./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/freire2_unwindbound2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_1459f804-73f2-4861-b729-6fb47830ec02/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_1459f804-73f2-4861-b729-6fb47830ec02/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_1459f804-73f2-4861-b729-6fb47830ec02/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_1459f804-73f2-4861-b729-6fb47830ec02/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/freire2_unwindbound2.c -s /tmp/vcloud-vcloud-master/worker/run_dir_1459f804-73f2-4861-b729-6fb47830ec02/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_1459f804-73f2-4861-b729-6fb47830ec02/bin/utaipan --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 573aabe1a1502adb4c5e6135ed8c30ce3759c991 .................................................................................................................................................................................................................................................................................................... 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_1459f804-73f2-4861-b729-6fb47830ec02/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_1459f804-73f2-4861-b729-6fb47830ec02/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_1459f804-73f2-4861-b729-6fb47830ec02/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_1459f804-73f2-4861-b729-6fb47830ec02/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/freire2_unwindbound2.c -s /tmp/vcloud-vcloud-master/worker/run_dir_1459f804-73f2-4861-b729-6fb47830ec02/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_1459f804-73f2-4861-b729-6fb47830ec02/bin/utaipan --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 573aabe1a1502adb4c5e6135ed8c30ce3759c991 ............................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 0.2.0-7b2dab5 [2020-12-09 07:11:26,761 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 07:11:26,763 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 07:11:26,796 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 07:11:26,796 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 07:11:26,797 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 07:11:26,798 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 07:11:26,800 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 07:11:26,802 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 07:11:26,802 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 07:11:26,803 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 07:11:26,804 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 07:11:26,805 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 07:11:26,805 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 07:11:26,806 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 07:11:26,807 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 07:11:26,808 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 07:11:26,809 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 07:11:26,810 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 07:11:26,812 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 07:11:26,813 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 07:11:26,814 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 07:11:26,815 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 07:11:26,816 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 07:11:26,818 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 07:11:26,819 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 07:11:26,819 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 07:11:26,820 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 07:11:26,820 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 07:11:26,821 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 07:11:26,822 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 07:11:26,822 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 07:11:26,823 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 07:11:26,823 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 07:11:26,824 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 07:11:26,824 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 07:11:26,825 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 07:11:26,825 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 07:11:26,825 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 07:11:26,826 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 07:11:26,826 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 07:11:26,827 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_1459f804-73f2-4861-b729-6fb47830ec02/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-12-09 07:11:26,844 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 07:11:26,844 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 07:11:26,845 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 07:11:26,845 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 07:11:26,845 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 07:11:26,845 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 07:11:26,845 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 07:11:26,845 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 07:11:26,846 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 07:11:26,846 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 07:11:26,846 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 07:11:26,846 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 07:11:26,846 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 07:11:26,846 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 07:11:26,846 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 07:11:26,847 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 07:11:26,847 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 07:11:26,847 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 07:11:26,847 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 07:11:26,847 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 07:11:26,847 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 07:11:26,847 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 07:11:26,847 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 07:11:26,847 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 07:11:26,848 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 07:11:26,848 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 07:11:26,848 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 07:11:26,848 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 07:11:26,848 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 07:11:26,848 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 07:11:26,848 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 07:11:26,848 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 07:11:26,849 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 07:11:26,849 