./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/hard-u_unwindbound2.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_9f0b09a0-550f-4276-91d0-7ecfd2ffedad/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_9f0b09a0-550f-4276-91d0-7ecfd2ffedad/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_9f0b09a0-550f-4276-91d0-7ecfd2ffedad/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_9f0b09a0-550f-4276-91d0-7ecfd2ffedad/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/hard-u_unwindbound2.c -s /tmp/vcloud-vcloud-master/worker/run_dir_9f0b09a0-550f-4276-91d0-7ecfd2ffedad/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_9f0b09a0-550f-4276-91d0-7ecfd2ffedad/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 1d887be7dd2c3278ee87053cbed7506ff3c2170c ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 23:57:41,695 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 23:57:41,735 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 23:57:41,783 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 23:57:41,785 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 23:57:41,789 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 23:57:41,791 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 23:57:41,798 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 23:57:41,801 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 23:57:41,808 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 23:57:41,809 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 23:57:41,811 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 23:57:41,812 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 23:57:41,815 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 23:57:41,816 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 23:57:41,818 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 23:57:41,819 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 23:57:41,824 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 23:57:41,828 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 23:57:41,834 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 23:57:41,836 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 23:57:41,838 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 23:57:41,840 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 23:57:41,841 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 23:57:41,845 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 23:57:41,849 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 23:57:41,849 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 23:57:41,850 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 23:57:41,851 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 23:57:41,852 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 23:57:41,852 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 23:57:41,853 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 23:57:41,854 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 23:57:41,855 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 23:57:41,856 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 23:57:41,856 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 23:57:41,856 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 23:57:41,857 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 23:57:41,857 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 23:57:41,858 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 23:57:41,858 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 23:57:41,859 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_9f0b09a0-550f-4276-91d0-7ecfd2ffedad/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-29 23:57:41,887 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 23:57:41,887 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 23:57:41,888 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 23:57:41,888 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 23:57:41,889 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 23:57:41,889 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 23:57:41,889 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 23:57:41,889 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 23:57:41,889 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 23:57:41,890 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 23:57:41,890 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 23:57:41,890 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 23:57:41,890 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 23:57:41,890 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 23:57:41,890 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 23:57:41,891 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 23:57:41,891 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 23:57:41,891 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 23:57:41,891 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 23:57:41,891 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 23:57:41,891 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 23:57:41,892 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 23:57:41,892 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 23:57:41,892 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 23:57:41,892 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 23:57:41,892 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 23:57:41,893 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-29 23:57:41,893 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 23:57:41,893 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 23:57:41,893 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_9f0b09a0-550f-4276-91d0-7ecfd2ffedad/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_9f0b09a0-550f-4276-91d0-7ecfd2ffedad/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1d887be7dd2c3278ee87053cbed7506ff3c2170c [2020-11-29 23:57:42,112 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 23:57:42,150 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 23:57:42,152 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 23:57:42,153 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 23:57:42,157 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 23:57:42,159 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_9f0b09a0-550f-4276-91d0-7ecfd2ffedad/bin/uautomizer/../../sv-benchmarks/c/nla-digbench-scaling/hard-u_unwindbound2.c [2020-11-29 23:57:42,263 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_9f0b09a0-550f-4276-91d0-7ecfd2ffedad/bin/uautomizer/data/b93a5d87b/884e698ea2694d02b53d83a301cad23b/FLAG3a7fca8d6 [2020-11-29 23:57:42,656 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 23:57:42,657 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_9f0b09a0-550f-4276-91d0-7ecfd2ffedad/sv-benchmarks/c/nla-digbench-scaling/hard-u_unwindbound2.c [2020-11-29 23:57:42,663 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_9f0b09a0-550f-4276-91d0-7ecfd2ffedad/bin/uautomizer/data/b93a5d87b/884e698ea2694d02b53d83a301cad23b/FLAG3a7fca8d6 [2020-11-29 23:57:43,060 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_9f0b09a0-550f-4276-91d0-7ecfd2ffedad/bin/uautomizer/data/b93a5d87b/884e698ea2694d02b53d83a301cad23b [2020-11-29 23:57:43,062 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 23:57:43,063 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 23:57:43,070 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 23:57:43,070 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 23:57:43,073 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 23:57:43,074 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 11:57:43" (1/1) ... [2020-11-29 23:57:43,076 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@694d5c7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:57:43, skipping insertion in model container [2020-11-29 23:57:43,076 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 11:57:43" (1/1) ... [2020-11-29 23:57:43,083 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 23:57:43,097 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 23:57:43,272 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 23:57:43,279 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 23:57:43,297 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 23:57:43,308 INFO L208 MainTranslator]: Completed translation [2020-11-29 23:57:43,308 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:57:43 WrapperNode [2020-11-29 23:57:43,308 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 23:57:43,310 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 23:57:43,310 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 23:57:43,310 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 23:57:43,333 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:57:43" (1/1) ... [2020-11-29 23:57:43,341 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:57:43" (1/1) ... [2020-11-29 23:57:43,381 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 23:57:43,382 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 23:57:43,382 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 23:57:43,382 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 23:57:43,390 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:57:43" (1/1) ... [2020-11-29 23:57:43,390 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:57:43" (1/1) ... [2020-11-29 23:57:43,393 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:57:43" (1/1) ... [2020-11-29 23:57:43,393 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:57:43" (1/1) ... [2020-11-29 23:57:43,401 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:57:43" (1/1) ... [2020-11-29 23:57:43,409 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:57:43" (1/1) ... [2020-11-29 23:57:43,423 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:57:43" (1/1) ... [2020-11-29 23:57:43,425 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 23:57:43,426 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 23:57:43,426 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 23:57:43,436 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 23:57:43,438 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:57:43" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9f0b09a0-550f-4276-91d0-7ecfd2ffedad/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 23:57:43,522 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-29 23:57:43,523 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 23:57:43,523 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 23:57:43,524 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 23:57:45,989 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 23:57:45,989 INFO L298 CfgBuilder]: Removed 36 assume(true) statements. [2020-11-29 23:57:45,991 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 11:57:45 BoogieIcfgContainer [2020-11-29 23:57:45,991 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 23:57:45,993 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 23:57:45,993 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 23:57:45,997 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 23:57:45,997 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 11:57:43" (1/3) ... [2020-11-29 23:57:45,998 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13e904eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 11:57:45, skipping insertion in model container [2020-11-29 23:57:45,998 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:57:43" (2/3) ... [2020-11-29 23:57:45,999 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13e904eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 11:57:45, skipping insertion in model container [2020-11-29 23:57:45,999 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 11:57:45" (3/3) ... [2020-11-29 23:57:46,001 INFO L111 eAbstractionObserver]: Analyzing ICFG hard-u_unwindbound2.c [2020-11-29 23:57:46,012 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 23:57:46,016 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2020-11-29 23:57:46,028 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-11-29 23:57:46,052 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 23:57:46,053 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 23:57:46,053 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 23:57:46,053 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 23:57:46,053 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 23:57:46,053 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 23:57:46,054 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 23:57:46,054 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 23:57:46,069 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states. [2020-11-29 23:57:46,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-29 23:57:46,074 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:57:46,074 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:57:46,075 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:57:46,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:57:46,081 INFO L82 PathProgramCache]: Analyzing trace with hash 119446382, now seen corresponding path program 1 times [2020-11-29 23:57:46,089 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:57:46,090 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001003569] [2020-11-29 23:57:46,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:57:46,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:57:46,208 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 23:57:46,209 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001003569] [2020-11-29 23:57:46,209 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:57:46,210 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 