./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/nla-digbench-scaling/hard-u_unwindbound10.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3e5ce664 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/nla-digbench-scaling/hard-u_unwindbound10.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 922bb6facca523b8e3d5998565ece8e6b63ec45d .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/nla-digbench-scaling/hard-u_unwindbound10.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 922bb6facca523b8e3d5998565ece8e6b63ec45d ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-3e5ce66 [2020-12-02 21:38:58,322 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-02 21:38:58,325 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-02 21:38:58,361 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-02 21:38:58,361 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-02 21:38:58,363 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-02 21:38:58,364 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-02 21:38:58,367 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-02 21:38:58,369 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-02 21:38:58,370 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-02 21:38:58,371 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-02 21:38:58,372 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-02 21:38:58,373 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-02 21:38:58,376 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-02 21:38:58,377 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-02 21:38:58,379 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-02 21:38:58,382 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-02 21:38:58,383 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-02 21:38:58,388 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-02 21:38:58,390 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-02 21:38:58,392 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-02 21:38:58,393 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-02 21:38:58,395 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-02 21:38:58,396 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-02 21:38:58,399 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-02 21:38:58,399 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-02 21:38:58,399 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-02 21:38:58,400 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-02 21:38:58,401 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-02 21:38:58,402 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-02 21:38:58,402 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-02 21:38:58,403 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-02 21:38:58,404 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-02 21:38:58,405 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-02 21:38:58,406 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-02 21:38:58,406 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-02 21:38:58,407 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-02 21:38:58,408 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-02 21:38:58,408 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-02 21:38:58,409 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-02 21:38:58,410 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-02 21:38:58,411 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-12-02 21:38:58,443 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-02 21:38:58,444 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-02 21:38:58,445 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-02 21:38:58,446 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-02 21:38:58,446 INFO L138 SettingsManager]: * Use SBE=true [2020-12-02 21:38:58,446 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-02 21:38:58,446 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-02 21:38:58,447 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-02 21:38:58,447 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-02 21:38:58,447 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-02 21:38:58,448 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-02 21:38:58,448 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-02 21:38:58,448 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-02 21:38:58,448 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-02 21:38:58,449 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-02 21:38:58,449 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-02 21:38:58,449 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-02 21:38:58,450 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-02 21:38:58,450 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-02 21:38:58,450 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-02 21:38:58,450 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-02 21:38:58,451 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-02 21:38:58,451 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-02 21:38:58,451 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-02 21:38:58,451 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-02 21:38:58,452 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-02 21:38:58,452 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-02 21:38:58,452 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-02 21:38:58,454 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 922bb6facca523b8e3d5998565ece8e6b63ec45d [2020-12-02 21:38:58,855 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-02 21:38:58,897 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-02 21:38:58,902 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-02 21:38:58,903 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-02 21:38:58,904 INFO L275 PluginConnector]: CDTParser initialized [2020-12-02 21:38:58,907 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/hard-u_unwindbound10.c [2020-12-02 21:38:58,988 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ec417cfd3/56f8d1e697dd4b459f229ebb3fb1efba/FLAGf2b4eba07 [2020-12-02 21:38:59,614 INFO L306 CDTParser]: Found 1 translation units. [2020-12-02 21:38:59,615 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/hard-u_unwindbound10.c [2020-12-02 21:38:59,623 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ec417cfd3/56f8d1e697dd4b459f229ebb3fb1efba/FLAGf2b4eba07 [2020-12-02 21:38:59,938 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ec417cfd3/56f8d1e697dd4b459f229ebb3fb1efba [2020-12-02 21:38:59,943 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-02 21:38:59,946 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-02 21:38:59,948 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-02 21:38:59,948 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-02 21:38:59,955 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-02 21:38:59,955 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 09:38:59" (1/1) ... [2020-12-02 21:38:59,959 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@698f4b89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:38:59, skipping insertion in model container [2020-12-02 21:38:59,959 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 09:38:59" (1/1) ... [2020-12-02 21:38:59,966 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-02 21:38:59,982 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-02 21:39:00,178 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/hard-u_unwindbound10.c[537,550] [2020-12-02 21:39:00,207 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-02 21:39:00,229 INFO L203 MainTranslator]: Completed pre-run [2020-12-02 21:39:00,250 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/hard-u_unwindbound10.c[537,550] [2020-12-02 21:39:00,273 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-02 21:39:00,295 INFO L208 MainTranslator]: Completed translation [2020-12-02 21:39:00,296 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:39:00 WrapperNode [2020-12-02 21:39:00,297 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-02 21:39:00,301 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-02 21:39:00,301 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-02 21:39:00,303 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-02 21:39:00,314 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:39:00" (1/1) ... [2020-12-02 21:39:00,339 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:39:00" (1/1) ... [2020-12-02 21:39:00,384 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-02 21:39:00,386 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-02 21:39:00,387 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-02 21:39:00,387 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-02 21:39:00,400 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:39:00" (1/1) ... [2020-12-02 21:39:00,400 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:39:00" (1/1) ... [2020-12-02 21:39:00,408 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:39:00" (1/1) ... [2020-12-02 21:39:00,408 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:39:00" (1/1) ... [2020-12-02 21:39:00,427 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:39:00" (1/1) ... [2020-12-02 21:39:00,439 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:39:00" (1/1) ... [2020-12-02 21:39:00,441 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:39:00" (1/1) ... [2020-12-02 21:39:00,444 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-02 21:39:00,445 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-02 21:39:00,446 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-02 21:39:00,446 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-02 21:39:00,447 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:39:00" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-12-02 21:39:00,562 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-02 21:39:00,562 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-02 21:39:00,563 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-02 21:39:00,563 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-02 21:39:00,930 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-02 21:39:00,931 INFO L298 CfgBuilder]: Removed 22 assume(true) statements. [2020-12-02 21:39:00,933 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 09:39:00 BoogieIcfgContainer [2020-12-02 21:39:00,934 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-02 21:39:00,936 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-02 21:39:00,938 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-02 21:39:00,945 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-02 21:39:00,948 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 09:38:59" (1/3) ... [2020-12-02 21:39:00,950 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@176907a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 09:39:00, skipping insertion in model container [2020-12-02 21:39:00,950 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:39:00" (2/3) ... [2020-12-02 21:39:00,951 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@176907a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 09:39:00, skipping insertion in model container [2020-12-02 21:39:00,951 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 09:39:00" (3/3) ... [2020-12-02 21:39:00,953 INFO L111 eAbstractionObserver]: Analyzing ICFG hard-u_unwindbound10.c [2020-12-02 21:39:00,988 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-02 21:39:00,992 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2020-12-02 21:39:01,005 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-12-02 21:39:01,036 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-02 21:39:01,036 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-02 21:39:01,036 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-02 21:39:01,037 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-02 21:39:01,037 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-02 21:39:01,037 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-02 21:39:01,037 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-02 21:39:01,038 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-02 21:39:01,056 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states. [2020-12-02 21:39:01,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-02 21:39:01,062 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 21:39:01,063 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 21:39:01,064 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]=== [2020-12-02 21:39:01,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 21:39:01,071 INFO L82 PathProgramCache]: Analyzing trace with hash 119446382, now seen corresponding path program 1 times [2020-12-02 21:39:01,083 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 21:39:01,084 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346019482] [2020-12-02 21:39:01,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 