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 19:02:41,728 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [212251527] [2020-11-29 19:02:41,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b845a6b5-67eb-4651-987d-1deeb8938ef2/bin/uautomizer/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2020-11-29 19:02:42,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:02:42,960 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-29 19:02:42,960 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:02:44,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:02:44,168 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 19:02:46,278 WARN L838 $PredicateComparison]: unable to prove that (= (_ bv1 32) (bvadd (bvmul (_ bv3 32) c_ULTIMATE.start_main_~r~0) ((_ fp.to_sbv 32) roundTowardZero (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv4 32)))) (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse0 c_ULTIMATE.start_main_~x~0) (fp.mul c_currentRoundingMode .cse0 c_ULTIMATE.start_main_~a~0)))) (bvmul (_ bv4 32) (bvmul c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0)) (bvneg (bvmul (bvmul c_ULTIMATE.start_main_~r~0 (_ bv6 32)) c_ULTIMATE.start_main_~r~0)))) is different from false [2020-11-29 19:02:48,331 WARN L860 $PredicateComparison]: unable to prove that (= (_ bv1 32) (bvadd (bvmul (_ bv3 32) c_ULTIMATE.start_main_~r~0) ((_ fp.to_sbv 32) roundTowardZero (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv4 32)))) (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse0 c_ULTIMATE.start_main_~x~0) (fp.mul c_currentRoundingMode .cse0 c_ULTIMATE.start_main_~a~0)))) (bvmul (_ bv4 32) (bvmul c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0)) (bvneg (bvmul (bvmul c_ULTIMATE.start_main_~r~0 (_ bv6 32)) c_ULTIMATE.start_main_~r~0)))) is different from true [2020-11-29 19:02:57,820 WARN L193 SmtUtils]: Spent 1.47 s on a formula simplification that was a NOOP. DAG size: 11 [2020-11-29 19:02:57,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:02:57,823 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [212251527] [2020-11-29 19:02:57,823 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:02:57,823 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 8 [2020-11-29 19:02:57,823 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41608910] [2020-11-29 19:02:57,824 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-29 19:02:57,824 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 19:02:57,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-29 19:02:57,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=30, Unknown=2, NotChecked=10, Total=56 [2020-11-29 19:02:57,826 INFO L87 Difference]: Start difference. First operand 33 states and 35 transitions. Second operand 8 states. [2020-11-29 19:03:05,329 WARN L193 SmtUtils]: Spent 4.54 s on a formula simplification that was a NOOP. DAG size: 14 [2020-11-29 19:03:09,748 WARN L860 $PredicateComparison]: unable to prove that (and (forall ((v_ULTIMATE.start_main_~a~0_11 (_ FloatingPoint 11 53))) (= ((_ fp.to_sbv 32) roundTowardZero (let ((.cse0 (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv4 32)) v_ULTIMATE.start_main_~a~0_11))) (fp.sub c_currentRoundingMode .cse0 .cse0))) (_ bv0 32))) (= (_ bv1 32) c_ULTIMATE.start_main_~r~0) (= c_ULTIMATE.start_main_~a~0 c_ULTIMATE.start_main_~x~0) (= (_ bv1 32) (bvadd (bvmul (_ bv3 32) c_ULTIMATE.start_main_~r~0) ((_ fp.to_sbv 32) roundTowardZero (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (_ bv4 32)))) (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse1 c_ULTIMATE.start_main_~x~0) (fp.mul c_currentRoundingMode .cse1 c_ULTIMATE.start_main_~a~0)))) (bvmul (_ bv4 32) (bvmul c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0)) (bvneg (bvmul (bvmul c_ULTIMATE.start_main_~r~0 (_ bv6 32)) c_ULTIMATE.start_main_~r~0)))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2020-11-29 19:03:12,268 WARN L860 $PredicateComparison]: unable to prove that (and (= (_ bv1 32) c_ULTIMATE.start_main_~r~0) (= c_ULTIMATE.start_main_~a~0 c_ULTIMATE.start_main_~x~0) (= (_ bv1 32) (bvadd (bvmul (_ bv3 32) c_ULTIMATE.start_main_~r~0) ((_ fp.to_sbv 32) roundTowardZero (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv4 32)))) (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse0 c_ULTIMATE.start_main_~x~0) (fp.mul c_currentRoundingMode .cse0 c_ULTIMATE.start_main_~a~0)))) (bvmul (_ bv4 32) (bvmul c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0)) (bvneg (bvmul (bvmul c_ULTIMATE.start_main_~r~0 (_ bv6 32)) c_ULTIMATE.start_main_~r~0)))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2020-11-29 19:03:56,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:03:56,353 INFO L93 Difference]: Finished difference Result 36 states and 39 transitions. [2020-11-29 19:03:56,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-29 19:03:56,353 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 8 [2020-11-29 19:03:56,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:03:56,354 INFO L225 Difference]: With dead ends: 36 [2020-11-29 19:03:56,354 INFO L226 Difference]: Without dead ends: 33 [2020-11-29 19:03:56,355 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 26.6s TimeCoverageRelationStatistics Valid=26, Invalid=54, Unknown=4, NotChecked=48, Total=132 [2020-11-29 19:03:56,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-11-29 19:03:56,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 