23:57:46,210 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130932965] [2020-11-29 23:57:46,214 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-29 23:57:46,215 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:57:46,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-29 23:57:46,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-29 23:57:46,229 INFO L87 Difference]: Start difference. First operand 41 states. Second operand 2 states. [2020-11-29 23:57:46,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:57:46,248 INFO L93 Difference]: Finished difference Result 79 states and 106 transitions. [2020-11-29 23:57:46,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-29 23:57:46,249 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-11-29 23:57:46,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:57:46,256 INFO L225 Difference]: With dead ends: 79 [2020-11-29 23:57:46,256 INFO L226 Difference]: Without dead ends: 37 [2020-11-29 23:57:46,259 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 23:57:46,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-11-29 23:57:46,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2020-11-29 23:57:46,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-11-29 23:57:46,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2020-11-29 23:57:46,292 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 8 [2020-11-29 23:57:46,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:57:46,293 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2020-11-29 23:57:46,293 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-29 23:57:46,293 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2020-11-29 23:57:46,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-29 23:57:46,294 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:57:46,294 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:57:46,294 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-29 23:57:46,295 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:57:46,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:57:46,295 INFO L82 PathProgramCache]: Analyzing trace with hash 176704684, now seen corresponding path program 1 times [2020-11-29 23:57:46,296 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:57:46,296 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068371752] [2020-11-29 23:57:46,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:57:46,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:57:46,394 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 23:57:46,394 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068371752] [2020-11-29 23:57:46,394 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:57:46,394 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 23:57:46,395 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309191871] [2020-11-29 23:57:46,396 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 23:57:46,396 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:57:46,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 23:57:46,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 23:57:46,398 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand 4 states. [2020-11-29 23:57:47,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:57:47,950 INFO L93 Difference]: Finished difference Result 61 states and 69 transitions. [2020-11-29 23:57:47,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 23:57:47,952 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-11-29 23:57:47,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:57:47,953 INFO L225 Difference]: With dead ends: 61 [2020-11-29 23:57:47,953 INFO L226 Difference]: Without dead ends: 59 [2020-11-29 23:57:47,954 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 23:57:47,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-11-29 23:57:47,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 35. [2020-11-29 23:57:47,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-11-29 23:57:47,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2020-11-29 23:57:47,984 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 8 [2020-11-29 23:57:47,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:57:47,984 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2020-11-29 23:57:47,984 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 23:57:47,985 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2020-11-29 23:57:47,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-29 23:57:47,986 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:57:47,986 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:57:47,987 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-29 23:57:47,987 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:57:47,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:57:47,989 INFO L82 PathProgramCache]: Analyzing trace with hash -1985979217, now seen corresponding path program 1 times [2020-11-29 23:57:47,989 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:57:47,990 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248311390] [2020-11-29 23:57:47,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:57:48,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:57:48,084 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 23:57:48,085 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248311390] [2020-11-29 23:57:48,085 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:57:48,085 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 23:57:48,085 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961169498] [2020-11-29 23:57:48,086 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 23:57:48,086 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:57:48,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 23:57:48,087 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 23:57:48,087 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand 4 states. [2020-11-29 23:57:48,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:57:48,112 INFO L93 Difference]: Finished difference Result 56 states and 63 transitions. [2020-11-29 23:57:48,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 23:57:48,114 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-11-29 23:57:48,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:57:48,115 INFO L225 Difference]: With dead ends: 56 [2020-11-29 23:57:48,115 INFO L226 Difference]: Without dead ends: 37 [2020-11-29 23:57:48,116 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 23:57:48,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-11-29 23:57:48,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2020-11-29 23:57:48,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-11-29 23:57:48,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2020-11-29 23:57:48,131 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 