21:39:01,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 21:39:01,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 21:39:01,258 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346019482] [2020-12-02 21:39:01,259 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 21:39:01,259 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-02 21:39:01,260 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949634929] [2020-12-02 21:39:01,266 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-02 21:39:01,266 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 21:39:01,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-02 21:39:01,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-02 21:39:01,285 INFO L87 Difference]: Start difference. First operand 41 states. Second operand 2 states. [2020-12-02 21:39:01,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 21:39:01,308 INFO L93 Difference]: Finished difference Result 79 states and 106 transitions. [2020-12-02 21:39:01,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-02 21:39:01,310 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-12-02 21:39:01,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 21:39:01,320 INFO L225 Difference]: With dead ends: 79 [2020-12-02 21:39:01,321 INFO L226 Difference]: Without dead ends: 37 [2020-12-02 21:39:01,325 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 [2020-12-02 21:39:01,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-12-02 21:39:01,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2020-12-02 21:39:01,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-12-02 21:39:01,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2020-12-02 21:39:01,366 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 8 [2020-12-02 21:39:01,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 21:39:01,367 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2020-12-02 21:39:01,367 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-02 21:39:01,368 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2020-12-02 21:39:01,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-02 21:39:01,368 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 21:39:01,369 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 21:39:01,369 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-02 21:39:01,370 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]=== [2020-12-02 21:39:01,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 21:39:01,371 INFO L82 PathProgramCache]: Analyzing trace with hash 176704684, now seen corresponding path program 1 times [2020-12-02 21:39:01,371 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 21:39:01,372 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348184805] [2020-12-02 21:39:01,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 21:39:01,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 21:39:01,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 21:39:01,468 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348184805] [2020-12-02 21:39:01,469 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 21:39:01,469 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-02 21:39:01,469 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047970075] [2020-12-02 21:39:01,471 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-02 21:39:01,471 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 21:39:01,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-02 21:39:01,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-02 21:39:01,473 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand 4 states. [2020-12-02 21:39:01,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 21:39:01,573 INFO L93 Difference]: Finished difference Result 61 states and 69 transitions. [2020-12-02 21:39:01,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-02 21:39:01,573 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-12-02 21:39:01,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 21:39:01,575 INFO L225 Difference]: With dead ends: 61 [2020-12-02 21:39:01,575 INFO L226 Difference]: Without dead ends: 59 [2020-12-02 21:39:01,576 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-02 21:39:01,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-12-02 21:39:01,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 35. [2020-12-02 21:39:01,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-12-02 21:39:01,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2020-12-02 21:39:01,585 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 8 [2020-12-02 21:39:01,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 21:39:01,586 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2020-12-02 21:39:01,586 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-02 21:39:01,586 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2020-12-02 21:39:01,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-02 21:39:01,587 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 21:39:01,587 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 21:39:01,587 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-02 21:39:01,588 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]=== [2020-12-02 21:39:01,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 21:39:01,589 INFO L82 PathProgramCache]: Analyzing trace with hash -1986071569, now seen corresponding path program 1 times [2020-12-02 21:39:01,589 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 21:39:01,589 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47819436] [2020-12-02 21:39:01,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 21:39:01,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 21:39:01,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 21:39:01,639 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47819436] [2020-12-02 21:39:01,639 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 21:39:01,640 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-02 21:39:01,640 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863693177] [2020-12-02 21:39:01,640 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-02 21:39:01,641 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 21:39:01,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-02 21:39:01,644 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-02 21:39:01,644 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand 4 states. [2020-12-02 21:39:01,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 21:39:01,677 INFO L93 Difference]: Finished difference Result 56 states and 63 transitions. [2020-12-02 21:39:01,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-02 21:39:01,678 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-12-02 21:39:01,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 21:39:01,680 INFO L225 Difference]: With dead ends: 56 [2020-12-02 21:39:01,681 INFO L226 Difference]: Without dead ends: 37 [2020-12-02 21:39:01,683 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-02 21:39:01,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-12-02 21:39:01,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2020-12-02 21:39:01,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-12-02 21:39:01,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2020-12-02 21:39:01,699 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 10 [2020-12-02 21:39:01,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 21:39:01,700 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2020-12-02 21:39:01,700 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-02 21:39:01,701 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2020-12-02 21:39:01,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-02 21:39:01,701 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 21:39:01,705 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 21:39:01,705 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-02 21:39:01,706 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]=== [2020-12-02 21:39:01,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 21:39:01,706 INFO L82 PathProgramCache]: Analyzing trace with hash -1985334737, now seen corresponding path program 1 times [2020-12-02 21:39:01,707 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 21:39:01,707 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952983045] [2020-12-02 21:39:01,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 21:39:01,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 21:39:01,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 21:39:01,791 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952983045] [2020-12-02 21:39:01,791 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 21:39:01,792 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-02 21:39:01,792 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643331931] [2020-12-02 21:39:01,792 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-02 21:39:01,792 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 21:39:01,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-02 21:39:01,793 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-02 21:39:01,794 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand 4 states. [2020-12-02 21:39:01,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 21:39:01,868 INFO L93 Difference]: Finished difference Result 56 states and 62 transitions. [2020-12-02 21:39:01,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-02 21:39:01,869 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-12-02 21:39:01,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 21:39:01,870 INFO L225 Difference]: With dead ends: 56 [2020-12-02 21:39:01,870 INFO L226 Difference]: Without dead ends: 54 [2020-12-02 21:39:01,871 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-02 21:39:01,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-12-02 21:39:01,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 35. [2020-12-02 21:39:01,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-12-02 21:39:01,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2020-12-02 21:39:01,878 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 10 [2020-12-02 21:39:01,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 21:39:01,879 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2020-12-02 21:39:01,879 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-02 21:39:01,879 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2020-12-02 21:39:01,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-02 21:39:01,880 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 21:39:01,880 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 21:39:01,880 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-02 21:39:01,880 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]=== [2020-12-02 21:39:01,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 21:39:01,881 INFO L82 PathProgramCache]: Analyzing trace with hash -941046702, now seen corresponding path program 1 times [2020-12-02 21:39:01,881 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 21:39:01,881 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804562059] [2020-12-02 21:39:01,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 21:39:01,901 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-02 21:39:01,901 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1141187855] [2020-12-02 21:39:01,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-12-02 21:39:01,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 21:39:01,982 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 17 conjunts are in the unsatisfiable core [2020-12-02 21:39:01,990 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-02 21:39:02,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 21:39:02,137 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804562059] [2020-12-02 21:39:02,137 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-02 21:39:02,138 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1141187855] [2020-12-02 21:39:02,140 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 21:39:02,141 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-02 21:39:02,144 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540070532] [2020-12-02 21:39:02,146 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-02 21:39:02,146 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 21:39:02,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-02 21:39:02,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-02 21:39:02,148 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand 6 states. [2020-12-02 21:39:02,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 21:39:02,501 INFO L93 Difference]: Finished difference Result 81 states and 93 transitions. [2020-12-02 21:39:02,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-02 21:39:02,502 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2020-12-02 21:39:02,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 