./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/hard2_unwindbound2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_5af16b1d-2902-4d1e-adb1-dd80a120b9fa/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_5af16b1d-2902-4d1e-adb1-dd80a120b9fa/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_5af16b1d-2902-4d1e-adb1-dd80a120b9fa/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_5af16b1d-2902-4d1e-adb1-dd80a120b9fa/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/hard2_unwindbound2.c -s /tmp/vcloud-vcloud-master/worker/run_dir_5af16b1d-2902-4d1e-adb1-dd80a120b9fa/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_5af16b1d-2902-4d1e-adb1-dd80a120b9fa/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 e095661a00784e6d7da38858d8505be229f1ade1 .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-28 07:37:52,101 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 07:37:52,103 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 07:37:52,151 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 07:37:52,152 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 07:37:52,153 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 07:37:52,155 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 07:37:52,159 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 07:37:52,170 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 07:37:52,180 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 07:37:52,182 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 07:37:52,184 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 07:37:52,185 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 07:37:52,188 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 07:37:52,194 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 07:37:52,202 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 07:37:52,203 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 07:37:52,205 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 07:37:52,209 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 07:37:52,215 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 07:37:52,218 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 07:37:52,220 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 07:37:52,222 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 07:37:52,223 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 07:37:52,235 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 07:37:52,239 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 07:37:52,239 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 07:37:52,241 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 07:37:52,242 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 07:37:52,244 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 07:37:52,245 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 07:37:52,246 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 07:37:52,248 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 07:37:52,250 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 07:37:52,254 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 07:37:52,255 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 07:37:52,255 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 07:37:52,256 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 07:37:52,256 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 07:37:52,257 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 07:37:52,258 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 07:37:52,262 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_5af16b1d-2902-4d1e-adb1-dd80a120b9fa/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-28 07:37:52,302 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 07:37:52,302 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 07:37:52,303 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-28 07:37:52,303 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-28 07:37:52,303 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-28 07:37:52,312 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-28 07:37:52,313 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-28 07:37:52,313 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-28 07:37:52,313 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-28 07:37:52,313 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-28 07:37:52,314 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-28 07:37:52,315 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-28 07:37:52,315 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-28 07:37:52,315 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-28 07:37:52,316 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-28 07:37:52,317 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 07:37:52,317 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 07:37:52,317 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 07:37:52,317 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 07:37:52,317 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 07:37:52,317 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 07:37:52,318 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 07:37:52,318 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 07:37:52,318 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-28 07:37:52,319 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 07:37:52,319 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 07:37:52,319 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 07:37:52,319 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 07:37:52,320 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 07:37:52,321 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 07:37:52,322 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 07:37:52,322 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 07:37:52,322 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 07:37:52,323 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 07:37:52,323 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 07:37:52,323 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-28 07:37:52,323 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 07:37:52,323 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 07:37:52,323 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 07:37:52,324 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-28 07:37:52,324 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_5af16b1d-2902-4d1e-adb1-dd80a120b9fa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_5af16b1d-2902-4d1e-adb1-dd80a120b9fa/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e095661a00784e6d7da38858d8505be229f1ade1 [2020-11-28 07:37:52,572 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 07:37:52,608 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 07:37:52,610 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 07:37:52,611 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 07:37:52,616 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 07:37:52,617 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_5af16b1d-2902-4d1e-adb1-dd80a120b9fa/bin/utaipan/../../sv-benchmarks/c/nla-digbench-scaling/hard2_unwindbound2.c [2020-11-28 07:37:52,700 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_5af16b1d-2902-4d1e-adb1-dd80a120b9fa/bin/utaipan/data/2d795f96c/4b035ed79a3f4829bbd6637e406b07eb/FLAG2742c0c89 [2020-11-28 07:37:53,182 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 