./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/bitvector/soft_float_5a.c.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_1bb28995-c43a-425a-b7fa-9f4717e00a79/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_1bb28995-c43a-425a-b7fa-9f4717e00a79/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_1bb28995-c43a-425a-b7fa-9f4717e00a79/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_1bb28995-c43a-425a-b7fa-9f4717e00a79/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/bitvector/soft_float_5a.c.cil.c -s /tmp/vcloud-vcloud-master/worker/run_dir_1bb28995-c43a-425a-b7fa-9f4717e00a79/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_1bb28995-c43a-425a-b7fa-9f4717e00a79/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6029375071a37af887817933cb6d522f173528f0 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-28 02:59:49,927 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 02:59:49,930 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 02:59:49,982 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 02:59:49,983 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 02:59:49,984 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 02:59:49,997 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 02:59:50,000 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 02:59:50,002 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 02:59:50,003 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 02:59:50,004 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 02:59:50,005 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 02:59:50,006 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 02:59:50,007 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 02:59:50,008 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 02:59:50,016 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 02:59:50,017 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 02:59:50,025 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 02:59:50,032 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 02:59:50,037 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 02:59:50,043 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 02:59:50,045 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 02:59:50,048 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 02:59:50,049 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 02:59:50,056 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 02:59:50,061 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 02:59:50,061 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 02:59:50,062 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 02:59:50,063 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 02:59:50,065 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 02:59:50,066 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 02:59:50,067 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 02:59:50,069 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 02:59:50,071 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 02:59:50,074 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 02:59:50,075 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 02:59:50,076 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 02:59:50,076 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 02:59:50,076 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 02:59:50,077 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 02:59:50,078 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 02:59:50,081 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_1bb28995-c43a-425a-b7fa-9f4717e00a79/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-28 02:59:50,105 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 02:59:50,106 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 02:59:50,107 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 02:59:50,107 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 02:59:50,108 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 02:59:50,108 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 02:59:50,108 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 02:59:50,108 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 02:59:50,109 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 02:59:50,109 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 02:59:50,109 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 02:59:50,109 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 02:59:50,110 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 02:59:50,110 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 02:59:50,110 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 02:59:50,110 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 02:59:50,111 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 02:59:50,111 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 02:59:50,111 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 02:59:50,111 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 02:59:50,112 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 02:59:50,112 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 02:59:50,112 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 02:59:50,112 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 02:59:50,113 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 02:59:50,113 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-28 02:59:50,113 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 02:59:50,113 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 02:59:50,114 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 02:59:50,114 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_1bb28995-c43a-425a-b7fa-9f4717e00a79/bin/uautomizer/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_1bb28995-c43a-425a-b7fa-9f4717e00a79/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6029375071a37af887817933cb6d522f173528f0 [2020-11-28 02:59:50,350 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 02:59:50,380 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 02:59:50,382 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 02:59:50,383 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 02:59:50,385 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 02:59:50,386 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_1bb28995-c43a-425a-b7fa-9f4717e00a79/bin/uautomizer/../../sv-benchmarks/c/bitvector/soft_float_5a.c.cil.c [2020-11-28 02:59:50,474 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_1bb28995-c43a-425a-b7fa-9f4717e00a79/bin/uautomizer/data/d6df5e702/9180ddbfa91641bf89d131ad2a160598/FLAGf7e2cc4d7 [2020-11-28 02:59:51,050 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 02:59:51,051 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_1bb28995-c43a-425a-b7fa-9f4717e00a79/sv-benchmarks/c/bitvector/soft_float_5a.c.cil.c [2020-11-28 02:59:51,059 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_1bb28995-c43a-425a-b7fa-9f4717e00a79/bin/uautomizer/data/d6df5e702/9180ddbfa91641bf89d131ad2a160598/FLAGf7e2cc4d7 [2020-11-28 02:59:51,380 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_1bb28995-c43a-425a-b7fa-9f4717e00a79/bin/uautomizer/data/d6df5e702/9180ddbfa91641bf89d131ad2a160598 [2020-11-28 02:59:51,387 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 02:59:51,389 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 02:59:51,394 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 02:59:51,395 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 02:59:51,399 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 02:59:51,401 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:59:51" (1/1) ... [2020-11-28 02:59:51,403 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@722830c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:59:51, skipping insertion in model container [2020-11-28 02:59:51,403 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:59:51" (1/1) ... [2020-11-28 02:59:51,411 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 02:59:51,454 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 02:59:51,664 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 02:59:51,672 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 02:59:51,718 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 02:59:51,733 INFO L208 MainTranslator]: Completed translation [2020-11-28 02:59:51,733 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:59:51 WrapperNode [2020-11-28 02:59:51,733 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 02:59:51,735 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 02:59:51,735 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 02:59:51,735 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 02:59:51,743 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:59:51" (1/1) ... [2020-11-28 02:59:51,752 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:59:51" (1/1) ... [2020-11-28 02:59:51,790 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 02:59:51,794 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 02:59:51,794 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 02:59:51,794 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 02:59:51,803 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:59:51" (1/1) ... [2020-11-28 02:59:51,803 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:59:51" (1/1) ... [2020-11-28 02:59:51,805 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:59:51" (1/1) ... [2020-11-28 02:59:51,806 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:59:51" (1/1) ... [2020-11-28 02:59:51,813 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:59:51" (1/1) ... [2020-11-28 02:59:51,819 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:59:51" (1/1) ... [2020-11-28 02:59:51,822 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:59:51" (1/1) ... [2020-11-28 02:59:51,826 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 02:59:51,827 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 02:59:51,827 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 02:59:51,827 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 02:59:51,828 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:59:51" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1bb28995-c43a-425a-b7fa-9f4717e00a79/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 02:59:51,913 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 02:59:51,913 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 02:59:51,914 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 02:59:51,915 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 02:59:52,598 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 02:59:52,599 INFO L298 CfgBuilder]: Removed 26 assume(true) statements. [2020-11-28 02:59:52,601 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:59:52 BoogieIcfgContainer [2020-11-28 02:59:52,601 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 02:59:52,603 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 02:59:52,604 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 02:59:52,612 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 02:59:52,613 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 02:59:51" (1/3) ... [2020-11-28 02:59:52,614 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ef760d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:59:52, skipping insertion in model container [2020-11-28 02:59:52,636 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:59:51" (2/3) ... [2020-11-28 02:59:52,636 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ef760d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:59:52, skipping insertion in model container [2020-11-28 02:59:52,637 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:59:52" (3/3) ... [2020-11-28 02:59:52,638 INFO L111 eAbstractionObserver]: Analyzing ICFG soft_float_5a.c.cil.c [2020-11-28 02:59:52,679 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 02:59:52,686 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-28 02:59:52,696 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-28 02:59:52,725 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 02:59:52,726 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 02:59:52,726 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 02:59:52,726 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 02:59:52,726 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 02:59:52,726 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 02:59:52,727 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 02:59:52,727 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 02:59:52,745 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states. [2020-11-28 02:59:52,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-11-28 02:59:52,753 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:59:52,754 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:59:52,755 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:59:52,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:59:52,762 INFO L82 PathProgramCache]: Analyzing trace with hash -1243249868, now seen corresponding path program 1 times [2020-11-28 02:59:52,772 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:59:52,772 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696570156] [2020-11-28 02:59:52,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:59:52,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:59:53,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:59:53,022 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696570156] [2020-11-28 