21:39:02,507 INFO L225 Difference]: With dead ends: 81 [2020-12-02 21:39:02,507 INFO L226 Difference]: Without dead ends: 58 [2020-12-02 21:39:02,510 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2020-12-02 21:39:02,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-12-02 21:39:02,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 49. [2020-12-02 21:39:02,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-12-02 21:39:02,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 56 transitions. [2020-12-02 21:39:02,539 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 56 transitions. Word has length 12 [2020-12-02 21:39:02,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 21:39:02,539 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 56 transitions. [2020-12-02 21:39:02,540 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-02 21:39:02,540 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 56 transitions. [2020-12-02 21:39:02,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-02 21:39:02,541 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 21:39:02,541 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 21:39:02,755 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-02 21:39:02,756 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]=== [2020-12-02 21:39:02,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 21:39:02,757 INFO L82 PathProgramCache]: Analyzing trace with hash 1803611644, now seen corresponding path program 1 times [2020-12-02 21:39:02,757 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 21:39:02,758 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129442366] [2020-12-02 21:39:02,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 21:39:02,785 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-02 21:39:02,786 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1544621138] [2020-12-02 21:39:02,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-12-02 21:39:02,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 21:39:02,866 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 22 conjunts are in the unsatisfiable core [2020-12-02 21:39:02,868 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-02 21:39:02,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 21:39:02,976 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129442366] [2020-12-02 21:39:02,976 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-02 21:39:02,976 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1544621138] [2020-12-02 21:39:02,977 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 21:39:02,977 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-02 21:39:02,977 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407866069] [2020-12-02 21:39:02,978 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-02 21:39:02,978 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 21:39:02,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-02 21:39:02,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-12-02 21:39:02,979 INFO L87 Difference]: Start difference. First operand 49 states and 56 transitions. Second operand 7 states. [2020-12-02 21:39:03,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 21:39:03,251 INFO L93 Difference]: Finished difference Result 53 states and 58 transitions. [2020-12-02 21:39:03,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-02 21:39:03,252 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-12-02 21:39:03,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 21:39:03,253 INFO L225 Difference]: With dead ends: 53 [2020-12-02 21:39:03,253 INFO L226 Difference]: Without dead ends: 41 [2020-12-02 21:39:03,254 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2020-12-02 21:39:03,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-12-02 21:39:03,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2020-12-02 21:39:03,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-12-02 21:39:03,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions. [2020-12-02 21:39:03,260 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 16 [2020-12-02 21:39:03,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 21:39:03,261 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 45 transitions. [2020-12-02 21:39:03,261 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-02 21:39:03,261 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2020-12-02 21:39:03,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-02 21:39:03,262 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 21:39:03,262 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 21:39:03,474 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-02 21:39:03,475 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 21:39:03,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 21:39:03,476 INFO L82 PathProgramCache]: Analyzing trace with hash -1571159167, now seen corresponding path program 1 times [2020-12-02 21:39:03,477 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 21:39:03,477 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614623194] [2020-12-02 21:39:03,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 21:39:03,490 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-02 21:39:03,491 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2093716305] [2020-12-02 21:39:03,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-12-02 21:39:03,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 21:39:03,549 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-02 21:39:03,550 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-02 21:39:03,604 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 21:39:03,604 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614623194] [2020-12-02 21:39:03,605 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-02 21:39:03,605 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2093716305] [2020-12-02 21:39:03,605 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-02 21:39:03,605 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-12-02 21:39:03,606 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968434708] [2020-12-02 21:39:03,606 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-02 21:39:03,606 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 21:39:03,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-02 21:39:03,607 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-02 21:39:03,607 INFO L87 Difference]: Start difference. First operand 41 states and 45 transitions. Second operand 5 states. [2020-12-02 21:39:03,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 21:39:03,637 INFO L93 Difference]: Finished difference Result 62 states and 69 transitions. [2020-12-02 21:39:03,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-02 21:39:03,638 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-12-02 21:39:03,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 21:39:03,639 INFO L225 Difference]: With dead ends: 62 [2020-12-02 21:39:03,639 INFO L226 Difference]: Without dead ends: 43 [2020-12-02 21:39:03,640 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-02 21:39:03,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-12-02 21:39:03,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2020-12-02 21:39:03,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-12-02 21:39:03,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 47 transitions. [2020-12-02 21:39:03,646 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 47 transitions. Word has length 18 [2020-12-02 21:39:03,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 21:39:03,646 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 47 transitions. [2020-12-02 21:39:03,647 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-02 21:39:03,647 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 47 transitions. [2020-12-02 21:39:03,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-12-02 21:39:03,647 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 21:39:03,648 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 21:39:03,861 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-02 21:39:03,862 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 21:39:03,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 21:39:03,863 INFO L82 PathProgramCache]: Analyzing trace with hash -1642186908, now seen corresponding path program 1 times [2020-12-02 21:39:03,864 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 21:39:03,864 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221422293] [2020-12-02 21:39:03,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 21:39:03,882 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-02 21:39:03,883 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [413008521] [2020-12-02 21:39:03,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-12-02 21:39:04,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 21:39:04,056 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 26 conjunts are in the unsatisfiable core [2020-12-02 21:39:04,058 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-02 21:39:04,218 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 21:39:04,219 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221422293] [2020-12-02 21:39:04,219 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-02 21:39:04,219 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [413008521] [2020-12-02 21:39:04,220 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-02 21:39:04,220 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-12-02 21:39:04,220 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868658980] [2020-12-02 21:39:04,221 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-02 21:39:04,221 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 21:39:04,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-02 21:39:04,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-12-02 21:39:04,222 INFO L87 Difference]: Start difference. First operand 43 states and 47 transitions. Second operand 8 states. [2020-12-02 21:39:04,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 21:39:04,724 INFO L93 Difference]: Finished difference Result 83 states and 91 transitions. [2020-12-02 21:39:04,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-02 21:39:04,725 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 20 [2020-12-02 21:39:04,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 21:39:04,727 INFO L225 Difference]: With dead ends: 83 [2020-12-02 21:39:04,728 INFO L226 Difference]: Without dead ends: 71 [2020-12-02 21:39:04,729 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2020-12-02 21:39:04,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-12-02 21:39:04,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 55. [2020-12-02 21:39:04,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-12-02 21:39:04,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 62 transitions. [2020-12-02 21:39:04,753 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 62 transitions. Word has length 20 [2020-12-02 21:39:04,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 21:39:04,754 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 62 transitions. [2020-12-02 21:39:04,754 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-02 21:39:04,754 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 62 transitions. [2020-12-02 21:39:04,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-12-02 21:39:04,755 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 21:39:04,755 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 21:39:04,961 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-02 21:39:04,962 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 21:39:04,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 21:39:04,964 INFO L82 PathProgramCache]: Analyzing trace with hash 1958905870, now seen corresponding path program 1 times [2020-12-02 21:39:04,964 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 21:39:04,965 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658481980] [2020-12-02 21:39:04,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 21:39:04,985 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-02 21:39:04,985 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [250482138] [2020-12-02 21:39:04,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-02 21:39:05,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 21:39:05,076 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 22 conjunts are in the unsatisfiable core [2020-12-02 21:39:05,079 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-02 21:39:05,249 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 21:39:05,249 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658481980] [2020-12-02 21:39:05,249 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-02 21:39:05,250 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [250482138] [2020-12-02 21:39:05,250 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-02 