07:37:53,182 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_5af16b1d-2902-4d1e-adb1-dd80a120b9fa/sv-benchmarks/c/nla-digbench-scaling/hard2_unwindbound2.c [2020-11-28 07:37:53,189 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_5af16b1d-2902-4d1e-adb1-dd80a120b9fa/bin/utaipan/data/2d795f96c/4b035ed79a3f4829bbd6637e406b07eb/FLAG2742c0c89 [2020-11-28 07:37:53,563 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_5af16b1d-2902-4d1e-adb1-dd80a120b9fa/bin/utaipan/data/2d795f96c/4b035ed79a3f4829bbd6637e406b07eb [2020-11-28 07:37:53,565 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 07:37:53,567 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 07:37:53,568 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 07:37:53,568 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 07:37:53,579 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 07:37:53,580 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:37:53" (1/1) ... [2020-11-28 07:37:53,583 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@159ea6bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:37:53, skipping insertion in model container [2020-11-28 07:37:53,583 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:37:53" (1/1) ... [2020-11-28 07:37:53,589 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 07:37:53,603 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 07:37:53,764 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:37:53,783 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 07:37:53,823 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:37:53,837 INFO L208 MainTranslator]: Completed translation [2020-11-28 07:37:53,837 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:37:53 WrapperNode [2020-11-28 07:37:53,838 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 07:37:53,839 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 07:37:53,839 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 07:37:53,839 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 07:37:53,847 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:37:53" (1/1) ... [2020-11-28 07:37:53,853 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:37:53" (1/1) ... [2020-11-28 07:37:53,873 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 07:37:53,874 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 07:37:53,874 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 07:37:53,874 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 07:37:53,882 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:37:53" (1/1) ... [2020-11-28 07:37:53,883 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:37:53" (1/1) ... [2020-11-28 07:37:53,885 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:37:53" (1/1) ... [2020-11-28 07:37:53,885 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:37:53" (1/1) ... [2020-11-28 07:37:53,889 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:37:53" (1/1) ... [2020-11-28 07:37:53,894 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:37:53" (1/1) ... [2020-11-28 07:37:53,896 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:37:53" (1/1) ... [2020-11-28 07:37:53,898 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 07:37:53,899 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 07:37:53,899 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 07:37:53,899 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 07:37:53,900 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:37:53" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5af16b1d-2902-4d1e-adb1-dd80a120b9fa/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 [2020-11-28 07:37:53,968 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 07:37:53,969 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 07:37:53,969 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 07:37:53,969 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 07:37:54,381 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 07:37:54,381 INFO L298 CfgBuilder]: Removed 34 assume(true) statements. [2020-11-28 07:37:54,383 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:37:54 BoogieIcfgContainer [2020-11-28 07:37:54,384 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 07:37:54,385 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 07:37:54,385 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 07:37:54,390 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 07:37:54,390 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 07:37:53" (1/3) ... [2020-11-28 07:37:54,403 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b5261d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:37:54, skipping insertion in model container [2020-11-28 07:37:54,403 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:37:53" (2/3) ... [2020-11-28 07:37:54,404 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b5261d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:37:54, skipping insertion in model container [2020-11-28 07:37:54,404 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:37:54" (3/3) ... [2020-11-28 07:37:54,405 INFO L111 eAbstractionObserver]: Analyzing ICFG hard2_unwindbound2.c [2020-11-28 07:37:54,417 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 07:37:54,427 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2020-11-28 07:37:54,443 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-11-28 07:37:54,481 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 07:37:54,484 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 07:37:54,484 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 07:37:54,484 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 07:37:54,484 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 07:37:54,485 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 07:37:54,485 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 07:37:54,485 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 07:37:54,504 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states. [2020-11-28 07:37:54,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-11-28 07:37:54,510 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:37:54,511 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-11-28 07:37:54,513 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:37:54,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:37:54,520 INFO L82 PathProgramCache]: Analyzing trace with hash 148907432, now seen corresponding path program 1 times [2020-11-28 07:37:54,529 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:37:54,531 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290878040] [2020-11-28 07:37:54,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:37:54,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:37:54,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:37:54,786 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290878040] [2020-11-28 07:37:54,786 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:37:54,787 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 07:37:54,788 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769199845] [2020-11-28 07:37:54,792 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 07:37:54,793 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:37:54,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 07:37:54,808 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 07:37:54,810 INFO L87 Difference]: Start difference. First operand 35 states. Second