31. [2020-11-29 19:03:56,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-11-29 19:03:56,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 33 transitions. [2020-11-29 19:03:56,366 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 33 transitions. Word has length 8 [2020-11-29 19:03:56,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:03:56,367 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 33 transitions. [2020-11-29 19:03:56,367 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-29 19:03:56,367 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 33 transitions. [2020-11-29 19:03:56,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-29 19:03:56,368 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:03:56,368 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:03:56,585 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-11-29 19:03:56,586 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:03:56,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:03:56,587 INFO L82 PathProgramCache]: Analyzing trace with hash 1251711063, now seen corresponding path program 1 times [2020-11-29 19:03:56,587 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 19:03:56,588 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1654002974] [2020-11-29 19:03:56,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b845a6b5-67eb-4651-987d-1deeb8938ef2/bin/uautomizer/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2020-11-29 19:03:56,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:03:57,023 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-29 19:03:57,024 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:03:57,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:03:57,044 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 19:03:57,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:03:57,093 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1654002974] [2020-11-29 19:03:57,093 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:03:57,093 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2020-11-29 19:03:57,093 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851151839] [2020-11-29 19:03:57,094 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 19:03:57,094 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 19:03:57,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 19:03:57,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-29 19:03:57,095 INFO L87 Difference]: Start difference. First operand 31 states and 33 transitions. Second operand 6 states. [2020-11-29 19:03:58,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:03:58,356 INFO L93 Difference]: Finished difference Result 64 states and 66 transitions. [2020-11-29 19:03:58,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 19:03:58,358 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 9 [2020-11-29 19:03:58,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:03:58,359 INFO L225 Difference]: With dead ends: 64 [2020-11-29 19:03:58,359 INFO L226 Difference]: Without dead ends: 50 [2020-11-29 19:03:58,360 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-11-29 19:03:58,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-11-29 19:03:58,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 36. [2020-11-29 19:03:58,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-11-29 19:03:58,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 39 transitions. [2020-11-29 19:03:58,371 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 39 transitions. Word has length 9 [2020-11-29 19:03:58,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:03:58,371 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 39 transitions. [2020-11-29 19:03:58,371 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 19:03:58,371 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 39 transitions. [2020-11-29 19:03:58,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-29 19:03:58,372 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:03:58,372 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:03:58,594 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-11-29 19:03:58,594 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:03:58,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:03:58,595 INFO L82 PathProgramCache]: Analyzing trace with hash 882382672, now seen corresponding path program 1 times [2020-11-29 19:03:58,595 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 19:03:58,596 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1482394320] [2020-11-29 19:03:58,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b845a6b5-67eb-4651-987d-1deeb8938ef2/bin/uautomizer/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2020-11-29 19:04:00,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:04:00,435 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:04:03,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:04:03,192 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:04:03,391 INFO L173 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2020-11-29 19:04:03,391 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-29 19:04:03,592 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2020-11-29 19:04:03,621 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 07:04:03 BoogieIcfgContainer [2020-11-29 19:04:03,621 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 19:04:03,622 