21:39:05,250 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-12-02 21:39:05,250 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379370100] [2020-12-02 21:39:05,251 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-02 21:39:05,251 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 21:39:05,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-02 21:39:05,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-12-02 21:39:05,253 INFO L87 Difference]: Start difference. First operand 55 states and 62 transitions. Second operand 7 states. [2020-12-02 21:39:05,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 21:39:05,590 INFO L93 Difference]: Finished difference Result 74 states and 83 transitions. [2020-12-02 21:39:05,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-02 21:39:05,591 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 24 [2020-12-02 21:39:05,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 21:39:05,592 INFO L225 Difference]: With dead ends: 74 [2020-12-02 21:39:05,592 INFO L226 Difference]: Without dead ends: 70 [2020-12-02 21:39:05,592 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2020-12-02 21:39:05,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-12-02 21:39:05,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 64. [2020-12-02 21:39:05,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-12-02 21:39:05,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 74 transitions. [2020-12-02 21:39:05,601 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 74 transitions. Word has length 24 [2020-12-02 21:39:05,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 21:39:05,602 INFO L481 AbstractCegarLoop]: Abstraction has 64 states and 74 transitions. [2020-12-02 21:39:05,602 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-02 21:39:05,602 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 74 transitions. [2020-12-02 21:39:05,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-12-02 21:39:05,603 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 21:39:05,603 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 21:39:05,817 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-02 21:39:05,818 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 21:39:05,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 21:39:05,819 INFO L82 PathProgramCache]: Analyzing trace with hash 2018616451, now seen corresponding path program 1 times [2020-12-02 21:39:05,819 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 21:39:05,820 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161919792] [2020-12-02 21:39:05,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 21:39:05,833 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-02 21:39:05,833 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1387292937] [2020-12-02 21:39:05,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-02 21:39:05,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 21:39:05,891 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-02 21:39:05,892 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-02 21:39:05,970 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 21:39:05,970 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161919792] [2020-12-02 21:39:05,971 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-02 21:39:05,971 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1387292937] [2020-12-02 21:39:05,971 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-02 21:39:05,971 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-12-02 21:39:05,972 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994878909] [2020-12-02 21:39:05,972 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-02 21:39:05,972 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 21:39:05,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-02 21:39:05,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-02 21:39:05,973 INFO L87 Difference]: Start difference. First operand 64 states and 74 transitions. Second operand 6 states. [2020-12-02 21:39:05,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 21:39:05,997 INFO L93 Difference]: Finished difference Result 71 states and 80 transitions. [2020-12-02 21:39:05,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-02 21:39:05,997 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 27 [2020-12-02 21:39:05,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 21:39:05,998 INFO L225 Difference]: With dead ends: 71 [2020-12-02 21:39:05,998 INFO L226 Difference]: Without dead ends: 65 [2020-12-02 21:39:05,999 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-02 21:39:05,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-12-02 21:39:06,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 64. [2020-12-02 21:39:06,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-12-02 21:39:06,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 73 transitions. [2020-12-02 21:39:06,006 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 73 transitions. Word has length 27 [2020-12-02 21:39:06,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 21:39:06,007 INFO L481 AbstractCegarLoop]: Abstraction has 64 states and 73 transitions. [2020-12-02 21:39:06,007 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-02 21:39:06,007 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 73 transitions. [2020-12-02 21:39:06,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-12-02 21:39:06,008 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 21:39:06,008 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 21:39:06,222 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-02 21:39:06,223 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 21:39:06,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 21:39:06,224 INFO L82 PathProgramCache]: Analyzing trace with hash 1875627766, now seen corresponding path program 1 times [2020-12-02 21:39:06,224 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 21:39:06,225 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827441812] [2020-12-02 21:39:06,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 21:39:06,237 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-02 21:39:06,237 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1768451997] [2020-12-02 21:39:06,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-02 21:39:06,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 21:39:06,302 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-02 21:39:06,304 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-02 21:39:06,353 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 21:39:06,354 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827441812] [2020-12-02 21:39:06,354 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-02 21:39:06,355 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1768451997] [2020-12-02 21:39:06,355 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-02 21:39:06,355 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-12-02 21:39:06,355 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381587041] [2020-12-02 21:39:06,356 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-02 21:39:06,356 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 21:39:06,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-02 21:39:06,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-02 21:39:06,357 INFO L87 Difference]: Start difference. First operand 64 states and 73 transitions. Second operand 6 states. [2020-12-02 21:39:06,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 21:39:06,395 INFO L93 Difference]: Finished difference Result 94 states and 110 transitions. [2020-12-02 21:39:06,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-02 21:39:06,395 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 28 [2020-12-02 21:39:06,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 21:39:06,396 INFO L225 Difference]: With dead ends: 94 [2020-12-02 21:39:06,396 INFO L226 Difference]: Without dead ends: 66 [2020-12-02 21:39:06,397 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-02 21:39:06,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-12-02 21:39:06,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2020-12-02 21:39:06,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-12-02 21:39:06,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 75 transitions. [2020-12-02 21:39:06,404 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 75 transitions. Word has length 28 [2020-12-02 21:39:06,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 21:39:06,404 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 75 transitions. [2020-12-02 21:39:06,404 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-02 21:39:06,405 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 75 transitions. [2020-12-02 21:39:06,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-12-02 21:39:06,405 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 21:39:06,406 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1] [2020-12-02 21:39:06,617 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-02 21:39:06,618 INFO L429 AbstractCegarLoop]: === Iteration 12 === [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]=== [2020-12-02 21:39:06,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 21:39:06,619 INFO L82 PathProgramCache]: Analyzing trace with hash -1711245194, now seen corresponding path program 2 times [2020-12-02 21:39:06,620 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 21:39:06,620 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380733351] [2020-12-02 21:39:06,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 21:39:06,632 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-02 21:39:06,632 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2094988253] [2020-12-02 21:39:06,632 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-02 21:39:07,072 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-02 21:39:07,072 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-02 21:39:07,074 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 30 conjunts are in the unsatisfiable core [2020-12-02 21:39:07,076 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-02 21:39:07,306 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 21:39:07,306 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380733351] [2020-12-02 21:39:07,306 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-02 21:39:07,307 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2094988253] [2020-12-02 21:39:07,307 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-02 21:39:07,307 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-12-02 21:39:07,307 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239233301] [2020-12-02 21:39:07,308 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-02 21:39:07,308 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 21:39:07,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-02 21:39:07,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-12-02 21:39:07,309 INFO L87 Difference]: Start difference. First operand 66 states and 75 transitions. Second operand 11 states. [2020-12-02 21:39:08,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 21:39:08,237 INFO L93 Difference]: Finished difference Result 103 states and 117 transitions. [2020-12-02 21:39:08,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-02 21:39:08,240 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-12-02 21:39:08,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 21:39:08,241 INFO L225 Difference]: With dead ends: 103 [2020-12-02 21:39:08,241 INFO L226 Difference]: Without dead ends: 93 [2020-12-02 21:39:08,241 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=88, Invalid=254, Unknown=0, NotChecked=0, Total=342 [2020-12-02 21:39:08,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-12-02 21:39:08,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 74. [2020-12-02 21:39:08,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-12-02 21:39:08,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 85 transitions. [2020-12-02 21:39:08,249 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 85 transitions. Word has length 28 [2020-12-02 21:39:08,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 21:39:08,249 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 85 transitions. [2020-12-02 21:39:08,249 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-02 21:39:08,249 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 85 transitions. [2020-12-02 21:39:08,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-12-02 21:39:08,250 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 21:39:08,250 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 21:39:08,459 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2020-12-02 21:39:08,460 INFO L429 AbstractCegarLoop]: === Iteration 13 === [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]=== [2020-12-02 