10 [2020-11-29 23:57:48,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:57:48,131 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2020-11-29 23:57:48,132 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 23:57:48,132 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2020-11-29 23:57:48,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-29 23:57:48,133 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:57:48,133 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:57:48,133 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-29 23:57:48,135 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:57:48,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:57:48,138 INFO L82 PathProgramCache]: Analyzing trace with hash -1985303953, now seen corresponding path program 1 times [2020-11-29 23:57:48,138 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:57:48,138 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966682785] [2020-11-29 23:57:48,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:57:48,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:57:48,248 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 23:57:48,248 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966682785] [2020-11-29 23:57:48,248 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:57:48,249 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 23:57:48,249 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164191005] [2020-11-29 23:57:48,249 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 23:57:48,249 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:57:48,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 23:57:48,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 23:57:48,250 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand 4 states. [2020-11-29 23:57:52,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:57:52,891 INFO L93 Difference]: Finished difference Result 49 states and 56 transitions. [2020-11-29 23:57:52,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 23:57:52,892 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-11-29 23:57:52,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:57:52,893 INFO L225 Difference]: With dead ends: 49 [2020-11-29 23:57:52,893 INFO L226 Difference]: Without dead ends: 47 [2020-11-29 23:57:52,893 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 23:57:52,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-11-29 23:57:52,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 35. [2020-11-29 23:57:52,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-11-29 23:57:52,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2020-11-29 23:57:52,902 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 10 [2020-11-29 23:57:52,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:57:52,902 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2020-11-29 23:57:52,903 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 23:57:52,903 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2020-11-29 23:57:52,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-29 23:57:52,903 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:57:52,903 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:57:52,904 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-29 23:57:52,904 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:57:52,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:57:52,904 INFO L82 PathProgramCache]: Analyzing trace with hash -911432462, now seen corresponding path program 1 times [2020-11-29 23:57:52,905 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:57:52,907 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043107365] [2020-11-29 23:57:52,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:57:52,932 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 23:57:52,933 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [441807769] [2020-11-29 23:57:52,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9f0b09a0-550f-4276-91d0-7ecfd2ffedad/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 23:57:53,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:57:53,016 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 12 conjunts are in the unsatisfiable core [2020-11-29 23:57:53,021 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 23:57:53,105 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-29 23:57:53,106 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 23:57:53,195 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 23:57:53,195 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043107365] [2020-11-29 23:57:53,196 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 23:57:53,196 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [441807769] [2020-11-29 23:57:53,196 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:57:53,196 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-29 23:57:53,196 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316084183] [2020-11-29 23:57:53,197 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 23:57:53,197 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:57:53,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 23:57:53,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-11-29 23:57:53,198 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand 6 states. [2020-11-29 23:57:54,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:57:54,218 INFO L93 Difference]: Finished difference Result 81 states and 93 transitions. [2020-11-29 23:57:54,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-29 23:57:54,220 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2020-11-29 23:57:54,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:57:54,221 INFO L225 Difference]: With dead ends: 81 [2020-11-29 23:57:54,221 INFO L226 Difference]: Without dead ends: 58 [2020-11-29 23:57:54,222 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2020-11-29 23:57:54,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-11-29 23:57:54,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 49. [2020-11-29 23:57:54,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-11-29 23:57:54,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 56 transitions. [2020-11-29 23:57:54,232 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 56 transitions. Word has length 12 [2020-11-29 23:57:54,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:57:54,232 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 56 transitions. [2020-11-29 23:57:54,232 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 23:57:54,232 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 56 transitions. [2020-11-29 23:57:54,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-29 23:57:54,233 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:57:54,233 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:57:54,461 