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 07:11:26,849 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 07:11:26,849 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 07:11:26,849 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 07:11:26,849 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 07:11:26,849 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 07:11:26,849 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_1459f804-73f2-4861-b729-6fb47830ec02/bin/utaipan/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_1459f804-73f2-4861-b729-6fb47830ec02/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 573aabe1a1502adb4c5e6135ed8c30ce3759c991 [2020-12-09 07:11:27,039 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 07:11:27,055 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 07:11:27,057 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 07:11:27,058 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 07:11:27,059 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 07:11:27,059 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_1459f804-73f2-4861-b729-6fb47830ec02/bin/utaipan/../../sv-benchmarks/c/nla-digbench-scaling/freire2_unwindbound2.c [2020-12-09 07:11:27,109 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_1459f804-73f2-4861-b729-6fb47830ec02/bin/utaipan/data/d4d61a984/180e9262d7974b09870c8d6f2ddaab93/FLAGdad86945a [2020-12-09 07:11:27,477 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 07:11:27,477 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_1459f804-73f2-4861-b729-6fb47830ec02/sv-benchmarks/c/nla-digbench-scaling/freire2_unwindbound2.c [2020-12-09 07:11:27,482 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_1459f804-73f2-4861-b729-6fb47830ec02/bin/utaipan/data/d4d61a984/180e9262d7974b09870c8d6f2ddaab93/FLAGdad86945a [2020-12-09 07:11:27,491 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_1459f804-73f2-4861-b729-6fb47830ec02/bin/utaipan/data/d4d61a984/180e9262d7974b09870c8d6f2ddaab93 [2020-12-09 07:11:27,493 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 07:11:27,494 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 07:11:27,495 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 07:11:27,495 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 07:11:27,498 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 07:11:27,498 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 07:11:27" (1/1) ... [2020-12-09 07:11:27,499 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6aa6a113 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:11:27, skipping insertion in model container [2020-12-09 07:11:27,500 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 07:11:27" (1/1) ... [2020-12-09 07:11:27,505 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 07:11:27,516 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 07:11:27,615 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_1459f804-73f2-4861-b729-6fb47830ec02/sv-benchmarks/c/nla-digbench-scaling/freire2_unwindbound2.c[709,722] [2020-12-09 07:11:27,636 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 07:11:27,645 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 07:11:27,653 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_1459f804-73f2-4861-b729-6fb47830ec02/sv-benchmarks/c/nla-digbench-scaling/freire2_unwindbound2.c[709,722] [2020-12-09 07:11:27,663 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 07:11:27,674 INFO L208 MainTranslator]: Completed translation [2020-12-09 07:11:27,674 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:11:27 WrapperNode [2020-12-09 07:11:27,674 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 07:11:27,675 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 07:11:27,675 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 07:11:27,675 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 07:11:27,680 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:11:27" (1/1) ... [2020-12-09 07:11:27,686 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:11:27" (1/1) ... [2020-12-09 07:11:27,700 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 07:11:27,700 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 07:11:27,700 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 07:11:27,700 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 07:11:27,706 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:11:27" (1/1) ... [2020-12-09 07:11:27,706 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:11:27" (1/1) ... [2020-12-09 07:11:27,708 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:11:27" (1/1) ... [2020-12-09 07:11:27,708 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:11:27" (1/1) ... [2020-12-09 07:11:27,712 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:11:27" (1/1) ... [2020-12-09 07:11:27,715 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:11:27" (1/1) ... [2020-12-09 07:11:27,716 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:11:27" (1/1) ... [2020-12-09 07:11:27,718 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 07:11:27,718 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 07:11:27,718 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 07:11:27,718 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 07:11:27,719 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:11:27" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1459f804-73f2-4861-b729-6fb47830ec02/bin/utaipan/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 [2020-12-09 07:11:27,777 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-09 07:11:27,777 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 07:11:27,777 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 07:11:27,777 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 07:11:27,968 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 07:11:27,968 INFO L299 CfgBuilder]: Removed 17 assume(true) statements. [2020-12-09 07:11:27,970 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 07:11:27 BoogieIcfgContainer [2020-12-09 07:11:27,970 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 07:11:27,971 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 07:11:27,971 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 07:11:27,974 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 07:11:27,974 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 07:11:27" (1/3) ... [2020-12-09 07:11:27,975 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b4b7fdf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 07:11:27, skipping insertion in model container [2020-12-09 07:11:27,975 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:11:27" (2/3) ... [2020-12-09 07:11:27,975 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b4b7fdf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 07:11:27, skipping insertion in model container [2020-12-09 07:11:27,975 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 07:11:27" (3/3) ... [2020-12-09 07:11:27,976 