02:59:53,023 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:59:53,024 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 02:59:53,025 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133254215] [2020-11-28 02:59:53,030 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 02:59:53,031 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:59:53,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 02:59:53,052 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 02:59:53,054 INFO L87 Difference]: Start difference. First operand 73 states. Second operand 3 states. [2020-11-28 02:59:53,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:59:53,133 INFO L93 Difference]: Finished difference Result 151 states and 252 transitions. [2020-11-28 02:59:53,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 02:59:53,138 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2020-11-28 02:59:53,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:59:53,159 INFO L225 Difference]: With dead ends: 151 [2020-11-28 02:59:53,159 INFO L226 Difference]: Without dead ends: 68 [2020-11-28 02:59:53,165 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 02:59:53,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-11-28 02:59:53,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2020-11-28 02:59:53,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-11-28 02:59:53,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 101 transitions. [2020-11-28 02:59:53,225 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 101 transitions. Word has length 25 [2020-11-28 02:59:53,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:59:53,226 INFO L481 AbstractCegarLoop]: Abstraction has 68 states and 101 transitions. [2020-11-28 02:59:53,227 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 02:59:53,227 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 101 transitions. [2020-11-28 02:59:53,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-11-28 02:59:53,229 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:59:53,230 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:59:53,230 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 02:59:53,230 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:59:53,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:59:53,233 INFO L82 PathProgramCache]: Analyzing trace with hash 464393210, now seen corresponding path program 1 times [2020-11-28 02:59:53,234 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:59:53,234 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936440300] [2020-11-28 02:59:53,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:59:53,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:59:53,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:59:53,371 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936440300] [2020-11-28 02:59:53,371 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:59:53,372 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 02:59:53,372 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7148496] [2020-11-28 02:59:53,373 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 02:59:53,374 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:59:53,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 02:59:53,375 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 02:59:53,375 INFO L87 Difference]: Start difference. First operand 68 states and 101 transitions. Second operand 4 states. [2020-11-28 02:59:53,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:59:53,420 INFO L93 Difference]: Finished difference Result 88 states and 129 transitions. [2020-11-28 02:59:53,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 02:59:53,430 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2020-11-28 02:59:53,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:59:53,431 INFO L225 Difference]: With dead ends: 88 [2020-11-28 02:59:53,431 INFO L226 Difference]: Without dead ends: 68 [2020-11-28 02:59:53,432 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-28 02:59:53,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-11-28 02:59:53,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2020-11-28 02:59:53,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-11-28 02:59:53,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 100 transitions. [2020-11-28 02:59:53,441 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 100 transitions. Word has length 27 [2020-11-28 02:59:53,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:59:53,455 INFO L481 AbstractCegarLoop]: Abstraction has 68 states and 100 transitions. [2020-11-28 02:59:53,455 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 02:59:53,455 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 100 transitions. [2020-11-28 02:59:53,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-11-28 02:59:53,456 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:59:53,457 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:59:53,457 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-28 02:59:53,457 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:59:53,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:59:53,458 INFO L82 PathProgramCache]: Analyzing trace with hash 722558648, now seen corresponding path program 1 times [2020-11-28 02:59:53,458 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:59:53,458 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365505906] [2020-11-28 02:59:53,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:59:53,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:59:53,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:59:53,561 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365505906] [2020-11-28 02:59:53,561 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:59:53,561 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 02:59:53,561 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911451253] [2020-11-28 02:59:53,562 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 02:59:53,562 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:59:53,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 02:59:53,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 02:59:53,563 INFO L87 Difference]: Start difference. First operand 68 states and 100 transitions. Second operand 3 states. [2020-11-28 02:59:53,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:59:53,715 INFO L93 Difference]: Finished difference Result 119 states and 172 transitions. [2020-11-28 02:59:53,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 02:59:53,719 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 27 [2020-11-28 02:59:53,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:59:53,721 INFO L225 Difference]: With dead ends: 119 [2020-11-28 02:59:53,721 INFO L226 Difference]: Without dead ends: 69 [2020-11-28 02:59:53,722 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 02:59:53,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-11-28 02:59:53,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 65. [2020-11-28 02:59:53,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-11-28 02:59:53,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 93 transitions. [2020-11-28 02:59:53,737 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 93 transitions. Word has length 27 [2020-11-28 02:59:53,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:59:53,738 INFO L481 AbstractCegarLoop]: Abstraction has 65 states and 93 transitions. [2020-11-28 02:59:53,738 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 02:59:53,738 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 93 transitions. [2020-11-28 02:59:53,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-11-28 02:59:53,739 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:59:53,739 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:59:53,740 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-28 02:59:53,740 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:59:53,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:59:53,740 INFO L82 PathProgramCache]: Analyzing trace with hash -1336799219, now seen corresponding path program 1 times [2020-11-28 02:59:53,741 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:59:53,741 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423908935] [2020-11-28 02:59:53,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:59:53,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:59:53,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:59:53,815 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423908935] [2020-11-28 02:59:53,815 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:59:53,815 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 02:59:53,815 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59340331] [2020-11-28 02:59:53,816 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 02:59:53,816 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:59:53,816 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 02:59:53,816 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 02:59:53,816 INFO L87 Difference]: Start difference. First operand 65 states and 93 transitions. Second operand 3 states. [2020-11-28 02:59:53,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:59:53,903 INFO L93 Difference]: Finished difference Result 129 states and 183 transitions. [2020-11-28 02:59:53,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 02:59:53,904 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 30 [2020-11-28 02:59:53,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:59:53,906 INFO L225 Difference]: With dead ends: 129 [2020-11-28 02:59:53,906 INFO L226 Difference]: Without dead ends: 75 [2020-11-28 02:59:53,907 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 02:59:53,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-11-28 02:59:53,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 72. [2020-11-28 02:59:53,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-11-28 02:59:53,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 101 transitions. [2020-11-28 02:59:53,917 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 101 transitions. Word has length 30 [2020-11-28 02:59:53,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:59:53,917 INFO L481 AbstractCegarLoop]: Abstraction has 72 states and 101 transitions. [2020-11-28 02:59:53,917 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 02:59:53,917 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 101 transitions. [2020-11-28 02:59:53,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-11-28 02:59:53,919 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:59:53,919 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:59:53,919 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-28 02:59:53,920 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:59:53,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:59:53,920 INFO L82 PathProgramCache]: Analyzing trace with hash 1305570860, now seen corresponding path program 1 times [2020-11-28 02:59:53,921 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:59:53,921 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507608068] [2020-11-28 02:59:53,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:59:53,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:59:54,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:59:54,028 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507608068] [2020-11-28 02:59:54,028 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:59:54,028 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 02:59:54,028 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316165617] [2020-11-28 02:59:54,029 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 02:59:54,029 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:59:54,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 02:59:54,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-28 02:59:54,030 INFO L87 Difference]: Start difference. First operand 72 states and 101 transitions. Second operand 4 states. [2020-11-28 02:59:54,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:59:54,194 INFO L93 Difference]: Finished difference Result 136 states and 189 transitions. [2020-11-28 02:59:54,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 02:59:54,195 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 32 [2020-11-28 02:59:54,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:59:54,196 INFO L225 Difference]: With dead ends: 136 [2020-11-28 02:59:54,196 INFO L226 Difference]: Without dead ends: 73 [2020-11-28 02:59:54,197 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-28 02:59:54,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-11-28 02:59:54,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 67. [2020-11-28 02:59:54,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-11-28 02:59:54,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 92 transitions. [2020-11-28 02:59:54,204 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 92 transitions. Word has length 32 [2020-11-28 02:59:54,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:59:54,205 INFO L481 AbstractCegarLoop]: Abstraction has 67 states and 92 transitions. [2020-11-28 02:59:54,205 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 02:59:54,205 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 92 transitions. [2020-11-28 02:59:54,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-11-28 02:59:54,206 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:59:54,206 