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 23:57:54,462 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:57:54,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:57:54,463 INFO L82 PathProgramCache]: Analyzing trace with hash 854054780, now seen corresponding path program 1 times [2020-11-29 23:57:54,463 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:57:54,463 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504575007] [2020-11-29 23:57:54,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:57:54,476 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 23:57:54,477 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1397016461] [2020-11-29 23:57:54,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9f0b09a0-550f-4276-91d0-7ecfd2ffedad/bin/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 23:57:54,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:57:54,542 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 13 conjunts are in the unsatisfiable core [2020-11-29 23:57:54,544 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 23:57:54,600 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-29 23:57:54,600 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 23:57:54,722 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 23:57:54,723 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504575007] [2020-11-29 23:57:54,723 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 23:57:54,723 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1397016461] [2020-11-29 23:57:54,723 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:57:54,723 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-29 23:57:54,724 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085876721] [2020-11-29 23:57:54,724 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-29 23:57:54,724 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:57:54,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-29 23:57:54,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-11-29 23:57:54,725 INFO L87 Difference]: Start difference. First operand 49 states and 56 transitions. Second operand 7 states. [2020-11-29 23:57:58,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:57:58,177 INFO L93 Difference]: Finished difference Result 53 states and 58 transitions. [2020-11-29 23:57:58,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 23:57:58,178 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-11-29 23:57:58,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:57:58,178 INFO L225 Difference]: With dead ends: 53 [2020-11-29 23:57:58,179 INFO L226 Difference]: Without dead ends: 41 [2020-11-29 23:57:58,179 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-11-29 23:57:58,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-11-29 23:57:58,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2020-11-29 23:57:58,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-11-29 23:57:58,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions. [2020-11-29 23:57:58,190 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 16 [2020-11-29 23:57:58,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:57:58,191 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 45 transitions. [2020-11-29 23:57:58,191 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-29 23:57:58,191 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2020-11-29 23:57:58,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-29 23:57:58,193 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:57:58,193 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:57:58,393 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 23:57:58,394 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:57:58,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:57:58,394 INFO L82 PathProgramCache]: Analyzing trace with hash 644070657, now seen corresponding path program 1 times [2020-11-29 23:57:58,394 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:57:58,395 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517659939] [2020-11-29 23:57:58,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:57:58,406 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 23:57:58,406 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [506208434] [2020-11-29 23:57:58,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9f0b09a0-550f-4276-91d0-7ecfd2ffedad/bin/uautomizer/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 23:57:58,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:57:58,458 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-29 23:57:58,459 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 23:57:58,497 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:57:58,497 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517659939] [2020-11-29 23:57:58,497 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 23:57:58,497 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [506208434] [2020-11-29 23:57:58,498 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 23:57:58,498 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-11-29 23:57:58,498 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359745421] [2020-11-29 23:57:58,498 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 23:57:58,499 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:57:58,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 23:57:58,499 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-29 23:57:58,499 INFO L87 Difference]: Start difference. First operand 41 states and 45 transitions. Second operand 5 states. [2020-11-29 23:57:58,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:57:58,549 INFO L93 Difference]: Finished difference Result 62 states and 69 transitions. [2020-11-29 23:57:58,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 23:57:58,551 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-11-29 23:57:58,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:57:58,552 INFO L225 Difference]: With dead ends: 62 [2020-11-29 23:57:58,552 INFO L226 Difference]: Without dead ends: 43 [2020-11-29 23:57:58,553 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-29 23:57:58,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-11-29 23:57:58,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2020-11-29 23:57:58,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-11-29 23:57:58,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 47 transitions. [2020-11-29 23:57:58,566 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 47 transitions. Word has length 18 [2020-11-29 23:57:58,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:57:58,566 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 47 transitions. [2020-11-29 23:57:58,566 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 23:57:58,567 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 