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 19:04:03,622 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 19:04:03,622 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 19:04:03,623 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:02:12" (3/4) ... [2020-11-29 19:04:03,625 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-29 19:04:03,678 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_b845a6b5-67eb-4651-987d-1deeb8938ef2/bin/uautomizer/witness.graphml [2020-11-29 19:04:03,683 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 19:04:03,685 INFO L168 Benchmark]: Toolchain (without parser) took 122511.75 ms. Allocated memory was 56.6 MB in the beginning and 69.2 MB in the end (delta: 12.6 MB). Free memory was 35.8 MB in the beginning and 36.7 MB in the end (delta: -840.3 kB). Peak memory consumption was 11.5 MB. Max. memory is 16.1 GB. [2020-11-29 19:04:03,686 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 56.6 MB. Free memory was 39.3 MB in the beginning and 39.3 MB in the end (delta: 43.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 19:04:03,689 INFO L168 Benchmark]: CACSL2BoogieTranslator took 285.96 ms. Allocated memory is still 56.6 MB. Free memory was 35.7 MB in the beginning and 24.6 MB in the end (delta: 11.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-29 19:04:03,689 INFO L168 Benchmark]: Boogie Procedure Inliner took 99.14 ms. Allocated memory is still 56.6 MB. Free memory was 24.6 MB in the beginning and 40.3 MB in the end (delta: -15.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-29 19:04:03,690 INFO L168 Benchmark]: Boogie Preprocessor took 73.62 ms. Allocated memory is still 56.6 MB. Free memory was 40.3 MB in the beginning and 38.8 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 19:04:03,690 INFO L168 Benchmark]: RCFGBuilder took 11266.44 ms. Allocated memory was 56.6 MB in the beginning and 69.2 MB in the end (delta: 12.6 MB). Free memory was 38.8 MB in the beginning and 51.3 MB in the end (delta: -12.4 MB). Peak memory consumption was 18.1 MB. Max. memory is 16.1 GB. [2020-11-29 19:04:03,691 INFO L168 Benchmark]: TraceAbstraction took 110716.58 ms. Allocated memory is still 69.2 MB. Free memory was 51.0 MB in the beginning and 38.8 MB in the end (delta: 12.2 MB). Peak memory consumption was 13.2 MB. Max. memory is 16.1 GB. [2020-11-29 19:04:03,691 INFO L168 Benchmark]: Witness Printer took 61.20 ms. Allocated memory is still 69.2 MB. Free memory was 38.8 MB in the beginning and 36.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 19:04:03,694 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 56.6 MB. Free memory was 39.3 MB in the beginning and 39.3 MB in the end (delta: 43.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 285.96 ms. Allocated memory is still 56.6 MB. Free memory was 35.7 MB in the beginning and 24.6 MB in the end (delta: 11.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 99.14 ms. Allocated memory is still 56.6 MB. Free memory was 24.6 MB in the beginning and 40.3 MB in the end (delta: -15.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 73.62 ms. Allocated memory is still 56.6 MB. Free memory was 40.3 MB in the beginning and 38.8 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 11266.44 ms. Allocated memory was 56.6 MB in the beginning and 69.2 MB in the end (delta: 12.6 MB). Free memory was 38.8 MB in the beginning and 51.3 MB in the end (delta: -12.4 MB). Peak memory consumption was 18.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 110716.58 ms. Allocated memory is still 69.2 MB. Free memory was 51.0 MB in the beginning and 38.8 MB in the end (delta: 12.2 MB). Peak memory consumption was 13.2 MB. Max. memory is 16.1 GB. * Witness Printer took 61.20 ms. Allocated memory is still 69.2 MB. Free memory was 38.8 MB in the beginning and 36.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 10]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L24] int counter = 0; VAL [counter=0] [L26] int r; [L27] double a, x, s; [L28] a = __VERIFIER_nondet_double() [L29] x = a [L30] s = 3.25 [L31] r = 1 VAL [counter=0] [L33] EXPR counter++ VAL [counter=1] [L33] COND TRUE counter++<5 [L17] COND FALSE !(!(cond)) VAL [counter=1] [L17] COND FALSE !(!(cond)) VAL [counter=1] [L17] COND TRUE !(cond) VAL [counter=1] [L10] __assert_fail("0", "freire2.c", 10, "reach_error") VAL [counter=1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 32 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 110.6s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 83.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 103 SDtfs, 80 SDslu, 177 SDs, 0 SdLazy, 128 SolverSat, 24 SolverUnsat, 22 SolverUnknown, 0 SolverNotchecked, 68.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 57 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 30.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=36occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 22 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 3.6s SatisfiabilityAnalysisTime, 19.0s InterpolantComputationTime, 39 NumberOfCodeBlocks, 39 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 50 ConstructedInterpolants, 1 QuantifiedInterpolants, 2130 SizeOfPredicates, 11 NumberOfNonLiveVariables, 140 ConjunctsInSsa, 16 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [MP z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forcibly destroying the process Received shutdown request...