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:59:54,207 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-28 02:59:54,207 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:59:54,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:59:54,207 INFO L82 PathProgramCache]: Analyzing trace with hash 734686790, now seen corresponding path program 1 times [2020-11-28 02:59:54,208 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:59:54,208 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650742167] [2020-11-28 02:59:54,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:59:54,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:59:54,290 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:59:54,290 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650742167] [2020-11-28 02:59:54,291 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1884185245] [2020-11-28 02:59:54,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1bb28995-c43a-425a-b7fa-9f4717e00a79/bin/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 02:59:54,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:59:54,391 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-28 02:59:54,401 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:59:54,469 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:59:54,469 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 02:59:54,470 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2020-11-28 02:59:54,470 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464545551] [2020-11-28 02:59:54,470 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 02:59:54,470 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:59:54,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 02:59:54,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-11-28 02:59:54,471 INFO L87 Difference]: Start difference. First operand 67 states and 92 transitions. Second operand 5 states. [2020-11-28 02:59:54,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:59:54,546 INFO L93 Difference]: Finished difference Result 160 states and 218 transitions. [2020-11-28 02:59:54,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 02:59:54,548 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 33 [2020-11-28 02:59:54,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:59:54,549 INFO L225 Difference]: With dead ends: 160 [2020-11-28 02:59:54,549 INFO L226 Difference]: Without dead ends: 103 [2020-11-28 02:59:54,550 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-11-28 02:59:54,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2020-11-28 02:59:54,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 72. [2020-11-28 02:59:54,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-11-28 02:59:54,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 98 transitions. [2020-11-28 02:59:54,568 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 98 transitions. Word has length 33 [2020-11-28 02:59:54,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:59:54,568 INFO L481 AbstractCegarLoop]: Abstraction has 72 states and 98 transitions. [2020-11-28 02:59:54,569 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 02:59:54,569 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 98 transitions. [2020-11-28 02:59:54,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-11-28 02:59:54,572 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:59:54,573 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:59:54,774 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2020-11-28 02:59:54,774 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:59:54,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:59:54,775 INFO L82 PathProgramCache]: Analyzing trace with hash -861199835, now seen corresponding path program 1 times [2020-11-28 02:59:54,775 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:59:54,775 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096402365] [2020-11-28 02:59:54,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:59:54,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:59:54,893 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:59:54,893 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096402365] [2020-11-28 02:59:54,893 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [141819504] [2020-11-28 02:59:54,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1bb28995-c43a-425a-b7fa-9f4717e00a79/bin/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 02:59:54,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:59:54,998 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-28 02:59:55,001 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:59:55,119 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:59:55,119 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 02:59:55,119 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2020-11-28 02:59:55,120 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320345214] [2020-11-28 02:59:55,120 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 02:59:55,120 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:59:55,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 02:59:55,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-28 02:59:55,121 INFO L87 Difference]: Start difference. First operand 72 states and 98 transitions. Second operand 6 states. [2020-11-28 02:59:55,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:59:55,230 INFO L93 Difference]: Finished difference Result 126 states and 174 transitions. [2020-11-28 02:59:55,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 02:59:55,230 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 35 [2020-11-28 02:59:55,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:59:55,231 INFO L225 Difference]: With dead ends: 126 [2020-11-28 02:59:55,232 INFO L226 Difference]: Without dead ends: 79 [2020-11-28 02:59:55,232 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-28 02:59:55,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-11-28 02:59:55,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 73. [2020-11-28 02:59:55,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-11-28 02:59:55,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 99 transitions. [2020-11-28 02:59:55,239 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 99 transitions. Word has length 35 [2020-11-28 02:59:55,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:59:55,240 INFO L481 AbstractCegarLoop]: Abstraction has 73 states and 99 transitions. [2020-11-28 02:59:55,240 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 02:59:55,240 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 99 transitions. [2020-11-28 02:59:55,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-11-28 02:59:55,241 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:59:55,242 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:59:55,469 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 02:59:55,470 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:59:55,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:59:55,470 INFO L82 PathProgramCache]: Analyzing trace with hash -2010695315, now seen corresponding path program 2 times [2020-11-28 02:59:55,470 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:59:55,470 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980609579] [2020-11-28 02:59:55,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:59:55,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:59:55,541 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:59:55,542 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980609579] [2020-11-28 02:59:55,542 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [600350770] [2020-11-28 02:59:55,542 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1bb28995-c43a-425a-b7fa-9f4717e00a79/bin/uautomizer/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 02:59:55,602 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-11-28 02:59:55,602 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-28 02:59:55,603 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-28 02:59:55,607 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:59:55,697 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-11-28 02:59:55,697 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-11-28 02:59:55,697 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5] total 9 [2020-11-28 02:59:55,698 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355749362] [2020-11-28 02:59:55,698 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 02:59:55,698 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:59:55,699 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 02:59:55,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-11-28 02:59:55,699 INFO L87 Difference]: Start difference. First operand 73 states and 99 transitions. Second operand 6 states. [2020-11-28 02:59:55,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:59:55,925 INFO L93 Difference]: Finished difference Result 172 states and 227 transitions. [2020-11-28 02:59:55,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-28 02:59:55,925 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 36 [2020-11-28 02:59:55,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:59:55,927 INFO L225 Difference]: With dead ends: 172 [2020-11-28 02:59:55,927 INFO L226 Difference]: Without dead ends: 168 [2020-11-28 02:59:55,928 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2020-11-28 02:59:55,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2020-11-28 02:59:55,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 127. [2020-11-28 02:59:55,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2020-11-28 02:59:55,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 174 transitions. [2020-11-28 02:59:55,948 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 174 transitions. Word has length 36 [2020-11-28 02:59:55,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:59:55,948 INFO L481 AbstractCegarLoop]: Abstraction has 127 states and 174 transitions. [2020-11-28 02:59:55,948 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 02:59:55,948 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 174 transitions. [2020-11-28 02:59:55,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-11-28 02:59:55,954 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:59:55,954 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:59:56,169 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 02:59:56,170 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:59:56,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:59:56,170 INFO L82 PathProgramCache]: Analyzing trace with hash 508659463, now seen corresponding path program 1 times [2020-11-28 02:59:56,170 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:59:56,170 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260851981] [2020-11-28 02:59:56,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:59:56,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:59:56,245 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:59:56,245 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260851981] [2020-11-28 02:59:56,245 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1779048957] [2020-11-28 02:59:56,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1bb28995-c43a-425a-b7fa-9f4717e00a79/bin/uautomizer/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 02:59:56,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:59:56,317 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-28 02:59:56,329 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:59:56,358 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:59:56,358 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 02:59:56,358 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2020-11-28 02:59:56,358 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771841861] [2020-11-28 02:59:56,359 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 02:59:56,359 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:59:56,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 02:59:56,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-11-28 02:59:56,360 INFO L87 Difference]: Start difference. First operand 127 states and 174 transitions. Second operand 6 states. [2020-11-28 02:59:56,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:59:56,457 INFO L93 Difference]: Finished difference Result 288 states and 395 transitions. [2020-11-28 02:59:56,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 02:59:56,458 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 38 [2020-11-28 02:59:56,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:59:56,459 INFO L225 Difference]: With dead ends: 288 [2020-11-28 02:59:56,460 INFO L226 Difference]: Without dead ends: 188 [2020-11-28 02:59:56,462 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-11-28 02:59:56,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2020-11-28 02:59:56,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 134. [2020-11-28 02:59:56,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2020-11-28 02:59:56,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 182 transitions. [2020-11-28 02:59:56,473 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 182 transitions. Word has length 38 [2020-11-28 02:59:56,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:59:56,474 INFO L481 AbstractCegarLoop]: Abstraction has 134 states and 182 transitions. [2020-11-28 02:59:56,474 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 