47 transitions. [2020-11-29 23:57:58,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-11-29 23:57:58,568 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:57:58,568 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:57:58,793 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 23:57:58,794 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:57:58,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:57:58,794 INFO L82 PathProgramCache]: Analyzing trace with hash 1125726404, now seen corresponding path program 1 times [2020-11-29 23:57:58,794 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:57:58,795 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635069124] [2020-11-29 23:57:58,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:57:58,806 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 23:57:58,811 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [293978295] [2020-11-29 23:57:58,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9f0b09a0-550f-4276-91d0-7ecfd2ffedad/bin/uautomizer/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 23:57:58,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:57:58,957 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-29 23:57:58,958 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 23:57:59,003 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:57:59,004 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635069124] [2020-11-29 23:57:59,004 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 23:57:59,004 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [293978295] [2020-11-29 23:57:59,004 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 23:57:59,004 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-11-29 23:57:59,005 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551976512] [2020-11-29 23:57:59,005 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 23:57:59,005 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:57:59,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 23:57:59,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-29 23:57:59,006 INFO L87 Difference]: Start difference. First operand 43 states and 47 transitions. Second operand 5 states. [2020-11-29 23:57:59,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:57:59,211 INFO L93 Difference]: Finished difference Result 83 states and 91 transitions. [2020-11-29 23:57:59,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-29 23:57:59,212 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2020-11-29 23:57:59,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:57:59,213 INFO L225 Difference]: With dead ends: 83 [2020-11-29 23:57:59,213 INFO L226 Difference]: Without dead ends: 71 [2020-11-29 23:57:59,214 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-29 23:57:59,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-11-29 23:57:59,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 55. [2020-11-29 23:57:59,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-11-29 23:57:59,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 62 transitions. [2020-11-29 23:57:59,229 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 62 transitions. Word has length 20 [2020-11-29 23:57:59,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:57:59,229 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 62 transitions. [2020-11-29 23:57:59,230 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 23:57:59,230 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 62 transitions. [2020-11-29 23:57:59,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-11-29 23:57:59,230 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:57:59,231 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:57:59,435 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 23:57:59,436 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:57:59,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:57:59,436 INFO L82 PathProgramCache]: Analyzing trace with hash 962736718, now seen corresponding path program 1 times [2020-11-29 23:57:59,436 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:57:59,437 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850928627] [2020-11-29 23:57:59,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:57:59,447 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 23:57:59,447 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2039039349] [2020-11-29 23:57:59,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9f0b09a0-550f-4276-91d0-7ecfd2ffedad/bin/uautomizer/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 23:57:59,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:57:59,514 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-29 23:57:59,516 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 23:57:59,571 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:57:59,571 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850928627] [2020-11-29 23:57:59,572 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 23:57:59,572 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2039039349] [2020-11-29 23:57:59,572 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:57:59,572 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-29 23:57:59,572 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125889692] [2020-11-29 23:57:59,573 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 23:57:59,573 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:57:59,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 23:57:59,574 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-29 23:57:59,574 INFO L87 Difference]: Start difference. First operand 55 states and 62 transitions. Second operand 6 states. [2020-11-29 23:57:59,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:57:59,618 INFO L93 Difference]: Finished difference Result 65 states and 72 transitions. [2020-11-29 23:57:59,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 23:57:59,619 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 24 [2020-11-29 23:57:59,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:57:59,620 INFO L225 Difference]: With dead ends: 65 [2020-11-29 23:57:59,620 INFO L226 Difference]: Without dead ends: 42 [2020-11-29 23:57:59,620 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-11-29 23:57:59,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-11-29 23:57:59,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 39. [2020-11-29 23:57:59,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-11-29 23:57:59,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 40 transitions. [2020-11-29 23:57:59,626 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 40 transitions. Word has length 24 [2020-11-29 23:57:59,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:57:59,626 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 40 transitions. [2020-11-29 