INFO L111 eAbstractionObserver]: Analyzing ICFG freire2_unwindbound2.c [2020-12-09 07:11:27,986 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 07:11:27,988 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2020-12-09 07:11:27,996 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-12-09 07:11:28,013 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 07:11:28,013 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 07:11:28,013 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 07:11:28,013 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 07:11:28,013 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 07:11:28,014 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 07:11:28,014 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 07:11:28,014 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 07:11:28,023 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states. [2020-12-09 07:11:28,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-12-09 07:11:28,027 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:11:28,027 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-12-09 07:11:28,028 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]=== [2020-12-09 07:11:28,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:11:28,032 INFO L82 PathProgramCache]: Analyzing trace with hash 113318109, now seen corresponding path program 1 times [2020-12-09 07:11:28,039 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 07:11:28,039 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267919180] [2020-12-09 07:11:28,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 07:11:28,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:11:28,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 07:11:28,138 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267919180] [2020-12-09 07:11:28,138 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 07:11:28,138 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 07:11:28,139 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134928367] [2020-12-09 07:11:28,143 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-09 07:11:28,143 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 07:11:28,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-09 07:11:28,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-09 07:11:28,158 INFO L87 Difference]: Start difference. First operand 29 states. Second operand 2 states. [2020-12-09 07:11:28,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:11:28,174 INFO L93 Difference]: Finished difference Result 57 states and 73 transitions. [2020-12-09 07:11:28,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-09 07:11:28,175 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 5 [2020-12-09 07:11:28,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:11:28,183 INFO L225 Difference]: With dead ends: 57 [2020-12-09 07:11:28,183 INFO L226 Difference]: Without dead ends: 27 [2020-12-09 07:11:28,186 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 [2020-12-09 07:11:28,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-12-09 07:11:28,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2020-12-09 07:11:28,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-12-09 07:11:28,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2020-12-09 07:11:28,216 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 5 [2020-12-09 07:11:28,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:11:28,216 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2020-12-09 07:11:28,216 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-09 07:11:28,216 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2020-12-09 07:11:28,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-12-09 07:11:28,217 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:11:28,217 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-12-09 07:11:28,217 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-09 07:11:28,218 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]=== [2020-12-09 07:11:28,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:11:28,219 INFO L82 PathProgramCache]: Analyzing trace with hash 111966592, now seen corresponding path program 1 times [2020-12-09 07:11:28,219 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 07:11:28,219 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024157687] [2020-12-09 07:11:28,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 07:11:28,236 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-09 07:11:28,237 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1049094200] [2020-12-09 07:11:28,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1459f804-73f2-4861-b729-6fb47830ec02/bin/utaipan/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 [2020-12-09 07:11:28,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-09 07:11:28,280 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-09 07:11:28,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-09 07:11:28,289 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-09 07:11:28,310 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2020-12-09 07:11:28,310 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-09 07:11:28,512 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-12-09 07:11:28,574 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 07:11:28 BoogieIcfgContainer [2020-12-09 07:11:28,574 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 07:11:28,576 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 07:11:28,576 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 07:11:28,577 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 07:11:28,578 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 07:11:27" (3/4) ... [2020-12-09 07:11:28,586 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-09 07:11:28,587 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 07:11:28,592 INFO L168 Benchmark]: Toolchain (without parser) took 1094.07 ms. Allocated memory is still 98.6 MB. Free memory was 58.9 MB in the beginning and 42.3 MB in the end (delta: 16.5 MB). Peak memory consumption was 17.0 MB. Max. memory is 16.1 GB. [2020-12-09 07:11:28,594 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 98.6 MB. Free memory is still 75.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 07:11:28,596 INFO L168 Benchmark]: CACSL2BoogieTranslator took 178.99 ms. Allocated memory is still 98.6 MB. Free memory was 58.6 MB in the beginning and 74.1 MB in the end (delta: -15.5 MB). Peak memory consumption was 11.4 MB. Max. memory is 16.1 GB. [2020-12-09 07:11:28,598 INFO L168 Benchmark]: Boogie Procedure Inliner took 25.05 ms. Allocated memory is still 98.6 MB. Free memory was 74.1 MB in the beginning and 72.6 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 07:11:28,600 INFO L168 Benchmark]: Boogie Preprocessor took 17.44 ms. Allocated memory is still 98.6 MB. Free memory was 72.3 MB in the beginning and 71.2 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 07:11:28,602 INFO L168 Benchmark]: RCFGBuilder took 251.79 ms. Allocated memory is still 98.6 MB. Free memory was 71.2 MB in the beginning and 69.4 MB in the end (delta: 1.