operand 4 states. [2020-11-28 07:37:54,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:37:54,948 INFO L93 Difference]: Finished difference Result 92 states and 126 transitions. [2020-11-28 07:37:54,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 07:37:54,950 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 5 [2020-11-28 07:37:54,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:37:54,960 INFO L225 Difference]: With dead ends: 92 [2020-11-28 07:37:54,960 INFO L226 Difference]: Without dead ends: 54 [2020-11-28 07:37:54,963 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-28 07:37:54,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-11-28 07:37:54,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 31. [2020-11-28 07:37:54,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-11-28 07:37:55,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 34 transitions. [2020-11-28 07:37:55,001 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 34 transitions. Word has length 5 [2020-11-28 07:37:55,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:37:55,002 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 34 transitions. [2020-11-28 07:37:55,002 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 07:37:55,002 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions. [2020-11-28 07:37:55,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-28 07:37:55,003 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:37:55,003 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:37:55,003 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 07:37:55,003 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:37:55,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:37:55,010 INFO L82 PathProgramCache]: Analyzing trace with hash 1365632459, now seen corresponding path program 1 times [2020-11-28 07:37:55,011 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:37:55,011 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608353324] [2020-11-28 07:37:55,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:37:55,029 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 07:37:55,030 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1038775491] [2020-11-28 07:37:55,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5af16b1d-2902-4d1e-adb1-dd80a120b9fa/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 [2020-11-28 07:37:55,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:37:55,109 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-28 07:37:55,115 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:37:55,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:37:55,189 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:37:55,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:37:55,216 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608353324] [2020-11-28 07:37:55,216 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 07:37:55,216 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1038775491] [2020-11-28 07:37:55,216 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:37:55,217 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2020-11-28 07:37:55,217 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432995494] [2020-11-28 07:37:55,218 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 07:37:55,218 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:37:55,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 07:37:55,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-28 07:37:55,220 INFO L87 Difference]: Start difference. First operand 31 states and 34 transitions. Second operand 6 states. [2020-11-28 07:37:55,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:37:55,289 INFO L93 Difference]: Finished difference Result 64 states and 71 transitions. [2020-11-28 07:37:55,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 07:37:55,291 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 7 [2020-11-28 07:37:55,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:37:55,292 INFO L225 Difference]: With dead ends: 64 [2020-11-28 07:37:55,293 INFO L226 Difference]: Without dead ends: 46 [2020-11-28 07:37:55,294 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-11-28 07:37:55,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-11-28 07:37:55,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 41. [2020-11-28 07:37:55,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-11-28 07:37:55,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 47 transitions. [2020-11-28 07:37:55,309 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 47 transitions. Word has length 7 [2020-11-28 07:37:55,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:37:55,309 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 47 transitions. [2020-11-28 07:37:55,309 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 07:37:55,309 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 47 transitions. [2020-11-28 07:37:55,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-28 07:37:55,310 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:37:55,310 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:37:55,511 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-11-28 07:37:55,511 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:37:55,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:37:55,512 INFO L82 PathProgramCache]: Analyzing trace with hash 1366307723, now seen corresponding path program 1 times [2020-11-28 07:37:55,512 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:37:55,512 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623792305] [2020-11-28 07:37:55,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:37:55,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:37:55,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:37:55,596 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623792305] [2020-11-28 07:37:55,596 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:37:55,596 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 07:37:55,596 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237540071] [2020-11-28 07:37:55,597 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 07:37:55,597 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:37:55,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 07:37:55,598 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 07:37:55,598 INFO L87 Difference]: Start difference. First operand 41 states and 47 transitions. Second operand 4 states. [2020-11-28 07:37:55,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:37:55,704 INFO L93 Difference]: Finished difference Result 59 states and 66 transitions. [2020-11-28 07:37:55,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 07:37:55,705 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-11-28 07:37:55,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:37:55,706 INFO L225 Difference]: With dead ends: 59 [2020-11-28 07:37:55,706 INFO L226 Difference]: Without dead ends: 57 [2020-11-28 07:37:55,707 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-28 07:37:55,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-11-28 07:37:55,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 39. [2020-11-28 07:37:55,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-11-28 07:37:55,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 44 transitions. [2020-11-28 07:37:55,716 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 44 transitions. Word