23:57:59,626 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 23:57:59,627 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 40 transitions. [2020-11-29 23:57:59,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-11-29 23:57:59,627 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:57:59,627 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:57:59,841 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 23:57:59,841 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:57:59,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:57:59,842 INFO L82 PathProgramCache]: Analyzing trace with hash -219957531, now seen corresponding path program 1 times [2020-11-29 23:57:59,842 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:57:59,842 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521528738] [2020-11-29 23:57:59,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:57:59,851 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 23:57:59,852 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1987562341] [2020-11-29 23:57:59,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9f0b09a0-550f-4276-91d0-7ecfd2ffedad/bin/uautomizer/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 23:57:59,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:57:59,978 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 28 conjunts are in the unsatisfiable core [2020-11-29 23:57:59,980 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 23:58:00,011 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-29 23:58:00,011 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 23:58:02,264 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse8 (mod c_ULTIMATE.start_main_~d~0 4294967296))) (let ((.cse2 (= c_ULTIMATE.start_main_~d~0 0)) (.cse10 (* .cse8 (- 1)))) (let ((.cse1 (div .cse10 4294967296)) (.cse0 (= 0 c_ULTIMATE.start___VERIFIER_assert_~cond)) (.cse9 (not .cse2)) (.cse7 (= 1 c_ULTIMATE.start___VERIFIER_assert_~cond)) (.cse3 (= c_ULTIMATE.start_main_~q~0 0)) (.cse4 (<= 1 .cse8)) (.cse5 (= c_ULTIMATE.start_main_~A~0 c_ULTIMATE.start_main_~r~0))) (or (and .cse0 (< .cse1 0) .cse2 .cse3 .cse4 .cse5) (let ((.cse6 (* 4294967296 .cse1))) (and (<= .cse6 0) .cse7 .cse2 (= (mod (* .cse8 4294967295) 4294967296) 0) .cse3 .cse4 .cse5 (< 0 (+ .cse6 4294967296)))) (and .cse9 (exists ((aux_mod_ULTIMATE.start_main_~p~0_70 Int) (aux_div_ULTIMATE.start_main_~p~0_70 Int)) (and (< aux_mod_ULTIMATE.start_main_~p~0_70 4294967296) (not (= (mod c_ULTIMATE.start_main_~d~0 4294967296) aux_mod_ULTIMATE.start_main_~p~0_70)) (<= 0 aux_mod_ULTIMATE.start_main_~p~0_70) (= (mod (+ aux_mod_ULTIMATE.start_main_~p~0_70 (* aux_div_ULTIMATE.start_main_~p~0_70 4294967296)) c_ULTIMATE.start_main_~d~0) 0))) .cse0 .cse3 .cse4 .cse5) (and .cse0 .cse2 .cse3 .cse4 .cse5 (< 0 (+ (div (+ .cse10 (- 1)) 4294967296) 1))) (and .cse9 .cse7 .cse3 .cse4 .cse5 (exists ((v_prenex_1 Int)) (= (mod (+ (mod c_ULTIMATE.start_main_~d~0 4294967296) (* v_prenex_1 4294967296)) c_ULTIMATE.start_main_~d~0) 0))))))) is different from false [2020-11-29 23:58:02,278 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 5, 8, 1] term [2020-11-29 23:58:02,278 INFO L603 QuantifierPusher]: Distributing 5 conjuncts over 2 disjuncts [2020-11-29 23:58:04,132 WARN L193 SmtUtils]: Spent 1.79 s on a formula simplification. DAG size of input: 33 DAG size of output: 12 [2020-11-29 23:58:04,428 INFO L721 QuantifierPusher]: Run 10 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-11-29 23:58:04,560 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2020-11-29 23:58:04,560 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521528738] [2020-11-29 23:58:04,560 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 23:58:04,561 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1987562341] [2020-11-29 23:58:04,561 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 23:58:04,561 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-11-29 23:58:04,561 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329493678] [2020-11-29 23:58:04,562 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-11-29 23:58:04,562 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:58:04,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-11-29 23:58:04,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=68, Unknown=1, NotChecked=16, Total=110 [2020-11-29 23:58:04,563 INFO L87 Difference]: Start difference. First operand 39 states and 40 transitions. Second operand 11 states. [2020-11-29 23:58:29,647 WARN L193 SmtUtils]: Spent 18.17 s on a formula simplification. DAG size of input: 68 DAG size of output: 34 [2020-11-29 23:58:32,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:58:32,477 INFO L93 Difference]: Finished difference Result 47 states and 49 transitions. [2020-11-29 23:58:32,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-11-29 23:58:32,478 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2020-11-29 23:58:32,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:58:32,479 INFO L225 Difference]: With dead ends: 47 [2020-11-29 23:58:32,479 INFO L226 Difference]: Without dead ends: 45 [2020-11-29 23:58:32,480 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 27.7s TimeCoverageRelationStatistics Valid=86, Invalid=221, Unknown=3, NotChecked=32, Total=342 [2020-11-29 23:58:32,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-11-29 23:58:32,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 44. [2020-11-29 23:58:32,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-11-29 23:58:32,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 46 transitions. [2020-11-29 23:58:32,493 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 46 transitions. Word has length 25 [2020-11-29 23:58:32,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:58:32,494 INFO L481 AbstractCegarLoop]: Abstraction has 44 states and 46 transitions. [2020-11-29 23:58:32,494 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-11-29 23:58:32,494 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 46 transitions. [2020-11-29 23:58:32,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-11-29 23:58:32,495 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:58:32,496 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:58:32,699 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 23:58:32,699 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:58:32,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:58:32,700 INFO L82 PathProgramCache]: Analyzing trace with hash -925600344, now seen corresponding path program 1 times [2020-11-29 23:58:32,700 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:58:32,700 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194134677] [2020-11-29 23:58:32,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:58:32,711 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 23:58:32,713 