21:39:08,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 21:39:08,461 INFO L82 PathProgramCache]: Analyzing trace with hash 1339843922, now seen corresponding path program 1 times [2020-12-02 21:39:08,462 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 21:39:08,462 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776368969] [2020-12-02 21:39:08,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 21:39:08,474 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-02 21:39:08,474 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [603469876] [2020-12-02 21:39:08,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-02 21:39:12,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 21:39:12,721 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 39 conjunts are in the unsatisfiable core [2020-12-02 21:39:12,724 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-02 21:39:13,143 INFO L757 QuantifierPusher]: Run 10 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-02 21:39:13,188 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-02 21:39:13,200 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-02 21:39:13,365 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-02 21:39:13,607 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-02 21:39:14,069 INFO L757 QuantifierPusher]: Run 10 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-02 21:39:15,700 INFO L757 QuantifierPusher]: Run 20 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-02 21:39:17,392 INFO L757 QuantifierPusher]: Run 30 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-02 21:39:19,106 INFO L757 QuantifierPusher]: Run 40 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-02 21:39:21,132 INFO L757 QuantifierPusher]: Run 50 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-02 21:39:22,330 INFO L757 QuantifierPusher]: Run 60 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-02 21:39:23,327 INFO L757 QuantifierPusher]: Run 70 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-02 21:39:24,262 INFO L757 QuantifierPusher]: Run 80 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-02 21:39:25,510 INFO L757 QuantifierPusher]: Run 90 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-02 21:39:26,760 INFO L757 QuantifierPusher]: Run 100 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-02 21:39:27,956 INFO L757 QuantifierPusher]: Run 110 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-02 21:39:29,089 INFO L757 QuantifierPusher]: Run 120 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-02 21:39:29,929 INFO L757 QuantifierPusher]: Run 130 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-02 21:39:33,371 INFO L757 QuantifierPusher]: Run 10 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-02 21:39:37,627 INFO L757 QuantifierPusher]: Run 20 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-02 21:39:42,319 INFO L757 QuantifierPusher]: Run 30 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-02 21:39:49,057 INFO L757 QuantifierPusher]: Run 40 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-02 21:40:00,628 INFO L757 QuantifierPusher]: Run 50 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-02 21:40:18,804 INFO L757 QuantifierPusher]: Run 60 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-02 21:40:21,609 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776368969] [2020-12-02 21:40:21,609 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-02 21:40:21,609 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [603469876] [2020-12-02 21:40:21,610 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: variable got div captured [2020-12-02 21:40:21,610 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2020-12-02 21:40:21,610 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2020-12-02 21:40:21,610 ERROR L205 FreeRefinementEngine]: Strategy CAMEL failed to provide any proof altough trace is infeasible [2020-12-02 21:40:21,610 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-02 21:40:21,818 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-02 21:40:21,836 WARN L254 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-12-02 21:40:21,837 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 09:40:21 BoogieIcfgContainer [2020-12-02 21:40:21,837 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-02 21:40:21,837 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-02 21:40:21,837 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-02 21:40:21,838 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-02 21:40:21,838 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 09:39:00" (3/4) ... [2020-12-02 21:40:21,841 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-02 21:40:21,841 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-02 21:40:21,843 INFO L168 Benchmark]: Toolchain (without parser) took 81897.61 ms. Allocated memory was 52.4 MB in the beginning and 251.7 MB in the end (delta: 199.2 MB). Free memory was 29.1 MB in the beginning and 229.4 MB in the end (delta: -200.3 MB). Peak memory consumption was 503.6 kB. Max. memory is 16.1 GB. [2020-12-02 21:40:21,844 INFO L168 Benchmark]: CDTParser took 0.56 ms. Allocated memory is still 52.4 MB. Free memory was 34.3 MB in the beginning and 34.2 MB in the end (delta: 73.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-02 21:40:21,844 INFO L168 Benchmark]: CACSL2BoogieTranslator took 349.09 ms. Allocated memory is still 52.4 MB. Free memory was 29.0 MB in the beginning and 32.1 MB in the end (delta: -3.1 MB). Peak memory consumption was 7.7 MB. Max. memory is 16.1 GB. [2020-12-02 21:40:21,845 INFO L168 Benchmark]: Boogie Procedure Inliner took 84.95 ms. Allocated memory is still 52.4 MB. Free memory was 32.1 MB in the beginning and 30.5 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-02 21:40:21,845 INFO L168 Benchmark]: Boogie Preprocessor took 57.84 ms. Allocated memory is still 52.4 MB. Free memory was 30.5 MB in the beginning and 29.3 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-02 21:40:21,846 INFO L168 Benchmark]: RCFGBuilder took 488.69 ms. Allocated memory was 52.4 MB in the beginning and 67.1 MB in the end (delta: 14.7 MB). Free memory was 29.3 MB in the beginning and 40.3 MB in the end (delta: -11.1 MB). Peak memory consumption was 12.2 MB. Max. memory is 16.1 GB. [2020-12-02 21:40:21,847 INFO L168 Benchmark]: TraceAbstraction took 80900.70 ms. Allocated memory was 67.1 MB in the beginning and 251.7 MB in the end (delta: 184.5 MB). Free memory was 39.9 MB in the beginning and 230.2 MB in the end (delta: -190.3 MB). Peak memory consumption was 144.2 MB. Max. memory is 16.1 GB. [2020-12-02 21:40:21,847 INFO L168 Benchmark]: Witness Printer took 4.17 ms. Allocated memory is still 251.7 MB. Free memory was 230.2 MB in the beginning and 229.4 MB in the end (delta: 803.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-02 21:40:21,850 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.56 ms. Allocated memory is still 52.4 MB. Free memory was 34.3 MB in the beginning and 34.2 MB in the end (delta: 73.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 349.09 ms. Allocated memory is still 52.4 MB. Free memory was 29.0 MB in the beginning and 32.1 MB in the end (delta: -3.1 MB). Peak memory consumption was 7.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 84.95 ms. Allocated memory is still 52.4 MB. Free memory was 32.1 MB in the beginning and 30.5 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 57.84 ms. Allocated memory is still 52.4 MB. Free memory was 30.5 MB in the beginning and 29.3 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 488.69 ms. Allocated memory was 52.4 MB in the beginning and 67.1 MB in the end (delta: 14.7 MB). Free memory was 29.3 MB in the beginning and 40.3 MB in the end (delta: -11.1 MB). Peak memory consumption was 12.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 80900.70 ms. Allocated memory was 67.1 MB in the beginning and 251.7 MB in the end (delta: 184.5 MB). Free memory was 39.9 MB in the beginning and 230.2 MB in the end (delta: -190.3 MB). Peak memory consumption was 144.2 MB. Max. memory is 16.1 GB. * Witness Printer took 4.17 ms. Allocated memory is still 251.7 MB. Free memory was 230.2 MB in the beginning and 229.4 MB in the end (delta: 803.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 17]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L22] int counter = 0; [L24] unsigned int A, B; [L25] unsigned int r, d, p, q; [L26] A = __VERIFIER_nondet_uint() [L27] B = __VERIFIER_nondet_uint() [L12] COND FALSE !(!cond) [L30] r = A [L31] d = B [L32] p = 1 [L33] q = 0 [L35] EXPR counter++ [L35] COND TRUE counter++<10 [L15] COND FALSE !(!(cond)) [L15] COND FALSE !(!(cond)) [L15] COND FALSE !(!(cond)) [L39] COND FALSE !(!(r >= d)) [L41] d = 2 * d [L42] p = 2 * p [L35] EXPR counter++ [L35] COND TRUE counter++<10 [L15] COND FALSE !(!(cond)) [L15] COND FALSE !(!(cond)) [L15] COND FALSE !(!(cond)) [L39] COND TRUE !(r >= d) [L45] EXPR counter++ [L45] COND TRUE counter++<10 [L15] COND FALSE !(!(cond)) [L15] COND FALSE !(!(cond)) [L49] COND FALSE !(!(p != 1)) [L51] d = d / 2 [L52] p = p / 2 [L53] COND TRUE r >= d [L54] r = r - d [L55] q = q + p [L45] EXPR counter++ [L45] COND TRUE counter++<10 [L15] COND TRUE !(cond) [L17] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 41 locations, 7 error locations. Started 1 CEGAR loops. VerificationResult: UNKNOWN, OverallTime: 80.7s, OverallIterations: 13, TraceHistogramMax: 3, AutomataDifference: 2.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 394 SDtfs, 783 SDslu, 796 SDs, 0 SdLazy, 633 SolverSat, 126 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 211 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 1.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=74occurred in iteration=12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 12 MinimizatonAttempts, 94 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 209 NumberOfCodeBlocks, 209 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 197 ConstructedInterpolants, 0 QuantifiedInterpolants, 30603 SizeOfPredicates, 44 NumberOfNonLiveVariables, 809 ConjunctsInSsa, 136 ConjunctsInUnsatCore, 12 InterpolantComputations, 6 PerfectInterpolantSequences, 0/59 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 0.2.0-3e5ce66 [2020-12-02 21:40:24,310 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-02 21:40:24,312 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-02 21:40:24,366 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-02 21:40:24,366 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-02 21:40:24,372 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-02 21:40:24,374 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-02 21:40:24,380 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-02 21:40:24,383 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-02 21:40:24,389 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-02 21:40:24,391 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-02 21:40:24,395 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-02 21:40:24,396 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-02 21:40:24,398 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-02 21:40:24,400 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-02 21:40:24,401 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-02 21:40:24,402 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-02 21:40:24,405 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-02 21:40:24,408 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-02 21:40:24,414 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-02 21:40:24,417 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-02 21:40:24,418 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-02 21:40:24,419 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-02 21:40:24,420 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-02 21:40:24,423 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-02 21:40:24,423 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-02 21:40:24,423 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-02 21:40:24,424 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-02 21:40:24,425 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-02 21:40:24,426 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-02 21:40:24,426 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-02 21:40:24,427 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-02 21:40:24,427 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-02 21:40:24,428 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-02 21:40:24,429 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-02 21:40:24,429 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-02 21:40:24,430 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-02 21:40:24,430 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-02 21:40:24,431 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-02 21:40:24,431 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-02 