has length 7 [2020-11-28 07:37:55,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:37:55,717 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 44 transitions. [2020-11-28 07:37:55,717 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 07:37:55,717 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 44 transitions. [2020-11-28 07:37:55,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-28 07:37:55,718 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:37:55,718 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:37:55,719 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-28 07:37:55,719 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:37:55,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:37:55,720 INFO L82 PathProgramCache]: Analyzing trace with hash -1238084050, now seen corresponding path program 1 times [2020-11-28 07:37:55,720 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:37:55,720 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504507144] [2020-11-28 07:37:55,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:37:55,735 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 07:37:55,735 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1265834424] [2020-11-28 07:37:55,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5af16b1d-2902-4d1e-adb1-dd80a120b9fa/bin/utaipan/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 07:37:55,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:37:55,790 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-28 07:37:55,791 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:37:55,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:37:55,888 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:37:55,907 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-28 07:37:55,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:37:55,921 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504507144] [2020-11-28 07:37:55,921 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 07:37:55,922 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1265834424] [2020-11-28 07:37:55,922 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:37:55,922 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2020-11-28 07:37:55,922 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332847533] [2020-11-28 07:37:55,923 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 07:37:55,923 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:37:55,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 07:37:55,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-28 07:37:55,927 INFO L87 Difference]: Start difference. First operand 39 states and 44 transitions. Second operand 5 states. [2020-11-28 07:37:58,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:37:58,196 INFO L93 Difference]: Finished difference Result 100 states and 114 transitions. [2020-11-28 07:37:58,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-28 07:37:58,197 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-11-28 07:37:58,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:37:58,199 INFO L225 Difference]: With dead ends: 100 [2020-11-28 07:37:58,199 INFO L226 Difference]: Without dead ends: 78 [2020-11-28 07:37:58,200 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-11-28 07:37:58,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-11-28 07:37:58,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 58. [2020-11-28 07:37:58,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-11-28 07:37:58,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 67 transitions. [2020-11-28 07:37:58,214 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 67 transitions. Word has length 9 [2020-11-28 07:37:58,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:37:58,214 INFO L481 AbstractCegarLoop]: Abstraction has 58 states and 67 transitions. [2020-11-28 07:37:58,214 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 07:37:58,215 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 67 transitions. [2020-11-28 07:37:58,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-28 07:37:58,215 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:37:58,216 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:37:58,440 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 07:37:58,440 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:37:58,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:37:58,441 INFO L82 PathProgramCache]: Analyzing trace with hash 1165574392, now seen corresponding path program 1 times [2020-11-28 07:37:58,441 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:37:58,442 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244186601] [2020-11-28 07:37:58,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:37:58,455 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 07:37:58,455 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [266508978] [2020-11-28 07:37:58,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5af16b1d-2902-4d1e-adb1-dd80a120b9fa/bin/utaipan/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 07:37:58,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:37:58,516 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-28 07:37:58,517 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:37:58,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:37:58,557 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:37:58,569 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-28 07:37:58,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:37:58,585 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244186601] [2020-11-28 07:37:58,585 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 07:37:58,585 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [266508978] [2020-11-28 07:37:58,586 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:37:58,586 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2020-11-28 07:37:58,586 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415864286] [2020-11-28 07:37:58,587 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 07:37:58,587 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:37:58,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 07:37:58,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-28 07:37:58,588 INFO L87 Difference]: Start difference. First operand 58 states and 67 transitions. Second operand 5 states. [2020-11-28 07:37:58,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:37:58,696 INFO L93 Difference]: Finished difference Result 76 states and 86 transitions. [2020-11-28 07:37:58,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 07:37:58,699 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-11-28 07:37:58,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:37:58,700 INFO L225 Difference]: With dead ends: 76 [2020-11-28 07:37:58,700 INFO L226 Difference]: Without dead ends: 64 [2020-11-28 07:37:58,701 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-11-28 07:37:58,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-11-28 07:37:58,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 58. [2020-11-28 07:37:58,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-11-28 07:37:58,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 66 transitions. [2020-11-28 07:37:58,724 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 66 transitions. Word has length 13 [2020-11-28 07:37:58,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:37:58,725 INFO L481 