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-12-09 07:11:28,604 INFO L168 Benchmark]: TraceAbstraction took 603.39 ms. Allocated memory is still 98.6 MB. Free memory was 68.9 MB in the beginning and 42.3 MB in the end (delta: 26.6 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.1 GB. [2020-12-09 07:11:28,605 INFO L168 Benchmark]: Witness Printer took 11.05 ms. Allocated memory is still 98.6 MB. Free memory is still 42.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 07:11:28,615 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 98.6 MB. Free memory is still 75.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 178.99 ms. Allocated memory is still 98.6 MB. Free memory was 58.6 MB in the beginning and 74.1 MB in the end (delta: -15.5 MB). Peak memory consumption was 11.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 25.05 ms. Allocated memory is still 98.6 MB. Free memory was 74.1 MB in the beginning and 72.6 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 17.44 ms. Allocated memory is still 98.6 MB. Free memory was 72.3 MB in the beginning and 71.2 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 251.79 ms. Allocated memory is still 98.6 MB. Free memory was 71.2 MB in the beginning and 69.4 MB in the end (delta: 1.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 603.39 ms. Allocated memory is still 98.6 MB. Free memory was 68.9 MB in the beginning and 42.3 MB in the end (delta: 26.6 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.1 GB. * Witness Printer took 11.05 ms. Allocated memory is still 98.6 MB. Free memory is still 42.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of to_int at line 34. Possible FailurePath: [L24] int 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++<2 [L17] COND TRUE !(cond) VAL [counter=1] [L19] reach_error() VAL [counter=1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 29 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.5s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 30 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=29occurred 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, 10 NumberOfCodeBlocks, 10 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 4 ConstructedInterpolants, 0 QuantifiedInterpolants, 16 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 0.2.0-7b2dab5 [2020-12-09 07:11:30,297 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 07:11:30,299 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 07:11:30,328 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 07:11:30,329 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 07:11:30,330 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 07:11:30,331 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 07:11:30,333 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 07:11:30,334 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 07:11:30,335 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 07:11:30,336 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 07:11:30,337 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 07:11:30,337 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 07:11:30,338 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 07:11:30,339 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 07:11:30,340 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 07:11:30,340 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 07:11:30,341 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 07:11:30,343 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 07:11:30,345 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 07:11:30,346 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 07:11:30,347 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 07:11:30,348 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 07:11:30,349 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 07:11:30,351 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 07:11:30,352 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 07:11:30,352 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 07:11:30,353 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 07:11:30,353 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 07:11:30,354 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 07:11:30,354 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 07:11:30,355 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 07:11:30,355 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 07:11:30,356 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 07:11:30,357 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 07:11:30,357 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 07:11:30,358 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 07:11:30,358 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 07:11:30,358 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 07:11:30,359 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 07:11:30,360 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 07:11:30,360 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_1459f804-73f2-4861-b729-6fb47830ec02/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2020-12-09 07:11:30,377 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 07:11:30,377 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 07:11:30,378 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 07:11:30,378 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 07:11:30,378 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 07:11:30,378 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 07:11:30,379 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 07:11:30,379 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 07:11:30,379 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 07:11:30,380 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 07:11:30,380 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 07:11:30,380 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 07:11:30,380 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 07:11:30,380 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 07:11:30,381 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 07:11:30,381 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 07:11:30,381 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 07:11:30,381 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-12-09 07:11:30,381 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-12-09 07:11:30,381 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 07:11:30,381 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 07:11:30,381 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 07:11:30,382 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 07:11:30,382 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 07:11:30,382 