21:40:24,432 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-02 21:40:24,435 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-12-02 21:40:24,466 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-02 21:40:24,473 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-02 21:40:24,476 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-02 21:40:24,477 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-02 21:40:24,477 INFO L138 SettingsManager]: * Use SBE=true [2020-12-02 21:40:24,477 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-02 21:40:24,477 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-02 21:40:24,478 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-02 21:40:24,478 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-02 21:40:24,478 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-02 21:40:24,479 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-02 21:40:24,480 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-02 21:40:24,480 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-12-02 21:40:24,480 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-12-02 21:40:24,481 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-02 21:40:24,481 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-02 21:40:24,481 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-02 21:40:24,481 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-02 21:40:24,482 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-02 21:40:24,482 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-02 21:40:24,482 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-02 21:40:24,483 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-02 21:40:24,483 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-02 21:40:24,483 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-02 21:40:24,483 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-02 21:40:24,484 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-12-02 21:40:24,484 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2020-12-02 21:40:24,484 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-02 21:40:24,485 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-02 21:40:24,485 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-02 21:40:24,485 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:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 922bb6facca523b8e3d5998565ece8e6b63ec45d [2020-12-02 21:40:24,886 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-02 21:40:24,912 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-02 21:40:24,915 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-02 21:40:24,917 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-02 21:40:24,923 INFO L275 PluginConnector]: CDTParser initialized [2020-12-02 21:40:24,924 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/hard-u_unwindbound10.c [2020-12-02 21:40:25,007 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fa0aa0e25/58466ea47c674b17b46df82c2f03e070/FLAG9575bb951 [2020-12-02 21:40:25,494 INFO L306 CDTParser]: Found 1 translation units. [2020-12-02 21:40:25,494 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/hard-u_unwindbound10.c [2020-12-02 21:40:25,502 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fa0aa0e25/58466ea47c674b17b46df82c2f03e070/FLAG9575bb951 [2020-12-02 21:40:25,887 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fa0aa0e25/58466ea47c674b17b46df82c2f03e070 [2020-12-02 21:40:25,891 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-02 21:40:25,894 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-02 21:40:25,898 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-02 21:40:25,898 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-02 21:40:25,903 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-02 21:40:25,905 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 09:40:25" (1/1) ... [2020-12-02 21:40:25,916 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37679c16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:40:25, skipping insertion in model container [2020-12-02 21:40:25,917 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 09:40:25" (1/1) ... [2020-12-02 21:40:25,926 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-02 21:40:25,948 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-02 21:40:26,161 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/hard-u_unwindbound10.c[537,550] [2020-12-02 21:40:26,180 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-02 21:40:26,193 INFO L203 MainTranslator]: Completed pre-run [2020-12-02 21:40:26,208 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/hard-u_unwindbound10.c[537,550] [2020-12-02 21:40:26,217 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-02 21:40:26,236 INFO L208 MainTranslator]: Completed translation [2020-12-02 21:40:26,237 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:40:26 WrapperNode [2020-12-02 21:40:26,237 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-02 21:40:26,239 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-02 21:40:26,239 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-02 21:40:26,239 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-02 21:40:26,247 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:40:26" (1/1) ... [2020-12-02 21:40:26,257 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:40:26" (1/1) ... [2020-12-02 21:40:26,280 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-02 21:40:26,282 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-02 21:40:26,282 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-02 21:40:26,282 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-02 21:40:26,291 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:40:26" (1/1) ... [2020-12-02 21:40:26,292 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:40:26" (1/1) ... [2020-12-02 21:40:26,294 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:40:26" (1/1) ... [2020-12-02 21:40:26,295 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:40:26" (1/1) ... [2020-12-02 21:40:26,302 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:40:26" (1/1) ... [2020-12-02 21:40:26,307 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:40:26" (1/1) ... [2020-12-02 21:40:26,309 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:40:26" (1/1) ... [2020-12-02 21:40:26,312 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-02 21:40:26,313 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-02 21:40:26,313 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-02 21:40:26,314 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-02 21:40:26,314 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:40:26" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-12-02 21:40:26,399 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-12-02 21:40:26,399 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-02 21:40:26,399 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-02 21:40:26,400 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-02 21:40:26,841 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-02 21:40:26,842 INFO L298 CfgBuilder]: Removed 22 assume(true) statements. [2020-12-02 21:40:26,847 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 09:40:26 BoogieIcfgContainer [2020-12-02 21:40:26,848 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-02 21:40:26,850 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-02 21:40:26,850 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-02 21:40:26,858 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-02 21:40:26,858 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 09:40:25" (1/3) ... [2020-12-02 21:40:26,859 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f093699 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 09:40:26, skipping insertion in model container [2020-12-02 21:40:26,859 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:40:26" (2/3) ... [2020-12-02 21:40:26,859 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f093699 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 09:40:26, skipping insertion in model container [2020-12-02 21:40:26,860 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 09:40:26" (3/3) ... [2020-12-02 21:40:26,864 INFO L111 eAbstractionObserver]: Analyzing ICFG hard-u_unwindbound10.c [2020-12-02 21:40:26,884 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-02 21:40:26,888 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2020-12-02 21:40:26,900 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-12-02 21:40:26,945 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-02 21:40:26,945 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-02 21:40:26,945 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-02 21:40:26,946 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-02 21:40:26,946 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-02 21:40:26,946 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-02 21:40:26,946 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-02 21:40:26,946 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-02 21:40:26,966 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states. [2020-12-02 21:40:26,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-02 21:40:26,983 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 21:40:26,984 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 21:40:26,985 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]=== [2020-12-02 21:40:26,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 21:40:26,992 INFO L82 PathProgramCache]: Analyzing trace with hash 119446382, now seen corresponding path program 1 times [2020-12-02 21:40:27,006 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-02 21:40:27,007 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1534919627] [2020-12-02 21:40:27,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-12-02 21:40:27,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 21:40:27,168 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 1 conjunts are in the unsatisfiable core [2020-12-02 21:40:27,174 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-02 21:40:27,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 21:40:27,209 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-02 21:40:27,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 21:40:27,227 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1534919627] [2020-12-02 21:40:27,227 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-02 21:40:27,228 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-12-02 21:40:27,228 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673395654] [2020-12-02 21:40:27,245 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-02 21:40:27,246 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-02 21:40:27,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-02 21:40:27,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-02 21:40:27,264 INFO L87 Difference]: Start difference. First operand 41 states. Second operand 2 states. [2020-12-02 21:40:27,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 21:40:27,296 INFO L93 Difference]: Finished difference Result 79 states and 106 transitions. [2020-12-02 21:40:27,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-02 21:40:27,297 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-12-02 21:40:27,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 21:40:27,313 INFO L225 Difference]: With dead ends: 79 [2020-12-02 21:40:27,314 INFO L226 Difference]: Without dead ends: 37 [2020-12-02 21:40:27,318 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-02 21:40:27,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-12-02 21:40:27,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2020-12-02 21:40:27,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-12-02 21:40:27,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2020-12-02 21:40:27,363 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 8 [2020-12-02 21:40:27,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 21:40:27,364 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2020-12-02 21:40:27,364 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-02 21:40:27,364 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2020-12-02 21:40:27,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-02 21:40:27,365 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 21:40:27,366 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 21:40:27,572 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-12-02 21:40:27,574 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]=== [2020-12-02 21:40:27,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 21:40:27,576 INFO L82 PathProgramCache]: Analyzing trace with hash 176704684, now seen corresponding path program 1 times [2020-12-02 21:40:27,577 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-02 21:40:27,577 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1874757264] [2020-12-02 