02:59:56,474 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 182 transitions. [2020-11-28 02:59:56,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-11-28 02:59:56,475 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:59:56,475 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:59:56,701 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 02:59:56,702 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:59:56,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:59:56,702 INFO L82 PathProgramCache]: Analyzing trace with hash 1319305574, now seen corresponding path program 1 times [2020-11-28 02:59:56,702 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:59:56,703 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593089903] [2020-11-28 02:59:56,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:59:56,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:59:56,815 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:59:56,815 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593089903] [2020-11-28 02:59:56,815 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1186489280] [2020-11-28 02:59:56,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1bb28995-c43a-425a-b7fa-9f4717e00a79/bin/uautomizer/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 02:59:56,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:59:56,892 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-28 02:59:56,895 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:59:56,991 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:59:56,992 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 02:59:56,992 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2020-11-28 02:59:56,992 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24543407] [2020-11-28 02:59:56,992 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-28 02:59:56,992 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:59:56,993 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-28 02:59:56,993 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-28 02:59:56,993 INFO L87 Difference]: Start difference. First operand 134 states and 182 transitions. Second operand 7 states. [2020-11-28 02:59:57,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:59:57,247 INFO L93 Difference]: Finished difference Result 234 states and 325 transitions. [2020-11-28 02:59:57,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-28 02:59:57,248 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 40 [2020-11-28 02:59:57,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:59:57,250 INFO L225 Difference]: With dead ends: 234 [2020-11-28 02:59:57,250 INFO L226 Difference]: Without dead ends: 146 [2020-11-28 02:59:57,251 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 38 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-28 02:59:57,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-11-28 02:59:57,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 136. [2020-11-28 02:59:57,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-11-28 02:59:57,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 184 transitions. [2020-11-28 02:59:57,272 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 184 transitions. Word has length 40 [2020-11-28 02:59:57,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:59:57,274 INFO L481 AbstractCegarLoop]: Abstraction has 136 states and 184 transitions. [2020-11-28 02:59:57,275 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-28 02:59:57,275 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 184 transitions. [2020-11-28 02:59:57,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-11-28 02:59:57,275 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:59:57,276 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:59:57,493 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-11-28 02:59:57,493 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:59:57,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:59:57,494 INFO L82 PathProgramCache]: Analyzing trace with hash -976708544, now seen corresponding path program 2 times [2020-11-28 02:59:57,494 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:59:57,494 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507828197] [2020-11-28 02:59:57,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:59:57,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:59:57,553 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:59:57,553 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507828197] [2020-11-28 02:59:57,553 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1084917219] [2020-11-28 02:59:57,554 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1bb28995-c43a-425a-b7fa-9f4717e00a79/bin/uautomizer/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 02:59:57,628 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-11-28 02:59:57,628 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-28 02:59:57,629 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-28 02:59:57,631 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:59:57,675 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-11-28 02:59:57,676 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-11-28 02:59:57,676 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2020-11-28 02:59:57,676 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103265092] [2020-11-28 02:59:57,676 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 02:59:57,677 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:59:57,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 02:59:57,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-11-28 02:59:57,677 INFO L87 Difference]: Start difference. First operand 136 states and 184 transitions. Second operand 5 states. [2020-11-28 02:59:57,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:59:57,745 INFO L93 Difference]: Finished difference Result 155 states and 203 transitions. [2020-11-28 02:59:57,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 02:59:57,745 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 41 [2020-11-28 02:59:57,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:59:57,747 INFO L225 Difference]: With dead ends: 155 [2020-11-28 02:59:57,747 INFO L226 Difference]: Without dead ends: 150 [2020-11-28 02:59:57,747 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2020-11-28 02:59:57,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2020-11-28 02:59:57,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 145. [2020-11-28 02:59:57,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2020-11-28 02:59:57,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 194 transitions. [2020-11-28 02:59:57,756 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 194 transitions. Word has length 41 [2020-11-28 02:59:57,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:59:57,756 INFO L481 AbstractCegarLoop]: Abstraction has 145 states and 194 transitions. [2020-11-28 02:59:57,757 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 02:59:57,757 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 194 transitions. [2020-11-28 02:59:57,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-11-28 02:59:57,758 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:59:57,758 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:59:57,985 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 02:59:57,986 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:59:57,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:59:57,986 INFO L82 PathProgramCache]: Analyzing trace with hash -974861502, now seen corresponding path program 1 times [2020-11-28 02:59:57,986 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:59:57,986 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769136742] [2020-11-28 02:59:57,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:59:57,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:59:58,028 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-11-28 02:59:58,029 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769136742] [2020-11-28 02:59:58,029 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:59:58,029 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-28 02:59:58,029 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474102933] [2020-11-28 02:59:58,029 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 02:59:58,030 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:59:58,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 02:59:58,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 02:59:58,030 INFO L87 Difference]: Start difference. First operand 145 states and 194 transitions. Second operand 5 states. [2020-11-28 02:59:58,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:59:58,069 INFO L93 Difference]: Finished difference Result 150 states and 198 transitions. [2020-11-28 02:59:58,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 02:59:58,069 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 41 [2020-11-28 02:59:58,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:59:58,071 INFO L225 Difference]: With dead ends: 150 [2020-11-28 02:59:58,071 INFO L226 Difference]: Without dead ends: 140 [2020-11-28 02:59:58,071 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-11-28 02:59:58,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-11-28 02:59:58,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 140. [2020-11-28 02:59:58,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-11-28 02:59:58,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 185 transitions. [2020-11-28 02:59:58,081 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 185 transitions. Word has length 41 [2020-11-28 02:59:58,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:59:58,081 INFO L481 AbstractCegarLoop]: Abstraction has 140 states and 185 transitions. [2020-11-28 02:59:58,081 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 02:59:58,081 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 185 transitions. [2020-11-28 02:59:58,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-11-28 02:59:58,084 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:59:58,084 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:59:58,084 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-11-28 02:59:58,084 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:59:58,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:59:58,086 INFO L82 PathProgramCache]: Analyzing trace with hash -543462300, now seen corresponding path program 1 times [2020-11-28 02:59:58,086 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:59:58,086 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557520789] [2020-11-28 02:59:58,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:59:58,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:59:58,170 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:59:58,170 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557520789] [2020-11-28 02:59:58,170 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [658158916] [2020-11-28 02:59:58,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1bb28995-c43a-425a-b7fa-9f4717e00a79/bin/uautomizer/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 02:59:58,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:59:58,240 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-28 02:59:58,253 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:59:58,278 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:59:58,278 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 02:59:58,278 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2020-11-28 02:59:58,278 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819276058] [2020-11-28 02:59:58,279 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-28 02:59:58,279 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:59:58,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-28 02:59:58,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2020-11-28 02:59:58,283 INFO L87 Difference]: Start difference. First operand 140 states and 185 transitions. Second operand 7 states. [2020-11-28 02:59:58,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:59:58,388 INFO L93 Difference]: Finished difference Result 315 states and 414 transitions. [2020-11-28 02:59:58,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-28 02:59:58,389 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 42 [2020-11-28 02:59:58,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:59:58,391 INFO L225 Difference]: With dead ends: 315 [2020-11-28 02:59:58,391 INFO L226 Difference]: Without dead ends: 208 [2020-11-28 02:59:58,392 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2020-11-28 02:59:58,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2020-11-28 02:59:58,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 147. [2020-11-28 02:59:58,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2020-11-28 02:59:58,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 193 transitions. [2020-11-28 02:59:58,403 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 193 transitions. Word has length 42 [2020-11-28 02:59:58,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:59:58,404 INFO L481 AbstractCegarLoop]: Abstraction has 147 states and 193 transitions. [2020-11-28 02:59:58,404 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-28 02:59:58,404 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 193 transitions. [2020-11-28 02:59:58,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-11-28 