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-09 07:11:30,382 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 07:11:30,382 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 07:11:30,382 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 07:11:30,382 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 07:11:30,382 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 07:11:30,383 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2020-12-09 07:11:30,383 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2020-12-09 07:11:30,383 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 07:11:30,383 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 07:11:30,383 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 07:11:30,383 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_1459f804-73f2-4861-b729-6fb47830ec02/bin/utaipan/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_1459f804-73f2-4861-b729-6fb47830ec02/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 573aabe1a1502adb4c5e6135ed8c30ce3759c991 [2020-12-09 07:11:30,619 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 07:11:30,638 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 07:11:30,641 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 07:11:30,642 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 07:11:30,642 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 07:11:30,643 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_1459f804-73f2-4861-b729-6fb47830ec02/bin/utaipan/../../sv-benchmarks/c/nla-digbench-scaling/freire2_unwindbound2.c [2020-12-09 07:11:30,685 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_1459f804-73f2-4861-b729-6fb47830ec02/bin/utaipan/data/287b9ab60/d4a7177f70db4d2dabd66c5100b9ca49/FLAGad4220e9c [2020-12-09 07:11:31,060 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 07:11:31,060 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_1459f804-73f2-4861-b729-6fb47830ec02/sv-benchmarks/c/nla-digbench-scaling/freire2_unwindbound2.c [2020-12-09 07:11:31,065 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_1459f804-73f2-4861-b729-6fb47830ec02/bin/utaipan/data/287b9ab60/d4a7177f70db4d2dabd66c5100b9ca49/FLAGad4220e9c [2020-12-09 07:11:31,075 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_1459f804-73f2-4861-b729-6fb47830ec02/bin/utaipan/data/287b9ab60/d4a7177f70db4d2dabd66c5100b9ca49 [2020-12-09 07:11:31,077 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 07:11:31,078 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 07:11:31,079 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 07:11:31,079 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 07:11:31,082 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 07:11:31,082 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 07:11:31" (1/1) ... [2020-12-09 07:11:31,084 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c8b208b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:11:31, skipping insertion in model container [2020-12-09 07:11:31,084 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 07:11:31" (1/1) ... [2020-12-09 07:11:31,089 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 07:11:31,101 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 07:11:31,194 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_1459f804-73f2-4861-b729-6fb47830ec02/sv-benchmarks/c/nla-digbench-scaling/freire2_unwindbound2.c[709,722] [2020-12-09 07:11:31,212 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 07:11:31,221 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 07:11:31,230 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_1459f804-73f2-4861-b729-6fb47830ec02/sv-benchmarks/c/nla-digbench-scaling/freire2_unwindbound2.c[709,722] [2020-12-09 07:11:31,239 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 07:11:31,256 INFO L208 MainTranslator]: Completed translation [2020-12-09 07:11:31,256 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:11:31 WrapperNode [2020-12-09 07:11:31,256 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 07:11:31,257 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 07:11:31,258 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 07:11:31,258 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 07:11:31,265 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:11:31" (1/1) ... [2020-12-09 07:11:31,283 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:11:31" (1/1) ... [2020-12-09 07:11:31,303 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 07:11:31,304 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 07:11:31,304 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 07:11:31,304 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 07:11:31,310 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:11:31" (1/1) ... [2020-12-09 07:11:31,310 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:11:31" (1/1) ... [2020-12-09 07:11:31,313 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:11:31" (1/1) ... [2020-12-09 07:11:31,313 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:11:31" (1/1) ... [2020-12-09 07:11:31,318 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:11:31" (1/1) ... [2020-12-09 07:11:31,321 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:11:31" (1/1) ... [2020-12-09 07:11:31,323 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:11:31" (1/1) ... [2020-12-09 07:11:31,325 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 07:11:31,326 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 07:11:31,326 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 07:11:31,326 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 07:11:31,327 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:11:31" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1459f804-73f2-4861-b729-6fb47830ec02/bin/utaipan/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 [2020-12-09 07:11:31,381 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-12-09 07:11:31,381 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 07:11:31,381 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 07:11:31,381 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 07:11:45,417 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 07:11:45,418 INFO L299 CfgBuilder]: Removed 17 assume(true) statements. [2020-12-09 07:11:45,419 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 07:11:45 BoogieIcfgContainer [2020-12-09 07:11:45,419 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 07:11:45,420 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 07:11:45,420 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 07:11:45,422 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 07:11:45,423 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 07:11:31" (1/3) ... [2020-12-09 07:11:45,423 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e3a738e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 07:11:45, skipping insertion in model container [2020-12-09 07:11:45,423 