21:40:27,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-12-02 21:40:27,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 21:40:27,654 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-02 21:40:27,655 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-02 21:40:27,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 21:40:27,724 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-02 21:40:27,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 21:40:27,758 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1874757264] [2020-12-02 21:40:27,758 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-02 21:40:27,759 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2020-12-02 21:40:27,759 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128672241] [2020-12-02 21:40:27,760 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-02 21:40:27,761 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-02 21:40:27,762 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-02 21:40:27,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-02 21:40:27,763 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand 5 states. [2020-12-02 21:40:27,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 21:40:27,939 INFO L93 Difference]: Finished difference Result 61 states and 69 transitions. [2020-12-02 21:40:27,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-02 21:40:27,940 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2020-12-02 21:40:27,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 21:40:27,941 INFO L225 Difference]: With dead ends: 61 [2020-12-02 21:40:27,941 INFO L226 Difference]: Without dead ends: 59 [2020-12-02 21:40:27,942 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-02 21:40:27,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-12-02 21:40:27,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 35. [2020-12-02 21:40:27,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-12-02 21:40:27,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2020-12-02 21:40:27,951 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 8 [2020-12-02 21:40:27,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 21:40:27,952 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2020-12-02 21:40:27,952 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-02 21:40:27,952 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2020-12-02 21:40:27,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-02 21:40:27,953 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 21:40:27,953 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 21:40:28,166 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-12-02 21:40:28,168 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]=== [2020-12-02 21:40:28,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 21:40:28,169 INFO L82 PathProgramCache]: Analyzing trace with hash -1986071569, now seen corresponding path program 1 times [2020-12-02 21:40:28,170 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-02 21:40:28,171 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1058202142] [2020-12-02 21:40:28,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-12-02 21:40:28,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 21:40:28,215 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-02 21:40:28,216 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-02 21:40:28,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 21:40:28,239 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-02 21:40:28,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 21:40:28,261 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1058202142] [2020-12-02 21:40:28,261 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-02 21:40:28,261 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2020-12-02 21:40:28,261 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220129217] [2020-12-02 21:40:28,262 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-02 21:40:28,262 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-02 21:40:28,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-02 21:40:28,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-02 21:40:28,263 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand 6 states. [2020-12-02 21:40:28,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 21:40:28,308 INFO L93 Difference]: Finished difference Result 69 states and 78 transitions. [2020-12-02 21:40:28,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-02 21:40:28,308 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2020-12-02 21:40:28,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 21:40:28,310 INFO L225 Difference]: With dead ends: 69 [2020-12-02 21:40:28,310 INFO L226 Difference]: Without dead ends: 50 [2020-12-02 21:40:28,310 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-12-02 21:40:28,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-12-02 21:40:28,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 45. [2020-12-02 21:40:28,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-12-02 21:40:28,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 52 transitions. [2020-12-02 21:40:28,322 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 52 transitions. Word has length 10 [2020-12-02 21:40:28,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 21:40:28,322 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 52 transitions. [2020-12-02 21:40:28,322 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-02 21:40:28,322 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 52 transitions. [2020-12-02 21:40:28,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-02 21:40:28,323 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 21:40:28,323 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 21:40:28,537 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-12-02 21:40:28,538 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]=== [2020-12-02 21:40:28,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 21:40:28,540 INFO L82 PathProgramCache]: Analyzing trace with hash -1985334737, now seen corresponding path program 1 times [2020-12-02 21:40:28,540 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-02 21:40:28,540 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1889615485] [2020-12-02 21:40:28,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-12-02 21:40:28,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 21:40:28,586 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-02 21:40:28,588 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-02 21:40:28,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 21:40:28,619 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-02 21:40:28,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 21:40:28,639 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1889615485] [2020-12-02 21:40:28,639 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-02 21:40:28,639 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2020-12-02 21:40:28,640 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790143420] [2020-12-02 21:40:28,640 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-02 21:40:28,640 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-02 21:40:28,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-02 21:40:28,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-02 21:40:28,641 INFO L87 Difference]: Start difference. First operand 45 states and 52 transitions. Second operand 5 states. [2020-12-02 21:40:28,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 21:40:28,843 INFO L93 Difference]: Finished difference Result 64 states and 73 transitions. [2020-12-02 21:40:28,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-02 21:40:28,843 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-12-02 21:40:28,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 21:40:28,845 INFO L225 Difference]: With dead ends: 64 [2020-12-02 21:40:28,845 INFO L226 Difference]: Without dead ends: 62 [2020-12-02 21:40:28,846 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-02 21:40:28,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-12-02 21:40:28,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 43. [2020-12-02 21:40:28,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-12-02 21:40:28,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 49 transitions. [2020-12-02 21:40:28,865 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 49 transitions. Word has length 10 [2020-12-02 21:40:28,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 21:40:28,865 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 49 transitions. [2020-12-02 21:40:28,865 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-02 21:40:28,865 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 49 transitions. [2020-12-02 21:40:28,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-02 21:40:28,866 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 21:40:28,866 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 21:40:29,067 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-12-02 21:40:29,069 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]=== [2020-12-02 21:40:29,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 21:40:29,070 INFO L82 PathProgramCache]: Analyzing trace with hash -941046702, now seen corresponding path program 1 times [2020-12-02 21:40:29,071 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-02 21:40:29,071 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1161838904] [2020-12-02 21:40:29,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-12-02 21:40:29,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 21:40:29,146 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-02 21:40:29,147 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-02 21:40:29,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 21:40:29,186 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-02 21:40:29,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 21:40:29,302 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1161838904] [2020-12-02 21:40:29,302 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-02 21:40:29,303 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2020-12-02 21:40:29,303 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573434585] [2020-12-02 21:40:29,303 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-02 21:40:29,304 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-02 21:40:29,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-02 21:40:29,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-02 21:40:29,305 INFO L87 Difference]: Start difference. First operand 43 states and 49 transitions. Second operand 6 states. [2020-12-02 21:40:32,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 21:40:32,080 INFO L93 Difference]: Finished difference Result 106 states and 123 transitions. [2020-12-02 21:40:32,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-02 21:40:32,082 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2020-12-02 21:40:32,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 21:40:32,083 INFO L225 Difference]: With dead ends: 106 [2020-12-02 21:40:32,083 INFO L226 Difference]: Without dead ends: 83 [2020-12-02 21:40:32,085 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2020-12-02 21:40:32,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-12-02 21:40:32,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 63. [2020-12-02 21:40:32,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-12-02 21:40:32,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 74 transitions. [2020-12-02 21:40:32,100 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 74 transitions. Word has length 12 [2020-12-02 21:40:32,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 21:40:32,100 INFO L481 AbstractCegarLoop]: Abstraction has 63 states and 74 transitions. [2020-12-02 21:40:32,100 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-02 21:40:32,101 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 74 transitions. [2020-12-02 21:40:32,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-02 21:40:32,101 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 21:40:32,102 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 21:40:32,315 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2020-12-02 21:40:32,316 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]=== [2020-12-02 21:40:32,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 21:40:32,317 INFO L82 PathProgramCache]: Analyzing trace with hash 1803611644, now seen corresponding path program 1 times [2020-12-02 21:40:32,318 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-02 21:40:32,318 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [824235286] [2020-12-02 21:40:32,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2020-12-02 21:40:32,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 21:40:32,391 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-02 