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1824117975] [2020-11-29 23:58:32,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9f0b09a0-550f-4276-91d0-7ecfd2ffedad/bin/uautomizer/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 23:58:32,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:58:32,829 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:58:32,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:58:32,859 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:58:32,902 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 23:58:32,917 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-29 23:58:33,120 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 23:58:33,157 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 11:58:33 BoogieIcfgContainer [2020-11-29 23:58:33,158 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 23:58:33,158 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 23:58:33,158 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 23:58:33,158 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 23:58:33,159 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 11:57:45" (3/4) ... [2020-11-29 23:58:33,161 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-29 23:58:33,218 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_9f0b09a0-550f-4276-91d0-7ecfd2ffedad/bin/uautomizer/witness.graphml [2020-11-29 23:58:33,218 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 23:58:33,219 INFO L168 Benchmark]: Toolchain (without parser) took 50155.31 ms. Allocated memory was 109.1 MB in the beginning and 132.1 MB in the end (delta: 23.1 MB). Free memory was 76.7 MB in the beginning and 84.6 MB in the end (delta: -7.9 MB). Peak memory consumption was 14.9 MB. Max. memory is 16.1 GB. [2020-11-29 23:58:33,219 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 75.5 MB. Free memory was 37.5 MB in the beginning and 37.5 MB in the end (delta: 34.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 23:58:33,220 INFO L168 Benchmark]: CACSL2BoogieTranslator took 239.18 ms. Allocated memory is still 109.1 MB. Free memory was 76.6 MB in the beginning and 85.2 MB in the end (delta: -8.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-29 23:58:33,220 INFO L168 Benchmark]: Boogie Procedure Inliner took 71.31 ms. Allocated memory is still 109.1 MB. Free memory was 85.2 MB in the beginning and 83.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 23:58:33,221 INFO L168 Benchmark]: Boogie Preprocessor took 43.93 ms. Allocated memory is still 109.1 MB. Free memory was 83.8 MB in the beginning and 82.2 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 23:58:33,221 INFO L168 Benchmark]: RCFGBuilder took 2565.26 ms. Allocated memory is still 109.1 MB. Free memory was 82.2 MB in the beginning and 65.5 MB in the end (delta: 16.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2020-11-29 23:58:33,222 INFO L168 Benchmark]: TraceAbstraction took 47164.44 ms. Allocated memory was 109.1 MB in the beginning and 132.1 MB in the end (delta: 23.1 MB). Free memory was 65.5 MB in the beginning and 87.8 MB in the end (delta: -22.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 16.1 GB. [2020-11-29 23:58:33,223 INFO L168 Benchmark]: Witness Printer took 59.83 ms. Allocated memory is still 132.1 MB. Free memory was 87.8 MB in the beginning and 84.6 MB in the end (delta: 3.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-29 23:58:33,226 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 75.5 MB. Free memory was 37.5 MB in the beginning and 37.5 MB in the end (delta: 34.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 239.18 ms. Allocated memory is still 109.1 MB. Free memory was 76.6 MB in the beginning and 85.2 MB in the end (delta: -8.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 71.31 ms. Allocated memory is still 109.1 MB. Free memory was 85.2 MB in the beginning and 83.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 43.93 ms. Allocated memory is still 109.1 MB. Free memory was 83.8 MB in the beginning and 82.2 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 2565.26 ms. Allocated memory is still 109.1 MB. Free memory was 82.2 MB in the beginning and 65.5 MB in the end (delta: 16.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 47164.44 ms. Allocated memory was 109.1 MB in the beginning and 132.1 MB in the end (delta: 23.1 MB). Free memory was 65.5 MB in the beginning and 87.8 MB in the end (delta: -22.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 16.1 GB. * Witness Printer took 59.83 ms. Allocated memory is still 132.1 MB. Free memory was 87.8 MB in the beginning and 84.6 MB in the end (delta: 3.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 8]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L22] int counter = 0; VAL [counter=0] [L24] unsigned int A, B; [L25] unsigned int r, d, p, q; [L26] A = __VERIFIER_nondet_uint() [L27] B = __VERIFIER_nondet_uint() [L12] COND FALSE !(!cond) VAL [counter=0] [L30] r = A [L31] d = B [L32] p = 1 [L33] q = 0 VAL [counter=0] [L35] EXPR counter++ VAL [counter=1] [L35] COND TRUE counter++<2 [L15] COND FALSE !(!(cond)) VAL [counter=1] [L15] COND FALSE !(!(cond)) VAL [counter=1] [L15] COND FALSE !(!(cond)) VAL [counter=1] [L39] COND FALSE !(!(r >= d)) [L41] d = 2 * d [L42] p = 2 * p VAL [counter=1] [L35] EXPR counter++ VAL [counter=2] [L35] COND TRUE counter++<2 [L15] COND FALSE !(!(cond)) VAL [counter=2] [L15] COND FALSE !(!(cond)) VAL [counter=2] [L15] COND FALSE !(!(cond)) VAL [counter=2] [L39] COND TRUE !(r >= d) VAL [counter=2] [L45] EXPR counter++ VAL [counter=3] [L45] COND FALSE !(counter++<2) [L15] COND FALSE !(!(cond)) VAL [counter=3] [L15] COND TRUE !(cond) VAL [counter=3] [L8] __assert_fail("0", "hard-u.c", 8, "reach_error") VAL [counter=3] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 41 locations, 7 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 47.0s, OverallIterations: 11, TraceHistogramMax: 2, AutomataDifference: 38.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 315 SDtfs, 383 SDslu, 467 SDs, 0 SdLazy, 332 SolverSat, 88 SolverUnsat, 5 SolverUnknown, 0 SolverNotchecked, 14.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 143 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 28.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=55occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 10 MinimizatonAttempts, 65 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 5.2s InterpolantComputationTime, 178 NumberOfCodeBlocks, 178 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 141 ConstructedInterpolants, 1 QuantifiedInterpolants, 24130 SizeOfPredicates, 38 NumberOfNonLiveVariables, 560 ConjunctsInSsa, 76 ConjunctsInUnsatCore, 10 InterpolantComputations, 7 PerfectInterpolantSequences, 8/25 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! Received shutdown request...