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:11:31" (2/3) ... [2020-12-09 07:11:45,424 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e3a738e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 07:11:45, skipping insertion in model container [2020-12-09 07:11:45,424 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 07:11:45" (3/3) ... [2020-12-09 07:11:45,425 INFO L111 eAbstractionObserver]: Analyzing ICFG freire2_unwindbound2.c [2020-12-09 07:11:45,434 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 07:11:45,437 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2020-12-09 07:11:45,444 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-12-09 07:11:45,460 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 07:11:45,460 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 07:11:45,460 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 07:11:45,460 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 07:11:45,460 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 07:11:45,460 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 07:11:45,460 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 07:11:45,460 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 07:11:45,469 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2020-12-09 07:11:45,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-09 07:11:45,472 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:11:45,473 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-12-09 07:11:45,473 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]=== [2020-12-09 07:11:45,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:11:45,477 INFO L82 PathProgramCache]: Analyzing trace with hash 890922791, now seen corresponding path program 1 times [2020-12-09 07:11:45,485 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 07:11:45,485 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [981830750] [2020-12-09 07:11:45,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1459f804-73f2-4861-b729-6fb47830ec02/bin/utaipan/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 [2020-12-09 07:11:45,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:11:45,612 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 1 conjunts are in the unsatisfiable core [2020-12-09 07:11:45,615 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 07:11:45,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 07:11:45,630 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 07:11:45,631 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [981830750] [2020-12-09 07:11:45,631 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 07:11:45,632 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 07:11:45,632 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473217676] [2020-12-09 07:11:45,635 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-09 07:11:45,635 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 07:11:45,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-09 07:11:45,644 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-09 07:11:45,645 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 2 states. [2020-12-09 07:11:45,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:11:45,657 INFO L93 Difference]: Finished difference Result 62 states and 78 transitions. [2020-12-09 07:11:45,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-09 07:11:45,658 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 6 [2020-12-09 07:11:45,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:11:45,664 INFO L225 Difference]: With dead ends: 62 [2020-12-09 07:11:45,664 INFO L226 Difference]: Without dead ends: 28 [2020-12-09 07:11:45,666 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-09 07:11:45,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-12-09 07:11:45,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-12-09 07:11:45,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-12-09 07:11:45,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 29 transitions. [2020-12-09 07:11:45,689 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 29 transitions. Word has length 6 [2020-12-09 07:11:45,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:11:45,689 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 29 transitions. [2020-12-09 07:11:45,689 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-09 07:11:45,689 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 29 transitions. [2020-12-09 07:11:45,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-09 07:11:45,690 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:11:45,690 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-12-09 07:11:45,890 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-12-09 07:11:45,891 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]=== [2020-12-09 07:11:45,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:11:45,891 INFO L82 PathProgramCache]: Analyzing trace with hash 889571274, now seen corresponding path program 1 times [2020-12-09 07:11:45,892 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 07:11:45,892 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [422296999] [2020-12-09 07:11:45,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1459f804-73f2-4861-b729-6fb47830ec02/bin/utaipan/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 [2020-12-09 07:11:45,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:11:46,005 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 6 conjunts are in the unsatisfiable core [2020-12-09 07:11:46,005 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 07:11:46,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 07:11:46,163 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 07:11:46,164 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [422296999] [2020-12-09 07:11:46,164 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 07:11:46,164 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 07:11:46,164 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701542583] [2020-12-09 07:11:46,165 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 07:11:46,165 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 07:11:46,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 07:11:46,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-09 07:11:46,166 INFO L87 Difference]: Start difference. First operand 28 states and 29 transitions. Second operand 5 states. [2020-12-09 07:12:05,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:12:05,839 INFO L93 Difference]: Finished difference Result 39 states and 41 transitions. [2020-12-09 07:12:05,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 07:12:05,840 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 6 [2020-12-09 07:12:05,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:12:05,841 INFO L225 Difference]: With dead ends: 39 [2020-12-09 07:12:05,841 INFO L226 Difference]: Without dead ends: 35 [2020-12-09 07:12:05,842 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-09 