21:40:32,393 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-02 21:40:32,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 21:40:32,438 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-02 21:40:32,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 21:40:32,471 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [824235286] [2020-12-02 21:40:32,471 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-02 21:40:32,472 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 2] imperfect sequences [] total 5 [2020-12-02 21:40:32,472 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071920186] [2020-12-02 21:40:32,472 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-02 21:40:32,473 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-02 21:40:32,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-02 21:40:32,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-02 21:40:32,474 INFO L87 Difference]: Start difference. First operand 63 states and 74 transitions. Second operand 5 states. [2020-12-02 21:40:32,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 21:40:32,476 INFO L93 Difference]: Finished difference Result 63 states and 74 transitions. [2020-12-02 21:40:32,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-02 21:40:32,477 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-12-02 21:40:32,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 21:40:32,477 INFO L225 Difference]: With dead ends: 63 [2020-12-02 21:40:32,477 INFO L226 Difference]: Without dead ends: 0 [2020-12-02 21:40:32,478 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-02 21:40:32,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-02 21:40:32,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-02 21:40:32,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-02 21:40:32,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-02 21:40:32,480 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2020-12-02 21:40:32,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 21:40:32,480 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-02 21:40:32,480 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-02 21:40:32,481 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-02 21:40:32,481 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-02 21:40:32,692 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2020-12-02 21:40:32,696 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-02 21:40:32,761 INFO L258 CegarLoopResult]: At program point L35-3(lines 35 43) the Hoare annotation is: false [2020-12-02 21:40:32,761 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2020-12-02 21:40:32,762 INFO L262 CegarLoopResult]: For program point L11(lines 11 13) no Hoare annotation was computed. [2020-12-02 21:40:32,762 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2020-12-02 21:40:32,762 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-12-02 21:40:32,762 INFO L265 CegarLoopResult]: At program point L61(lines 23 62) the Hoare annotation is: true [2020-12-02 21:40:32,762 INFO L262 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-12-02 21:40:32,763 INFO L262 CegarLoopResult]: For program point L53(lines 53 56) no Hoare annotation was computed. [2020-12-02 21:40:32,763 INFO L262 CegarLoopResult]: For program point L53-2(lines 23 62) no Hoare annotation was computed. [2020-12-02 21:40:32,763 INFO L262 CegarLoopResult]: For program point L45(lines 45 57) no Hoare annotation was computed. [2020-12-02 21:40:32,763 INFO L262 CegarLoopResult]: For program point L12(line 12) no Hoare annotation was computed. [2020-12-02 21:40:32,763 INFO L262 CegarLoopResult]: For program point L45-2(lines 45 57) no Hoare annotation was computed. [2020-12-02 21:40:32,763 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2020-12-02 21:40:32,764 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2020-12-02 21:40:32,764 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2020-12-02 21:40:32,764 INFO L262 CegarLoopResult]: For program point L15(lines 15 18) no Hoare annotation was computed. [2020-12-02 21:40:32,764 INFO L258 CegarLoopResult]: At program point L15-2(lines 14 20) the Hoare annotation is: false [2020-12-02 21:40:32,764 INFO L262 CegarLoopResult]: For program point L15-3(lines 15 18) no Hoare annotation was computed. [2020-12-02 21:40:32,765 INFO L258 CegarLoopResult]: At program point L15-5(lines 14 20) the Hoare annotation is: false [2020-12-02 21:40:32,765 INFO L262 CegarLoopResult]: For program point L15-6(lines 15 18) no Hoare annotation was computed. [2020-12-02 21:40:32,765 INFO L258 CegarLoopResult]: At program point L15-8(line 39) the Hoare annotation is: false [2020-12-02 21:40:32,765 INFO L262 CegarLoopResult]: For program point L15-9(lines 15 18) no Hoare annotation was computed. [2020-12-02 21:40:32,765 INFO L258 CegarLoopResult]: At program point L15-11(lines 14 20) the Hoare annotation is: false [2020-12-02 21:40:32,766 INFO L262 CegarLoopResult]: For program point L15-12(lines 15 18) no Hoare annotation was computed. [2020-12-02 21:40:32,766 INFO L258 CegarLoopResult]: At program point L15-14(line 49) the Hoare annotation is: false [2020-12-02 21:40:32,766 INFO L262 CegarLoopResult]: For program point L15-15(lines 15 18) no Hoare annotation was computed. [2020-12-02 21:40:32,766 INFO L262 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-12-02 21:40:32,766 INFO L258 CegarLoopResult]: At program point L15-17(lines 14 20) the Hoare annotation is: (and (not (= ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32))) (= ULTIMATE.start_main_~d~0 ULTIMATE.start_main_~B~0) (= (_ bv1 32) ULTIMATE.start_main_~p~0)) [2020-12-02 21:40:32,767 INFO L262 CegarLoopResult]: For program point L15-18(lines 15 18) no Hoare annotation was computed. [2020-12-02 21:40:32,767 INFO L265 CegarLoopResult]: At program point L15-20(lines 14 20) the Hoare annotation is: true [2020-12-02 21:40:32,767 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2020-12-02 21:40:32,767 INFO L262 CegarLoopResult]: For program point L16(lines 16 17) no Hoare annotation was computed. [2020-12-02 21:40:32,767 INFO L262 CegarLoopResult]: For program point L16-1(lines 16 17) no Hoare annotation was computed. [2020-12-02 21:40:32,767 INFO L262 CegarLoopResult]: For program point L16-2(lines 16 17) no Hoare annotation was computed. [2020-12-02 21:40:32,768 INFO L262 CegarLoopResult]: For program point L16-3(lines 16 17) no Hoare annotation was computed. [2020-12-02 21:40:32,768 INFO L262 CegarLoopResult]: For program point L16-4(lines 16 17) no Hoare annotation was computed. [2020-12-02 21:40:32,768 INFO L262 CegarLoopResult]: For program point L16-5(lines 16 17) no Hoare annotation was computed. [2020-12-02 21:40:32,768 INFO L262 CegarLoopResult]: For program point L16-6(lines 16 17) no Hoare annotation was computed. [2020-12-02 21:40:32,768 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-12-02 21:40:32,769 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2020-12-02 21:40:32,769 INFO L262 CegarLoopResult]: For program point L35-1(lines 35 43) no Hoare annotation was computed. [2020-12-02 21:40:32,785 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 09:40:32 BoogieIcfgContainer [2020-12-02 21:40:32,785 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-02 21:40:32,786 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-02 21:40:32,786 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-02 21:40:32,786 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-02 21:40:32,787 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 09:40:26" (3/4) ... [2020-12-02 21:40:32,790 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-02 21:40:32,803 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2020-12-02 21:40:32,803 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-02 21:40:32,803 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-02 21:40:32,804 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-02 21:40:32,860 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-12-02 21:40:32,860 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-02 21:40:32,863 INFO L168 Benchmark]: Toolchain (without parser) took 6967.84 ms. Allocated memory was 39.8 MB in the beginning and 58.7 MB in the end (delta: 18.9 MB). Free memory was 22.2 MB in the beginning and 23.4 MB in the end (delta: -1.2 MB). Peak memory consumption was 18.3 MB. Max. memory is 16.1 GB. [2020-12-02 21:40:32,863 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 39.8 MB. Free memory is still 25.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-02 21:40:32,864 INFO L168 Benchmark]: CACSL2BoogieTranslator took 340.03 ms. Allocated memory was 39.8 MB in the beginning and 48.2 MB in the end (delta: 8.4 MB). Free memory was 22.0 MB in the beginning and 32.9 MB in the end (delta: -10.8 MB). Peak memory consumption was 5.3 MB. Max. memory is 16.1 GB. [2020-12-02 21:40:32,865 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.83 ms. Allocated memory is still 48.2 MB. Free memory was 32.9 MB in the beginning and 31.3 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-02 21:40:32,865 INFO L168 Benchmark]: Boogie Preprocessor took 30.52 ms. Allocated memory is still 48.2 MB. Free memory was 31.2 MB in the beginning and 29.8 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-02 21:40:32,866 INFO L168 Benchmark]: RCFGBuilder took 534.65 ms. Allocated memory is still 48.2 MB. Free memory was 29.8 MB in the beginning and 24.5 MB in the end (delta: 5.4 MB). Peak memory consumption was 11.7 MB. Max. memory is 16.1 GB. [2020-12-02 21:40:32,867 INFO L168 Benchmark]: TraceAbstraction took 5935.53 ms. Allocated memory was 48.2 MB in the beginning and 58.7 MB in the end (delta: 10.5 MB). Free memory was 23.8 MB in the beginning and 26.9 MB in the end (delta: -3.0 MB). Peak memory consumption was 5.6 MB. Max. memory is 16.1 GB. [2020-12-02 21:40:32,868 INFO L168 Benchmark]: Witness Printer took 74.88 ms. Allocated memory is still 58.7 MB. Free memory was 26.4 MB in the beginning and 23.4 MB in the end (delta: 3.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-02 21:40:32,872 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 39.8 MB. Free memory is still 25.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 340.03 ms. Allocated memory was 39.8 MB in the beginning and 48.2 MB in the end (delta: 8.4 MB). Free memory was 22.0 MB in the beginning and 32.9 MB in the end (delta: -10.8 MB). Peak memory consumption was 5.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 41.83 ms. Allocated memory is still 48.2 MB. Free memory was 32.9 MB in the beginning and 31.3 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 30.52 ms. Allocated memory is still 48.2 MB. Free memory was 31.2 MB in the beginning and 29.8 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 534.65 ms. Allocated memory is still 48.2 MB. Free memory was 29.8 MB in the beginning and 24.5 MB in the end (delta: 5.4 MB). Peak memory consumption was 11.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5935.53 ms. Allocated memory was 48.2 MB in the beginning and 58.7 MB in the end (delta: 10.5 MB). Free memory was 23.8 MB in the beginning and 26.9 MB in the end (delta: -3.0 MB). Peak memory consumption was 5.6 MB. Max. memory is 16.1 GB. * Witness Printer took 74.88 ms. Allocated memory is still 58.7 MB. Free memory was 26.4 MB in the beginning and 23.4 MB in the end (delta: 3.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 7 specifications checked. All of them hold - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 35]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 49]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 39]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 23]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: (!(cond == 0bv32) && d == B) && 1bv32 == p - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 41 locations, 7 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5.7s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 3.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 178 SDtfs, 176 SDslu, 231 SDs, 0 SdLazy, 147 SolverSat, 66 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 2.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 125 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=63occurred in iteration=5, 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, 6 MinimizatonAttempts, 68 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 9 PreInvPairs, 12 NumberOfFragments, 19 HoareAnnotationTreeSize, 9 FomulaSimplifications, 40 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 9 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 64 NumberOfCodeBlocks, 64 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 116 ConstructedInterpolants, 0 QuantifiedInterpolants, 3446 SizeOfPredicates, 17 NumberOfNonLiveVariables, 253 ConjunctsInSsa, 22 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 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 correct! Received shutdown request...