02:59:58,404 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:59:58,405 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:59:58,625 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 02:59:58,626 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:59:58,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:59:58,626 INFO L82 PathProgramCache]: Analyzing trace with hash -1931714523, now seen corresponding path program 1 times [2020-11-28 02:59:58,626 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:59:58,626 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405800510] [2020-11-28 02:59:58,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:59:58,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:59:58,738 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:59:58,738 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405800510] [2020-11-28 02:59:58,738 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [911543641] [2020-11-28 02:59:58,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1bb28995-c43a-425a-b7fa-9f4717e00a79/bin/uautomizer/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 [2020-11-28 02:59:58,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:59:58,816 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 13 conjunts are in the unsatisfiable core [2020-11-28 02:59:58,819 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:59:58,916 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:59:58,916 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 02:59:58,916 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2020-11-28 02:59:58,917 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130754685] [2020-11-28 02:59:58,917 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-28 02:59:58,917 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:59:58,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-28 02:59:58,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-11-28 02:59:58,918 INFO L87 Difference]: Start difference. First operand 147 states and 193 transitions. Second operand 8 states. [2020-11-28 02:59:59,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:59:59,155 INFO L93 Difference]: Finished difference Result 251 states and 337 transitions. [2020-11-28 02:59:59,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-28 02:59:59,156 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 44 [2020-11-28 02:59:59,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:59:59,157 INFO L225 Difference]: With dead ends: 251 [2020-11-28 02:59:59,157 INFO L226 Difference]: Without dead ends: 159 [2020-11-28 02:59:59,158 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 41 SyntacticMatches, 3 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-11-28 02:59:59,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2020-11-28 02:59:59,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 149. [2020-11-28 02:59:59,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2020-11-28 02:59:59,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 195 transitions. [2020-11-28 02:59:59,166 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 195 transitions. Word has length 44 [2020-11-28 02:59:59,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:59:59,166 INFO L481 AbstractCegarLoop]: Abstraction has 149 states and 195 transitions. [2020-11-28 02:59:59,166 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-28 02:59:59,166 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 195 transitions. [2020-11-28 02:59:59,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-11-28 02:59:59,167 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:59:59,167 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:59:59,381 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2020-11-28 02:59:59,381 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:59:59,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:59:59,382 INFO L82 PathProgramCache]: Analyzing trace with hash 514014493, now seen corresponding path program 2 times [2020-11-28 02:59:59,382 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:59:59,382 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746409069] [2020-11-28 02:59:59,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:59:59,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:59:59,466 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:59:59,466 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746409069] [2020-11-28 02:59:59,466 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [33304502] [2020-11-28 02:59:59,466 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1bb28995-c43a-425a-b7fa-9f4717e00a79/bin/uautomizer/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 [2020-11-28 02:59:59,539 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-11-28 02:59:59,539 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-28 02:59:59,540 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-28 02:59:59,541 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:59:59,583 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-11-28 02:59:59,584 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-11-28 02:59:59,584 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2020-11-28 02:59:59,584 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506863415] [2020-11-28 02:59:59,584 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 02:59:59,585 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:59:59,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 02:59:59,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-11-28 02:59:59,585 INFO L87 Difference]: Start difference. First operand 149 states and 195 transitions. Second operand 6 states. [2020-11-28 02:59:59,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:59:59,734 INFO L93 Difference]: Finished difference Result 182 states and 232 transitions. [2020-11-28 02:59:59,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 02:59:59,735 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 45 [2020-11-28 02:59:59,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:59:59,736 INFO L225 Difference]: With dead ends: 182 [2020-11-28 02:59:59,736 INFO L226 Difference]: Without dead ends: 157 [2020-11-28 02:59:59,737 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2020-11-28 02:59:59,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2020-11-28 02:59:59,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 149. [2020-11-28 02:59:59,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2020-11-28 02:59:59,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 191 transitions. [2020-11-28 02:59:59,745 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 191 transitions. Word has length 45 [2020-11-28 02:59:59,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:59:59,745 INFO L481 AbstractCegarLoop]: Abstraction has 149 states and 191 transitions. [2020-11-28 02:59:59,745 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 02:59:59,749 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 191 transitions. [2020-11-28 02:59:59,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-11-28 02:59:59,749 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:59:59,749 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:59:59,969 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2020-11-28 02:59:59,970 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:59:59,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:59:59,971 INFO L82 PathProgramCache]: Analyzing trace with hash 1892120530, now seen corresponding path program 1 times [2020-11-28 02:59:59,971 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:59:59,971 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141116063] [2020-11-28 02:59:59,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:59:59,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:00:00,050 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:00:00,050 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141116063] [2020-11-28 03:00:00,050 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1233388986] [2020-11-28 03:00:00,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1bb28995-c43a-425a-b7fa-9f4717e00a79/bin/uautomizer/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:00:00,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:00:00,127 INFO L263 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-28 03:00:00,134 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:00:00,157 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:00:00,157 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 03:00:00,157 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2020-11-28 03:00:00,158 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040058656] [2020-11-28 03:00:00,158 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-28 03:00:00,158 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:00:00,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-28 03:00:00,159 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2020-11-28 03:00:00,159 INFO L87 Difference]: Start difference. First operand 149 states and 191 transitions. Second operand 8 states. [2020-11-28 03:00:00,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:00:00,292 INFO L93 Difference]: Finished difference Result 330 states and 422 transitions. [2020-11-28 03:00:00,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-28 03:00:00,293 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 49 [2020-11-28 03:00:00,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:00:00,295 INFO L225 Difference]: With dead ends: 330 [2020-11-28 03:00:00,295 INFO L226 Difference]: Without dead ends: 220 [2020-11-28 03:00:00,296 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2020-11-28 03:00:00,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2020-11-28 03:00:00,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 156. [2020-11-28 03:00:00,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2020-11-28 03:00:00,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 199 transitions. [2020-11-28 03:00:00,306 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 199 transitions. Word has length 49 [2020-11-28 03:00:00,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:00:00,306 INFO L481 AbstractCegarLoop]: Abstraction has 156 states and 199 transitions. [2020-11-28 03:00:00,306 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-28 03:00:00,306 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 199 transitions. [2020-11-28 03:00:00,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-11-28 03:00:00,307 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:00:00,307 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:00:00,529 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2020-11-28 03:00:00,530 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:00:00,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:00:00,530 INFO L82 PathProgramCache]: Analyzing trace with hash -260802349, now seen corresponding path program 1 times [2020-11-28 03:00:00,530 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:00:00,531 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960572190] [2020-11-28 03:00:00,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:00:00,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:00:00,654 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:00:00,654 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960572190] [2020-11-28 03:00:00,654 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [691880926] [2020-11-28 03:00:00,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1bb28995-c43a-425a-b7fa-9f4717e00a79/bin/uautomizer/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:00:00,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:00:00,723 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 15 conjunts are in the unsatisfiable core [2020-11-28 03:00:00,725 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:00:00,828 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:00:00,828 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 03:00:00,828 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2020-11-28 03:00:00,829 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354395888] [2020-11-28 03:00:00,829 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-28 03:00:00,829 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:00:00,830 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-28 03:00:00,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-11-28 03:00:00,830 INFO L87 Difference]: Start difference. First operand 156 states and 199 transitions. Second operand 9 states. [2020-11-28 03:00:01,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:00:01,085 INFO L93 Difference]: Finished difference Result 260 states and 339 transitions. [2020-11-28 03:00:01,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-28 03:00:01,086 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 51 [2020-11-28 03:00:01,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:00:01,088 INFO L225 Difference]: With dead ends: 260 [2020-11-28 03:00:01,088 INFO L226 Difference]: Without dead ends: 168 [2020-11-28 03:00:01,088 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 47 SyntacticMatches, 4 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-11-28 03:00:01,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2020-11-28 03:00:01,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 158. [2020-11-28 03:00:01,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2020-11-28 