07:12:05,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-12-09 07:12:05,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 33. [2020-12-09 07:12:05,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-12-09 07:12:05,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 35 transitions. [2020-12-09 07:12:05,847 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 35 transitions. Word has length 6 [2020-12-09 07:12:05,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:12:05,847 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 35 transitions. [2020-12-09 07:12:05,847 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 07:12:05,847 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 35 transitions. [2020-12-09 07:12:05,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-09 07:12:05,848 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:12:05,848 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 07:12:06,049 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-12-09 07:12:06,050 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]=== [2020-12-09 07:12:06,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:12:06,052 INFO L82 PathProgramCache]: Analyzing trace with hash 179657965, now seen corresponding path program 1 times [2020-12-09 07:12:06,054 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 07:12:06,055 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1674781254] [2020-12-09 07:12:06,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1459f804-73f2-4861-b729-6fb47830ec02/bin/utaipan/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 [2020-12-09 07:12:06,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:12:06,936 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 6 conjunts are in the unsatisfiable core [2020-12-09 07:12:06,937 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 07:12:07,341 WARN L197 SmtUtils]: Spent 367.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2020-12-09 07:12:14,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 07:12:14,815 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 07:12:14,815 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1674781254] [2020-12-09 07:12:14,815 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 07:12:14,815 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 07:12:14,815 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770099885] [2020-12-09 07:12:14,816 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 07:12:14,816 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 07:12:14,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 07:12:14,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-09 07:12:14,817 INFO L87 Difference]: Start difference. First operand 33 states and 35 transitions. Second operand 5 states. [2020-12-09 07:12:31,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:12:31,683 INFO L93 Difference]: Finished difference Result 37 states and 40 transitions. [2020-12-09 07:12:31,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-09 07:12:31,777 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2020-12-09 07:12:31,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:12:31,778 INFO L225 Difference]: With dead ends: 37 [2020-12-09 07:12:31,778 INFO L226 Difference]: Without dead ends: 35 [2020-12-09 07:12:31,778 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-09 07:12:31,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-12-09 07:12:31,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 31. [2020-12-09 07:12:31,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-12-09 07:12:31,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 33 transitions. [2020-12-09 07:12:31,783 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 33 transitions. Word has length 8 [2020-12-09 07:12:31,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:12:31,784 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 33 transitions. [2020-12-09 07:12:31,784 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 07:12:31,784 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 33 transitions. [2020-12-09 07:12:31,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-09 07:12:31,784 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:12:31,784 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 07:12:31,985 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-12-09 07:12:31,986 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]=== [2020-12-09 07:12:31,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:12:31,988 INFO L82 PathProgramCache]: Analyzing trace with hash 1248817364, now seen corresponding path program 1 times [2020-12-09 07:12:31,989 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 07:12:31,990 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [386362970] [2020-12-09 07:12:31,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1459f804-73f2-4861-b729-6fb47830ec02/bin/utaipan/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 [2020-12-09 07:12:32,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:12:32,307 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-09 07:12:32,308 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 07:12:32,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 07:12:32,368 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 07:12:32,368 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [386362970] [2020-12-09 07:12:32,368 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 07:12:32,368 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 07:12:32,368 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501638410] [2020-12-09 07:12:32,369 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 07:12:32,369 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 07:12:32,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 07:12:32,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 07:12:32,370 INFO L87 Difference]: Start difference. First operand 31 states and 33 transitions. Second operand 4 states. [2020-12-09 07:12:33,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:12:33,972 INFO L93 Difference]: Finished difference Result 39 states and 40 transitions. [2020-12-09 07:12:33,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 07:12:33,973 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-12-09 07:12:33,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:12:33,973 INFO L225 Difference]: With dead ends: 39 [2020-12-09 07:12:33,973 INFO L226 Difference]: Without dead ends: 29 [2020-12-09 07:12:33,974 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 07:12:33,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-12-09 07:12:33,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-12-09 07:12:33,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-12-09 07:12:33,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 30 transitions. [2020-12-09 07:12:33,978 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 30 transitions. Word has