AbstractCegarLoop]: Abstraction has 58 states and 66 transitions. [2020-11-28 07:37:58,725 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 07:37:58,726 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 66 transitions. [2020-11-28 07:37:58,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-11-28 07:37:58,727 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:37:58,727 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:37:58,933 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 07:37:58,933 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:37:58,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:37:58,934 INFO L82 PathProgramCache]: Analyzing trace with hash -1802121467, now seen corresponding path program 1 times [2020-11-28 07:37:58,934 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:37:58,935 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578504855] [2020-11-28 07:37:58,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:37:58,948 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 07:37:58,948 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [161091487] [2020-11-28 07:37:58,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5af16b1d-2902-4d1e-adb1-dd80a120b9fa/bin/utaipan/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 07:37:59,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 07:37:59,018 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 07:37:59,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 07:37:59,037 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 07:37:59,093 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2020-11-28 07:37:59,108 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-28 07:37:59,328 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 07:37:59,359 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 07:37:59 BoogieIcfgContainer [2020-11-28 07:37:59,359 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 07:37:59,359 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 07:37:59,359 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 07:37:59,360 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 07:37:59,360 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:37:54" (3/4) ... [2020-11-28 07:37:59,362 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-28 07:37:59,419 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_5af16b1d-2902-4d1e-adb1-dd80a120b9fa/bin/utaipan/witness.graphml [2020-11-28 07:37:59,419 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 07:37:59,421 INFO L168 Benchmark]: Toolchain (without parser) took 5852.94 ms. Allocated memory was 109.1 MB in the beginning and 146.8 MB in the end (delta: 37.7 MB). Free memory was 83.9 MB in the beginning and 59.8 MB in the end (delta: 24.2 MB). Peak memory consumption was 59.8 MB. Max. memory is 16.1 GB. [2020-11-28 07:37:59,421 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 109.1 MB. Free memory is still 65.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:37:59,422 INFO L168 Benchmark]: CACSL2BoogieTranslator took 269.85 ms. Allocated memory is still 109.1 MB. Free memory was 83.7 MB in the beginning and 84.7 MB in the end (delta: -1.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-28 07:37:59,423 INFO L168 Benchmark]: Boogie Procedure Inliner took 34.47 ms. Allocated memory is still 109.1 MB. Free memory was 84.7 MB in the beginning and 82.9 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:37:59,423 INFO L168 Benchmark]: Boogie Preprocessor took 24.19 ms. Allocated memory is still 109.1 MB. Free memory was 82.9 MB in the beginning and 81.8 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:37:59,424 INFO L168 Benchmark]: RCFGBuilder took 484.98 ms. Allocated memory is still 109.1 MB. Free memory was 81.8 MB in the beginning and 62.5 MB in the end (delta: 19.3 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. [2020-11-28 07:37:59,425 INFO L168 Benchmark]: TraceAbstraction took 4973.63 ms. Allocated memory was 109.1 MB in the beginning and 146.8 MB in the end (delta: 37.7 MB). Free memory was 62.2 MB in the beginning and 62.9 MB in the end (delta: -639.8 kB). Peak memory consumption was 36.5 MB. Max. memory is 16.1 GB. [2020-11-28 07:37:59,425 INFO L168 Benchmark]: Witness Printer took 59.84 ms. Allocated memory is still 146.8 MB. Free memory was 62.9 MB in the beginning and 59.8 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:37:59,429 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 109.1 MB. Free memory is still 65.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 269.85 ms. Allocated memory is still 109.1 MB. Free memory was 83.7 MB in the beginning and 84.7 MB in the end (delta: -1.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 34.47 ms. Allocated memory is still 109.1 MB. Free memory was 84.7 MB in the beginning and 82.9 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 24.19 ms. Allocated memory is still 109.1 MB. Free memory was 82.9 MB in the beginning and 81.8 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 484.98 ms. Allocated memory is still 109.1 MB. Free memory was 81.8 MB in the beginning and 62.5 MB in the end (delta: 19.3 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4973.63 ms. Allocated memory was 109.1 MB in the beginning and 146.8 MB in the end (delta: 37.7 MB). Free memory was 62.2 MB in the beginning and 62.9 MB in the end (delta: -639.8 kB). Peak memory consumption was 36.5 MB. Max. memory is 16.1 GB. * Witness Printer took 59.84 ms. Allocated memory is still 146.8 MB. Free memory was 62.9 MB in the beginning and 59.8 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 8]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L22] int counter = 0; [L24] int A, B; [L25] int r, d, p, q; [L26] A = __VERIFIER_nondet_int() [L27] B = 1 [L29] r = A [L30] d = B [L31] p = 1 [L32] q = 0 VAL [counter=0] [L34] EXPR counter++ VAL [counter=1] [L34] COND TRUE counter++<2 [L15] COND FALSE !(!(cond)) VAL [counter=1] [L15] COND FALSE !(!(cond)) VAL [counter=1] [L15] COND FALSE !(!(cond)) VAL [counter=1] [L38] COND FALSE !(!(r >= d)) [L40] d = 2 * d [L41] p = 2 * p VAL [counter=1] [L34] EXPR counter++ VAL [counter=2] [L34] COND TRUE counter++<2 [L15] COND FALSE !(!(cond)) VAL [counter=2] [L15] COND FALSE !(!(cond)) VAL [counter=2] [L15] COND FALSE !(!(cond)) VAL [counter=2] [L38] COND TRUE !(r >= d) VAL [counter=2] [L44] EXPR counter++ VAL [counter=3] [L44] COND FALSE !(counter++<2) [L15] COND FALSE !(!(cond)) VAL [counter=3] [L15] COND TRUE !(cond) VAL [counter=3] [L8] __assert_fail("0", "hard2.c", 8, "reach_error") VAL [counter=3] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 35 locations, 7 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 4.8s, OverallIterations: 6, TraceHistogramMax: 2, AutomataDifference: 2.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 137 SDtfs, 175 SDslu, 222 SDs, 0 SdLazy, 148 SolverSat, 48 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 2.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 64 GetRequests, 42 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=58occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 72 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 65 NumberOfCodeBlocks, 65 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 62 ConstructedInterpolants, 0 QuantifiedInterpolants, 3186 SizeOfPredicates, 11 NumberOfNonLiveVariables, 207 ConjunctsInSsa, 21 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...