03:00:01,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 201 transitions. [2020-11-28 03:00:01,098 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 201 transitions. Word has length 51 [2020-11-28 03:00:01,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:00:01,098 INFO L481 AbstractCegarLoop]: Abstraction has 158 states and 201 transitions. [2020-11-28 03:00:01,098 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-28 03:00:01,098 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 201 transitions. [2020-11-28 03:00:01,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-11-28 03:00:01,099 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:00:01,099 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:00:01,313 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2020-11-28 03:00:01,313 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:00:01,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:00:01,314 INFO L82 PathProgramCache]: Analyzing trace with hash -1844505351, now seen corresponding path program 2 times [2020-11-28 03:00:01,314 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:00:01,314 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45285682] [2020-11-28 03:00:01,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:00:01,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:00:01,385 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:00:01,385 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45285682] [2020-11-28 03:00:01,385 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1161863591] [2020-11-28 03:00:01,386 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1bb28995-c43a-425a-b7fa-9f4717e00a79/bin/uautomizer/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:00:01,449 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-11-28 03:00:01,450 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-28 03:00:01,451 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 12 conjunts are in the unsatisfiable core [2020-11-28 03:00:01,452 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:00:01,532 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-11-28 03:00:01,532 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-11-28 03:00:01,532 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 13 [2020-11-28 03:00:01,532 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995994993] [2020-11-28 03:00:01,533 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-28 03:00:01,533 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:00:01,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-28 03:00:01,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2020-11-28 03:00:01,534 INFO L87 Difference]: Start difference. First operand 158 states and 201 transitions. Second operand 7 states. [2020-11-28 03:00:01,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:00:01,726 INFO L93 Difference]: Finished difference Result 256 states and 317 transitions. [2020-11-28 03:00:01,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-28 03:00:01,726 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 52 [2020-11-28 03:00:01,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:00:01,728 INFO L225 Difference]: With dead ends: 256 [2020-11-28 03:00:01,728 INFO L226 Difference]: Without dead ends: 206 [2020-11-28 03:00:01,729 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2020-11-28 03:00:01,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2020-11-28 03:00:01,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 177. [2020-11-28 03:00:01,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177 states. [2020-11-28 03:00:01,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 223 transitions. [2020-11-28 03:00:01,738 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 223 transitions. Word has length 52 [2020-11-28 03:00:01,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:00:01,738 INFO L481 AbstractCegarLoop]: Abstraction has 177 states and 223 transitions. [2020-11-28 03:00:01,739 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-28 03:00:01,739 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 223 transitions. [2020-11-28 03:00:01,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-11-28 03:00:01,739 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:00:01,740 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:00:01,953 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2020-11-28 03:00:01,954 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:00:01,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:00:01,954 INFO L82 PathProgramCache]: Analyzing trace with hash -1144040006, now seen corresponding path program 1 times [2020-11-28 03:00:01,954 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:00:01,954 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824926655] [2020-11-28 03:00:01,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:00:01,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:00:02,041 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:00:02,042 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824926655] [2020-11-28 03:00:02,042 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1138653436] [2020-11-28 03:00:02,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1bb28995-c43a-425a-b7fa-9f4717e00a79/bin/uautomizer/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:00:02,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:00:02,118 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-28 03:00:02,121 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:00:02,143 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:00:02,144 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 03:00:02,144 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2020-11-28 03:00:02,144 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367282879] [2020-11-28 03:00:02,145 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-28 03:00:02,145 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:00:02,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-28 03:00:02,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2020-11-28 03:00:02,146 INFO L87 Difference]: Start difference. First operand 177 states and 223 transitions. Second operand 9 states. [2020-11-28 03:00:02,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:00:02,262 INFO L93 Difference]: Finished difference Result 391 states and 491 transitions. [2020-11-28 03:00:02,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-28 03:00:02,263 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 54 [2020-11-28 03:00:02,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:00:02,265 INFO L225 Difference]: With dead ends: 391 [2020-11-28 03:00:02,265 INFO L226 Difference]: Without dead ends: 259 [2020-11-28 03:00:02,265 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2020-11-28 03:00:02,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2020-11-28 03:00:02,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 184. [2020-11-28 03:00:02,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 184 states. [2020-11-28 03:00:02,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 231 transitions. [2020-11-28 03:00:02,275 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 231 transitions. Word has length 54 [2020-11-28 03:00:02,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:00:02,276 INFO L481 AbstractCegarLoop]: Abstraction has 184 states and 231 transitions. [2020-11-28 03:00:02,276 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-28 03:00:02,276 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 231 transitions. [2020-11-28 03:00:02,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-11-28 03:00:02,277 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:00:02,277 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:00:02,505 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,14 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:00:02,505 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:00:02,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:00:02,506 INFO L82 PathProgramCache]: Analyzing trace with hash -988904487, now seen corresponding path program 1 times [2020-11-28 03:00:02,506 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:00:02,506 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938656984] [2020-11-28 03:00:02,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:00:02,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:00:02,538 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-11-28 03:00:02,538 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938656984] [2020-11-28 03:00:02,538 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:00:02,538 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 03:00:02,538 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294980498] [2020-11-28 03:00:02,539 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 03:00:02,539 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:00:02,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 03:00:02,539 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:00:02,539 INFO L87 Difference]: Start difference. First operand 184 states and 231 transitions. Second operand 3 states. [2020-11-28 03:00:02,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:00:02,605 INFO L93 Difference]: Finished difference Result 255 states and 316 transitions. [2020-11-28 03:00:02,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 03:00:02,607 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 56 [2020-11-28 03:00:02,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:00:02,607 INFO L225 Difference]: With dead ends: 255 [2020-11-28 03:00:02,607 INFO L226 Difference]: Without dead ends: 74 [2020-11-28 03:00:02,608 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:00:02,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-11-28 03:00:02,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2020-11-28 03:00:02,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-11-28 03:00:02,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 88 transitions. [2020-11-28 03:00:02,615 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 88 transitions. Word has length 56 [2020-11-28 03:00:02,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:00:02,615 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 88 transitions. [2020-11-28 03:00:02,615 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 03:00:02,616 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 88 transitions. [2020-11-28 03:00:02,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-11-28 03:00:02,620 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:00:02,620 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:00:02,620 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-11-28 03:00:02,620 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:00:02,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:00:02,621 INFO L82 PathProgramCache]: Analyzing trace with hash -408520283, now seen corresponding path program 1 times [2020-11-28 03:00:02,621 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:00:02,621 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932768070] [2020-11-28 03:00:02,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:00:02,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:00:02,785 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:00:02,785 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932768070] [2020-11-28 03:00:02,786 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [653570958] [2020-11-28 03:00:02,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1bb28995-c43a-425a-b7fa-9f4717e00a79/bin/uautomizer/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:00:02,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:00:02,855 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 17 conjunts are in the unsatisfiable core [2020-11-28 03:00:02,856 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:00:02,969 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:00:02,970 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 03:00:02,970 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 10 [2020-11-28 03:00:02,971 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768865901] [2020-11-28 03:00:02,973 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-28 03:00:02,973 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:00:02,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-28 03:00:02,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-11-28 03:00:02,974 INFO L87 Difference]: Start difference. First operand 74 states and 88 transitions. Second operand 10 states. [2020-11-28 03:00:03,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:00:03,195 INFO L93 Difference]: Finished difference Result 126 states and 154 transitions. [2020-11-28 03:00:03,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-28 03:00:03,196 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 58 [2020-11-28 03:00:03,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:00:03,196 INFO L225 Difference]: With dead ends: 126 [2020-11-28 03:00:03,196 INFO L226 Difference]: Without dead ends: 79 [2020-11-28 03:00:03,197 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 53 SyntacticMatches, 5 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-11-28 03:00:03,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-11-28 03:00:03,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 75. [2020-11-28 