length 9 [2020-12-09 07:12:33,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:12:33,978 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 30 transitions. [2020-12-09 07:12:33,979 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 07:12:33,979 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 30 transitions. [2020-12-09 07:12:33,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-09 07:12:33,979 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:12:33,979 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 07:12:34,180 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-12-09 07:12:34,181 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]=== [2020-12-09 07:12:34,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:12:34,183 INFO L82 PathProgramCache]: Analyzing trace with hash 852768432, now seen corresponding path program 1 times [2020-12-09 07:12:34,184 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 07:12:34,184 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1285711382] [2020-12-09 07:12:34,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1459f804-73f2-4861-b729-6fb47830ec02/bin/utaipan/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 [2020-12-09 07:12:35,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-09 07:12:35,497 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-09 07:13:00,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-09 07:13:00,405 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-09 07:13:00,533 INFO L173 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2020-12-09 07:13:00,533 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-09 07:13:00,734 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2020-12-09 07:13:00,790 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 07:13:00 BoogieIcfgContainer [2020-12-09 07:13:00,790 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 07:13:00,791 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 07:13:00,791 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 07:13:00,791 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 07:13:00,791 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 07:11:45" (3/4) ... [2020-12-09 07:13:00,796 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-12-09 07:13:00,821 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_1459f804-73f2-4861-b729-6fb47830ec02/bin/utaipan/witness.graphml [2020-12-09 07:13:00,821 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 07:13:00,822 INFO L168 Benchmark]: Toolchain (without parser) took 89743.25 ms. Allocated memory was 62.9 MB in the beginning and 75.5 MB in the end (delta: 12.6 MB). Free memory was 44.5 MB in the beginning and 56.7 MB in the end (delta: -12.2 MB). Peak memory consumption was 33.0 MB. Max. memory is 16.1 GB. [2020-12-09 07:13:00,822 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 62.9 MB. Free memory was 46.1 MB in the beginning and 46.0 MB in the end (delta: 84.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 07:13:00,823 INFO L168 Benchmark]: CACSL2BoogieTranslator took 177.69 ms. Allocated memory is still 62.9 MB. Free memory was 44.5 MB in the beginning and 47.2 MB in the end (delta: -2.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-12-09 07:13:00,823 INFO L168 Benchmark]: Boogie Procedure Inliner took 45.71 ms. Allocated memory is still 62.9 MB. Free memory was 47.2 MB in the beginning and 45.6 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 07:13:00,824 INFO L168 Benchmark]: Boogie Preprocessor took 21.88 ms. Allocated memory is still 62.9 MB. Free memory was 45.6 MB in the beginning and 44.1 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 07:13:00,824 INFO L168 Benchmark]: RCFGBuilder took 14092.78 ms. Allocated memory was 62.9 MB in the beginning and 75.5 MB in the end (delta: 12.6 MB). Free memory was 43.9 MB in the beginning and 58.5 MB in the end (delta: -14.6 MB). Peak memory consumption was 20.0 MB. Max. memory is 16.1 GB. [2020-12-09 07:13:00,825 INFO L168 Benchmark]: TraceAbstraction took 75370.28 ms. Allocated memory is still 75.5 MB. Free memory was 58.1 MB in the beginning and 24.4 MB in the end (delta: 33.7 MB). Peak memory consumption was 32.6 MB. Max. memory is 16.1 GB. [2020-12-09 07:13:00,825 INFO L168 Benchmark]: Witness Printer took 30.10 ms. Allocated memory is still 75.5 MB. Free memory was 24.4 MB in the beginning and 56.7 MB in the end (delta: -32.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 07:13:00,828 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 62.9 MB. Free memory was 46.1 MB in the beginning and 46.0 MB in the end (delta: 84.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 177.69 ms. Allocated memory is still 62.9 MB. Free memory was 44.5 MB in the beginning and 47.2 MB in the end (delta: -2.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 45.71 ms. Allocated memory is still 62.9 MB. Free memory was 47.2 MB in the beginning and 45.6 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 21.88 ms. Allocated memory is still 62.9 MB. Free memory was 45.6 MB in the beginning and 44.1 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 14092.78 ms. Allocated memory was 62.9 MB in the beginning and 75.5 MB in the end (delta: 12.6 MB). Free memory was 43.9 MB in the beginning and 58.5 MB in the end (delta: -14.6 MB). Peak memory consumption was 20.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 75370.28 ms. Allocated memory is still 75.5 MB. Free memory was 58.1 MB in the beginning and 24.4 MB in the end (delta: 33.7 MB). Peak memory consumption was 32.6 MB. Max. memory is 16.1 GB. * Witness Printer took 30.10 ms. Allocated memory is still 75.5 MB. Free memory was 24.4 MB in the beginning and 56.7 MB in the end (delta: -32.3 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: 19]: a call to reach_error is reachable a call to reach_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++<2 [L17] COND FALSE !(!(cond)) VAL [counter=1] [L17] COND FALSE !(!(cond)) VAL [counter=1] [L17] COND TRUE !(cond) VAL [counter=1] [L19] 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: 75.2s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 38.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 98 SDtfs, 44 SDslu, 88 SDs, 0 SdLazy, 59 SolverSat, 11 SolverUnsat, 12 SolverUnknown, 0 SolverNotchecked, 37.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 27 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=33occurred in iteration=2, 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, 6 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 2.5s SatisfiabilityAnalysisTime, 8.1s InterpolantComputationTime, 39 NumberOfCodeBlocks, 39 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 25 ConstructedInterpolants, 0 QuantifiedInterpolants, 673 SizeOfPredicates, 10 NumberOfNonLiveVariables, 140 ConjunctsInSsa, 16 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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! Received shutdown request...