03:00:03,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-11-28 03:00:03,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 89 transitions. [2020-11-28 03:00:03,204 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 89 transitions. Word has length 58 [2020-11-28 03:00:03,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:00:03,205 INFO L481 AbstractCegarLoop]: Abstraction has 75 states and 89 transitions. [2020-11-28 03:00:03,205 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-28 03:00:03,205 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 89 transitions. [2020-11-28 03:00:03,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-11-28 03:00:03,206 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:00:03,206 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:00:03,425 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:00:03,426 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:00:03,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:00:03,426 INFO L82 PathProgramCache]: Analyzing trace with hash -807057443, now seen corresponding path program 1 times [2020-11-28 03:00:03,426 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:00:03,426 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564691071] [2020-11-28 03:00:03,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:00:03,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:00:03,520 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:00:03,521 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564691071] [2020-11-28 03:00:03,521 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [148661802] [2020-11-28 03:00:03,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1bb28995-c43a-425a-b7fa-9f4717e00a79/bin/uautomizer/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:00:03,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:00:03,590 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-28 03:00:03,592 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:00:03,613 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:00:03,614 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 03:00:03,614 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 10 [2020-11-28 03:00:03,614 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093755691] [2020-11-28 03:00:03,614 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-28 03:00:03,615 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:00:03,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-28 03:00:03,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2020-11-28 03:00:03,615 INFO L87 Difference]: Start difference. First operand 75 states and 89 transitions. Second operand 10 states. [2020-11-28 03:00:03,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:00:03,672 INFO L93 Difference]: Finished difference Result 149 states and 180 transitions. [2020-11-28 03:00:03,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-28 03:00:03,674 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 59 [2020-11-28 03:00:03,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:00:03,675 INFO L225 Difference]: With dead ends: 149 [2020-11-28 03:00:03,675 INFO L226 Difference]: Without dead ends: 103 [2020-11-28 03:00:03,675 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2020-11-28 03:00:03,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2020-11-28 03:00:03,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 77. [2020-11-28 03:00:03,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-11-28 03:00:03,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 91 transitions. [2020-11-28 03:00:03,682 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 91 transitions. Word has length 59 [2020-11-28 03:00:03,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:00:03,682 INFO L481 AbstractCegarLoop]: Abstraction has 77 states and 91 transitions. [2020-11-28 03:00:03,682 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-28 03:00:03,682 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 91 transitions. [2020-11-28 03:00:03,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-11-28 03:00:03,683 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:00:03,683 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:00:03,897 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2020-11-28 03:00:03,897 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:00:03,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:00:03,898 INFO L82 PathProgramCache]: Analyzing trace with hash -2016429986, now seen corresponding path program 2 times [2020-11-28 03:00:03,898 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:00:03,898 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723073547] [2020-11-28 03:00:03,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:00:03,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:00:04,065 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:00:04,066 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723073547] [2020-11-28 03:00:04,066 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [391274472] [2020-11-28 03:00:04,066 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1bb28995-c43a-425a-b7fa-9f4717e00a79/bin/uautomizer/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:00:04,152 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-11-28 03:00:04,152 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-28 03:00:04,153 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 12 conjunts are in the unsatisfiable core [2020-11-28 03:00:04,154 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:00:04,280 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2020-11-28 03:00:04,280 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-11-28 03:00:04,280 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10] total 15 [2020-11-28 03:00:04,281 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482871836] [2020-11-28 03:00:04,281 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-28 03:00:04,281 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:00:04,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-28 03:00:04,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2020-11-28 03:00:04,282 INFO L87 Difference]: Start difference. First operand 77 states and 91 transitions. Second operand 7 states. [2020-11-28 03:00:04,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:00:04,468 INFO L93 Difference]: Finished difference Result 80 states and 94 transitions. [2020-11-28 03:00:04,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-28 03:00:04,469 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 61 [2020-11-28 03:00:04,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:00:04,469 INFO L225 Difference]: With dead ends: 80 [2020-11-28 03:00:04,469 INFO L226 Difference]: Without dead ends: 0 [2020-11-28 03:00:04,470 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=59, Invalid=321, Unknown=0, NotChecked=0, Total=380 [2020-11-28 03:00:04,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-28 03:00:04,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-28 03:00:04,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-28 03:00:04,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-28 03:00:04,470 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 61 [2020-11-28 03:00:04,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:00:04,471 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 03:00:04,471 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-28 03:00:04,471 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-28 03:00:04,471 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-28 03:00:04,673 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:00:04,675 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-28 03:00:05,178 INFO L274 CegarLoopResult]: For program point L3(line 3) no Hoare annotation was computed. [2020-11-28 03:00:05,178 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-28 03:00:05,178 INFO L274 CegarLoopResult]: For program point L235(lines 235 244) no Hoare annotation was computed. [2020-11-28 03:00:05,179 INFO L274 CegarLoopResult]: For program point L235-2(lines 235 244) no Hoare annotation was computed. [2020-11-28 03:00:05,179 INFO L274 CegarLoopResult]: For program point L252(lines 252 256) no Hoare annotation was computed. [2020-11-28 03:00:05,179 INFO L274 CegarLoopResult]: For program point L186(lines 186 203) no Hoare annotation was computed. [2020-11-28 03:00:05,179 INFO L274 CegarLoopResult]: For program point L252-2(lines 252 256) no Hoare annotation was computed. [2020-11-28 03:00:05,179 INFO L274 CegarLoopResult]: For program point L186-2(lines 186 203) no Hoare annotation was computed. [2020-11-28 03:00:05,179 INFO L274 CegarLoopResult]: For program point L21(lines 21 26) no Hoare annotation was computed. [2020-11-28 03:00:05,179 INFO L274 CegarLoopResult]: For program point L21-1(lines 21 26) no Hoare annotation was computed. [2020-11-28 03:00:05,179 INFO L274 CegarLoopResult]: For program point L21-2(lines 21 26) no Hoare annotation was computed. [2020-11-28 03:00:05,179 INFO L274 CegarLoopResult]: For program point L21-3(lines 21 26) no Hoare annotation was computed. [2020-11-28 03:00:05,179 INFO L270 CegarLoopResult]: At program point L71(lines 20 73) the Hoare annotation is: (and (= ULTIMATE.start_base2flt_~e 0) (= ULTIMATE.start_base2flt_~__retres4~0 0) (= ULTIMATE.start_base2flt_~m 0)) [2020-11-28 03:00:05,179 INFO L270 CegarLoopResult]: At program point L71-1(lines 20 73) the Hoare annotation is: (= ULTIMATE.start_main_~zero~0 0) [2020-11-28 03:00:05,179 INFO L270 CegarLoopResult]: At program point L71-2(lines 20 73) the Hoare annotation is: (or (and (<= (mod ULTIMATE.start_main_~zero~0 4294967296) 0) (= ULTIMATE.start_base2flt_~__retres4~0 0)) (= ULTIMATE.start_main_~zero~0 0)) [2020-11-28 03:00:05,179 INFO L270 CegarLoopResult]: At program point L71-3(lines 20 73) the Hoare annotation is: (or (and (= ULTIMATE.start_main_~a~0 0) (<= (mod ULTIMATE.start_main_~zero~0 4294967296) 0)) (= ULTIMATE.start_main_~zero~0 0) (= ULTIMATE.start_base2flt_~__retres4~0 0)) [2020-11-28 03:00:05,180 INFO L274 CegarLoopResult]: For program point L187(lines 187 192) no Hoare annotation was computed. [2020-11-28 03:00:05,180 INFO L274 CegarLoopResult]: For program point L171(lines 171 176) no Hoare annotation was computed. [2020-11-28 03:00:05,180 INFO L270 CegarLoopResult]: At program point L72(lines 16 74) the Hoare annotation is: (and (= ULTIMATE.start_base2flt_~e 0) (= |ULTIMATE.start_base2flt_#res| 0) (= ULTIMATE.start_base2flt_~__retres4~0 0) (= ULTIMATE.start_base2flt_~m 0)) [2020-11-28 03:00:05,180 INFO L274 CegarLoopResult]: For program point L39(lines 39 43) no Hoare annotation was computed. [2020-11-28 03:00:05,180 INFO L270 CegarLoopResult]: At program point L72-1(lines 16 74) the Hoare annotation is: (= ULTIMATE.start_main_~zero~0 0) [2020-11-28 03:00:05,180 INFO L270 CegarLoopResult]: At program point L39-1(lines 29 44) the Hoare annotation is: false [2020-11-28 03:00:05,180 INFO L270 CegarLoopResult]: At program point L72-2(lines 16 74) the Hoare annotation is: (or (= ULTIMATE.start_main_~zero~0 0) (and (= |ULTIMATE.start_base2flt_#res| 0) (<= (mod ULTIMATE.start_main_~zero~0 4294967296) 0) (= ULTIMATE.start_base2flt_~__retres4~0 0))) [2020-11-28 03:00:05,180 INFO L274 CegarLoopResult]: For program point L39-2(lines 39 43) no Hoare annotation was computed. [2020-11-28 03:00:05,180 INFO L270 CegarLoopResult]: At program point L72-3(lines 16 74) the Hoare annotation is: (or (and (= ULTIMATE.start_main_~a~0 0) (<= (mod ULTIMATE.start_main_~zero~0 4294967296) 0)) (and (= |ULTIMATE.start_base2flt_#res| 0) (= ULTIMATE.start_base2flt_~__retres4~0 0)) (= ULTIMATE.start_main_~zero~0 0)) [2020-11-28 03:00:05,180 INFO L270 CegarLoopResult]: At program point L39-3(lines 29 44) the Hoare annotation is: (= ULTIMATE.start_main_~zero~0 0) [2020-11-28 03:00:05,180 INFO L274 CegarLoopResult]: For program point L39-4(lines 39 43) no Hoare annotation was computed. [2020-11-28 03:00:05,180 INFO L270 CegarLoopResult]: At program point L39-5(lines 29 44) the Hoare annotation is: (= ULTIMATE.start_main_~zero~0 0) [2020-11-28 03:00:05,180 INFO L274 CegarLoopResult]: For program point L39-6(lines 39 43) no Hoare annotation was computed. [2020-11-28 03:00:05,180 INFO L270 CegarLoopResult]: At program point L39-7(lines 29 44) the Hoare annotation is: (or (and (= ULTIMATE.start_main_~a~0 0) (<= (mod ULTIMATE.start_main_~zero~0 4294967296) 0)) (= ULTIMATE.start_main_~zero~0 0)) [2020-11-28 03:00:05,180 INFO L274 CegarLoopResult]: For program point L238(lines 238 242) no Hoare annotation was computed. [2020-11-28 03:00:05,181 INFO L274 CegarLoopResult]: For program point L238-2(lines 238 242) no Hoare annotation was computed. [2020-11-28 03:00:05,181 INFO L274 CegarLoopResult]: For program point L8(lines 8 10) no Hoare annotation was computed. [2020-11-28 03:00:05,181 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-28 03:00:05,181 INFO L274 CegarLoopResult]: For program point L9(line 9) no Hoare annotation was computed. [2020-11-28 03:00:05,181 INFO L270 CegarLoopResult]: At program point L208(lines 149 210) the Hoare annotation is: (or (and (= ULTIMATE.start_main_~sb~0 1) (= ULTIMATE.start_main_~tmp~2 1)) (<= (+ ULTIMATE.start_main_~sb~0 1) 0) (and (= ULTIMATE.start_mulflt_~__retres10~1 0) (<= (mod ULTIMATE.start_main_~zero~0 4294967296) 0))) [2020-11-28 03:00:05,181 INFO L274 CegarLoopResult]: For program point L27(lines 27 67) no Hoare annotation was computed. [2020-11-28 03:00:05,181 INFO L274 CegarLoopResult]: For program point L27-1(lines 27 67) no Hoare annotation was computed. [2020-11-28 03:00:05,189 INFO L274 CegarLoopResult]: For program point L27-2(lines 27 67) no Hoare annotation was computed. [2020-11-28 03:00:05,189 INFO L274 CegarLoopResult]: For program point L27-3(lines 27 67) no Hoare annotation was computed. [2020-11-28 03:00:05,189 INFO L270 CegarLoopResult]: At program point L209(lines 139 211) the Hoare annotation is: (or (and (= ULTIMATE.start_mulflt_~__retres10~1 0) (<= (mod ULTIMATE.start_main_~zero~0 4294967296) 0) (= |ULTIMATE.start_mulflt_#res| 0)) (and (= ULTIMATE.start_main_~sb~0 1) (= ULTIMATE.start_main_~tmp~2 1)) (<= (+ ULTIMATE.start_main_~sb~0 1) 0)) [2020-11-28 03:00:05,190 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-28 03:00:05,190 INFO L274 CegarLoopResult]: For program point L177(lines 177 182) no Hoare annotation was computed. [2020-11-28 03:00:05,190 INFO L274 CegarLoopResult]: For program point L195(lines 195 200) no Hoare annotation was computed. [2020-11-28 03:00:05,190 INFO L274 CegarLoopResult]: For program point L30(lines 29 44) no Hoare annotation was computed. [2020-11-28 03:00:05,190 INFO L274 CegarLoopResult]: For program point L30-1(lines 29 44) no Hoare annotation was computed. [2020-11-28 03:00:05,190 INFO L274 CegarLoopResult]: For program point L30-2(lines 29 44) no Hoare annotation was computed. [2020-11-28 03:00:05,190 INFO L274 CegarLoopResult]: For program point L30-3(lines 29 44) no Hoare annotation was computed. [2020-11-28 03:00:05,190 INFO L270 CegarLoopResult]: At program point L65(lines 27 67) the Hoare annotation is: false [2020-11-28 03:00:05,190 INFO L270 CegarLoopResult]: At program point L65-1(lines 27 67) the Hoare annotation is: (= ULTIMATE.start_main_~zero~0 0) [2020-11-28 03:00:05,190 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-11-28 03:00:05,190 INFO L270 CegarLoopResult]: At program point L65-2(lines 27 67) the Hoare annotation is: (= ULTIMATE.start_main_~zero~0 0) [2020-11-28 03:00:05,190 INFO L270 CegarLoopResult]: At program point L65-3(lines 27 67) the Hoare annotation is: (or (and (= ULTIMATE.start_main_~a~0 0) (<= (mod ULTIMATE.start_main_~zero~0 4294967296) 0)) (= ULTIMATE.start_main_~zero~0 0)) [2020-11-28 03:00:05,191 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-11-28 03:00:05,191 INFO L270 CegarLoopResult]: At program point L49-2(lines 49 64) the Hoare annotation is: false [2020-11-28 03:00:05,191 INFO L270 CegarLoopResult]: At program point L49-5(lines 49 64) the Hoare annotation is: false [2020-11-28 03:00:05,191 INFO L270 CegarLoopResult]: At program point L49-8(lines 49 64) the Hoare annotation is: (= ULTIMATE.start_main_~zero~0 0) [2020-11-28 03:00:05,191 INFO L270 CegarLoopResult]: At program point L49-11(lines 49 64) the Hoare annotation is: (or (and (= ULTIMATE.start_main_~a~0 0) (<= (mod ULTIMATE.start_main_~zero~0 4294967296) 0)) (= ULTIMATE.start_main_~zero~0 0)) [2020-11-28 03:00:05,191 INFO L274 CegarLoopResult]: For program point L248(lines 248 264) no Hoare annotation was computed. [2020-11-28 03:00:05,191 INFO L277 CegarLoopResult]: At program point L248-1(lines 248 264) the Hoare annotation is: true [2020-11-28 03:00:05,191 INFO L274 CegarLoopResult]: For program point L50(lines 49 64) no Hoare annotation was computed. [2020-11-28 03:00:05,191 INFO L274 CegarLoopResult]: For program point L50-1(lines 49 64) no Hoare annotation was computed. [2020-11-28 03:00:05,191 INFO L274 CegarLoopResult]: For program point L50-2(lines 49 64) no Hoare annotation was computed. [2020-11-28 03:00:05,191 INFO L274 CegarLoopResult]: For program point L50-3(lines 49 64) no Hoare annotation was computed. [2020-11-28 03:00:05,191 INFO L274 CegarLoopResult]: For program point L249(lines 249 258) no Hoare annotation was computed. [2020-11-28 03:00:05,191 INFO L274 CegarLoopResult]: For program point L249-2(lines 249 258) no Hoare annotation was computed. [2020-11-28 03:00:05,192 INFO L274 CegarLoopResult]: For program point L150(lines 150 156) no Hoare annotation was computed. [2020-11-28 03:00:05,192 INFO L274 CegarLoopResult]: For program point L150-2(lines 149 210) no Hoare annotation was computed. [2020-11-28 03:00:05,192 INFO L274 CegarLoopResult]: For program point L51(lines 49 64) no Hoare annotation was computed. [2020-11-28 03:00:05,192 INFO L274 CegarLoopResult]: For program point L51-1(lines 49 64) no Hoare annotation was computed. [2020-11-28 03:00:05,192 INFO L274 CegarLoopResult]: For program point L51-2(lines 49 64) no Hoare annotation was computed. [2020-11-28 03:00:05,198 INFO L274 CegarLoopResult]: For program point L51-3(lines 49 64) no Hoare annotation was computed. [2020-11-28 03:00:05,198 INFO L277 CegarLoopResult]: At program point L266(lines 212 268) the Hoare annotation is: true [2020-11-28 03:00:05,220 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 03:00:05 BoogieIcfgContainer [2020-11-28 03:00:05,220 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 03:00:05,221 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 03:00:05,221 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 03:00:05,221 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 03:00:05,222 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:59:52" (3/4) ... [2020-11-28 03:00:05,225 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-28 03:00:05,238 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2020-11-28 03:00:05,239 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2020-11-28 03:00:05,240 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 03:00:05,240 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 03:00:05,265 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((e == 0 && \result == 0) && __retres4 == 0) && m == 0 [2020-11-28 03:00:05,266 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: zero == 0 || ((\result == 0 && zero % 4294967296 <= 0) && __retres4 == 0) [2020-11-28 03:00:05,267 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((a == 0 && zero % 4294967296 <= 0) || (\result == 0 && __retres4 == 0)) || zero == 0 [2020-11-28 03:00:05,268 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((__retres10 == 0 && zero % 4294967296 <= 0) && \result == 0) || (sb == 1 && tmp == 1)) || sb + 1 <= 0 [2020-11-28 03:00:05,299 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_1bb28995-c43a-425a-b7fa-9f4717e00a79/bin/uautomizer/witness.graphml [2020-11-28 03:00:05,299 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 03:00:05,301 INFO L168 Benchmark]: Toolchain (without parser) took 13911.41 ms. Allocated memory was 90.2 MB in the beginning and 167.8 MB in the end (delta: 77.6 MB). Free memory was 60.9 MB in the beginning and 137.9 MB in the end (delta: -77.0 MB). Peak memory consumption was 1.2 MB. Max. memory is 16.1 GB. [2020-11-28 03:00:05,302 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 90.2 MB. Free memory was 49.4 MB in the beginning and 49.4 MB in the end (delta: 34.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:00:05,302 INFO L168 Benchmark]: CACSL2BoogieTranslator took 339.67 ms. Allocated memory is still 90.2 MB. Free memory was 60.6 MB in the beginning and 65.9 MB in the end (delta: -5.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-28 03:00:05,302 INFO L168 Benchmark]: Boogie Procedure Inliner took 58.40 ms. Allocated memory is still 90.2 MB. Free memory was 65.9 MB in the beginning and 63.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:00:05,303 INFO L168 Benchmark]: Boogie Preprocessor took 32.18 ms. Allocated memory is still 90.2 MB. Free memory was 63.8 MB in the beginning and 62.1 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:00:05,303 INFO L168 Benchmark]: RCFGBuilder took 774.55 ms. Allocated memory is still 90.2 MB. Free memory was 62.1 MB in the beginning and 34.4 MB in the end (delta: 27.7 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.1 GB. [2020-11-28 03:00:05,304 INFO L168 Benchmark]: TraceAbstraction took 12617.00 ms. Allocated memory was 90.2 MB in the beginning and 167.8 MB in the end (delta: 77.6 MB). Free memory was 34.0 MB in the beginning and 144.1 MB in the end (delta: -110.1 MB). Peak memory consumption was 69.2 MB. Max. memory is 16.1 GB. [2020-11-28 03:00:05,304 INFO L168 Benchmark]: Witness Printer took 78.83 ms. Allocated memory is still 167.8 MB. Free memory was 144.1 MB in the beginning and 137.9 MB in the end (delta: 6.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-11-28 03:00:05,306 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 90.2 MB. Free memory was 49.4 MB in the beginning and 49.4 MB in the end (delta: 34.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 339.67 ms. Allocated memory is still 90.2 MB. Free memory was 60.6 MB in the beginning and 65.9 MB in the end (delta: -5.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 58.40 ms. Allocated memory is still 90.2 MB. Free memory was 65.9 MB in the beginning and 63.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 32.18 ms. Allocated memory is still 90.2 MB. Free memory was 63.8 MB in the beginning and 62.1 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 774.55 ms. Allocated memory is still 90.2 MB. Free memory was 62.1 MB in the beginning and 34.4 MB in the end (delta: 27.7 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.1 GB. * TraceAbstraction took 12617.00 ms. Allocated memory was 90.2 MB in the beginning and 167.8 MB in the end (delta: 77.6 MB). Free memory was 34.0 MB in the beginning and 144.1 MB in the end (delta: -110.1 MB). Peak memory consumption was 69.2 MB. Max. memory is 16.1 GB. * Witness Printer took 78.83 ms. Allocated memory is still 167.8 MB. Free memory was 144.1 MB in the beginning and 137.9 MB in the end (delta: 6.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 3]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 49]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: (zero % 4294967296 <= 0 && __retres4 == 0) || zero == 0 - InvariantResult [Line: 16]: Loop Invariant Derived loop invariant: ((a == 0 && zero % 4294967296 <= 0) || (\result == 0 && __retres4 == 0)) || zero == 0 - InvariantResult [Line: 149]: Loop Invariant Derived loop invariant: ((sb == 1 && tmp == 1) || sb + 1 <= 0) || (__retres10 == 0 && zero % 4294967296 <= 0) - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: zero == 0 - InvariantResult [Line: 16]: Loop Invariant Derived loop invariant: zero == 0 || ((\result == 0 && zero % 4294967296 <= 0) && __retres4 == 0) - InvariantResult [Line: 29]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 49]: Loop Invariant Derived loop invariant: (a == 0 && zero % 4294967296 <= 0) || zero == 0 - InvariantResult [Line: 139]: Loop Invariant Derived loop invariant: (((__retres10 == 0 && zero % 4294967296 <= 0) && \result == 0) || (sb == 1 && tmp == 1)) || sb + 1 <= 0 - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: (e == 0 && __retres4 == 0) && m == 0 - InvariantResult [Line: 16]: Loop Invariant Derived loop invariant: zero == 0 - InvariantResult [Line: 16]: Loop Invariant Derived loop invariant: ((e == 0 && \result == 0) && __retres4 == 0) && m == 0 - InvariantResult [Line: 27]: Loop Invariant Derived loop invariant: (a == 0 && zero % 4294967296 <= 0) || zero == 0 - InvariantResult [Line: 49]: Loop Invariant Derived loop invariant: zero == 0 - InvariantResult [Line: 27]: Loop Invariant Derived loop invariant: zero == 0 - InvariantResult [Line: 212]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 27]: Loop Invariant Derived loop invariant: zero == 0 - InvariantResult [Line: 29]: Loop Invariant Derived loop invariant: (a == 0 && zero % 4294967296 <= 0) || zero == 0 - InvariantResult [Line: 27]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 49]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 248]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 29]: Loop Invariant Derived loop invariant: zero == 0 - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: ((a == 0 && zero % 4294967296 <= 0) || zero == 0) || __retres4 == 0 - InvariantResult [Line: 29]: Loop Invariant Derived loop invariant: zero == 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 73 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 11.9s, OverallIterations: 23, TraceHistogramMax: 7, AutomataDifference: 3.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.5s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2053 SDtfs, 1005 SDslu, 4873 SDs, 0 SdLazy, 1760 SolverSat, 157 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 885 GetRequests, 726 SyntacticMatches, 16 SemanticMatches, 143 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 1.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=184occurred in iteration=19, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 23 MinimizatonAttempts, 447 StatesRemovedByMinimization, 18 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 24 LocationsWithAnnotation, 24 PreInvPairs, 68 NumberOfFragments, 201 HoareAnnotationTreeSize, 24 FomulaSimplifications, 17454 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 24 FomulaSimplificationsInter, 124 FormulaSimplificationTreeSizeReductionInter, 0.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 2.7s InterpolantComputationTime, 1714 NumberOfCodeBlocks, 1654 NumberOfCodeBlocksAsserted, 39 NumberOfCheckSat, 1675 ConstructedInterpolants, 0 QuantifiedInterpolants, 169320 SizeOfPredicates, 46 NumberOfNonLiveVariables, 2685 ConjunctsInSsa, 154 ConjunctsInUnsatCore, 39 InterpolantComputations, 12 PerfectInterpolantSequences, 211/866 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...